纳米ZrO2/Cr复合电沉积的工艺条件
The Electroplating Process of Nano-ZrO2/Cr Composite Coatings
摘 要
将纳米浆料ZrO2加入基础铬镀液中进行电沉积,获得了纳米ZrO2/Cr复合镀层.对比研究单组分镀铬和复合镀工艺条件,结果表明:随着电流密度增大,两种电镀电流效率都是先增加,达到最大值后下降；电镀时间延长,相应镀层厚度增大,但超过20 min后,镀层外观粗糙.确定了适宜的电镀工艺范围:时间15~20 min,电流密度15~17.5 A/dm2,搅拌强度300 r/min,温度为25~30 ℃.SEM和能谱分析表明,复合镀层中纳米微粒分布均匀,锆元素的平均含量为1.45%(质量分数).
电沉积
ZrO2
镀铬
nanometer composite
electrodeposition
ZrO2
chromium
Abstract
A nano-ZrO2/Cr codeposition process was developed.The effects of bath composition and technical parameters on coating performance were studied.The appearance and components of nano-ZrO2/Cr coating were analysed by means of SEM and EDX.The optimal process parameters were achieved under the conditions of temperature 30 ℃,current density 15~17.5 A/dm2,plating time 20 min.The average content of ZrO2 in the coating was 1.45%,and the appearance of coating with nano particles was fine and uniform.
中图分类号 TQ153.2 TB333
所属栏目 应用技术
基金项目 国家自然科学基金(编号:50004003)；广东省科委重大工业攻关项目(编号:045040037)
收稿日期 2008/10/7
修改稿日期 2008/10/24
网络出版日期
作者单位点击查看
联系人作者舒绪刚(xgshu@21cn.com)
备注舒绪刚,博士研究生.
引用该论文: SHU Xu-gang,HUANG Hui-min,HE Xiang-zhu,FU Wei-qin,ZHAO Guo-peng. The Electroplating Process of Nano-ZrO2/Cr Composite Coatings[J]. Corrosion & Protection, 2009, 30(11): 813～815
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参考文献
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【3】Watson A,Andson A M H,EI-Sharif M R,et al.The role of chromiumⅡcatalyzed olation reactions in the sustained deposition of chromium and its alloys from environmentally acceptable chromium(Ⅲ) electrolytes[J].Trans IMF,1991,69(1):26-32.
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【2】何湘柱,龚竹青,蒋汉瀛.三价铬水溶液电镀非晶态Cr工艺[J].中国有色金属学报,1999,9(3):646-650.
【3】Watson A,Andson A M H,EI-Sharif M R,et al.The role of chromiumⅡcatalyzed olation reactions in the sustained deposition of chromium and its alloys from environmentally acceptable chromium(Ⅲ) electrolytes[J].Trans IMF,1991,69(1):26-32.
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