碳纳米管/铅锡复合镀层的腐蚀特征  

Corrosion Resistance of Carbon Nanotube/Pb-Sn Alloy Composite Coating

作　　者：胡正西[1] 揭晓华[1] 卢国辉[1] 

机构地区：[1]广东工业大学材料与能源学院,广州510006

出　　处：《腐蚀与防护》2010年第10期745-748,共4页Corrosion & Protection

基　　金：国家自然科学基金项目(50775041);广东省自然科学基金项目(05001804);广东省科技计划项目(2008B010400029)

摘　　要：用复合电沉积方法在黄铜片上制备了碳纳米管/铅锡合金新型减摩复合镀层,对铅锡镀层和碳纳米管/铅锡复合镀层在3.0%(质量分数,下同)HCl、10%NaOH和3.5%NaCl溶液中的极化曲线和电化学阻抗进行了研究。结果表明,碳纳米管/铅锡复合镀层在以上三种介质中的腐蚀电位均有提高,其中,在3.5%NaCl溶液中提高明显,从-0.592 V(SCE)上升到-0.535 V(SCE);复合镀层有更高的电化学阻抗。碳纳米管的添加能提高铅锡镀层的耐蚀性能。A carbon nanotube/Pb-Sn alloy new anti-friction composite coating was prepared on a brass sheet by electro-deposition technology.The polarization curves and electrochemical impedance spectroscopy of the Pb-Sn coating and carbon nanotube/Pb-Sn composite coating were tested in 3.0% HCl,10% NaOH and 3.5% NaCl solutions.The results showed that the corrosion potential of the carbon nanotube/Pb-Sn composite coating increased in the three kinds of corrosion media,especially in 3.5% NaCl solution,it increased from-0.592 V（SCE） to-0.535 V（SCE）.In addition,the composite coating had higher electrochemical impedance.Carbon nanotubes can improve the corrosion resistance of Pb-Sn plating coatings.

关 键 词：复合镀层 碳纳米管 抗蚀性能 电化学阻抗谱 

分 类 号：TG174.44[金属学及工艺—金属表面处理]