Photoelectrochemical Anticorrosion Effect of SrTiO[sub 3] for Carbon Steel

Abstract
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 coating (ca. 1.5 μm thick) was vs. Ag/AgCl in an aerated 3 wt % aqueous NaCl (pH 5) under illumination with UV light. This potential was more negative than the corrosion potential of the bare steel 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 -coated ITO under UV illumination. © 2001 The Electrochemical Society. All rights reserved.