摘要
介绍了一种以三种有机添加剂为络合剂的三价铬电镀工艺,并对镀液和镀层进行了一系列性能测试.结果表明,该体系稳定,pH值容易控制;具有较宽的光亮范围(从2.5 A/dm2至25 A/dm2以上);而且覆盖能力佳,分散能力较传统的六价铬镀液要好;得到的镀层色泽明亮,接近于六价铬镀层;且镀层结晶细致;镀层厚度可超过4μm,符合装饰性镀层的厚度要求;镀层与镍的结合力良好;耐蚀性与六价铬镀层相当;可以作为取代六价铬装饰性镀层使用.
In this paper,a new bath for trivalent chromium plating is introduced.The bath applies three kinds of organic additives as the complexes.Some performance tests about the solution and deposit are done.The results shows that the bath is economical and stable;the pH value of it is easy to be controlled.The deposit can be gained in a wide range of current density（from 2.5 A/dm2 to above 25 A/dm2）.The covering power of the bath is excellent.The throwing power of it is better than the hexavalent chromium plating bath.The plating is very bright and nearly to the plating from the hexavalent chromium bath.The crystal of deposit is very fine.The thickness of the chromium plating can beyond 4 μm,and it is fit for the decorative plating.The adhesion between the trivalent chromium deposit and nickel deposit is great.The corrosion resistance of the trivalent chromium plating is comparative to the hexavalent chromium plating.So it can replace the hexavalent chromium plating for decoration.
出处
《哈尔滨商业大学学报（自然科学版）》
CAS
2010年第2期214-217,共4页
Journal of Harbin University of Commerce：Natural Sciences Edition
基金
2008年省教育厅科学技术研究项目(11531442)
关键词
三价铬
装饰
六价铬
镀层
trivalent chromium
decoration
hexavalent chromium
plating
