１Ｃｒ１８Ｎｉ９Ｔｉ不锈钢的Ｎ￣＋注入态，Ｎ－Ｃ－Ｏ共渗及Ｎ－Ｃ－Ｏ共渗＋注入复合态的表面改性进行了研究。结果表明：复合态由于同时具有一定厚度的改性层与非晶态表面，而达到了耐磨性及抗蚀性的最佳统一。Ｘ射线低角度掠射技术（ＧＩＸＲＤ）及超显微硬度计ＵＭＨＴ－３被用于Ｎ~＋注入层的组织结构分析与硬度表征，并采用俄歇能谱仪（ＡＥＳ）测量离子注入层的氮浓度分布，同时还讨论Ｎ￣＋注入对提高Ｎ－Ｃ－Ｏ共渗态抗蚀性能的贡献及其机理。 1Cr18Ni9Ti stainless steel N ~ + injection state, N-C-O co-infiltration and N-C-O co-infiltration + injection composite surface modification was studied. The results show that the composite state achieves the best uniform abrasion resistance and corrosion resistance by having both a modified layer and an amorphous surface with a certain thickness. The X-ray low-angle grazing technique (GIXRD) and the ultra-microhardness tester UMHT-3 were used for the structural analysis and hardness characterization of the N ~ + implanted layer. The ion implantation layer was measured by Auger spectroscopy (AES) Nitrogen concentration distribution, and also discuss the contribution and mechanism of N ~ + implantation to improve the corrosion resistance of N-C-O co-infiltration.