Analysis of Temperature Fields at High-Speed Friction of Inorganic Materials to Control their Friction-Induced Thermal Fatigue

Abstract

Temperature distribution in thin surface layers of rubbing bodies has been studied experimentally at high sliding velocities. The material of the surface layers is shown to undergo severe thermal loading. Temperature distribution comprising two portions, which differ in temperature gradients, is typical for the mated materials having substantially different hardnesses and for similar materials with strong adhesion at the interface. The existence of a subsurface heat source has been proved. Temperature distribution having a maximum under the friction surface of one of the pair’s elements has been registered for the silica glass – steel pair. Optical-electron scanning technique has been modified and used for the experimental study of temperature distribution in depth of thin surface layers of rubbing bodies at high sliding velocities. A method for determining temperature fields in the zone of machining of hard inorganic materials has been developed and used.