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用等离子体源离子渗氮，即低能（１～３ｋｅＶ）、超大剂量（１０１９～１０２０ｉｏｎｓ／ｃｍ２量级）Ｎ＋注入－同步扩散改性技术，在２８０℃和３８０℃下处理１Ｃｒ１８Ｎｉ９Ｔｉ奥氏体不锈钢，获得了最大深度分别为１．６μｍ和１０．６μｍ，固溶Ｎ的最高原子浓度均约为２５％的Ｎ过饱和面心立方相（γＮ）改性层．销－盘磨损试验表明：在２ｍ／ｓ和较宽负荷范围（等效正应力０．２～２．８ＭＰａ）条件下，高硬度（ＨＫ０．１Ｎ２２００）的γＮ相改性层具有较高的承载能力和较长的耐磨寿命．高度过饱和Ｎ在母相奥氏体中的固溶强化作用，是使等离子体源离子渗氮奥氏体不锈钢耐磨性提高的主要原因．
1Cr18Ni9Ti austenitic stainless steel was treated with ion source nitriding at low temperature (1 ~ 3 keV) and very large dose (1019 ~ 1020 ions / cm2) by N + implantation and simultaneous diffusion modification techniques at 280 ℃ and 380 ℃, The N supersaturated face centered cubic phase (γN) modified layer with the maximum depth of 1.6μm and 10.6μm and the highest atomic concentration of the solute N of about 25% were obtained. The pin-plate wear test shows that the γN phase modified layer with high hardness (HK0.1N2200) has a higher bearing capacity at 2m / s and wider load range (equivalent normal stress 0.2 ~ 2.8MPa) Ability and longer wear life. High degree of supersaturation N in the matrix austenite solid solution strengthening effect is to make the plasma source nitriding austenitic stainless steel wear resistance is the main reason.