长期以来,随着刀具材料的不断改进,刀具的切削性能已有较大的提高,但是刀具材料韧性与硬度之间的矛盾一直未能够很好的解决。近年来,金属切削刀具表面气相沉积技术的发展为刀具材料解决了这一矛盾。特别是物理气相沉积法(简称PVD法)用于高速钢刀具,使高速钢刀具涂覆TiN或TiC等超 For a long time, with the continuous improvement of cutting tools, the cutting performance of cutting tools has been greatly improved, but the contradiction between tool toughness and hardness has not been solved well. In recent years, the metal cutting tool surface vapor deposition technology for the development of tool materials to solve this contradiction. In particular, the physical vapor deposition method (referred to as PVD method) for high-speed steel cutting tools, high-speed steel cutter coated with TiN or TiC