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
刘俊茹, 王智民, 王雪怡
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作者单位：(西安理工大学 材料科学与工程学院, 陕西 西安 710048)
中文关键字：镁合金； Ca； Ce； 微观组织； 腐蚀
英文关键字：magnesium alloy; calcium; cerium; microstructure; corrosion
中文摘要：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。
英文摘要：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%.