等离子表面冶金技术的现状与发展

双层辉光离子渗金属技术已成功地在普通碳钢表面形成高速钢、其中包括时效硬化高速钢、不锈钢以及镍基合金等；该技术已成功地应用于手用锯条和机用锯条，使其齿部形成高速钢，锯条不仅具有高速钢的切削性能，而且柔韧不断;钛合金表面经离子渗钼等工处理后，Ti6Al4V的耐磨性得到大幅度提高;经离子渗铌等工艺处理后，TiAl金属间化合物的抗高温氧化性能明显改善。在双层辉光离子渗金属技术的基础上，又发展了加弧辉光离子渗金属，双辉钎焊技术，双阴极辉光放电超硬薄膜合成技术，以及陶瓷表面金属化和异性材料焊接技术等。

Development of Plasma Surface Metallurgy Technology

The plasma surface metallurgy technology is a method of the surface metallurgy by using low temperature plasma produced by glow or arc discharge. The double glow surface alloying process,which developed based on the plasma nitriding, is a kind of the plasma surface metallurgy technology. This process, also called as Xu Tec/Xu Loy process, can produce various alloys, such as nickel base alloys and high speed steels,on the surface of common carbon steels. The process has been used to develop a hacksaw blade for hand or power application. It performs as well as standard bimetal blades. Recently the double glow surface alloying process has been applied to titanium and its alloys. A wear and high temperature oxidation resistant alloy has been formed on the surfaces of Ti6Al4V and TiAl. [