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Copyright © 2017 ASM International® 
ASM Handbook, Volume 18, Friction, Lubrication, and Wear Technology All rights reserved 
George E. Totten, editor www.asminternational.org 


ASM Handbook® 


Volume 18 
Friction, Lubrication, and Wear Technology 


Prepared under the direction of the 
ASM International Handbook Committee 


Volume Editor 
George E. Totten, Portland State University 


Division Editors 
Andrew W. Batchelor, Monash University 
Hong Liang, Texas A&M University 
Christina Y.H. Lim, National University of Singapore 
Seh Chun Lim, Singapore University of Technology and Design 
Bojan Podgornik, Institute of Metals and Technology 
Thomas W. Scharf, University of North Texas 
Emile van der Heide, University of Twente 


ASM International Staff 
Amy Nolan, Content Developer 
Steve Lampman, Senior Content Developer 
Victoria Burt, Content Developer 
Susan Sellers, Content Development and Business Coordinator 
Madrid Tramble, Manager, Production 
Patty Conti, Production Coordinator 
Diane Whitelaw, Production Coordinator 
Karen Marken, Senior Managing Editor 
Scott D. Henry, Senior Content Engineer 


Editorial Assistance 
Warren Haws 
Ed Kubel 
Heather Lampman 
Lilla Ryan 
Jo Hannah Leyda 
Elizabeth Marquard 
Bonnie Sanders 


€ 


ASM 


INTERNATIONAL 


ASM International? 
Materials Park, Ohio 44073-0002 
www.asminternational.org 


Copyright © 2017 
by 
ASM International® 
All rights reserved 


No part of this book may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, 
photocopying, recording, or otherwise, without the written permission of the copyright owner. 


First printing, December 2017 


This Volume is a collective effort involving hundreds of technical specialists. It brings together a wealth of information from worldwide 
sources to help scientists, engineers, and technicians solve current and long-range problems. 

Great care is taken in the compilation and production of this Volume, but it should be made clear that NO WARRANTIES, EXPRESS OR 
IMPLIED, INCLUDING, WITHOUT LIMITATION, WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR 
PURPOSE, ARE GIVEN IN CONNECTION WITH THIS PUBLICATION. Although this information is believed to be accurate by ASM, 
ASM cannot guarantee that favorable results will be obtained from the use of this publication alone. This publication is intended for use by per- 
sons having technical skill, at their sole discretion and risk. Since the conditions of product or material use are outside of ASM’s control, ASM 
assumes no liability or obligation in connection with any use of this information. No claim of any kind, whether as to products or information in 
this publication, and whether or not based on negligence, shall be greater in amount than the purchase price of this product or publication in 
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BUYER, AND IN NO EVENT SHALL EITHER PARTY BE LIABLE FOR SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES 
WHETHER OR NOT CAUSED BY OR RESULTING FROM THE NEGLIGENCE OF SUCH PARTY. As with any material, evaluation of 
the material under end-use conditions prior to specification is essential. Therefore, specific testing under actual conditions is recommended. 


Nothing contained in this Volume shall be construed as a grant of any right of manufacture, sale, use, or reproduction, in connection with any 
method, process, apparatus, product, composition, or system, whether or not covered by letters patent, copyright, or trademark, and nothing 
contained in this Volume shall be construed as a defense against any alleged infringement of letters patent, copyright, or trademark, or as a 
defense against liability for such infringement. 


Comments, criticisms, and suggestions are invited, and should be forwarded to ASM International. 
Library of Congress Cataloging-in-Publication Data 
ASM International 


ASM Handbook 
Includes bibliographical references and indexes 
Contents: v.1. Properties and selection—irons, steels, and high-performance alloys—v.2. Properties and selection—nonferrous alloys and 
special-purpose materials—[etc.]—v.23. Materials for medical devices 


1. Metals—Handbooks, manuals, etc. 2. Metal-work—Handbooks, manuals, etc. I. ASM International. Handbook Committee. II. 
Metals Handbook. 
TA459.M43 1990 620.1°6 90-115 
SAN: 204-7586 


ISBN-13: 978-1-62708-141-2 
ISBN-10: 1-62708-141-0 


EISBN: 978-1-62708-142-9 


ASM International® 
Materials Park, OH 44073-0002 
www.asminternational.org 


Printed in the United States of America 


Copyright © 2017 ASM International® 
ASM Handbook, Volume 18, Friction, Lubrication, and Wear Technology All rights reserved 
George E. Totten, editor www.asminternational.org 


Foreword 


2016-2017 has been a time period in which ASM International has implemented its strategic plan for 
“The ASM Renewal.” Key tenants of the renewal have been a focus on technical excellence, membership, 
and strategic collaborations. Pursuit of these has been guided by a fundamental belief that ASM provides 
maximum value to its members and society when working at the intersection of engineering/design, mate- 
rials, and manufacturing. Further, ASM International is a society of members who have come together to 
do great things that cannot be done individually. 


The origins of ASM can be traced to 1913 and the formation of the Steel Treaters Club in Detroit. 
Since that time, ASM has grown and now embraces a wide diversity of materials and processing technol- 
ogies. However, the purpose of ASM, as stated in Section 4 of the ASM Constitution, is “ASM is formed 
for the exclusive purpose of advancing and disseminating scientific, engineering, and technical knowl- 
edge, particularly with respect to the manufacture, processing, characterization, selection, understanding, 
use, and life-cycle of engineered materials, through education, research, and the compilation and dissem- 
ination of information to serve technical and professional needs and interests and to benefit the general 
public.” 


The publication of ASM Handbook, Volume 18, Friction, Lubrication, and Wear Technology is the 
embodiment of the core values and beliefs that our Society holds dear. Volume Editor George Totten, 
seven Division Editors, and over 200 authors and reviewers worked to revise ASM Handbook, Volume 
18, Friction, Lubrication, and Wear Technology from its original 1992 edition. Volume 18 is a resource 
for engineers and technical personnel who are looking to find practical solutions to real-world tribological 
problems. 


In quoting Peter Blau, Volume Editor of the first edition, the content is to help in “‘selecting the right 
tool for the right job.” Coverage includes the fundamental physical principles and materials properties 
that are the basis of understanding and solving tribological problems. 


Additionally, as in every ASM Handbook volume, Volume 18 provides readers with reference informa- 
tion in the form of charts, graphs, tables, and key equations to help solve specific problems. In addition to 
basic concepts, methods of lab testing and analysis, materials selection, and field diagnosis and monitor- 
ing of friction and wear also are covered in Volume 18. The key focus of the Volume is improved mate- 
rials performance through informed materials selection, lubrication use, and employment of surface 
treatments and coatings. 


Volume 18 embodies the most comprehensive, up-to-date, and competitive tribological reference infor- 
mation available in the world today. With this valuable reference publication newly revised, ASM Inter- 
national is the best option for materials scientists, engineers, and technicians focused on solving the most 
pressing tribological issues. It is also emblematic of The ASM Renewal. 


William E. Frazier “Pilgrim” 
President 
ASM International 


William T. Mahoney 
Chief Executive Officer 
ASM International 


iii 


ASM Handbook, Volume 18, Friction, Lubrication, and Wear Technology 
George E. Totten, editor 


Copyright © 2017 ASM International® 
All rights reserved 
www.asminternational.org 


Preface to the First Edition 


Friction, lubrication, and wear (FL&W) technology impacts many 
aspects of daily life, from the wear of one’s teeth to the design of intri- 
cate, high-speed bearings for the space shuttle. Nearly everyone encoun- 
ters an FL&W problem from time to time. Sometimes the solution to the 
problem is simple and obvious—disassembling, cleaning, and relubricat- 
ing a door hinge, for example. Sometimes, however, the problem itself is 
difficult to define, the contact conditions in the system difficult to charac- 
terize, and the solution elusive. 


Approaches to problem-solving in the multidisciplinary field of tribol- 
ogy (that is, the science and technology of FL&W) often present a wide 
range of options and can include such diverse fields as mechanical 
design, lubrication, contact mechanics, fluid dynamics, surface chemistry, 
solid-state physics, and materials science and engineering. Practical expe- 
rience is a very important resource for solving many types of FL&W pro- 
blems, often replacing the application of rigorous tribology theory or 
engineering equations. Selecting “the right tool for the right job” was 
an inherent principle in planning the contents of this Volume. 


It is unrealistic to expect that specific answers to all conceivable 
FL&W problems will be found herein. Rather, this Handbook has been 
designed as a resource for basic concepts, methods of laboratory testing 
and analysis, materials selection, and field diagnosis of tribology pro- 
blems. As Volume Chairman, I asked the Handbook contributors to keep 
in mind the question: “What information would I like to have on my desk 
to help me with friction, lubrication, or wear problems?” More than 100 
specialized experts have risen to this challenge, and a wealth of useful 
information resides in this book. 


The sections on solid friction, lubricants and lubrication, and wear and 
surface damage contain basic, tutorial information that helps introduce 
the materials-oriented professional to established concepts in tribology. 
The Handbook is also intended for use by individuals with a background 
in mechanics or lubricant chemistry and little knowledge of materials. 
For example, some readers may not be familiar with the measurement 
and units of viscosity or the regimes of lubrication, and others may not 
know the difference between brass and bronze. The “Glossary of Terms” 
helps to clarify the use of terminology and jargon in this multidisciplin- 
ary area. The discerning reader will find the language of FL&W technol- 
ogy to be somewhat imprecise; consequently, careful attention to context 
is advised when reading the different articles in the Volume. 


