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一、前言硫酸是一种强腐蚀性的介质,目前,国内外在应用和发展耐硫酸不锈钢大多是Cr-Ni—Mo—Cu系。如Carpenter—20Cb。627和K合金、新2号、新10号等,它们的合金含量都相当高。而RS型不锈钢是在Cr—Ni—Mo—Cu系不锈钢基础上添加一些微量元素,利用其复合效应,主要是使表面钝化膜的性质得到改善,从而提高不锈钢的耐蚀性。考虑到不锈钢材质的破坏主要为局部腐
I. Introduction Sulfuric acid is a kind of strong corrosive medium. At present, the domestic and foreign applications and development of sulfuric acid-resistant stainless steel are mostly Cr-Ni-Mo-Cu series. Such as Carpenter-20Cb. 627 and K alloy, the new 2, the new 10, etc., their alloy content is quite high. The RS type stainless steel is based on the Cr-Ni-Mo-Cu stainless steel to add some trace elements, the use of its composite effect, mainly to improve the properties of the surface passivation film, thereby enhancing the corrosion resistance of stainless steel. Taking into account the destruction of stainless steel is mainly localized rot