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Rolling contact fatigue behavior of Cu and TiN coatings on bearing steel substratesThe resistance of copper and TiN coatings on various bearing substrates to high-load rolling contact fatigue (RCF) is investigated. Special attention is given to the lubricating characteristics of copper deposited by ion plating, and the wear resistant characteristics of TiN deposited by ion plating and magnetron sputtering techniques. RCF samples of 440C and AMS 5749 bearing steels were coated. Sputter deposited and ion plated films were on the RCF samples in a range of thickness from about 2000 A to 2 microns. Results showed a marked improvement of the RCF for pure copper tested on 440C, but a degradation for copper on AMS 5749. It is also found that the 2000 A TiN films behave favorably on the 440C and AMS 5749 bearing steels at RCF stress levels of 786 ksi. Scanning electron microscopy, X-ray diffraction, and electron spectroscopy for chemical analysis were used during the investigation.
Document ID
19860032742
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Hochman, R. F.
(Georgia Inst. of Tech. Atlanta, GA, United States)
Erdemir, A.
(Georgia Institute of Technology Atlanta, United States)
Dolan, F. J.
(Georgia Inst. of Tech. Atlanta, GA, United States)
Thom, R. L.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
August 12, 2013
Publication Date
December 1, 1985
Publication Information
Publication: Journal of Vacuum Science and Technology A
Volume: 3
ISSN: 0734-2101
Subject Category
Mechanical Engineering
Accession Number
86A17480
Funding Number(s)
CONTRACT_GRANT: NAS8-35048
Distribution Limits
Public
Copyright
Other

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