Zn-ZrO_2复合镀工艺的研究  

Study on Zn-ZrO_2 Composite Coating Process

作　　者：谢绍俊[1,2] 何湘柱[1] 傅维勤[1] 舒绪刚[1] 雷华山[1] 

机构地区：[1]广东工业大学轻工化工学院,广东广州510006 [2]惠州建邦精密塑胶有限公司,广东惠州516006

出　　处：《江西师范大学学报（自然科学版）》2009年第4期423-428,共6页Journal of Jiangxi Normal University(Natural Science Edition)

基　　金：国家自然科学基金(50004003);广东省重大攻关项目(2004A10701005);广东省自然科学基金(04205301)项目资助

摘　　要：研究了氯化铵体系中Zn-ZrO2复合电镀的工艺,探讨了工艺条件对复合镀层ZrO2含量及电流效率的影响.得到了Zn-ZrO2复合电镀的最佳工艺,并对Zn-ZrO2复合镀层的耐蚀性进行了考察.结果表明,当粉体浓度为14 g/L,电流密度为10 A/dm2,pH值为4,搅拌强度为25 r/min时,复合镀层中ZrO2微粒复合质量分数为4.25%.Zn-ZrO2复合镀层抗盐雾时间为183 h,耐蚀性明显优于六价铬Zn镀层.Zn-ZrO2 deposits from ammonia-chloride electrolyte have been examined. The ettect oi plating process parameters on ZrO2 content and current efficiency of the Zn-ZrO2 deposits was studied in detail. Optimal technology for Zn-ZrO2 composite deposition has been obtained. The corrosion resistance of the Zn-ZrO2 coating was evaluated. The result showed that when the concentration of powder 14 g/L,current density 10 A/dm^2, pH value 4,mixing speed 25r/min, the composite coating contains ZrO2 4.25%. The Zn-ZrO2 composite coating can pass 183 h NSS test, its corrosion resistance surpasses pure zinc coating with hexavalent chromium passivate film.

关 键 词：电镀Zn—ZrO2 复合镀层 耐蚀性 

分 类 号：TQ153[化学工程—电化学工业]