Abstract
Micro press dies coated with DLC that has excellent performance for wear and friction have been expected for press processes. However, improvement of the adhesion of DLC coating is especially to apply to strong plasticity processing. There is the weak point that the adhesion of DLC coating is low, because high compression stress remains in the DLC coating inside. Therefore, we examined possibility to improve the adhesion of DLC coating by optimization of the DLC coating condition. In addition, we suggested that we made micro size dimples on DLC coating surface and examined possibility to improve tribology characteristics by maintaining lubricant in the dimples.
