多孔氧化铝膜氧化过程中的膨胀因子  

Volume Expansion Factor during Formation Process of Porous Aluminum Oxide Membranes

作　　者：姜海波[1] 顾锋[1] 李春忠[1] 

机构地区：[1]华东理工大学材料科学与工程学院,超细材料制备与应用教育部重点实验室,上海200237

出　　处：《华东理工大学学报（自然科学版）》2008年第4期515-519,共5页Journal of East China University of Science and Technology

基　　金：国家863计划(2006AA03Z358);国家自然科学基金重点项目(20236020);上海市重点实验室专项(05DZ22302;06DZ22008);上海市纳米科技专项(0552nm001;0652nm034)等资助

摘　　要：以草酸溶液为电解质．采用两步电化学阳极氧化法制备了氧化铝有序多孔膜，研究了草酸浓度、阳极氧化电压以及草酸溶液温度对膨胀因子的影响。研究结果表明：铝的反应速率随电流密度的增大线性增加，电流效率为92％；随着工艺条件的改变，膨胀因子在1．270～1．425之间变化；在温度一定的情况下．膨胀因子与氧化电压呈线性关系，其倒数与电流密度的对数成正比；随着温度升高，电流密度增加．膨胀因子降低。Based on the preparation of porous aluminum oxide （AAO） membranes via a two-step elec trochemical anodizing approach in oxalic acid solution, the dependences of the volume expansion factor on electrolyte concentration, applied voltage and temperature were investigated. Al reaction rate linearly increased with the increasing of the current density, and the current efficiency is about 92%. The volume expansion factor varied from 1.27 to 1. 425 under various anodizing conditions. Linear dependences were obtained for the volume expansion factor versus applied voltage and reciprocal of the volume expansion factor versus current density logarithm at a given temperature. The volume expansion factor decreased with the increasing of the electrolyte temperature.

关 键 词：多孔氧化铝膜 膨胀因子 草酸浓度 氧化电压 温度 

分 类 号：TN304[电子电信—物理电子学]