Fabrication of Cr-Cr23C6/Cr2N Composite Coatings: Change in the Phase Structure and Effect on the Corrosion Properties

SANCAKOĞLU O., Ungan G., ÇELİK E., Aksoy T.

International Journal of Applied Ceramic Technology, vol.12, no.4, pp.830-836, 2015 (SCI-Expanded) identifier


© 2014 The American Ceramic Society.Cr-C composite coatings were electro-codeposited in sulfuric acid-based solutions containing submicrometer-sized carbon black particles. The effect of heat-treatment conditions on the carbide phase formation in the composite coatings and their corrosion behaviors were investigated. The obtained results showed that the Cr-C composite coatings can be fabricated successfully and with an additional heat treatment, it is possible to obtain a Cr-Cr23C6/Cr2N composite structure. Therefore, the increase in corrosion potential suggests improvement in corrosion resistance due to the formation of Cr23C6/Cr2N. This implies that Cr-Cr23C6 and/or Cr2N composite coatings have potential application to industrial fields in many respects.