2017 年 58 巻 4 号 p. 264-269
This paper proposes an electric contact model considering film resistance, such as an oxide layer, and describes a method for analyzing electric potential distribution and temperature distribution around a contact spot. As a result of the analysis, several laws governing the relationship between electric potential and temperature have been found, and a formula to calculate rising temperature was established using a factor calculated from contact resistance and film resistance. Finally, this paper proposes a map quantitatively showing transition conditions between wear modes.