超级13Cr与高强15Cr马氏体不锈钢在酸化液中的耐蚀性能对比
Comparison for Corrosion Properties of Super 13Cr and High Strength 15Cr Martensitic Stainless Steels in Acid Solution
摘 要
通过在高温(120 ℃)、高压(10 MPa)和鲜酸(10%HCl+1.5%HF+3%HAc+5.1%TG201缓蚀剂)条件下的腐蚀试验, 对超级13Cr和高强15Cr马氏体不锈钢在此苛刻工况条件下的耐蚀性及其与酸化缓蚀剂的匹配性进行对比试验。结果表明: 超级13Cr和高强15Cr马氏体不锈钢在此条件下的均匀腐蚀速率分别为14.551 6, 13.495 4 mm·a-1, 远低于相关标准要求; 酸化缓蚀剂与两种试验钢的匹配性均较好, 但并不能防止点蚀的发生, 与高强15Cr钢相比, 超级13Cr钢的点蚀速率较高, 点蚀密度大; 高强15Cr钢在鲜酸中的耐蚀性要优于超级13Cr钢的。
鲜酸
酸化缓蚀剂
腐蚀速率
点蚀
martensitic stainless steel
live acid
acidizing corrosion inhibitor
corrosion rate
pitting
Abstract
Comparative live acid (10%HCl+1.5%HF+3%HAc+5.1% TG201 inhibitor) experiment of corrosion resistance and matching ability of acidizing corrosion inhibitor in severe working environments of super 13Cr and high strength 15Cr martensitic stainless steels were investigated through high temperature and high pressure tests.The results show that the uniform corrosion rate of super 13Cr and high strength 15Cr martensitic stainless steel in severe working environments were 14.551 6 mm·a-1 and 13.495 4 mm·a-1 respectively, and those were far lower than standard specifications and requirements. Acidizing corrosion inhibitor displayed a good matching ability with super 13Cr and high strength 15Cr martensitic stainless steels, but appearance of pitting could not be fully prevented by adding acidizing corrosion inhibitor, and the pitting rate and pitting density of super 13Cr were greater than high strength 15Cr martensitic stainless steel. The corrosion resistance of high strength 15Cr martensitic stainless steel in live acid was better than that of the super 13Cr steel.
中图分类号 TG172.8
所属栏目 材料性能及其应用
基金项目 国家自然科学基金资助项目(51271146)
收稿日期 2013/7/13
修改稿日期 2014/3/16
网络出版日期
作者单位点击查看
备注王立翀(1986-), 男, 蒙古族, 内蒙古赤峰人, 硕士研究生。
引用该论文: WANG Li-chong,LV Xiang-hong,ZHAO Rong-huai,ZHAO Guo-xian,LI Na. Comparison for Corrosion Properties of Super 13Cr and High Strength 15Cr Martensitic Stainless Steels in Acid Solution[J]. Materials for mechancial engineering, 2014, 38(5): 57～61
王立翀,吕祥鸿,赵荣怀,赵国仙,李娜. 超级13Cr与高强15Cr马氏体不锈钢在酸化液中的耐蚀性能对比[J]. 机械工程材料, 2014, 38(5): 57～61
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