Effect of pressure on the friction, wear, and surface properties of the transition metals
A study was made of the effect of pressure on the friction, wear, and surface microhardness of some transition metals of Groups V, VI, and VIII sliding under dry friction conditions in a vacuum.
The existence is demonstrated of certain “threshold” pressures at which the frictional force and wear sharply increase. The microhardness of sliding surfaces at first rises and then falls.
The increase in frictional force is attributable to the fact that, with rise in pressure, the type of linkage between the atoms in the sliding surfaces in contact changes. The wear becomes more intense when the zone with a critical dislocation density moves away from the surface with rise in pressure.
KeywordsDislocation Density Surface Property Group Versus Frictional Force Friction Condition
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