The articles devoted to various laboratory techniques for conducting 
FL&W analyses offer a choice of tools to the reader for measuring wear 


iv 


accurately, using these measurements to compute wear rates, understand- 
ing and interpreting the results of surface imaging techniques, and 
designing experiments such that the important test variables have been 
isolated and controlled. Because many tribosystems contain a host of 
thermal, mechanical, materials, and chemical influences, structured 
approaches to analyzing complex tribosystems have also been provided. 


The articles devoted to specific friction- or wear-critical components 
are intended to exemplify design and materials selection strategies. A 
number of typical tribological components or classes of components are 
described, but it was obviously impossible to include all the types of 
moving mechanical assemblies that may experience FL&W problems. 
Enough diversity is provided, however, to give the reader a solid basis 
for attacking other types of problems. The earlier sections dealing with 
the basic principles of FL&W science and technology should also be use- 
ful in this regard. 


Later sections of the Handbook address specific types of materials and 
how they react in friction and wear situations. Irons, alloy steels, Bab- 
bitts, and copper alloys (brasses and bronzes) probably account for the 
major tonnage of tribological materials in use today, but there are techno- 
logically important situations where these workhorse materials may not 
be appropriate. Readers with tribomaterials problems may find the sec- 
tions on other materials choices, such as carbon-graphites, ceramics, 
polymers, and intermetallic compounds, helpful in providing alternate 
materials-based solutions. In addition, the section on surface treatments 
and modifications should be valuable for attacking specialized friction 
and wear problems. Again, the point is to find the right material for the 
right job. 


This Volume marks the first time that ASM International has compiled 
a handbook of FL&W technology. The tribology research and develop- 
ment community is quite small compared with other disciplines, and 
the experts who agreed to author articles for this Volume are extremely 
busy people. I am delighted that such an outstanding group of authors ral- 
lied to the cause, one that ASM and the entire tribology community can 
take pride in. I wish to thank all the contributors heartily for their much- 
appreciated dedication to this complex and important project in applied 
materials technology. 


Peter J. Blau 

Volume Chairman 

Metals and Ceramics Division 
Oak Ridge National Laboratory 


ASM Handbook, Volume 18, Friction, Lubrication, and Wear Technology 
George E. Totten, editor 


Copyright © 2017 ASM International® 
All rights reserved 
www.asminternational.org 


Preface to the Second Edition 


Tribology is an interdisciplinary study of material properties, including 
design, friction, wear, and lubrication of interacting surfaces in relative 
motion. Friction is the resistance of materials to relative motion, and wear 
is the loss of material due to that motion. Lubrication refers to the use of a 
fluid or solid to minimize friction and wear. From this definition, it is evident 
that tribological properties are fundamental to the wide-ranging materials, 
processes, and technologies of interest to ASM International. This recogni- 
tion led to the development of the first edition of ASM Handbook, Volume 
18, Friction, Lubrication, and Wear Technology. 


The first edition of Volume 18, which was published in 1992, 
addressed the tribological properties of materials, including solid friction, 
lubricants and lubrication, wear, laboratory characterization techniques, 
systematic diagnosis of friction and wear tests, friction and wear of com- 
ponents, materials for friction and wear applications, and surface treat- 
ments and coatings for friction and wear control. Although this 
comprehensive treatment has been an invaluable resource for 25 years, 
there have been numerous material and technology developments that 
were not reflected in the topical coverage of the first edition. In view of 
the time that has elapsed since the publication of the first edition and 
the necessity for updating the coverage, a decision was made to develop 
the second edition. 


The second edition of ASM Handbook, Volume 18, Friction, Lubrication, 
and Wear Technology has undergone a significant expansion and revision of 
coverage by a new group of global experts. There has been some reorgani- 
zation of the topical coverage to better accommodate new material for inclu- 
sion. The comprehensive, revised, and peer-reviewed coverage of the 
second edition was targeted for a broad audience, including researchers, 
engineers, technicians, students, and quality-control personnel. 


This new comprehensive reference would not have been possible with- 
out the vital contributions of our dedicated and conscientious editors, 
article contributors, and staff. My most sincere thanks and appreciation 
to all. 


Dr. George E. Totten, FASM 
Volume Editor 
Portland State University 


ASM Handbook, Volume 18, Friction, Lubrication, and Wear Technology 
George E. Totten, editor 


Copyright © 2017 ASM International® 
All rights reserved 
www.asminternational.org 


Policy on Units of Measure 


By a resolution of its Board of Trustees, ASM International has 
adopted the practice of publishing data in both metric and customary 
U.S. units of measure. In preparing this Handbook, the editors have 
attempted to present data in metric units based primarily on Système 
International d’Unités (SI), with secondary mention of the corresponding 
values in customary U.S. units. The decision to use SI as the primary sys- 
tem of units was based on the aforementioned resolution of the Board of 
Trustees and the widespread use of metric units throughout the world. 

For the most part, numerical engineering data in the text and in tables 
are presented in SI-based units with the customary U.S. equivalents in 
parentheses (text) or adjoining columns (tables). For example, pressure, 
stress, and strength are shown both in SI units, which are pascals (Pa) 
with a suitable prefix, and in customary U.S. units, which are pounds 
per square inch (psi). To save space, large values of psi have been con- 
verted to kips per square inch (ksi), where 1 ksi = 1000 psi. The metric 
tonne (kg x 10°) has sometimes been shown in megagrams (Mg). Some 
strictly scientific data are presented in SI units only. 

To clarify some illustrations, only one set of units is presented on art- 
work. References in the accompanying text to data in the illustrations are 
presented in both SI-based and customary U.S. units. On graphs and 
charts, grids corresponding to SI-based units usually appear along the left 
and bottom edges. Where appropriate, corresponding customary U.S. 
units appear along the top and right edges. 

Data pertaining to a specification published by a specification-writing 
group may be given in only the units used in that specification or in dual 
units, depending on the nature of the data. For example, the typical yield 
strength of steel sheet made to a specification written in customary U.S. units 


vi 


would be presented in dual units, but the sheet thickness specified in that 
specification might be presented only in inches. 

Data obtained according to standardized test methods for which the 
standard recommends a particular system of units are presented in the 
units of that system. Wherever feasible, equivalent units are also pre- 
sented. Some statistical data may also be presented in only the original 
units used in the analysis. 

Conversions and rounding have been done in accordance with IEEE/ 
ASTM SI-10, with attention given to the number of significant digits in 
the original data. For example, an annealing temperature of 1570 °F contains 
three significant digits. In this case, the equivalent temperature would be 
given as 855 °C; the exact conversion to 854.44 °C would not be appropri- 
ate. For an invariant physical phenomenon that occurs at a precise tempera- 
ture (such as the melting of pure silver), it would be appropriate to report the 
temperature as 961.93 °C or 1763.5 °F. In some instances (especially in 
tables and data compilations), temperature values in °C and °F are alterna- 
tives rather than conversions. 

The policy of units of measure in this Handbook contains several 
exceptions to strict conformance to IEEE/ASTM SI-10; in each instance, 
the exception has been made in an effort to improve the clarity of the 
Handbook. The most notable exception is the use of g/cm? rather than 
kg/m? as the unit of measure for density (mass per unit volume). 

SI practice requires that only one virgule (diagonal) appear in units 
formed by combination of several basic units. Therefore, all of the units 
preceding the virgule are in the numerator and all units following the vir- 
gule are in the denominator of the expression; no parentheses are required 
to prevent ambiguity. 


ASM Handbook, Volume 18, Friction, Lubrication, and Wear Technology 


George E. Totten, editor 


Copyright © 2017 ASM International® 
All rights reserved 
www.asminternational.org 


List of Contributors and Reviewers 


Phillip B. Abel 
NASA Glenn Research Center 


Rehan Ahmed 
Heriot-Watt University 


Oyelayo O. Ajayi 
Argonne National Laboratory 


Metin Akkök 
Middle East Technical University 


K. Anand 
GE Power 


H. Arabnejad 
University of Tulsa 


Masoud Atapour 
Isfahan University of Technology 


Ewa A. Bardasz 
ZUAL Associates in Lubrication LLC 


Andrew W. Batchelor 
Monash University 


V.M. Bedekar 
The Timken Company 


Michel Belin 
Ecole Centrale de Lyon 


Diana Berman 
University of North Texas 


Maria-Dolores Bermudez 
Universidad Politécnica de Cartagena 


Patrice Berthod 
Institut Jean Lamour 


Thierry Blanchet 
Rensselaer Polytechnic Institute 


P.J. Blau 
Blau Tribology Consulting 


Kirsten Bobzin 
RWTH Aachen University 


Carlos Borras 
Universidad Industrial de Santander 


Amparo Borrell 
Universidad Politécnica de Valencia 


Rob Bosman 
University of Twente 


Meherwan P. Boyce 
The Boyce Consultancy Group LLC 


Witold Brostow 
University of North Texas 


K.G. Budinski 
Bud Labs 


Michael Burkinshaw 
Cummins Turbo Technologies 


Sergio Tonini Button 
Universidade Estadual de Campinas 


Jerry Byers 
Cimcool Fluid Technology (Retired) 


Lorella Ceschini 
University of Bologna 


Margam Chandrasekaran 
Wise Consultants and Services Pte. Ltd. 


Lei Chen 
Southwest Jiaotong University 


Peter R.N. Childs 
Imperial College London 


Desmond Chong 
Singapore Institute of Technology 


Jian Huei Choo 
Singapore Institute of Technology 


Md. Asaduzzaman Chowdhury 
Dhaka University of Engineering & 
Technology 


Huseyin Cimenoglu 
Istanbul Technical University 


K.D. Clarke 
Colorado School of Mines 


Rachel Colbert 
Sandia National Laboratories 


Francesca Maria Cura 
Politecnico di Torino 


Patti Cusatis 
BASF 


Horst Czichos 
BHT Berlin, University of Applied 
Sciences 


Narendra B. Dahotre 
University of North Texas 


Wei Dai 
Texas A&M University 


vii 


Greg Dalton 
TribSys Inc. 


