一、渗氮技术发展历史的简单回顾渗 氮是通过在金属表面渗入氮原子获得强化的一种金属表面热处理工艺。在脉冲等离子体渗氮技术诞生以前 ,它经历了固体、液体、气体和直流等离子体渗氮几个阶段。７０年代 ,由于德国首先在阴极气隙保护专利方面的发明 ,直流等离子体渗氮技术得到 A Brief Review of the History of Nitriding Technology Nitriding is a metal surface heat treatment process that is enhanced by the infiltration of nitrogen atoms into the metal surface. Prior to the birth of pulsed plasma nitriding, it underwent several stages of nitriding of solids, liquids, gases and DC plasma. In the 1970s, due to the invention of Germany first in cathodic air gap protection patents, DC plasma nitriding technology