Photocathodic protection of 316L stainless steel by coating of anatase nanoparticles

Physicochemical Problems of Materials Protection

Abstract

Uniform nanostructure anatase films were coated on 316L stainless steel by the sol-gel dip coating method. Sols with different values of pH were applied. The corrosion protective behavior of coated samples was investigated by electrochemical measurements in 0.5 molar NaCl solutions on samples placed under UV illumination and dark condition using Tafel curves. It was found that in addition to acting as a physical barrier, anatase thin films are more protective under UV illumination due to photocathodic protection. Neutral sols give better protection due to formation of more uniform and less defective coatings.

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Copyright information

© Pleiades Publishing, Ltd. 2013

Authors and Affiliations

  1. 1.Department of Materials Science and EngineeringSharif University of TechnologyTehranIran
  2. 2.Department of Mechanical EngineeringUniversity of TorontoTorontoCanada

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