Cr25Mn10Mo4Ni2N双相不锈钢耐蚀性能的研究  

Effect of Corrosive Media on the Corrosion Resistance of Casting Cr25Mn10Mo4Ni2N Duplex Stainless Steel

作　　者：卢奇敏[1] 向红亮[1] 杨彩萍[1] 刘东[1] 

机构地区：[1]福州大学机械工程及自动化学院

出　　处：《特种铸造及有色合金》2014年第7期696-700,共5页Special Casting & Nonferrous Alloys

基　　金：福建省高等学校新世纪优秀人才支持计划资助项目(JA10014)

摘　　要：采用中频感应炉制备了节Ni型Cr25Mn10Mo4Ni2N双相不锈钢并进行了固溶处理。利用动电位极化曲线及交流阻抗谱技术研究了材料的耐蚀性能,并选取2205双相不锈钢及316L奥氏体不锈钢作为对比,研究了3种材料在人工海水、模拟油田及模拟地层水介质中的腐蚀行为。结果表明,节Ni型Cr25Mn10Mo4Ni2N双相不锈钢耐蚀性能最好,2205双相不锈钢次之,316L奥氏体不锈钢耐蚀性能最差;材料在模拟地层水介质中的腐蚀程度最严重,其次为模拟油田介质,人工海水介质腐蚀程度最低。An economical nickel-saving casting duplex stainless steel Cr25Mn10Mo4Ni2N was melt in mid-frequency induction furnace and was treated by solid solution treatment. The pitting corrosion prop- erty of treated steel was investigated by means of anodic polarization curve and electrochemical impend- ence spectroscopy（EIS）. The corrosion resistance of Cr25Mn10Mo4Ni2N, 2205 duplex stainless steel and 316L austenitic stainless steel in artificial seawater and simulated oilfield water as well as simulated formation water was evaluated comparatively. The results indicate that the nickel-saving casting Cr25Mn10Mo4Ni2N duplex stainless steel exhibits excellent anti-pitting corrosion property, and then 2205 duplex stainless steel, while the 316L austenitic stainless steel is the worst. The corrosion media of simulated formation water shows the strongest aggressive corrosion, followed by the simulated oilfield water, and the last is artificial seawater.

关 键 词：节Ni型铸造双相不锈钢 耐蚀性能 人工海水 

分 类 号：TG142.71[一般工业技术—材料科学与工程]