Self-organized porous titanium oxide prepared in Na2SO4/NaF electrolytes

被引：407

作者：

Macak, JM ^{[1
]}

Sirotna, K ^{[1
]}

Schmuki, P ^{[1
]}

机构：

[1] Univ Erlangen Nurnberg, Dept Mat Sci, Chair Surfac Sci & Corros, D-91058 Erlangen, Germany

来源：

ELECTROCHIMICA ACTA | 2005年 / 50卷 / 18期

关键词：

porous oxide layer; titanium oxide; anodic oxidation; electrochemical dissolution;

D O I：

10.1016/j.electacta.2005.01.014

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The anodic formation of nanoporous TiO2 on titanium was investigated in Na2SO4 electrolytes containing low concentrations of NaF (0.1-1 wt.%). It was found that under optimized electrolyte conditions and extended polarization, a self-organized nanostructure consisting of porous TiO2 is obtained. The porous structure is arranged in sections of arrays with single pore diameters of typically 100 nm and an average spacing of 150 nm. The pores are open at the top and covered by oxide at the bottom. Compared with earlier work, we show that using a neutral NaF electrolyte significantly thicker porous layers can be obtained than in acidic solutions. (c) 2005 Published by Elsevier Ltd.

引用

页码：3679 / 3684

页数：6

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