Heat Transfer between Metallic Surfaces in Contact : 3rd Report, The Effect of Oxidation of Contacting Surfaces

Abstract

The effect of the oxidation of surfaces on thermal contact resistance is investigated. If the surface of a metal is oxidized, the thermal contact resistance becomes greater and its change with the increase of contact pressure is slower than in pure metal contact. From the theoretical analysis these phenomena are explained only by the fact that the oxide of a metal has poor thermal conductivity compared with the pure metal.