稀土Ce对Pb-Mg-Al屏蔽材料组织和耐蚀性的影响  

Effect of Element Ce on Microstructure and Corrosion Resistance of Pb-Mg-Al Shielding Material

作　　者：鲁俐[1] 孙勇[1] 段永华[1] 赵如龙[1] 殷国祥[1] 

机构地区：[1]云南省新材料制备与加工重点实验室,云南昆明650093

出　　处：《金属功能材料》2010年第3期25-27,41,共4页Metallic Functional Materials

基　　金：国家自然科学基金项目(基金号:50871049)

摘　　要：采用腐蚀失重试验和动电位极化曲线扫描测试手段,研究Ce元素对Pb-Mg-Al合金在3.5%(质量)NaCl溶液中腐蚀性能的影响。研究结果表明:随着Ce含量的增加,稀土Ce与合金中的Al形成弥散、均匀的金属间化合物Al4Ce,进一步提高了合金的耐蚀性。Effects of Al and Ce addition on corrosion behavior of Pb-Mg-Al alloys were studied in 3.5% NaCl solution by measuring the weight loss in solution and simultaneously measuring electrochemical polarization curves.The results indicated that,with the increase of Ce content,the dispersion,uniform inter-metallic compounds Al4Ce formed by the rare earth element Ce and Al,the corrosion resistance of the alloy is further enhanced.

关 键 词：Pb-Mg-Al合金 Al4Ce 显微组织 耐蚀性 屏蔽材料 

分 类 号：TB331[一般工业技术—材料科学与工程]