Evaluation and Characterization of Ceramic Bearing Materials

Report No. ARL-TR-1910
Authors: Huang, Paul J.; Hubbard, Clifford W.; Gilde, Gary A.; Swab, Jeffrey J.
Date/Pages: March 1999; 40 pages
Abstract: This report discusses the findings from one phase of our ongoing work to evaluate materials for Army bearing systems. The objective of this phase is to determine the response and longevity of various silicon nitride Si3N4 materials to rolling contact fatigue (RCF) using hybrid and all-ceramic systems. Tests were conducted under regular lubrication and lubrication-starved conditions for extended periods. A correlation between RCF life and the hardness, strength, and microstructure of each silicon nitride is made. The various silicon nitride materials evaluated in these RCF tests were selected on the basis of providing a varied response to the RCF parameters and conditions used.
Distribution: Approved for public release
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Last Update / Reviewed: March 1, 1999