ZFS共沉积促进剂在复合电沉积过程中的作用机理  

Action mechanism of cation-additive ZFS during composite electrodeposition

作　　者：范云鹰[1] 张英杰[1,2] 杨显万[1] 董鹏[1] 闫磊[1] 

机构地区：[1]昆明理工大学材料与冶金工程学院,昆明650093 [2]曲靖师范学院化学与生命科学系,曲靖650011

出　　处：《中国有色金属学报》2008年第E01期331-335,共5页The Chinese Journal of Nonferrous Metals

基　　金：教育部博士点基金资助项目（20050674007）;云南省自然科学基金资助项（2006B0048M）

摘　　要：将阳离子型ZFS促进剂与SiO2微粒加入Zn-Fe合金镀液中，制备了Zn-Fe-SiO2复合镀层，研究了ZFS共沉积促进剂对镀层中SiO2微粒沉积量的影响，并分析了促进剂的作用机理。结果表明：ZFS共沉积促进剂可以明显提高SiO2微粒在镀层中的沉积量，并且无需对SiO2微粒进行镀前特殊处理。其原因是该促进剂吸附在SiO2微粒表面，使微粒表面呈正电性，在电场引力的作用下，SiO2微粒容易吸附在阴极表面并与还原金属实现复合共沉积。Cation-additive ZFS and SiO2 particles were added into Zn-Fe alloy electrolyte, and Zn-Fe-SiO2 composite coatings were obtained. Effect of additive ZFS on SiO2 content in the coating was studied, and the action mechanism of additive ZFS during composite electrodepositing was analyzed. The results show that additive ZFS can markedly improve the SiO2 content in the composite coating with no pre-treatment on SiO2 particles because SiO2 particles attached with additive ZFS show positive charge and the electric field gravitation between SiO2 particles and cathode makes SiO2 particles absorb onto the cathode and deposit with reductive metal easily.

关 键 词：复合电沉积 ZFS促进剂 机理 吸附 

分 类 号：TG178[金属学及工艺—金属表面处理]