一、前言RS-2不锈钢(钢号由上海钢铁研究所定)系Cr-Ni-Mo-Cu钢添加微量元素而成,本文着重研究添加微量元素(Nb、Zr、V、W、Re、N等)对表面膜耐腐蚀性质的影响。应用现场挂片、点蚀电位、椭圆术、X射线衍射仪等方法和手段,对微量元素的作用机理进行了探研。结果表明复合添加某些特定的微量元素能提高不锈钢表面膜的热力学稳定性,增强抗点蚀能力和机械损伤后的自修补能力,以及降低不锈钢在硫酸、磷 I. INTRODUCTION RS-2 stainless steel (made by Shanghai Research Institute of Iron and Steel) is made of Cr-Ni-Mo-Cu steel added with trace elements. This paper focuses on the addition of trace elements (Nb, Zr, V, W, Re, N, etc. ) On the corrosion resistance of the surface film properties. Application site coupons, pitting potential, ellipse, X-ray diffraction and other methods and means of trace elements in the mechanism of action were explored. The results show that adding certain trace elements in combination can improve the thermodynamic stability of the stainless steel surface film, enhance the anti-pitting ability and self-repair ability after mechanical damage, and reduce the corrosion resistance of stainless steel in sulfuric acid, phosphorous