结构钢等离子氮碳共渗与氧化复合处理概述和应用

Summary and Application of Duplex Treatment of Plasma Nitrocarburizing and Post-oxidation for Structural Steel

主要阐述了结构钢经过等离子氮碳共渗后表面生成高硬度的化合物层(主要相成分是Fe2～3N和Fe3C),提高了结构钢的抗磨损性能;等离子氮碳共渗完后紧接着进行等离子氧化处理,在氮碳化合物层的表面生成一层致密的氧化膜(主要是Fe3O4相),显著提高了其抗腐蚀性能。同时也概述了等离子氮碳共渗与氧化复合处理的原理和相比于以往氮化处理的优点,介绍了复合处理现在在工业中的应用,最后指出该复合处理目前存在的问题,并对未来的发展前景进行了展望。

The high hard compound layer （the main phase composition are Fe2～3N and Fe3C） was received by plasma nitrocarburizing, and the compound layer significantly improved the wear resistance of structural steel. A compact oxide film （main Fe3O4 phase） was received on the compound layer by oxidation treatment after plasma nitrocarburizing, and the oxide film remarkable improved the corrosion resistance of structural steel. At the same time, the principles of plasma nitrocarburizing and post-oxidation treatment and the merits compared with nitrogen treatment in the past were summarized, and duplex treatment used in industry was introduced. In the end, the problems of duplex treatment at present was pointed out and the prospect of duplex treatment was put forward.