Patrick De Baets 
Ghent University 


Heidi de Villiers-Lovelock 
The Welding Institute 


Senad Dizdar 
Höganäs AB 


Kuniaki Dohda 
Northwestern University 


Gary Doll 
The University of Akron 


Michael T. Dugger 
Sandia National Laboratories 


Matevz Dular 
University of Ljubljana 


Pierre DuPont 
UMONS, Faculté Polytechnique de Mons 


Noam Eliaz 
Tel-Aviv University 


Robert Errichello 
Geartech 


Izhak Etsion 
Technion - Israel Institute of Technology 


Ryan D. Evans 
The Timken Company 


Dieter Fauconnier 
Ghent University 


Carlos M.C.G. Fernandes 
INEGI, Universidade do Porto 


H.R. Fischer 
TNO Technical Sciences 


Gareth Fish 
The Lubrizol Corporation 


G. Fisher 
InnoTech Alberta 


Marc Fivel 
Université Grenoble Alpes 


M. Hosseini Fouladi 
Taylor’s University 


Jean-Pierre Franc 
Université Grenoble Alpes 


ASM Handbook, Volume 18, Friction, Lubrication, and Wear Technology 


George E. Totten, editor 


Klaus Friedrich 
Technische Universitat Kaiserslautern 


Allen J. Fuller, Jr. 
Amsted Rail Company, Inc. 


Tatsuya Funazuka 
Toyama University 


Anders Gaard 
Karlstad University 


Isaac Garbar 
Ben-Gurion University of the Negev 


Ignacio Garcia 
El Centro Nacional de Investigaciones 
Metalurgicas 


Arash Ghabchi 
The Boeing Co. 


M. Ghassem 
Universiti Kebangsaan 


David Goncalves 
Instituto de Ciência e Inovação em 
Engenharia Mecanica e Engenharia Industrial 


Thomas Gradt 
Federal Institute for Materials Research and 
Testing (BAM) 


A. Ya. Grigoriev 
National Academy of Science of Belarus 


Janez Grum 
University of Ljubljana 


Paul Giimpel 
Hochschule Konstanz University of Applied 
Sciences 


Nikhil Gupta 
New York University 


C.H. Hager, Jr. 
The Timken Company 


Haley E. Hagg Lobland 
University of North Texas 


W.M. Hannon 
The Timken Company 


Liang Hao 
Xidian University 


Jens Hardell 
Lulea University of Technology 


Jason C. Harper 
Sandia National Laboratories 


Jeffrey Hawk 
National Energy Technology 
Laboratory (DOE) 


Hooshang Heshmat 
Mohawk Innovative Technology, Inc. 


Harish Hirani 
IIT Delhi 
Central Mechanical Engineering 
Research Institute 


Ken Hope 
Chevron Phillips Chemical Company LP 


Lothar Hörl 
Stuttgart University 


Bo Hu 
North American Höganäs, Inc. 


Kalevi Huhtala 
Tampere University of Technology 


Ian Hutchings 
University of Cambridge 


Peter Idowu 
The Pennsylvania State University 


Mark J. Jackson 
Bonded Abrasive Group 


Martin Jech 
AC2T Research GmbH 


Jack Jeswiet 
Queen’s University 


Liang Jiang 
Southwest Jiaotong University 


Zhengyi Jiang 
University of Wollongong 
Xin Jin 
Technische Universitat Braunschweig 


P.M. Johns-Rahnejat 
Loughborough University 


David W. Johnson 
University of Dayton 


Sameehan S. Joshi 
University of North Texas 


Mitjan Kalin 
University of Ljubljana 


Guldem Kartal Sireli 
Istanbul Technical University 


Koji Kato 
Nihon University 


Toshiharu Kazama 
Muroran Institute of Technology 


Francis E. Kennedy, Jr. 
Dartmouth College 


Harman Khare 
University of Pennsylvania 


Neelima Khare 
Bhabha Atomic Research Centre 


Hyunok Kim 
EWI Forming Center 


Tim Königstein 
RWTH Aachen University 


Alekcander V. Kovalev 
Belarus National Academy of Sciences 


Suresh C. Kuiry 
Bruker Corporation 


Vili 


Copyright © 2017 ASM International® 
All rights reserved 
www.asminternational.org 


Steven Lampman 
ASM International 


Thomas Larsen 
The Trelleborg Group 


Alain Le Bot 
Ecole Centrale de Lyon 


Claudia Lenauer 
AC2T Research GmbH 


Dongyang Li 
University of Alberta 


Hong Liang 
Texas A&M University 


Christina Y.H. Lim 
National University of Singapore 


Seh Chun Lim 
Singapore University of Technology 
and Design 


Jianguo Lin 
Imperial College London 


Mari Lindgren 
Outotec Research Center 


Shuhai Liu 
China University of Petroleum 


Cinta Lorenzo-Martin 
Argonne National Laboratory 


James Lowrie 
North Carolina State University 


Piet M. Lugt 
University of Twente 


Numpon Mahayotsanun 
Khon Kaen University 


Joydeep Maity 
National Institute of Technology Durgapur 


Lasse Makkonen 
VTT Technical Research Centre of Finland 


Darina Manova 
Leibniz Institute of Surface Modification 


Allan Matthews 
The University of Manchester 


Efstathios Meletis 
The University of Texas at Arlington 


Thomas Merkle 
Schmalenberger GmbH & Co. 


Donna Meyer 
The University of Rhode Island 


Dubravko Miljkovic 
Hrvatska Elektroprivreda 


Kazuhisa Miyoshi 
NASA (Retired) 


Jon-Erik Mogonye 
Army Research Laboratory 


ASM Handbook, Volume 18, Friction, Lubrication, and Wear Technology 


George E. Totten, editor 


M. Mohammadpour 
Loughborough University 


Sankar K. Mohan 
Magna Powertrain USA, Inc. 


Goutam Mohapatra 
John Deere India Private Ltd. 


Nikolai K. Myshkin 
Belarus National Academy of Sciences 


Shuhei Nagata 
Hitachi Ltd. 


Yoshitaka Nakanishi 
Kumamoto University 


S. Narayana Namasivayam 
Taylor’s University 


Gracious Ngaile 
North Carolina State University 


George K. Nikas 
KADMOS Engineering Ltd. 


M.J. Mohd Nor 
Universiti Teknikal Malaysia Melaka 


Mikael Olsson 
Dalarna University 


Mehmet Ote 
RWTH Aachen University 


Marcello Papini 
Ryerson University 


Howard W. Penrose 
MotorDoc LLC 


Jose M. Perez 
University of North Texas 


Bojan Podgornik 
Institute of Metals and Technology 


Braham Prakash 
Lulea University of Technology 


Tomasz Pronobis 
Berlin Institute of Technology 


Pandora Psyllaki 
Technological Educational Institute of Piraeus 


Linmao Qian 
Southwest Jiaotong University 


Bart Raeymaekers 
The University of Utah 


R. Rahmani 
Loughborough University 


H. Rahnejat 
Loughborough University 


Bernard Rolfe 
Deakin University 


E. Rolinski 
Advanced Heat Treat Corp. 


A. Röttger 
Ruhr-Universitat Bochum 


Manish Roy 
Defence Metallurgical Research 
Laboratory 


Natasha Sacks 
University of the Witwatersrand 


Pradip Saha 
The Boeing Company 


Satyam S. Sahay 
John Deere India Private Ltd. 


M. Abdul Samad 
King Fahd University of Petroleum & 
Minerals 


T.W. Scharf 
The University of North Texas 


Dirk Jan Schipper 
University of Twente 


Steven R. Schmid 
University of Notre Dame 


Tony L. Schmitz 
University of North Carolina at Charlotte 


Craig J. Schroeder 
Element Materials Technology 


J. Senatorski 
Institute of Precision Mechanics 


P.H. Shipway 
University of Nottingham 


Zakwan Skaf 
Cranfield University 


J.B.A.F. Smeulders 
Quaker Chemical Corp. 


Don Smolenski 
Evonik Oil Additives 


Igor Smurov 
Ecole Nationale d’Ingenieurs de 
Saint Etienne 


Soheil Solhjoo 
University of Groningen 


Gwidon Stachowiak 
Curtin University 


Karsten Stahl 
Technical University of Munich 


Malcolm Stanford 
NASA 


Tobias Steiner 
Robert Bosch GmbH 


Jacob Sukumaran 
Ghent University 


Ebru Emine Demirci Sukuroglu 
Giimiishane Universitesi 


ix 


Copyright © 2017 ASM International® 
All rights reserved 
www.asminternational.org 


M. Suliga 
Częstochowa University of 
Technology 


Hernán Svoboda 
University of Buenos Aires 


Jan Szczepaniak 
Industrial Institute of Agricultural 
Engineering 


J. Tacikowski 
Institute of Precision Mechanics 


W. Theisen 
Ruhr-Universitat Bochum 


Yu Tian 
Tsinghua University 


Viktor Tittel 
Slovak University of Technology 


Stefania Toschi 
University of Bologna 


Simon C. Tung 
Tung Innovation Technology 
Consulting Inc. 


Eckart Uhlmann 
Berlin Institute of Technology 


Emile van der Heide 
University of Twente 


W. Merlijn van Spengen 
Delft University of Technology 
Falco Systems BV 


C.J. Van Tyne 
Colorado School of Mines 


Paula Vettel 
Novvi, LLC 


Xiaohui Wang 
Chinese Academy of Sciences 


Frank Wardle 
UPM Ltd. 


