The effect of an activated metal surface on the adaptation of boundary adsorption films of lubricants in frequent starts-stops is considered. The dependence of the linear wear of the contact surfaces on the preliminary softening of surface layers during initial cycles of operation has been obtained. It has been found that the introduction of fullerene C{sub}60 and MoS{sub}2 into the base oil И-40 improves the wear resistance of steel 45 due to the formation of boundary films reducing the effect of the normal load and friction force. This appears as the shrinkage of the work hardening zone in subsurface layers.
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