表面技术Issue(6)：79-83,5.
6063铝合金表面Ce-Mn/Mo复合转化膜的制备及性能
Study on Preparation and Properties of Ce-Mn/Mo Composite Conversion Coating on 6063 Aluminum Alloy
摘要
Abstract
ABSTRACT:Objective To improve the comprehensive properties of the Ce-Mn conversion coating deposited on 6063 aluminum alloy. Methods The Ce-Mn conversion coating was firstly prepared in the solution mainly containing cerium nitrate and potassium permanganate. After that, the Ce-Mn coating was post-treated in the molybdate solution, the treatment processes were optimized, a novel Ce-Mn/Mo composite conversion coating was formed and its microstructure and properties were characterized. Results The optimal film formation process parameters were as following:Na2MoO4 18 g/L, sodium dodecyl benzene sulfonate(SDBS)1. 5 g/L, conversion time 18 min, deposition temperature 45 ℃. After post-treatment, the color of the Ce-Mn coating changed from golden yellow to brownish-black. The test result showed that the Ce-Mn/Mo composite coating was uniform and dense tissue. This coating was mainly composed of Ce, Mn, Mo, O and Al elements, and the thickness of Ce-Mn/Mo composite conversion coating was sig-nificantly increased to about 7 μm. The corrosion current density was reduced by about 85%. Conclusion Compared with the Ce-Mn coating, the Ce-Mn/Mo composite coating exhibited excellent corrosion resistance, weatherability and wear resistance.关键词
铝合金/Ce-Mn/Mo复合转化膜/耐蚀性/耐候性Key words
aluminum alloy/Ce-Mn/Mo composite conversion coating/corrosioen resistance/weatherability分类
矿业与冶金引用本文复制引用
关玉芹,武卫社,杜军,凡婷,穆松林,李文芳..6063铝合金表面Ce-Mn/Mo复合转化膜的制备及性能[J].表面技术,2014,(6):79-83,5.基金项目
粤港关键领域重点突破(佛山专项)专项基金(2008Z012) （佛山专项）
广东省重大科技专项(产业共性技术)基金(2009A08025002)Fund：Supported by Major Breakthroughs in Key Areas of Guangdong (Foshan Special) Special Fund(2008Z012), and Guangdong Major Science and Tech-nology Projects (Industrial Generic Technology) Fund(2009A08025002) （产业共性技术）
