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Rolling Contact Fatigue of Tic-Coated Bearing Balls

Published online by Cambridge University Press:  10 February 2011

G. Radhakrishnan ,
J. C. Uht ,
W. Park ,
M. R. Hilton ,
P. M. Adams ,
P. C. Ward ,
E. G. Herbert  and
B. N Lucas
G. Radhakrishnan
Affiliation:
Mechanics and Materials Technology Center, The Aerospace Corporation, Los Angeles, CA
J. C. Uht
Affiliation:
Mechanics and Materials Technology Center, The Aerospace Corporation, Los Angeles, CA
W. Park
Affiliation:
Mechanics and Materials Technology Center, The Aerospace Corporation, Los Angeles, CA
M. R. Hilton
Affiliation:
Mechanics and Materials Technology Center, The Aerospace Corporation, Los Angeles, CA
P. M. Adams
Affiliation:
Mechanics and Materials Technology Center, The Aerospace Corporation, Los Angeles, CA
P. C. Ward
Affiliation:
MPB Corporation, Keene, NH
E. G. Herbert
Affiliation:
Nano Instruments, Inc., Oak Ridge, TN 37830
B. N Lucas
Affiliation:
Nano Instruments, Inc., Oak Ridge, TN 37830
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Abstract

Advanced materials are being designed and tested for high-stress, high-cycle ball bearing applications. Important information about the tribological performance of these materials is gained through rolling contact fatigue (RCF) measurements. No such data have been reported to date for hybrid bearings consisting of titanium carbide (TiC)-coated REX20 steel balls and REX20 steel raceways. Chemical vapor deposition (CVD) was used for depositing the TiC coating. In this paper, we present the first report of the effects of RCF tests on this particular combination of hybrid bearings. Post-test characterizations of these bearings are discussed. Our investigations include plan-view and cross-sectional scanning electron microscopy, chemical compositional analyses, X-ray diffraction, and nano-indentation measurements. Results of these investigations provide a detailed understanding of the TiC coating on REX20 steel balls following extended rolling contact.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 522: Symposium T – Fundamentals of Nanoindentation & Nanotribology , 1998 , 445
Copyright
Copyright © Materials Research Society 1998

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