一、概述 随着工业技术的不断发展,对各种工业设备与构件的性能要求越来越高,机械构件的使用条件也愈形严格苛刻,因而构件能否长寿命使用就成为工业发展的一个突出的问题。因为不可能无限制地不断选用大量高合金的金属材料制造另件,因而就发展了采用只提高另件或构件表面性能的金属表面处理 I. Overview With the continuous development of industrial technology, various industrial equipment and components of the performance requirements are getting higher and higher, the use of mechanical components are also increasingly stringent conditions of use, so the component can be a long-term use of industrial development has become a Outstanding issues. Because it is not possible to continuously select a large number of high-alloy metal materials to manufacture the other members without any restriction, there has been developed a metal surface treatment using only the surface properties of the other members or members