乙醇和磁搅拌对高压制备阳极氧化铝膜的影响  

Effects of Ethanol and Magnetic Stirring on the Preparation of Hard Anodic Alumina Film at High Voltage

作　　者：姜永军[1] 李波 JIANG Yong-jun;LI Bo(School of Mechanical Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China)

机构地区：[1]内蒙古科技大学机械工程学院

出　　处：《材料保护》2019年第4期26-29,84,共5页Materials Protection

基　　金：国家自然科学基金(51562031);内蒙古自然科学基金项目(2014MS0516)资助

摘　　要：硬质阳极氧化(HA)过程中添加乙醇和使用磁搅拌能够有效抑制烧穿现象的发生。将0.3mol/L草酸电解液的溶剂设置为体积比分别为1:1、2:1、3:1和4:1的去离子水与乙醇混合溶液,同时使用磁搅拌进行二次高压阳极氧化。通过分析电流时间曲线和原子力显微镜(AFM)表征的表面形貌,研究了乙醇添加量和磁搅拌对高压阳极氧化的影响。结果表明:溶剂中水与乙醇体积比的大小对制备出模板的孔径和孔间距几乎没有影响;氧化过程中及时改变磁搅拌速度可以有效抑制烧穿现象,使用变速磁搅拌也可制备出高有序度的阳极氧化铝模板。The breakdown phenomenon can be effectively restrained by adding ethanol and using magnetic stirring during hard anodizing oxidation (HA) process. A series of mixture solutions with ethanol and de-ionized water in the ratios of 1 : 1,2-1,3: 1 and 4 : 1 were used as the solvent to configure the 0.3 mol/L oxalic acid electrolytes, and the second anodizing process was performed in these electrolytes with magnetic stirring. The evolution of the current as a function of time and the surface observation of atomic force microscope (AFM ) were analyzed to study the effects of ethanol concentration and magnetic stirring on the high voltage anodization. Results showed that the value of volume ratio of deionized water and ethanol had little effect on the hole diameter and interpore distance. Furthermore, the breakdown phenomenon could be effectively inhibited by changing the magnetic stirring speed timely, and the highly ordered anodic aluminum oxide templates could also be prepared by using the magnetic stirring with variable speed.

关 键 词：高压阳极氧化 乙醇 磁搅拌 有序度 

分 类 号：TG174.45[金属学及工艺—金属表面处理]