Study on Tribology of Silicon Nitride Ceramic Tappet

To elucidate the tribological behavior of the Si sub 3 N sub 4 ceramic used in automobile engine, a series of tests was carried out to measure the friction coefficient and wear resistance of Si sub 3 N sub 4 during lubricated sliding against metals. A Timken type test machine and a spring loaded wea...

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Bibliographic Details
Published in:Journal of lubrication technology 1993-04, Vol.115 (2), p.295-298
Main Authors: Wang, F-X, Cheng, Y-Q, Haung, L-H
Format: Article
Language:English
Online Access:Get full text
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Summary:To elucidate the tribological behavior of the Si sub 3 N sub 4 ceramic used in automobile engine, a series of tests was carried out to measure the friction coefficient and wear resistance of Si sub 3 N sub 4 during lubricated sliding against metals. A Timken type test machine and a spring loaded wear test machine were used for this study. Tests were also conducted with metal against metal pairs for comparison. The simulation tests of hot-pressed Si sub 3 N sub 4 ceramic tappet against metal cam pairs were conducted on a single cam-followed test machine. The test results showed not only that the Si sub 3 N sub 4 ceramic has excellent wear resistance, but also that the wear of the metal parts in contact with the Si sub 3 N sub 4 ceramic decreased. These results were supported by engine (i.e. steel and cast iron parts) bench test results.
ISSN:0022-2305