Abstract
The mechanism of wear of marginally lubricated metal surfaces was investigated under high nominal pressure, low speed, and small amplitude reciprocating sliding. Oxygen-free high-conductivity (OFHC) copper was slid against HY100 steel, alloy 718, and OFHC copper counterfaces in an “inert” mineral oil environment. The results have shown that the mechanism of friction in steady state was plowing. The depth of deformed region in the copper bearing specimen was proportional to the coefficient of friction. Moreover, the wear was related to the friction coefficient by a fourth-power relationship. Variation in the coefficient of friction during sliding reflected changes in the surface topography due to metal transfer across the interface. Topographical changes and subsurface deformation structures produced during sliding suggest that material transfer across the sliding interface is as important as the subsurface mechanical behavior of materials in determining the friction coefficient and wear rates. Presented a...
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