Dongbin Wei 
University of Technology Sydney 


Wolfgang Wietheger 
RWTH Aachen University 


T. Wolfe 
InnoTech Alberta 


Victor W. Wong 
Massachusetts Institute of Technology 


Robert J.K. Wood 
University of Southampton 


Mathias Woydt 
BAM, Federal Institute for Materials 
Research and Testing 


L. Francis Xavier 
Karpagam University 


Copyright © 2017 ASM International® 


ASM Handbook, Volume 18, Friction, Lubrication, and Wear Technology All rights reserved 
George E. Totten, editor www.asminternational.org 
Wenzhen Xia Xiangqiong Zeng Lidong Zhao 
University of Wollongong Chinese Academy of Sciences RWTH Aachen University 
Huaping Xiao Zhiwei Zhang Craig Zimmerman 
China University of Petroleum Romax Technology Bluewater Thermal Solutions 
William G. Yelton Hongmei Zhao Fatima Živić 
Sandia National Laboratories The Lubrizol Corporation University of Kragujevac 


ASM Handbook, Volume 18, Friction, Lubrication, and Wear Technology 


George E. Totten, editor 


Copyright © 2017 ASM International® 
All rights reserved 
www.asminternational.org 


Officers and Trustees of ASM International (2016-2017) 


William E. Frazier 
President 
Naval Air Systems Command 
Frederick E. Schmidt 
Vice President 
Advanced Applied Services 
Jon D. Tirpak 
Immediate Past President 
ATI 
William T. Mahoney 
Managing Director 
ASM International 
Craig D. Clauser 
Treasurer 
CCECI 


Ellen Cerreta 

Los Alamos National Laboratory 
Kathryn Dannemann 

Southwest Research Institute 
Ryan M. Deacon 

United Technologies Research Center 
Larry D. Hanke 

Materials Evaluation and Engineering 
Roger A. Jones 

Solar Atmospheres Inc. 
Sudipta Seal 

University of Central Florida 
T.S. Sudarshan 

Materials Modification Inc. 


David B. Williams 
The Ohio State University 
John D. Wolodko 
University of Alberta 


Student Board Members 
Swetha Barkam 

University of Central Florida 
Allison E. Fraser 

Lehigh University 
Rachel Stewart 

Colorado School of Mines 


Members of the ASM Handbook Committee (2016-2017) 


Alan P. Druschitz, Chair 
Virginia Tech 
Craig J. Schroeder, Vice Chair 
Element 
George Vander Voort, Immediate Past Chair 
Vander Voort Consulting LLC 
Craig D. Clauser, Board Liaison 
Craig Clauser Engineering Consulting 
John D. Wolodko, Board Liaison 
University of Alberta 
Sabit Ali 
National Bronze and Metals Inc. 
Kevin R. Anderson 
Mercury Marine 
Scot Beckwith 
Sampe 
Narendra B. Dahotre 
University of North Texas 


Volker Heuer 

ALD Vacuum Technologies GmbH 
Martin Jones 

Ford Motor Company 
Dana Medlin 

SEAL Laboratories 
Brett A. Miller 

IMR Metallurgical Services 
Erik M. Mueller 

National Transportation Safety Board 
Scot M. Olig 

U.S. Naval Research Lab 
Valery Rudnev 

Inductoheat Incorporated 
Satyam Suraj Sahay 

John Deere Technology Center India 
Jeffery S. Smith 

Material Processing Technology LLC 


Chairs of the ASM Handbook Committee 


J.F. Harper 

(1923-1926) (Member 1923-1926) 
W.J. Merten 

(1927-1930) (Member 1923-1933) 
L.B. Case 

(1931-1933) (Member 1927-1933) 
C.H. Herty, Jr. 

(1934-1936) (Member 1930-1936) 
J.P. Gill 

(1937) (Member 1934-1937) 
R.L. Dowdell 

(1938-1939) (Member 1935-1939) 
G.V. Luerssen 

(1943-1947) (Member 1942-1947) 
J.B. Johnson 

(1948-1951) (Member 1944-1951) 
E.O. Dixon 

(1952-1954) (Member 1947-1955) 
N.E. Promisel 

(1955-1961) (Member 1954-1963) 
R.W.E. Leiter 

(1962-1963) (Member 1955-1958, 1960-1964) 


D.J. Wright 
(1964-1965) (Member 1959-1967) 


J.D. Graham 

(1966-1968) (Member 1961-1970) 
W.A. Stadtler 

(1969-1972) (Member 1962-1972) 
G.J. Shubat 

(1973-1975) (Member 1966-1975) 
R. Ward 
(1976-1978) (Member 1972-1978) 
G.N. Maniar 

(1979-1980) (Member 1974-1980) 
M.G.H. Wells 

(1981) (Member 1976-1981) 

J.L. McCall 

(1982) (Member 1977-1982) 

L.J. Korb 

(1983) (Member 1978-1983) 

T.D. Cooper 

(1984-1986) (Member 1981-1986) 
D.D. Huffman 

(1986-1990) (Member 1982-1991) 


D.L. Olson 
990-1992) (Member 1982-1992) 
R.J. Austin 
(1992-1994) (Member 1984-1985) 


~ 


xi 


Jaimie S. Tiley 

U.S. Air Force Research Lab 
George E. Totten 

G.E. Totten & Associates LLC 
Dustin A. Turnquist 

Spectrum Forensics LLC 
Junsheng Wang 

Kaiser Aluminum - Trentwood 
Charles V. White 

Kettering University 
Dehua Yang 

Ebatco 
Joseph Newkirk, Ex-Officio Member 

Missouri University of Science 

and Technology 


W.L. Mankins 

(1994-1997) (Member 1989-1998) 
M.M. Gauthier 

(1997-1998) (Member 1990-2000) 
C.V. Darragh 

(1999-2002) (Member 1989-2002) 
Henry E. Fairman 

(2002-2004) (Member 1993—2006) 
Jeffrey A. Hawk 

(2004-2006) (Member 1997—2008) 
Larry D. Hanke 

(2006-2008) (Member 1994-2012) 
Kent L. Johnson 

(2008-2010 (Member 1999-2014) 
Craig D. Clauser 

(2010-2012) (Member 2005-2016) 
Joseph W. Newkirk 

(2012-2014) (Member 2005-) 
George Vander Voort 

(2014-2016) (Member 1997-) 


ASM Handbook, Volume 18, Friction, Lubrication, and Wear Technology 


George E. Totten, editor 


Contents 


Introduction 


Introduction to Tribology and Trobological Parameters 

Horst Czichos, BHT Berlin, University of Applied Sciences 

Mathias Woydt, BAM, Federal Institute for Materials 
Research and Testing 
Structural Parameters .... 0.2... 0. ce eee eee 
Operational Parameters 
Contact Parameters 
Friction Parameters 
Wear: Parameters: yiia maitea e sae heed Rik EEP Mia a 
Material Parameters and Selection .................0.0. 
Appendix: Principles of General System Theory 

Tribological Testing and Presentation of Data 

Horst Czichos, BHT Berlin, University of Applied Sciences 

Mathias Woydt, BAM, Federal Institute for Materials 
Research and Testing 
Machinery or Component-Level Tests 
Laboratory and Specimen Testing..................... 
Laboratory Friction and Wear Tests 
Investigation of Worn Surfaces ................00000. 
Presentation of Friction and Wear Data 
Transition Diagrams 
Tribomaps 
Wear Data and Reliability 


Solid Friction 


Basic Theory of Solid Friction 
Emile van der Heide and Dirk Jan Schipper, University of 
Twente (The Netherlands) 
Friction in History ... 2.0.0... 0... cece eee eee 
Friction as a System Characteristic 
Surface Topography 
Composition 
Subsurface Microstructure 


Rolling Friction 
Laboratory Testing Methods for Solid Friction 

K.G. Budinski, Bud Labs... 0.0 ee 
Historical Development of Friction Testing 
Techniques 
Friction Models... sutas ee eee eee ee eee ee ine 
Friction Testing Techniques 
Friction Nomenclature... . 2.0... 0... 00... 
Standard Friction Tests... 0.0... 0.0.0.0. 0000000000008 
Performing a Valid Test 
Test Parameters 


Reporting System Losses 
Friction Databases .. 1... 0... 0... ee eee 
Measurement of Surface Forces and Adhesion 
Revised by W. Merlijn van Spengen, Delft University of 
Technology and Falco Systems BV and H.R. Fischer, TVO 
Technical Sciences, The Netherlands... ....0.0.00 00000 e ue 
Basic Concepts 


44 


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Contact between Rough Surfaces 
Measuring Surface Forces 
Atomic Force Microscopy 
Surface Force Apparatus 
Microscale Adhesion and Adhesion-Measurement 
Methods Using MEMS Technologies 
Measuring Adhesion 
State of the Art 
Frictional Heating in Dry and Lubricated Contacts 
Jacob Sukumaran, Patrick De Baets, and Dieter Fauconnier, 
Ghent University 
Frictional Heating in Dry Contacts.................0.. 
Frictional Heating Measurements (Dry Contact) 
Numerical Techniques (Dry Contact Heating) 
Viscous Heating in Full-Film Lubrication............... 
Viscous Heating Temperature Measurements 
Numerical Analysis of Viscous Heating 
Conclusions and Challenges 
Environmental and Application Factors in Solid Friction 
Friction in Soft Tribology 
Friction in Metal Forming 
Friction at High Temperatures 


