Ca和稀土元素Ce的复合添加对镁合金组织和耐蚀性的影响  

Effect of Combinative Addition of Ca and RE Ce on Microstructure and Corrosion Resistance of Magnesium Alloy

作　　者：刘俊茹[1] 王智民[1] 王雪怡[1] 

机构地区：[1]西安理工大学材料科学与工程学院,陕西西安710048

出　　处：《热加工工艺》2011年第16期55-58,共4页Hot Working Technology

摘　　要：通过金相显微镜(OM)、扫描电镜(SEM)、能谱分析(EDS)及X射线衍射分析(XRD)研究了添加微量的稀土元素Ce对含2%Ca的AZ102微观组织形貌的影响;并利用质量损失腐蚀、电化学腐蚀及腐蚀形貌对合金在3.5%NaCl溶液中的腐蚀行为进行研究。结果表明,添加0.5%的稀土元素Ce,铸态组织得到明显细化,耐腐蚀性能提高。The effects of rare earth element cerium on microstructure of added 2% Ca AZ102 magnesium alloys were investigated by OM, SEM, EDS and XRD. The mass loss measurement, electrochemical corrosion technique and corrosion morphology were employed to study their corrosion behaviour in 3.5%NaCl solution. The results indicate that the casting microstructure is obviously refined and the corrosion resistance is significantly improved when the addition of Ce is 0.5%.

关 键 词：镁合金 CA CE 微观组织 腐蚀 

分 类 号：TG146.22[一般工业技术—材料科学与工程]