A Study of the Environment–friendly Chrome-free Chemical Conversion Coating on 2024 Aluminium Alloy

摘要：

In order to develop an environment-friendly method of forming a chemical conversion coating on 2024 aluminium alloy surface without the toxic hexavalent chromium compounds, in this paper a process with sodium molybdate and potassium permanganate as the main compositions of the treating bath has been investigated. Solution composition and process parameters have been optimized. The chemical conversion coating has good corrosion resistance, evaluated with dropping test. Micro-structure and components of the conversion coating have been studied by various micro-analysis methods, and the growth mechanism of the chemical conversion coating has also been investigated.

关键词： Aluminium alloy chrome-free conversion coating

作者: Dongchu CHEN Wenhui GONG Zhuzhou HUANG Wenfang LI

作者单位: School of Science, Foshan University, Foshan 528000, China Collegue of mechanical engineering, South China University of Technology, Guangzhou 510640, China

会议类型: 国际会议

会议名称: The Fifth International Conference on Physical and Numerical Simulation of Materials Processing(第五届材料与热加工物理模拟及数值模拟国际会议)

会议地点: 郑州

会议语种:英文

在线出版日期: 2007-10-23（万方平台首次上网日期，不代表论文的发表时间）