摘要
采用电化学交流阻抗谱法(EIS)和扫描电镜(SEM)等方法研究了含镧铈混合稀土对Cr13型马氏体不锈钢在3.5%Na Cl溶液中耐腐蚀性的影响。分析了交流阻抗等效电路图中电化学参数随稀土含量变化的演变规律。结果表明,相比未加稀土的钢,稀土含量为0.034%的钢在溶液中生成的锈层薄、致密且更具保护性;镧铈混合稀土提高了Cr13型不锈钢的耐腐蚀能力。
The effects of La and Ce on the corrosion resistance of Crl3 stainless steel in 3.5% NaCl solution were investigated by electrochemical impedance spectroscopy （EIS） and scanning electron microscopy （SEM）. The evolution rule of electrochemical parameters in the EIS equivalent circuit diagram changing with rare earth content was analyzed. The results show that the rust layer of Crl3 stainless steel with 0.034% RE is thinner, denser and more protective compared with the steel without rare earth. The rare earth La and Cc can improve the corrosion resistance of Crl3 stainless steel.
出处
《热加工工艺》
CSCD
北大核心
2016年第6期119-121,126,共4页
Hot Working Technology
基金
国家"863"计划项目(2010AA03A407)
国家自然科学基金项目(51474093)
河北省自然科学基金项目(E2013209307
E2015209243)
河北省教育厅研究项目(QN2014080)资助
关键词
稀土
马氏体不锈钢
耐蚀性能
交流阻抗
rare earth
martensitic stainless steel
corrosion resistance
electrochemical impedance spectroscopy
