铝合金表面无铬化学转化膜的研究  

Study of Chrome-free Chemical Conversion Film on Aluminium Alloy

作　　者：陈东初[1] 黄柱周[2] 李文芳[1] 

机构地区：[1]华南理工大学机械工程学院材料研究所,广东广州516640 [2]佛山科技学院理学院,广东佛山528000

出　　处：《表面技术》2005年第6期38-39,共2页Surface Technology

摘　　要：采用钼酸盐、高锰酸盐作为成膜氧化剂,研究了铝合金化学转化膜的处理溶液,优化了溶液配方与工艺参数,在铝合金表面制备出有良好耐蚀性的转化膜。利用各种测试手段与分析方法,对转化膜的综合性能进行分析,对转化膜的微观形貌与元素组成进行表征。提出了钼酸盐化学转化膜成膜机理。In order to develop an environment-friendly method to form a chemical conversion film on aluminium surface without the toxic hexavalent chromium compounds, a process with sodium molybdate and potassium permanganate as the oxidants in the treating solution has been investigated. Solution components and preparing parameters have been optimized. Micro-structure and components of the conversion film have been studied by various micro-analysis methods, and the growth mechanism of the chemical conversion film has also been investigated.

关 键 词：铝合金 无铬 化学转化膜 

分 类 号：TG174.45[金属学及工艺—金属表面处理]