【作者】 梁奕清； 陈东初；

【Author】 Yiqing LIANG1,Dongchu CHEN2,3 1R&D Center,Guangdong Xingfa Aluminium,Foshan,China,528061 2School of Science,Foshan University,Foshan,China,528000 3School of Material Engineering,South China University of Technology,Guangzhou,China,516041

【机构】 广东兴发铝业有限公司广东省重点铝型材工程技术研究开发中心； 佛山科学技术学院理学院； 华南理工大学材料学院；

【摘要】 为了设计铝型材无铬钝化处理液的基础配方,本文对CeCl3、Ce(NO3)3、Ce(SO4)2等稀土主盐及KMnO4、H2O2、(NH4)2S2O8等氧化剂对铝合金钝化效果的影响进行了研究,采用溶液成膜效率、钝化膜外观等评价指标以及金相显微镜对不同溶液配方的钝化能力进行了对比评价,研究发现采用氧化剂可以促进铝合金钝化成膜,Ce(NO3)3稀土盐与KMnO4氧化剂配合具有最佳的成膜效果与外观。更多还原

【Abstract】 In order to design an environmental friendly chrome-free solution formula for the passivation treatment on the surface of aluminium profile,the effect of different rare earth compounds of CeCl3,Ce(NO3)3,Ce(SO4)2 and oxidants of KMnO4,H2O2,(NH4)2S2O8 in the treating bath upon the coating formation was studied in this paper,and the coating growth efficiency,coating appearance and the surface morphology were used as the main evaluating indicators to optimize the solution formula.It was found that the oxidant is helpful to the coating growth on the aluminium alloy and a good passivation coating could be formed in the solution composed of Ce(NO3)3 and KMnO4.更多还原