Abstract
The friction and wear characteristics of silicon carbide in sliding contact were studied in dry atmospheres of air, nitrogen, and argon. The rubbing surfaces and wear particles generated consisted mainly of silicon oxide in air, and retained their original composition of silicon carbide in the inert gases. Interposing wear particles reduced the wear and friction in air, and inversely increased the wear and friction in argon. This indicated that the wear and friction characteristics were improved by interposing wear particles softer and more brittle than the rubbing material itself. By producing a thin surface film composed of soft silicon oxide on hard silicon carbide before a run, the friction and wear characteristics in argon were markedly improved.
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