| AA6063铝合金着色Zr无铬转化膜及其电化学性能 |
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| 引用本文： | 陈廷益,路文,李文芳,付业琦. AA6063铝合金着色Zr无铬转化膜及其电化学性能[J]. 材料工程, 2015, 0(12): 52-57. DOI: 10.11868/j.issn.1001-4381.2015.12.009 |
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| 作者姓名： | 陈廷益 路文 李文芳 付业琦 |
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| 作者单位： | 1. 贵州师范大学 材料与建筑工程学院 无机非金属功能材料重点实验室，贵阳 550001; 华南理工大学材料科学与工程学院，广州 510640;2. 贵州师范大学 材料与建筑工程学院 无机非金属功能材料重点实验室,贵阳,550001;3. 华南理工大学材料科学与工程学院,广州,510640 |
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| 基金项目： | 贵州省科学技术基金资助项目，贵州省国际科技合作计划资助项目，贵阳市白云区科技计划项目资助，贵州省科技计划项目资助 |
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| 摘 要： | 以锆盐为主要原料,实现常温下对AA6063铝合金的无铬化学转化处理。采用SEM,XRD及电化学测试研究了转化膜的性能。结果表明:锆膜生长是以针状小单元结构组织成圆形较大的单元,再发展为均匀的黑灰色转化膜;锆膜厚约8.79μm,主要由KZrF_3(OH)_2·H_2O及KZrF_3O·2H_2O组成;锆膜耐腐蚀性能比铝合金提高了数百倍,与铬酸盐转化膜相当;锆膜的耐腐蚀性能与后处理工艺有一定关系,膜层结构等效电路为R_1+C_2/R_2+M_3。
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| 关 键 词： | AA6063 铝合金 着色 锆转化膜 无铬化学转化 |
Synthesis of Chrome-free Coloring Conversion Coating on AA6063 Aluminium Alloy and Its Electrochemical Properties |
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| Abstract: | The zirconium salt as main raw materials,chrome-free chemical conversion treatment was carried out on AA6063 aluminium alloy at room temperature.Through the analysis of SEM,XRD and electrochemical test,the properties of the chrome-free conversion coating were studied.The results show that zirconium coating grows from needle like small cell structure to large round cell,and then develops to uniform black and grey conversion coating;the thickness of zirconium coating is about 8.79μm,which is mainly composed of KZrF3 (OH)2 ·H2 O and KZrF3 O·2H2 O;the corrosion resist-ance of the zirconium coating is improved by hundreds times than aluminium alloy,and is equivalent to chrome conversion coating;the corrosion resistance of zirconium coating has a certain relationship with post treatment process,the coating structure equivalent circuit is R 1 +C 2/R 2 +M3 . |
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| Keywords: | AA6063 aluminium alloy coloring zirconium conversion coating chrome-free conversion electrochemical detection |
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