Abstract
This study investigated pretreatment for PVD coating onto cold working die steel corresponding to SKD11. The roughness and height of the carbide of the SKD11 surface increased concomitantly with increasing etching times by both Cr and Ar ion bombardment. The CrN coating adhesion onto the SKD11 changes to the worth, when the carbide thickness was greater than 150 nm. Electron beam irradiation of the SKD11 surface produced about 5-μm-thick melted layers having a smooth surface and improved the CrN adhesion. Furthermore, the corrosion resistance of the CrN coated onto the SKD11 improved after electron beam irradiation.
