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Tribological Behavior of a Si 3 N 4 /Carbon Short Fiber Composite under Water Lubrication
Author(s) -
Hyuga Hideki,
Jones Mark I.,
Hirao Kiyoshi,
Yamauchi Yukihiko
Publication year - 2004
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2004.00699.x
Subject(s) - tribology , composite number , materials science , lubrication , composite material , friction coefficient , layer (electronics) , carbon fibers , fiber , coefficient of friction , aqueous solution , dry lubricant , chemistry
The tribological behavior of monolithic Si 3 N 4 and a Si 3 N 4 /carbon fiber composite has been assessed under high load and low speeds in an aqueous environment. The results showed that the friction coefficient of the Si 3 N 4 was not significantly reduced when compared with dry sliding, and this was attributed to the failure to maintain a lubricating layer between the solid–solid surfaces. In the case of the composite, the initial high friction coefficient was reduced shortly after the beginning of the wear test and maintained a low value (about 0.03) throughout. This was attributed to the solid lubricating effect of the composite resulting in lower stress at the contact asperities, preventing the removal of the lubricating layer.