表面技术2011，Vol.40Issue(3)：94-97,4.
硫酸盐三价铬电镀中铵盐的作用及影响
Effect of Ammonium Salt on Sulfate Trivalent Chromium Plating Process
摘要
Abstract
Role of ammonium sulfate in trivalent chromium plating system was studied . By the bright range of Hull—cell tests, deposition rate, polarization curves, cyclic voltammetry, effects of ammonium salt on trivalent chromium reduction characteristics were researched. And the anticorrosion of chrome coatings obtained from baths containing different contant anmonium salts were compared by Tafel curves, electrochemical impedance spectroscopy (EIS) and copper accelerated salt spray (CASS) tests. The results show that ammonium ion in the bath not only plays the role of conductivity but also plays the role of coordination. Polarizability in bath with ammonium is greater and the deposition rate is slower than that without. Anticorrosion of coatings from bath with ammonium is higher.关键词
三价铬/电镀/硫酸盐体系/铵盐Key words
trivalent chromium/ electroplating/ sulfate bath/ ammonium salt分类
化学化工引用本文复制引用
胡会利,昝振峰,屠振密,张靖..硫酸盐三价铬电镀中铵盐的作用及影响[J].表面技术,2011,40(3):94-97,4.基金项目
中央高校基本科研业务费专项资金(HIT.NSRIF.2009154) （HIT.NSRIF.2009154）
