Abstract
Electrochemical behaviour of Ag coupled with Indium-Tin-Oxide (ITO) containing 10wt% SnO2 was studied in NaCl solutions at ambient temperature. ITO accelerates corrosion of Ag under illumination in 3 and 25% NaCl solutions.
Corrosion potential for Ag becomes relatively more noble in 0.3% NaCl solution than photopotential for ITO film with decreasing resistivity. Then ITO could become anodic to protect Ag from corrosion. More stable corrosion protection for Ag even in more concentrated NaCl solutions was confirmed to be obtained by additional coating of TiO2 on the ITO film.
