抗硫化氢腐蚀QPQ工艺探讨  

Discussion on QPQ Techniques of Improving Corrosion Resistance in H_2S Environment

作　　者：李远辉[1] 丁义超[1] 王静[1] 姜自莲[1] 

机构地区：[1]成都电子机械高等专科学校实训基地,四川成都610031

出　　处：《热加工工艺》2011年第24期222-224,共3页Hot Working Technology

基　　金：国家自然科学基金资助项目(51071130)

摘　　要：通过抗硫化氢恒负荷拉伸试验,分析探讨了高温QPQ处理的25CrMnMo钢试样在饱和硫化氢溶液中的腐蚀机理。通过对常规QPQ处理与高温QPQ处理的腐蚀现象对比可知,在饱和硫化氢溶液环境下,QPQ处理试样阳极铁溶解导致的腐蚀是化合物层中析出了γ'-Fe4N的结果。并对抗硫化氢腐蚀QPQ工艺进行了初步探讨。By constant stress tensile test, the mechanism of corrossion at high temperature QPQ treated 25CrMnMo steel specimens in H2S environment was analyzed and discussed. Through comparison the corrosion phenomena of regular and high temperature QPQ treated specimens, the y＇-Fe,N is precipitated from the 8-Fe2.3N compound layer and becomes corrosion substance in saturated H2S solution. And the QPQ techniques are also discussed.

关 键 词：高温QPQ处理 抗蚀性 盐浴渗氮 抗硫化氢腐蚀 

分 类 号：TG156.3[金属学及工艺—热处理]