Effects of Heating Time in Substrate Post Quenching on Mechanical Properties of TiN Film

Abstract

A specimen which substrate was quenched after TiN coating was prepared, and the effects of heating time in the post quenching on the mechanical properties of TiN film were investigated. The residual stress and the hardness of TiN film were decreased with increasing the heating time in the substrate post quenching. The adhesive strength and the substrate hardness were increased by the substrate post quenching. With increasing the heating time, they once increased and then became constant from a heating time. In order to improve the adhesive strength and the substrate hardness with minimizing the decreases of the residual stress and TiN hardness, it is necessary to quench the steel substrate in the minimum heating time in which the adhesive strength and the substrate hardness are improved.