摘要
以加入不同含量稀土元素镧的节镍铬锰氮不锈钢为对象,采用交流阻抗和极化曲线分析技术,对节镍铬锰氮不锈钢在周浸腐蚀环境下的电化学行为进行了研究。通过试验结果分析得出：加入质量分数为0~0.014%镧元素,随着镧含量增加,基体的电极电位提高;在体积分数3.5%Na Cl溶液中模拟海洋大气腐蚀的48天内,节镍铬锰氮不锈钢的耐蚀性随稀土镧含量增加,耐蚀性先增加后减小,含稀土镧质量分数为0.004 9%的节镍铬锰氮不锈钢的耐蚀性最好。
Low-nickel Cr-Mn-N stainless steel with different content of rare earth La element was the research object, and the electrochemical behavior was studied by electrochemical impedance spectrum and polarization curve in the cyclic immersion corrosion environment. The experimental result shows that rare earth element La can affect the electrode potential of Low-nickel Cr-Mn-N stainless steel. When the content of La element was in the range of 0-0.014%, the amount of rare earth to be added was more, the substrate electrode potential of the stainless steel was higher. When Low-nickel Cr-Mn-N stainless steel contained the 0.004 9% of La element, the corrosion resistance was best in 3.5% Na Cl solution for 48 days of simulation of atmospheric corrosion, but the content of La element exceeded a certain range, the corrosion resistance decreased.
出处
《钢铁》
CAS
CSCD
北大核心
2014年第10期71-75,共5页
Iron and Steel
关键词
稀土元素LA
节镍铬锰氮不锈钢
耐蚀性
rare earth element La
low-nickel Cr-Mn-N stainless steel
corrosion resistance
