稀土铈对9Cr1Mo钢组织及电化学腐蚀性能的影响  

Effects of Rare Earth Ce on Microstructure and Electrochemical Corrosion Properties of 9Cr1Mo Steel

作　　者：富晓阳[1] 杨吉春[1] 王萌[1] FU Xiao-yang YANG Ji-chun WANG Meng(School of Material and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010, China)

机构地区：[1]内蒙古科技大学材料与冶金学院冶金系,包头014010

出　　处：《机械工程材料》2016年第11期88-91,共4页Materials For Mechanical Engineering

基　　金：国家自然科学基金资助项目(51174114);内蒙古科技大学创新基金资助项目(2011NCL063)

摘　　要：制备了稀土铈质量分数分别为0,0.002 0%,0.016 0%的9Cr1Mo钢,采用扫描电镜、能谱分析仪以及电化学工作站等研究了稀土铈对9Cr1Mo钢显微组织及在3.5%(质量分数)NaCl溶液中电化学腐蚀性能的影响。结果表明:稀土铈可以细化试验钢晶粒,减小马氏体片层间距以及晶界和晶内析出相的数量,提高试验钢的电化学腐蚀性能;含稀土铈质量分数为0.002 0%的试验钢具有最佳的耐腐蚀性能。9CrlMo steels containing different contents of rare earth Ce（ its mass fraction is 0,0.002 0% and 0.016 0%） were prepared, and then the effects of Ce on microstructure and electrochemical corrosion properties （in 35wt% NaC1 solution） of the steels were studied by scaning electron microscope, energy dispersive spectrometer and electrochemical workstation. The results show that Ce can reduce the size of grains, martensite layer interval and number of precipitated phase in the grain and at grain boundaries, and improve corrosion resistance of experimental steels. When the mass faction was 0.002 0%, the experimental steel had the best corrosion resistance.

关 键 词：稀土铈 9Cr1Mo钢 电化学腐蚀性能 

分 类 号：TG172.5[金属学及工艺—金属表面处理]