Lubricants and Lubrication 


Fundamentals of Lubrication 
Suresh C. Kuiry, Bruker Corporation .... 0.0.00 0 00004 
Surface Characteristics and Lubrication 
Lubrication Regimes 
Boundary Lubrication 
Hydrodynamic Lubrication 
Elastohydrodynamic Lubrication 
Mixed Lubrication... 1... 0.0.0.0... cee ee eee 
Hydrostatic Lubrication 
Lubricant Materials... 1... 0... 0. cee ee eee 
Properties of Lubricants 
Tribological Evaluation of Lubricants 
Properties of Liquid Lubricants 
Wei Dai and Hong Liang, Texas A&M University 
Components of Lubricating Oils 
Chemical Structures of Additives..................... 
Physical Properties of Liquid Lubricants 
Viscosity 
Other Properties 
Performance Characteristics of Lubricants 
Lubricant Classification... 2.2... 0.0... 0.000.000 
Health, Safety, and Environment 
Methods of Lubricant Application .................... 
Lubricant Additives and Their Functions 
Revised by Ewa A. Bardasz, ZUAL Associates in 
Lubrication LLC 
Lubricant Types and Additives 
Dispersants 
Detergents 
Antiwear and Extreme-Pressure Agents 
Friction Modifiers/Antisquawk Agents 
Oxidation Inhibitors 


ASM Handbook, Volume 18, Friction, Lubrication, and Wear Technology 


George E. Totten, editor 


Rust and Corrosion Inhibitors... .......... 0.000000 ee 
Emulsifiers and Demulsifiers 
Pour-Point Depressants 
Foam Inhibitors S poeder eea ioe SOE ee ee 
Viscosity Improvers 
Other Additives 


Engine Lubricants Overview and Development Trends 
Simon C. Tung, Tung Innovation Technology Consulting Inc. 
Victor W. Wong, Massachusetts Institute of Technology 
Effects of Engine Lubricants and Additives 
Lubricant-Base Oil Composition. ... o... ssas asana anaa 
Lubricant Additives .... 0... 0.00. eee eee eee 
Improving Emerging Powertrain Systems 
Formulation Development and Performance Tests 
New Automotive Engine Oil Formulations 
Heavy-Duty Engine-Oil Specification Development 
Global OEM Specification Development 
Lubricants for Rolling-Element Bearings 
Revised by Piet M. Lugt, SKF Research & Technology 
Development and University of Twente 
Liquid Lubricants 
Fluid Lubrication for Rolling Bearings 
Mineral Oils 
Viscosity of Lubricants 
Types and Properties of Nonpetroleum Oils 
Grease Lubrication 
Polymeric Lubricants 
Solid Lubricants 
Ionic Liquids as Lubricants or Lubricant Additives 
Huaping Xiao and Shuhai Liu, China University of Petroleum.... 
Structure and Properties..... 2.2.0.0... 0.00.0. 000000005 
Applications 
Challenges 
Summary and Outlook 
Nomenclature 
Grease 
Rob Bosman, University of Twente 
Grease Formulation. ......... a E EE eee eee eee 
Lubricating Mechanism 
Grease Degradation....... 0.0.0... na i ei eee 
Grease Characterization 
Grease-Life Testing 
Grease in Practice 
Solid Lubricants 
Michael T. Dugger, Sandia National Laboratories .......... 
Historical Overview 
Characteristics and Fundamental Aspects................ 
Material Categories 
Surface Preparation 
Deposition Methods 
Qualification Metrics 
Polyalphaolefin Lubricant Applications 
Ken Hope, Chevron Phillips Chemical Company LP......... 
Passenger Car Motor Oils 
Heavy-Duty Engine Oils 
Transmission Fluids 
Gear Oils 
GASES iiss a as dag ate Pa aaa ON ee Ho A gow ao eS 
Compressor Oils 
Hydraulic Fluids 
Food-Grade Lubricants 
Lubrication Strategies for Extreme Environments 
Gary Doll, The University of Akron 
Gas Lubrication 


Copyright © 2017 ASM International® 
All rights reserved 
www.asminternational.org 


Introduction and Basic Theory of Wear 
S.C. Lim, Singapore University of Technology and Design 
Andrew W. Batchelor, Monash University 
C.Y.H. Lim, National University of Singapore 

Wear Measurement 
Revised by Linmao Qian, Lei Chen, and Liang Jiang, Southwest 

Jiaotong University 
Wear Measurement at the Macro/Microscale 
Wear Measurement at the Nanoscale 


Wear Maps 
S.C. Lim, Singapore University of Technology and Design .... 
Presentation of Wear Data................ 0000000005 
Development of Wear Maps 
Essential Components of Wear Maps 
Constructing a Wear Map 
How to Use a Wear Map 
Concluding Summary 


Wear by Particles or Fluids 
Abrasive Wear 
Dongyang Li, University of Alberta 
Mechanism sie ea orc cee Mies ee eed dees trae sac es adored a 
Testing and Analysis 
Metallic Materials... 2... 0... ee eee eee eee 
Ceramic Materials, weine munia a aoina eee eee 
Polymeric Materials 
Factors that Influence Abrasive Wear 
Polishing Wear 
Koji Kato, Nihon University 
Patterns of Microcontacts in Polishing 
Abrasive Wear Modes. ........... 2... eee eee eee 
Smoothing by Plastic Flow at Grooves and Dents 
Smoothing by Tribochemical Reactions and Wear 
Polishing Wear Control—Applications and Prospects 
Summary and Conclusion 
Solid Particle Erosion 
Revised by Robert J.K. Wood, University of 
Southampton 
Erosion 


Erosion of PMCs, MMCs, and CMCs 
Erosion of Coatings 
Erosion-Corrosion 
Modeling 
Cavitation Erosion 
Marc Fivel and Jean-Pierre Franc, Université Grenoble Alpes 
Mechanism of Cavitation Erosion 
Laboratory Testing Methods 
Pitting and Incubation Period 
Mass Loss and Advanced Periods of Erosion 
Materials Selection and Surface Protection to 
Prevent Cavitation Erosion..............02-02 000 ee 
Material Response to Cavitation Impact Loads 
Fluid-Structure Interaction 
Toward a Finite-Element-Method Numerical Prediction of 
Cavitation Erosion Damage 
Concluding Remarks 
Liquid Impingement Erosion 
Revised and updated by Robert J.K. Wood, 
University of Southampton 
Occurrences in Practice 


xiv 


ASM Handbook, Volume 18, Friction, Lubrication, and Wear Technology 


George E. Totten, editor 


Mechanisms of Liquid Impact Erosion 
Time Dependence of Erosion Rate 
Factors Affecting Erosion Severity 
Test Methods for Erosion Studies 
Means for Combatting Erosion 
Concluding Remarks 


Wear by Rolling, Sliding, or Impact 
Sliding and Adhesive Wear 
Revised by P.J. Blau, Blau Tribology Consulting 
Material-Removal Processes during Sliding 
Contact 
The Nature of Sliding Surfaces 
Material-Dependent Bonding and Third-Body Layers in 
Sliding Wear 
Wear Equations, Design Criteria, and Materials 
DELECHON a arina aa att a bee E le aay ORE ibs wes eat 
Sliding Wear of Metals, Ceramics, and Polymers 
Hybrid Sliding Systems 
Design to Avoid Adhesive Wear 
Fretting Wear 
Revised by P.H. Shipway, University of Nottingham 
Fretting Wear In Mechanical Components 
Mechanisms of Fretting Wear 
Fretting Loops, Maps, and Regimes 
Role of Fretting Conditions 
Role of Environmental Conditions 
Role of Material Properties 
Modeling of Fretting 
Prevention of Fretting Damage 
Rolling-Contact Wear 
Physical Signs of Rolling-Contact Wear 
Rolling-Contact Fatigue Testing 
Mechanisms of Rolling-Contact Wear 
Impact Wear 
Experimental Background 
Model for Compound Impact 
Linear Impact Wear 
Impact Wear of Machine Contacts 
Solution Methods for Measurable Wear................. 
Plotting a Wear Curve.... 2... 0... eee cee eee 


Chemically Assisted and Environmentally Controlled Wear 
Tribocorrosion 
Revised by Andrew W. Batchelor, Monash Universtiy and 
Steven Lampman, ASM International 
Oxidative Wear 
Corrosive Wear 
Measurement of Corrosive-Wear Damage 
Corrosive Wear with Abrasion. ................00 000 e 
Two-Body Corrosive Abrasive Wear................000. 
Corrosive Wear Factors during Grinding 
Slurry Particle Impingement Tests 
Grinding Tribocorrosion Tests 
Tribocorrosion with Impact Wear 
Mitigating Corrosive Wear 
Adhesion, Friction, and Wear in Low-Pressure and 
Vacuum Environments 
Kazuhisa Miyoshi, NASA (Retired) 
Phillip B. Abel, NASA Glenn Research Center 
Adhesion Behavior in Low-Pressure and 
Vacuum Environments............. 0020s e eee eee 
Adhesion and Friction of Clean Surfaces and Surfaces 
Contaminated by Environment 
Effects of Low-Oxygen Pressures and 
Vacuum Environments on Adhesion and Friction 


XV 


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Effects of Defined Exposure to Oxygen on Friction 
Wear and Transfer of Materials in Vacuum Environments. . . . 
Alloying Element Effects on Friction, Wear, and Transfer. . . . 
Ceramic Fracture, Wear, and Transfer 
Concluding Remarks 
Biotribology of Medical Implants 
Andrew W. Batchelor, Monash University 
Margam Chandrasekaran, Wise Consultants and 
Services Pie's Fd. 560-3 65 hee Beastie ate nd Ys ene Seda et a 
Relevance of Constituents to the Tribological/Wear 
Behavior of Implants 
Response to Wear Debris from Implant Materials and 
Acceleration of Wear by Adverse Operating Conditions .. . 
Tribological Pairs in the Human Body 
Corrosion and Erosion due to the Internal Environment 
Testing Methods 


Tribology and Wear of Irons and Steels.................. 


