浅析盐卤中微量CO_2和还原物对2205双相不锈钢腐蚀影响  

Brief Analysis on Influence of the Corrosion of Trace Amount CO_2 and Reducing Substance in Brine to 2205 Duplex Stainless Steel

作　　者：李波[1] 刘昌辉 彭传丰[1,3] 曾莉[1] 

机构地区：[1]自贡市轻工业设计研究院有限责任公司,四川自贡643000 [2]井矿盐四川省重点实验室,四川自贡643000 [3]四川久大制盐有限责任公司,四川自贡643000

出　　处：《中国井矿盐》2013年第6期5-7,10,共4页China Well and Rock Salt

摘　　要：2205双相不锈钢在介质环境比较恶劣(如海水、盐卤中)的条件下,抗腐蚀性能明显优于普通奥氏体不锈钢,但该材料在制盐行业推广应用过程中,发生过较严重的腐蚀事故。本文通过实验研究,发现在含有微量CO2和还原物的制盐卤水中,其铁素体容易被H2S等还原物选择性溶解,继而造成较严重的腐蚀。the corrosion resistance of 2205 duplex stainless steel is better than common austenitic stainless steel in the bad medium environment 〈such as sea water, brine〉,but this material caused serious corrosion accident in the promotion and appication in salt industry.This paper find out that ferrite is easy to be selective dissolved by H2S and other reducing substance in the brine which contains trace amount CO2 and reducing substance and then cause serious corrosion.

关 键 词：2205双相不锈钢 二氧化碳 腐蚀 

分 类 号：TS36[轻工技术与工程]