抄録
A method for fatigue reliability evaluation of Hybrid DLC to ensure safe design is proposed. This concept represents a major contribution to the fatigue reliability design method for surface modification components, namely "The influence of surface modification processing on materials with internal failures." The fatigue reliability of high-speed tool steel SKH-51, coated with Hybrid DLC, is described. Hybrid DLC is a compound film process that produces a DLC film by P-CVD on a PVD system TiN hard film. This material follows the weakest link model. The variation in the inclusion leading to internal destruction was examined statistically. Convergence of the variation produced in the S-N diagram was tried. The influence of coating processing on fatigue fracture mechanism was considered. In particular attention was paid to change due to the heat treatment history of the base material. The industrial significansce of the acquired knowledge was examined.