Wear of Cast Irons 
General Wear Characteristics 
Abrasion-Resistant Cast Irons... .......0. 0.00000 ee eee 
Brake Drum and Disk Wear............0. 000000 eens 
Piston Rings and Cylinder Liners 
Grinding Balls 

Wear Resistance of Steels 


Wear Testing and Evaluation 
Abrasive Wear 


Wear in Specific Applications 
Wear Resistance of Austenitic Manganese Steels 
Surface Heat Treatments 
Phosphate Coatings 
Wear-Resistant Coatings and Ion Implantation 
Hardness Evaluation 


Wear of Stainless Steels 
Mari Lindgren, Outotec Research Center 
Classification of Stainless Steels 
Classification of Wear... . 0.0. ee eee 
Alloy Selection for Various Wear Conditions 
Abrasion 


Surface Fatigue 
Tribology and Wear of Bearing Steels 
Revised by C.H. Hager, Jr., W.M. Hannon, and V.M. Bedekar, 
The Timken Company 
Composition of Bearing Steels 
Concentrated Contacts 


Tribology and Wear of Tool Steels 
Metallurgical Aspects of Tool Steel Wear 
Lubrication of Tool Steels 
Surface Treatments 
Properties of High-Speed Tool Steels 
Tool Steel for Dies and Molds 


372 


ASM Handbook, Volume 18, Friction, Lubrication, and Wear Technology 


George E. Totten, editor 


Abrasive Wear and Grindability of Powder Metallurgy 
Steels 


Tribology and Wear of Nonferrous Alloys and 
Nonmetallic Materials .....................0000000- 
Friction and Wear of Sliding Bearing Materials.............. 
Properties of Bearing Materials 
Bearing Material Systems 
Bearing AWOys's oo eee cence ee Soe ie pal Sele aren grea ane 
Casting Processes 
Powder Metallurgy Processes.......... 0.0... 0000 0000. 
Roll Bonding Processes... 2.0.0... 0. eee eee ee eee 
Electroplating Processes 
Bearing Materials Selection..................0.0000. 
Friction and Wear of Cobalt-Base Alloys 
Rehan Ahmed, Heriot-Watt University 
Heidi de Villiers-Lovelock, The Welding Institute........... 
Introduction s se oF dl aie aby eo ee wb ees Dag hoe ed Diese goa eerie 
Tribological Behavior of Cobalt-Base Alloys............. 
Friction and Wear of Titanium Alloys..................... 
Surface Modification Treatments 
Physical Vapor Deposition...................0000004 
Thermochemical Conversion Surface Treatments 
Solid Lubrication 
Friction and Wear of Aluminum Alloys and Composites 
Lorella Ceschini and Stefania Toschi 
University of Bologna 
Designation of Aluminum Alloys...................0. 
Effects of Main Alloying Elements.................... 
Microstructure of Cast and Wrought Aluminum Alloys...... 
Strengthening Mechanisms of Aluminum Alloys 
Aluminum-Base Composites 
Tribology of Aluminum Alloys 
Tribology of Metal-Matrix Composites 
Friction and Wear of Cemented Carbides 
Revised by Xiaohui Wang, Chinese Academy of Sciences ..... 
Raw Materials. 2 osecs 65/824 parean deer ANE AEN Ra 
Manufacturing Methods.....................0200000- 
Properties 
Wear Properties of Cemented Carbides................. 
Friction and Wear of Ceramics 
Mitjan Kalin, University of Ljubljana 
Types of Structural Ceramics....................000- 
Properties of Structural Ceramics 
Friction and Wear of Ceramics...................000- 
Superlow Friction of SiN; and SIC 
Wear-Protective Hydrated Tribochemical Layers 
The Electrochemical Mechanism of pH and the Electric 
Charge at the Surfaces in Water 
Tribological Applications of Structural Ceramics 
and Composites... see 0... . eee eee eee 
Friction and Wear of Carbon-Containing Composites 
Diana Berman, Witold Brostow, Haley E. Hagg Lobland, and 
Jose M. Perez, University of North Texas 
Neelima Khare, Bhabha Atomic Research Centre, India 
Importance of Friction and Wear and the Role of 
Lubricants in Composites.... 0.0.0.0... 0.00000 00008 
Allotropes of Carbon...... 0.0... 0... cee eee ee ee eee 
Composites with Carbon Black 
Composites with Graphite 
Carbon Nanotubes and Their Composites 
Composites with Graphene 
Diamond-Containing Composites 
Effects of Irradiation on Friction and Wear 
Concluding Remarks... 1... 0.0.0.0... 000. eee 


533 
533 


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Friction and Wear of Polymers and Polymer Composites 
Nikolai K. Myshkin and Alekcander V. Kovalev, Metal-Polymer 

Research Institute of Belarus National Academy of Sciences .. . 
Polymers in Tribological Applications.................. 
Fundamentals of Polymer Friction and Wear............. 
Wear Modes of Polymers 
Polymer Composites... 2.0.0.0... ee eee eee eee eee 
Polymers for Gears... 2... eee ee eee 
Tribotesting of Polymers and Polymer 

Composites: cites id has ORL A Ra Moe ees Fi 


Surface Treatments and Coatings for Friction and 
Wear Control sae giaa edn bets aoe og eyes ee eee see 
Carbon-Base (Diamondlike and Diamond) Coatings 
Ryan D. Evans, The Timken Company... 1.1.0... 00000000. 
Deposition Methods for Diamondlike Carbon Coatings... .. . 
Deposition Methods for Diamond..................... 
Substrate Preparation... . 2... 0.0.0.0... ee eee 
Deposition Process Quality Control 
Coating Composition and Structure.................00. 
Mechanical Properties. .... 0.0.0.0... 0.000.000 ee eae 
Tribological Properties 
Applications of Carbon-Base Coatings 
Transition Metal Dichalcogenide-Based (MoS2, WS.) Coatings 
T.W. Scharf, The University of North Texas............... 
Unbonded MoS, and WS, Coatings 
Bonded MoS, and WS, Coatings 
Vapor-Deposited Pure and Composite MoS» and 
WS5- Coatings’... 4 ete 8 eink: Sate eee Noe ah oan 
Other Forms of TMD Lubrication..................... 
Carbide- and Boride-Based Thick Coatings for Abrasive 
Wear-Protection Applications 
W. Theisen and A. Röttger, Ruhr-Universitat Bochum........ 
Wear-Resistant Materials... 2... ...... 0.0.0.0. 000008 


Metallic Matrices and Hard Alloys.................04. 
Metal-Matrix Composites 
Cemented Carbides.... 0... 0.0.00... cee eee eee 


Processing of Thick Wear-Resistant Coatings 
Coatings and Surface Treatments for Friction and Wear Control 
Revised by Kirsten Bobzin, Mehmet Ote, Tim Konigstein, 
Lidong Zhao, and Wolfgang Wietheger 
RWTH Aachen University—Surface Engineering Institute IOT.... 
Basics of Tribology....... 0.0... eee eee eee eee 
Basics of Thermal Spray...............00 00000 eee 
Coating Manufacture... 2.2.0.0... .. 0.2 eee eee eee ee 
Coating Analysis 
Thermal Spray Processes... n... 0... 0.0000. c eee eee 
Coating Materials wi ease iy en tE eect eee aA a, E E oe 
Applications ossee gat na e EEr kek ae ee ESES 
Electroplated Coatings for Friction, Lubrication, and 
Wear Technology 
William G. Yelton and Jason C. Harper, 
Sandia National Laboratories... 1... 0000. cee eee 
Electroplating Fundamentals 
The Plating System... 1.0... 0.0... eee eee ee eee 
Plating Methods 
General Coating Types 
Materials Available for Electroplating.................. 
Common Issues with Electroplating 
Carburizing 
Allen J. Fuller, Jr., Amsted Rail Company, Inc............- 
Suitable Grades of Steel 


