铝表面高压阳极氧化膜层结构分析  

INVESTIGATION ON THE COMPONENTS,APPEARANCE AND STRUCTURE OF HIGH VOLTAGE ANODIZATION FILM ON ALUMINUM

作　　者：侯朝辉[1] 刘建平[1] 许岩[1] 旷亚非[1] 

机构地区：[1]湖南大学化学化工学院,长沙410082

出　　处：《中国腐蚀与防护学报》2001年第3期177-181,共5页Journal of Chinese Society For Corrosion and Protection

基　　金：机械工业发展基金 ( 97FA0 5 0 4 );湖南省自然科学基金 (OOJJY 2 0 86)资助项目

摘　　要：采用X射线衍射 (XRD)、扫描电镜 (SEM )和X射线光电子能谱 (XPS)综合分析了铝在磷酸和钨酸钠体系中形成的高压阳极氧化膜的成分、形貌和结构。XPS结果表明 ,氧化膜的主要组成元素为O和Al,同时夹杂有少量的P和W。SEM分析发现 ,氧化膜呈网状结构 ,孔隙率约为 10个/ μm2 ,孔径大小为 0 .15～ 0 .2 0 μm。氧化膜大致可以分为紧密层和疏松层两层。紧密层、疏松层、基体三者之间相互交错 ,紧密相连。SEM显示 ,紧密层和疏松层中均存在大量的龟裂纹。XRD分析表明 ,氧化膜呈现非晶态结构 ,以铝的氧化物为主要组成成份 。Components,appearance and structure of high voltage anodization film,which anodized in mixed electrolyte of H 3PO 4 and Na 2WO 4,were analyzed by XPS,SEM and XRD methods.XPS results showed that the main components of the film were O,Al,P and W.SEM test indicated that the microstructure of the film was like a web.The porosity was 10 per μm 2,pore size was 0 15～0.20 μm.The film connected with the substrate in a jagged interlocking pattern and could be divided into two layers,the porous layer above and the compact layer below.Many cracks were observed in both layers under higher magnification SEM study.XRD analysis found that it was a non crystal structure.Aluminum oxides,mixed up with some phosphates and tungstates,were the main phases in the film.

关 键 词：铝 高压阳极氧化 膜层结构 阳极氧化膜 

分 类 号：TG174.451[金属学及工艺—金属表面处理]