Abstract

The influence of boundary layers on friction was investigated using a Bartel lubrimeter. Boundary layers have only a limited life and are re-formed in the contact area. A minimum specific pressure is required to deposit a solid lubricant film. The addition of MoS 2 lowers friction and frictional temperature. Some antiwear extreme pressure additives increase friction and others reduce friction and friction temperature. Some boundary layers tenaciously adhere to the surface and are only slowly worn away.

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