Copyright © 2017 ASM International® 


ASM Handbook, Volume 18, Friction, Lubrication, and Wear Technology All rights reserved 
George E. Totten, editor www.asminternational.org 
Types: Of Wear aron 3 secs E a er ees ee ee 635 Modeling Approaches........... 0... eee eee eee eee 717 
Characteristics of Carburized Steels that Affect Wear Effects and Degree of Benefits....................0-. 718 
RESIStaN CE» aseo RG BAR seek So Reto e Na ae ares 635 
Processing Considerations ...................0-00000- 636 Tool and Die Wear..........ccccc ccc cece cece eee eens 723 
Carburization of Titantum............. 0.20.00 eee eee 637 
Tribology of Nitrided and Nitrocarburized Steels Fundamentals of Tribology in Metal Forming 
J. Senatorski and J. Tacikowski, Institute of Precision Mechanics Steven R. Schmid, University of Notre Dame 
E. Rolirtski, Advanced Heat Treat Corp. Jack Jeswiet, Queen’ s University... 0... ce eee 725 
Steven Lampman, ASM International .. 0.1.0.0... 0c eee 638 Dry Forming sises ors aks eye cca een aed eek bn ees 725 
Surface Layer Microstructures ............0. 0000 eee 639 Lubricated Forming sperati sokie cc cece eee 726 
Process Metbodsu tasare i ders Ti ime A eee eee eee 641 Surface Flattening and Roughening.................... 727 
Surface Layer Optimization. ......... 0.0.00. .0 ee eee 644 Lubrication Theory... o... ourer raaua eee eee 728 
Wear Behavior of Nitrided Layers ................004- 645 Advanced Tribology Models ..........0.0000 00 eee euee 729 
Wear Resistance of Selected Steels................004. 647 Heat Transfer Model.........-2 ccc aa LaLa a 730 
Rolling-Contact Fatigue. à... soosis ierre 647 e A Ge E N N AG Bl 
Staimless:Steel.... 00. sae ee te E ace eee ee aon 649 COnCHISTONS Secession kh 733 
Wear and Galling Resistance of Borided (Boronized) Metal Surfaces Fundamentals of Tribology in Machining 
Craig Zimmerman, Bluewater Thermal Solutions ........... 653 Tony L. Schmitz, University of North Carolina at Charlotte. ... 735 
Basics of Boronizing...... 2.6.0.6... ee ee eee eee eee 653 Machining Parameter Relationships ................... 735 
Boride Surface Characteristics ............0. 0000 eee 653 TOolMcifes ed ce cd ete de Nye De eed Te 740 
Wear Resistance and Coefficient of Friction of Cutting Fluids eo n aa ees 743 
Boride Layers... 2.60... eee ee eee ee eee 656 Process Dynamics and Vibrations..................005 744 
Galling Resistance of Borided Surfaces................. 658 Lubrication and Wear in Rolling 
Boronizing Plus PVD Overlay Coating................. 659 Dongbin Wei, University of Technology Sydney 
Laser Surface Engineering for Tribology Wenzhen Xia and Zhengyi Jiang, University of Wollongong 
Sameehan S. Joshi and Narendra B. Dahotre, University Liang Hao, Xidian University... 000 cee 748 
OF NOTIN TEXAS. gien Tasio alacant Me ant EEEE WAAN eR ES 661 The Rolling Process .... 2.0.0... 0. ee eee eee eee 748 
Surface Performance of Structural Materials ............. 661 Lubrication in Rolling. ... 00.0.0. eee 750 
Strategies and Methods to Improve Surface 5 eae hp ee et EEE aT anea 761 
Properties Gre a eee Re ere Rete AE Bea eh eg a etre Fer Se en N, 662 Lubrication and Wear in Drawing Operations 
Laser Materials Interaction ...................-0-000- 664 Gracious Ngaile and James Lowrie, North Carolina State 
Laser Surface Engineering........ 0.0.0.0. eevee eee 664 AEP eh Cts ee fons hs eae ss tence 768 
Laser Surface Heating and Melting.................--. 665 Variables that Affect the Drawing Process............... 768 
Laser-Assisted Coatings............ 00-00. e eee eee 667 Lubrication in Wire Drawing... ..........00.0000 00 ee 710 
Laser Assisted In-Situ Interstitial Coatings .............. 669 Lubrication in Bar Drawing. .... 00.00.00. cece eee ee 775 
Laser-Assisted Metallic Coatings .................000- 671 Lubrication in Tube Drawing. .........0..00.0 0000000 777 
Laser-Assisted High Entropy Alloy Coatings............. 673 Lubrication of the Outer Surface ........0.... 000000005 779 
Laser-Assisted Amorphous Metallic Coatings ............ 673 Lubrication of the Inner Surface..........0..0..0000005 7719 
Laser-Assisted Ceramic Coatings ..................--- 674 Die Wear in Drawing Operations..............0..005. 780 
Laser-Assisted Bioceramic Coatings................004- 676 Tribology of Extrusion 
Laser-Assisted Thin Film Coatings.................... 676 Pradip Saha, The Boeing Company 
Laser-Based Surface-Design Strategies ................. 677 Steven Schmid, University of Notre Dame ...........0044. 784 
Laser-Based Hybrid Strategies for Surface Tepes oP E tewtnes petaotna ce aek rs 784 
Modification... 1... 2... eee EE E eee 681 Mechanics of Extrusion... . 2.0.0.0... cece eee eee 785 
Computational Modeling. ..... 6.6.6... 0... e eee eee. 681 Thermodynamics in Extrusion ..............0.e00 eee 787 
Wear of Hardfacing Alloys Defects ae me a debra she hed Ba meee ae ado Saeed 787 
Revised by G. Fisher and T. Wolfe, InnoTech Alberta........ 688 Extrusion Tooling and Die Design ...............0.05. 789 
Hardfacing Materials... 2.2.1.0... eee eee eee 688 Friction and Lubrication of Extrusion Processes........... 792 
Overlay Deposition... 6.6... 66 e ee eee eee 692 Wear in Extrusion... 2.2.2... .. eee eee ee 794 
SelecttOm nes sad aaea tin elses wee bbls aes Aw aTa a 694 Lubrication and Wear in Forging 
Friction Stir Processing and Surfacing K.D. Clarke and C.J. Van Tyne, Colorado School of Mines. ... 798 
Oyelayo O. Ajayi and Cinta Lorenzo-Martin, Argonne Methods to Measure Lubricant Effectiveness 
National Laboratory .. 0.0.0. ce ee 696 ATW CAL ook ace oe eed ee ee cls ieee eee eee Poke Ms 798 
Friction Stir Processing... ........ 00... e eee eee eee 696 Cold Forging: 3:4 es ee ee Adee tet a te 799 
Critical Aspects of Friction Stir Processing .............. 697 HOt Foreing ense star eira ara Se ech, 8 Ged aE be 801 
Hybrid Processing with Friction Stir Processing........... 700 Factors Affecting Abrasive Wear..............0000055 803 
Surface Engineering by Friction Stir Processing........... 701 Improving Resistance to Abrasive Wear .............4.. 805 
Residiial. Stresses...) fk 5 Pe He Gee ES aE le eas 702 Lubrication and Wear in Sheet Forming 
Tribological Performance........... 0.00. e eee ee eee 702 Kuniaki Dohda, Northwestern University 
Friction Surfacing... 1... 2... ee ee eee 703 Numpon Mahayotsanun, Khon Kaen University 
Surface Texturing Tatsuya Funazuka, Toyama University .. 1.0.0.0. .00 004 eee 808 
Bojan Podgornik, Institute of Metals and Technology........ 706 Deep: Drawing ac. Ses a he ea ee ne dene be Eee ee ak 808 
Surface-Texturing Techniques ......... 0.6... e eee eee 706 Bending An bret etdate aed «ne Rouse da ad feud eR 809 
Characterization of Textured Surfaces.................4. 709 Shearing: jet. oree ea wet a a deters A 809 
Tribological Behavior of Textured Surfaces.............. 710 Galling and Wear Mechanism .............0..000000. 810 
Texturing and Coatings... .. 6.6... 0.6... eee, 715 bübicant s.k Rit ayes eeyies o ad clutter bed es 812 


Copyright © 2017 ASM International® 
All rights reserved 
www.asminternational.org 


ASM Handbook, Volume 18, Friction, Lubrication, and Wear Technology 
George E. Totten, editor 


Friction and Wear of Machine Components............... 817 Friction, Lubrication, and Wear of Internal Combustion Engine Parts 
Victor W. Wong, Massachusetts Institute of Technology 


Friction and Wear of Sliding Bearings Simon C. Tung, Tung Innovation Technology Consulting Inc. .. 899 


Harish Hirani, IIT Delhi and Central Mechanical Engineering Engine Types. aa woe acai cee Biase ana a ote oe ek 899 
Research Institute, India... 0.00 ee 819 Friction and Wear Control...........00 ce eee eeeeeuue 900 
Introduction sser 7h elite ae Shee eda ee a ee hk Ge 819 Breakdown of Friction by Component Mea fon kaa at eta ye Ses 901 
Types of Sliding Bearings... .............. 0000. eee, 819 Friction Reduction by Surface Textures or Coatings........ 905 
Contact Configurations with Lubrication................ 820 Engine Component Materials.........0....0 00000 cee 905 
Friction and Heat Generation................ 00000005 821 Surface Hardening of Iron and Steels .................. 907 
WE o A as VEERE ans: ot gece ai CEE KED gl aM tee clone 821 Advanced Surface Engineering...................00045 907 
Hydrodynamic Sliding Journal Bearings ................ 823 Engine-Component Wear... ... 2... 0.00000 eee 910 
Design of Journal Bearings ...............--.00--05- 825 Example—Inlet Valve and Seat Wear.................. 912 
PU bei ants ees. 35 Mo sek oe Seed bese rw 8k we saline Sus hee Seed. @ ores 827 SUMMA. savin eae aay a Lt e abe ats die A toe 912 
Thick-Film Lubrication... 2.0.0.0... 0.000000 eee eee eee 829 Tribology of Power Train Systems 
Thin-Film Lubrication... 2.0.0.0... cee eee eee 829 H. Rahnejat, R. Rahmani, M. Mohammadpour, and 
Boundary Lubrication... . 2.6... 0.0.0... eee eee eee 830 P.M. Johns-Rahnejat Loughborough University, 

Specific Film Thickness (Lambda Ratio). |... a...n aaan 832 ONCE Kingdom iess, eyit ate Reon ace Carew eesti 916 
Effect of Material Elasticity... .... 0.2... 0... ..00 eae 833 Introduction... ooon aaaea a eee cnet nee nee 916 
Friction and Wear of Rolling-Element Bearings Contact Configuration... 0.0.0... 0... eee eee eee 916 

