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,2014,43(6):79-83.
GUAN Yu-qin,WU Wei-she,DU Jun,FAN Ting,MU Song-lin,LI Wen-fang.Study on Preparation and Properties of Ce-Mn/ Mo Composite Conversion Coating on 6063 Aluminum Alloy[J].Surface Technology,2014,43(6):79-83
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
投稿时间:2014-06-28  修订日期:2014-12-10
DOI:
中文关键词:  铝合金  Ce-Mn/ Mo 复合转化膜  耐蚀性  耐候性
英文关键词:aluminum alloy  Ce-Mn / Mo composite conversion coating  corrosioen resistance  weatherability
基金项目:粤港关键领域重点突破(佛山专项)专项基金(2008Z012);广东省重大科技专项(产业共性技术)基金(2009A08025002)
作者单位
关玉芹 华南理工大学 材料科学与工程学院, 广州 510640 
武卫社 华昌铝厂有限公司, 广东 佛山 528231 
杜军 华南理工大学 材料科学与工程学院, 广州 510640 
凡婷 华南理工大学 材料科学与工程学院, 广州 510640 
穆松林 华南理工大学 材料科学与工程学院, 广州 510640 
李文芳 华南理工大学 材料科学与工程学院, 广州 510640 
AuthorInstitution
GUAN Yu-qin School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China 
WU Wei-she Huachang Aluminum Factory Co. Ltd, Foshan 528231, China 
DU Jun School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China 
FAN Ting School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China 
MU Song-lin School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China 
LI Wen-fang School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China 
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中文摘要:
      目的 进一步改善 6063 铝合金表面 Ce-Mn 转化膜的综合性能。 方法 采用以 Ce(NO3 )3 和KMnO4 为主盐的转化液,在 6063 铝合金表面制备出 Ce-Mn 转化膜,再利用钼酸钠溶液进行后处理,优化处理工艺,获得 Ce-Mn/ Mo 复合转化膜。 对后处理前后的转化膜形貌、成分及电化学性能进行对比,并通过空气中放置、磨损测试的方法对比它们的耐候性和耐磨性。 结果 较优的成膜工艺为:18 g/ L Na2MoO4,1. 5 g/ L 十二烷基苯磺酸钠,成膜时间 18 min,成膜温度 45 ℃ 。 经后处理后,膜层颜色由金黄色转变为棕黑色,组织致密,主要由 Ce,Mn,Mo,O 和 Al 等元素组成,厚度提高至约 7 μm,腐蚀电流密度降低了约 85% 。 结论 与 Ce-Mn 膜层相比,Ce-Mn/ Mo 复合转化膜具有更优异的耐蚀性、耐候性和耐磨性。
英文摘要:
      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 significantly increased to about 7 μm. The corrosion current density was reduced by about 85% . Conclusion Compared with the CeMn coating, the Ce-Mn / Mo composite coating exhibited excellent corrosion resistance, weatherability and wear resistance.
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