电沉积制备Ni-W-Al_2O_3纳米复合镀层的初步研究  

Elementary research on the preparation of Ni-W-nano Al_2O_3 composite coatings by electrodeposition

作　　者：王利[1] 吴玉程[1] 舒霞[1] 李云[1] 王文芳[1] 黄新民[1] 

机构地区：[1]合肥工业大学材料科学与工程学院,安徽合肥230009

出　　处：《电镀与涂饰》2007年第2期16-18,共3页Electroplating & Finishing

基　　金：安徽省重点科研项目(05022047);国家自然科学基金项目(20571022)。

摘　　要：初步研究了电沉积Ni-W-Al2O3纳米复合镀层的制备工艺。考察了纳米粒子的分散方式、纳米粒子在镀液中的浓度以及镀液温度对沉积速度、复合量及镀层形貌的影响。结果表明：纳米粒子加入镀液前超声分散1h、施镀时对镀液采用超声搅拌效果最佳；纳米粒子在镀液中的含量为15g／L时沉积速率最大，为2．88g／（dm^2·h）；镀液温度为75-80℃时沉积速率较大且较稳定，且当施镀温度为75℃时镀层表面均匀有光泽，呈银白色。The preparation process of Ni-W-nano Al2O3 composite coatings by electrodeposition is studied elementarily. The effects of the dispersion method of nano-particles, the concentration of nano particles in the bath and bath temperature on deposition rate, the content of nano-particles in the coating and the morphology of the coating were investigated. The results show that the effect is the best when ultrasonic dispersing the nano-particles for 1 h before adding them into the bath and by ultrasonic agitation in the plating process; the deposition rate reaches the greatest value of 2.88 g/（dm^2·h） as the content of nano-particles in the bath is 15 g/L; the deposition rate is quite fast and stable as the bath temperature is between 75 - 80 ℃, and the composite coating is uniform in luster and silver white when the bath temperature is 75 ℃.

关 键 词：电沉积 纳米复合镀层 Ni-W-Al2O3 复合量 超声搅拌 沉积速率 

分 类 号：TQ153.2[化学工程—电化学工业]