Photoelectrochemical anticorrosion effect of SrTiO3 for carbon steel

被引：40

作者：

Ohko, Y ^{[1
]}

Saitoh, S

Tatsuma, T

Fujishima, A

机构：

[1] Univ Tokyo, Sch Engn, Dept Appl Chem, Tokyo 1138656, Japan

[2] Univ Tokyo, Inst Ind Sci, Tokyo 1538505, Japan

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2002年 / 5卷 / 02期

关键词：

D O I：

10.1149/1.1432242

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

SrTiO3 films were prepared on an indium-tin oxide (ITO)-coated glass plate by a spray-pyrolysis technique, and their photoelectrochemical anticorrosion effects for carbon steel substrates were examined. The photopotential of a SrTiO3 coating (ca. 1.5 mum thick) was -770 mV vs. Ag/AgCl in an aerated 3 wt % aqueous NaCl (pH 5) under illumination with 10 mW cm(-2) UV light. This potential was more negative than the corrosion potential of the bare steel (-500 mV). Corrosion of the carbon steel was substantially suppressed at pH 4 or higher pH in 3 wt % aqueous NaCl when it was connected to a SrTiO3-coated ITO under UV illumination. (C) 2001 The Electrochemical Society.

引用

页码：B9 / B12

页数：4

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