氧化铝微米树的制备及其形成机理研究  

Study on Preparation of Alumina Micron-trees and the Formation Mechanisms

作　　者：赵世华[1] 麻焕锋[1] 贾廷见[1] 崔玉亭[1] 朱治广[1] 赵青[1] 蔡娜[1] 王玲玲[2] 

机构地区：[1]商丘师范学院物理与信息工程系,商丘476000 [2]湖南大学物理与微电子科学学院,长沙410082

出　　处：《材料导报》2011年第10期139-141,共3页Materials Reports

基　　金：国家自然科学基金项目(11074160);河南省教育厅自然科学研究计划项目(2011A140020);商丘师范学院大学生创新性实验计划项目(2010-DXS-20)

摘　　要：以草酸为电解液,采用两次阳极氧化法,结合高温退火和酒精中超声,制备了氧化铝的微米树结构。该微米树由明显的树干和树枝组成。树干的平均宽度在1μm左右,平均长度为20～30μm,而树枝的平均宽度为1～2μm,平均长度为3～5μm。微米树树干的形成并非沿单一方向生长,而呈明显的"X"交叉型生长模式。最后讨论了氧化铝微米树的形成机理。Through the two-step anodic oxidation in oxalic acid solution and combined with the process of hightemperature annealing and the ultrasound in anhydrous ethanol, the alumina micron-trees were prepared, which involve the obvious boles and branches. The average width and length of the boles are about 1μm and 20-30μm, respectively. The average width and length of the branches are 1-2μm and 3-5μm, respectively. Moreover, the results show that the formation of micron tree boles is not along a single direction of growth, but along different directions at the same time, which exhibits a clear ＂X＂ crossover-type growth direction. The formation mechanisms of alumina micron-trees were proposed.

关 键 词：阳极氧化 微米树 形成机理 

分 类 号：TB34[一般工业技术—材料科学与工程] O482.31[理学—固体物理]