Revised by Pierre DuPont, UMONS, Faculté Polytechnique Contact Mechanics—Footprint Shape and 
de Mons and Steven Lampman, ASM International........ 836 Elastic Deformation... ........0. 0.0 cece eee eens 917 
Types of Rolling-Element Bearings ..............0000. 837 Gente ais gh Pia Doe hae tee a 918 
Ball Bearings en 052 hte eg ace ate Meade aie Ae Lean A we as al 837 Regimes of Lubrication... ........ 00.000. 0 eee eee 919 
Roller Bearings ©... 1.6... eee ee eee 838 Lubricant Rheology ......... 0... 0.00. eee eee eee 921 
Bearing Materials... . 2.2... eee eee eee eee 840 Predicting Lubricant Film Thickness................... 923 
Lubrication Requirements ........... 0.0000 aee 843 Surface Topography .... 0.0... ccc ccc ee ee nee 923 
Elastohydrodynamic Lubrication. ....... 0.66.0... +0045 843 Friction and Power Loss .......... 000 cee eee eee eee 924 
Grease Lubrication... 2.0... eee eee 845 Piston-Cylinder Conjunctions.............. 000000 eee 926 
Oil Lubrication Feeding Systems ................0000, 846 Engine Bearings........ 0.0... 0c eee eee ee ee eee 928 
Rolling-Contact Fatigue... 0... 0... . eee eee eee 847 Cam-Tappet Contact... 0... 0.0.00 ccc eee eee 930 
Bearing Life-Adjustment Factors .................00-. 848 Transmission and Differential Gearing Systems ........... 931 
Basic Load Ratings... .... 0... 0.00.00 eee eee eee 849 Wear of Steam Turbine and Gas Turbine Components 
Standard Bearing Geometries..................00000. 853 K. Anand, GE Power .. 0... ccc ccc eee eens 935 
Other Factors in Load Rating..............0..02-0005 854 Overview of Wear and Friction Issues in 
Rolling Bearing Friction... 2.2.0.0... 0... 0.0.00 0000. 857 Gas TULDINES ache hac caged Suk er ated Oe Sel a hie 935 
Weare re tas a aa eth Jar Mira ae lated alcove, Eea a a Raai 858 Overview of Wear and Friction Issues in 
Wear- Control: n nice: sauce alter eca eae oacece eas TEG 859 Steam Turbines ne cae He kek i whoo eee aa 935 
Bearing Damage Modes ........... 0.000.000 00 eae 860 Wear Mechanisms and Mitigation in Gas and 

Gas-Lubricated Bearings Steam Turbines. ......0.. 0.000 ccc usores orere rererere 937 

Revised by Frank Wardle, UPM Ltd. .........-- 0000005. 865 Wear and Friction of Sealing Systems.................. 939 
Applications. 6.0... ee eee ees 865 Coatings and Design Considerations................... 942 
Advantages and Disadvantages..............-....000, 865 Suggestions for Future Work ........... 00000 943 
Basic Fluid-Film Characteristics..............00000005 866 Friction, Lubrication, and Wear of Pump and 
Aerostatic Bearings... 2... ... e a a ee 867 Compressor Components 
Precision Aerodynamic Bearings ................-.... 873 Toshiharu Kazama, Muroran Institute of Technology ........ 945 
Compliant Aerodynamic Bearings..................0-, 875 Component Wear in Positive Displacement Pumps......... 945 
Materials for Gas-Lubricated Bearings ................. 878 Component Wear in Turbo-Machinery ...............0. 949 
Surface Coatings... 0.0.0... ta ae a a E E A E ei 878 Wear of Vacuum Pump Components .................-. 951 
Notation es ae ioana og Beene hide ok RA E A i Mate 878 Friction, Lubrication, and Wear of Compressors........... 951 

Friction, Lubrication, and Wear of Gears and Friction and Wear of Seals 

Wind-Turbine Components George K. Nikas, KADMOS Engineering Lid. ............. 957 

Revised by Robert Errichello, Geartech...........0000005 882 Stalicd SOAIS ane hac eit te oe beg Sede ork Sone ea 957 
Gear Tooth Lubrication-Related Failure Dynatic: Seals i.: ee ai e E Se eetigy Sakata R as 958 

MODES eaaeo be aac crises poe RAAN een TAE CAES 882 Seal Wear and Damage—Causes and Solutions........... 963 
Elastohydrodynamic Lubrication. |... sssaaa 888 Guidelines to Reduce Seal Friction and Wear ............ 966 
Lubricant :Selectionie sese eerie ace oa el Sa See Pee es 892 Further Reading... 0.0... cc eee eens 967 
Oil-Lubricant Applications............ 0.00.00 eee eee 892 Friction and Wear of Automotive and Aircraft Brakes 
Selection of Gear Lubricant Viscosity................0. 892 Revised by Bo Hu, North American Höganäs, Inc........... 969 
Application of Gear Lubricants ................0-.04. 893 Brake Friction Materials and Assembly................. 970 
Wind Turbine Failure Modes... 1.0.0... -0 00 eee eee 894 Brake Friction and Wear Characteristics ................ 972 
Gear Life versus... te 895 Brake Lining Wear... 0... 0.0 eee eee 974 
Standardized Gear Tests .... 2... 0.0.0.0 cee eee eee eae 895 Automotive Brake Drum and Disk Wear.............00- 975 
Gear Steels and Heat Treatment..................-..- 896 Brake Frictional Performance..............0.000 eee ee 977 
Surface Roughness and Topography ...............+4-. 896 Brake Noise and Vibration..................00000008 979 
Superfinishing .. 6.6... . a eee eee eee 897 Brake Testing and Evaluations....................00. 980 
Nomenclature... 0... aiea eee ee ee eee eee 897 Toxicity of Brake Formulation and Regulations........... 982 


ASM Handbook, Volume 18, Friction, Lubrication, and Wear Technology 
George E. Totten, editor 


Wear and Tribology in Agricultural Machinery 
Goutam Mohapatra and Satyam S. Sahay, John Deere 
Asia Technology Innovation Center, John Deere 


India Private Ltd y oae e a a a cee 984 
Operating Environment—Agriculture Practices, 
Interactions, and Component Wear.................. 984 
Operating Environment and Materials Parameters— 
Influence on Wear... 0.0... 0 cee eee eee 986 
Soil Condition ses aae tee aed re ie Boece eee eld ek 986 
Operational Parameters .......... 0.0.0.0... 0c eee eee 988 
Component Design... .... 0... 0.0.0... 989 
Selection of Implements .......................000- 990 
Wear Mitigation in Agriculture Equipment .............. 991 
Effect of Coatings on Wear of Implements .............. 994 
Wear Testing and Quantification .................0.000. 996 
Modeling and Simulations in Agriculture Implement Design... 997 
SUMMALY§ a apadi hie Wee Ses alae te SE A a Dovel le de heels S 999 
Condition Monitoring .......................2..000. 1003 
Introduction to Condition Monitoring 
Zakwan Skaf, Cranfield University ...........0 00000005 1005 
Condition-Monitoring Techniques.................... 1005 
Evolution of Maintenance ................ 000000008 1006 
Integrated Vehicle Health Management................ 1007 
Condition Monitoring in Industrial Sectors ............. 1008 
SUMMALY. y seia a od es SAS Be ee ated Ay ae ease 1009 
Wear Particle Analysis 
Noam Eliaz, Tel-Aviv University... 0.0.0.0. eee eee 1010 
The Bathtub Curve... ... 0.0.0... 0000.0 eee 1010 
Condition Monitoring .......... 0.0.00... 0.0002 1011 
In-Service Lubricant Analysis ..................00-. 1011 
Wear Particle Characteristics ..................-00005 1012 
Wear Particle Analysis Techniques................... 1013 
Types of Wear Particles ....... 0... 0.0.0... .0000000. 1018 


xix 


Copyright © 2017 ASM International® 
All rights reserved 
www.asminternational.org 


Applications of Wear Particle Analysis................ 1022 
Case: Stadie. r 2 fed oak desta goth aaaies fe ae acids bis de Sanne AS BET 1025 
Vibroacoustic Monitoring Using Signal-Processing Techniques 
M. Hosseini Fouladi and S. Narayana Namasivayam, 
Taylor’ s University, Malaysia 
M. Ghassem, Universiti Kebangsaan Malaysia 
M.J. Mohd Nor, Universiti Teknikal Malaysia 


Melaka, Malaysia ..... 0.00. 1032 
Signal Processing seeds ekg ess ee esate RA rele ewes 1032 
Some Real-World Applications of Vibroacoustic 
AMAL S18! co ig os lope tingie Se aes ake oo Sieh ca ucac as oT Donate Secon 1038 
Electrical and Motor-Current Signature Analysis 
Revised by Howard W. Penrose, MotorDoc LLC .......... 1040 
Principle of Operation................ 0.000000 eee 1040 
Evaluation of Broken Rotor Bars.................00. 1040 
Evaluation of Broken Shaft....................00.. 1041 
Bearing Fault Detection.............. 0... ...00000, 1042 
Wind Generator and Gearbox Investigation............. 1043 
SUMMA oh chk hes Hapee ete dee ening oe ang ets one seaweed amend 1043 
Radionuclide Methods 
Martin Jech and Claudia Lenauer, AC2T research GmbH.... 1045 
Working Principles... 2.2... . ee eee eee 1045 
PACUV ALON oeri resa aani E E sec TAAN Sis ees RT AEE 1048 
Measuring Radioactivity ............ 0.000.000.0000, 1049 
Wear Measurement Setups (Direct, Indirect)............ 1050 
Calculating Wear from Activity..................0.0. 1051 
How to Interpret Wear Results..................00.0. 1051 
Examples of Using Radioactive Isotopes for Wear 
Measurement so sipoo ae eee eee Oe eee a 1052 
Practical Application... 0.0... 0.0... 0.0.0 1052 
Reference Information..........................000- 1057 
Glossary of Terms ..... e eaen ea EAE a a AE 1059 
ndeki er got a n Beach EE E eae EEE ce E E 1091