电泳-电沉积镍基纳米复合镀层Ni-Al_2O_3的耐蚀性能  

Corrosion Resistance of Ni-Al_2O_3 Nano-composite Coatings Prepared by Electrophoretic-electrochemical Deposition

作　　者：田海燕[1] 朱荻[1] 曲宁松[1] 朱增伟[1] 

机构地区：[1]南京航空航天大学机电学院,南京210016

出　　处：《腐蚀与防护》2011年第6期426-429,447,共5页Corrosion & Protection

基　　金：江苏省自然科学基金重点资助项目(BK2004005);教育部博士点基金资助项目(20050287020)

摘　　要：采用电泳-直流电沉积和电泳-脉冲电沉积工艺制备了具有较高Al2O3含量的Ni-Al2O3纳米复合镀层,分析了纳米粒子对复合镀层表面形貌及微观组织的影响,并以静态浸泡试验法研究了镀层在质量分数为10%的HCl溶液和10%的H2SO4溶液中的耐蚀性能。结果表明,相比于纯金属镀层,电泳-电沉积纳米复合镀层的晶粒细小、组织致密,其耐蚀性能也较纯金属镀层有所提高。Ni-Al2O3 nano composite coatings with high concentration of Al2O3 nano particles were prepared by electrophoretic/DC electrodeposition and electrophoretic/pulse electrodeposition. The effects of Al2O3 concentration on the surface morphology and microstructure of the nanc-composite coatings were analyzed. The corrosion resistance of the Ni-A120：~ nano composite coatings was studied in 10% HC1 and 10^ H2SO4 solutions respectively by static immersion method. The results showed that the nanc-composite coating had a smooth surface with compact and uniform microstructure, the corrosion resistance of the nano-composite coatings was better than that of pure Ni coating.

关 键 词：复合镀层 电泳沉积 电沉积 耐蚀性 

分 类 号：TG174.4[金属学及工艺—金属表面处理]