低电压下多孔阳极氧化铝膜的制备  

Preparation of Porous Anodic Aluminum Oxide Film Under Low Voltage

作　　者：周天国[1] 徐瑞[1] 张瑜[1] 陈田田[1] 张贺 

机构地区：[1]沈阳大学机械工程学院

出　　处：《热加工工艺》2018年第2期188-190,194,共4页Hot Working Technology

基　　金：国家自然科学基金资助项目(51174139)

摘　　要：选取草酸溶液电解液,采用低压恒压法与二次阳极氧化工艺制备了多孔阳极氧化铝膜（AAO）。借助扫描电镜（SEM）,观察了电解液浓度和氧化时间对多孔阳极氧化铝膜的形貌、孔径和孔间距的影响,得到电流随时间的变化曲线。研究了多孔阳极氧化铝膜层厚度与电流密度及氧化时间之间的关系,探讨了多孔阳极氧化铝膜形成机理,优化了阳极氧化制备工艺。结果表明：利用低压恒压法,在氧化电压18 V,氧化时间12 h,氧化液浓度0.6 mol/L时,可制备孔径均匀、高度有序的多孔阳极氧化铝膜。Taking oxalic acid electrolyte, porous anodic aluminum oxide（AAO） films were prepared by low-voltage constant voltage and two-step anodization process. By scanning electron microscope, the effecs of electrolyte concentration and oxidation time on the morphology, pore size and hole spacing of porous anodic aluminum oxidation films were studied.The electric current changing with time curve was obtained. The relationship among the thickness of AAO, electric current density and oxidation time was investigated. The forming mechanism of AAO film was discussed as well as the AAO process was optimized. The results show that the AAO film with uniform and high ordered pore size can be manufactured by low-voltage constant voltage process under the oxidation voltage of 18 V, oxidation time of 12 h, and the concentration of oxidation liquid of 0.6 mol/L.

关 键 词：低压恒压 高度有序 阳极氧化铝 

分 类 号：TG174[金属学及工艺—金属表面处理] TQ153.6[金属学及工艺—金属学]