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分支孔结构多孔阳极氧化铝膜的可控制备研究

发表时间:2018-03-30  浏览量:1025  下载量:266
全部作者: 李正祥,李屹
作者单位: 华南理工大学材料科学与工程学院
摘 要: 为获得具有分支孔结构的多孔阳极氧化铝(porous anodic alumina,PAA)膜,采用二次阳极氧化过程成功实现了分支孔结构PAA 膜的可控制备。一次阳极氧化过程(电压为120~200 V)可以在铝片表面形成PAA 膜,而去除该PAA 膜后可以在铝片表面形成具有特定大小的凹坑阵列。在此基础上通过恒流二次阳极氧化过程实现了分支孔结构PAA 膜的制备。研究结果表明,一次阳极氧化电压会对凹坑阵列的间距及有序度产生直接影响;二次阳极氧化电流密度及氧化时间等条件会对所制备分支孔结构PAA 膜的微观结构产生重要影响。本文所用方法操作简单、过程快速且可控性好,在复杂结构功能性纳米材料的模板法制备领域具有潜在应用价值。
关 键 词: 无机非金属材料;多孔;阳极氧化铝;阳极氧化;分支孔
Title: Controllable fabrication of porous anodic alumina films with branched pore structures
Author: LI Zhengxiang, LI Yi
Organization: School of Materials Science and Engineering, South China University of Technology
Abstract: In order to obtain porous anodic alumina (PAA) films with branched pore structures, a controllable two-step anodization method has been introduced, which made the controllable preparation of PAA films with branched pores be realized. After the first anodization process (voltage: 120-200 V), PAA films were fabricated on the surface of aluminum sheets. Consequently, dimple arrays with specific sizes were obtained by removing the PAA film. Based on these results, PAA films with branched pore structures have been fabricated by using a second constant current anodization process. Experimental results show that both the spacing interval and ordering of the dimple arrays can be directly influenced by the first anodization voltage. The microstructures of as-prepared PAA films with branched pore structures will depend much on the second anodization current density and processing time. The fabrication method used in the present work is simple, fast, and controllable, which has potential value in fields of template synthesis of complex functional nanomaterials.
Key words: inorganic nonmetallic materials; porous; anodic alumina; anodization; branched pore
发表期数: 2018年3月第6期
引用格式: 李正祥,李屹. 分支孔结构多孔阳极氧化铝膜的可控制备研究[J]. 中国科技论文在线精品论文,2018,11(6):544-549.
 
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