| Super304H奥氏体不锈钢的晶间腐蚀性能 |
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| 引用本文： | 张春雷,任延杰,柯金云,葛剑.Super304H奥氏体不锈钢的晶间腐蚀性能[J].长沙理工大学学报(自然科学版),2013(3):85-89. |
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| 作者姓名： | 张春雷 任延杰 柯金云 葛剑 |
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| 作者单位： | [1]广东电网公司电力科学研究院,广东广州510600 [2]长沙理工大学能源与动力工程学院,湖南长沙410004 |
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| 基金项目： | 基金项目：南方电网公司科技资助项目（K-GD2012-385）;湖南省教育厅科研资助项目（138128）. |
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| 摘 要： | 采用电化学动电位再活化法(EPR)和电化学阻抗谱(EIS)研究了固溶态和敏化态Super304H奥氏体不锈钢在0.5mol/L H2SO4+0.01mol/L KSCN溶液中的晶间腐蚀性能.EPR结果表明,固溶态与敏化态的Super304H不锈钢均无晶间腐蚀倾向;相对而言,敏化态Super304H不锈钢的晶间腐蚀敏感性高于固溶态不锈钢.电化学阻抗谱结果表明,两种Super304H不锈钢的阻抗谱特征相同,敏化态不锈钢的电荷转移电阻值比固溶态低一个数量级,表明敏化处理后不锈钢抗腐蚀性能下降.
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| 关 键 词： | Super304H 晶间腐蚀 电化学动电位再活化法 电化学阻抗谱 |
Intergranular corrosion of Super304H austenite stainless steel |
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| ZHANG Chun-lei,REN Yan-jie,KE Jin-yun,GE Jian.Intergranular corrosion of Super304H austenite stainless steel[J].Journal of Changsha University of Science and Technology:Natural Science,2013(3):85-89. |
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| Authors: | ZHANG Chun-lei REN Yan-jie KE Jin-yun GE Jian |
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| Institution: | 1. Electric Power Research Institute,Guangdong Power Grid Corp, Guangzhou 510600,China 2. School of Energy and Power Engineering, Changsha University of Science and Technology, Changsha 410004, China) |
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| Abstract: | Electrochemical potentiodynamic reactivation（EPR） and electrochemical imped- ance speetra（EIS） are employed to investigate the intergranular corrosion of solid-solution and sensitilized Super304H austenite stainless steel in 0. 5 mol/L H2SO4 ＋ 0. 01 mol/L KSCN solution. The results of EPR test show that sensitilized and solid-solution Su- per304H exhibit excellent intergranular corrosion resistance. Sensitivity to intergranular corrosion of sensitilized Super304H is higher than that of solid-solution steel. The charac- teristics of electrochemical impedance spectra of solid-solution and sensitilized Super304H are similar and the charge transfer resistance of sensitilized Super304H is smaller than that of solid-solution steel by an order of magnitude indicating its corrosion resistance decreased. |
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| Keywords: | Super304H intergranular corrosion electrochemical potentiodynamic reactiva-tion electrochemical impedance spectra |
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