Formation of self-ordered nano-tubular structure of anodic oxide layer on titanium

被引：230

作者：

Raja, KS ^{[1
]}

Misra, M ^{[1
]}

Paramguru, K ^{[1
]}

机构：

[1] Univ Nevada, Reno, NV 89557 USA

来源：

ELECTROCHIMICA ACTA | 2005年 / 51卷 / 01期

关键词：

anodization; titanium oxide; nano-porous oxide;

D O I：

10.1016/j.electacta.2005.04.011

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Room temperature anodization of titanium foil specimens was carried out in 0.5 M phosphoric acid solution with addition of various halide ions. Addition of 0.138 M HF or NaF resulted in self-ordered nano-tubular oxide structure. Addition of bromide and chloride ions initiated only pitting and nano-pores were not observed during anodization. Acidified fluoride solution is found to be necessary to obtain ordered nano-structure as neutral fluoride solution did not form nano-pores. Instability of the oxide layer during anodization and formation of the self-ordered structure can be explained by the perturbation theory. Separation of individual nano-tubes of titanium oxide layer from the inter-connected nano-pores could be attributed to the possible repulsion forces of the cation vacancies. (C) 2005 Elsevier Ltd. All rights reserved.

引用

页码：154 / 165

页数：12

共 33 条

[1]

[Anonymous], OXIDES OXIDE FILMS

[2] Visible-light photocatalysis in nitrogen-doped titanium oxides [J].