Publisher : The Korean Institute of Surface Engineering
DOI : 10.5695/JKISE.2011.44.2.068
Title & Authors
A Study on Corrosion Resistance and Electrical Surface Conductivity of an Electrodeposited Ni-W Thin Film Park, Je-Sik; Jeong, Goo-Jin; Kim, Young-Jun; Kim, Ki-Jae; Lee, Churl-Kyoung;
A Ni-W thin-film was synthesized by electrodeposition, and its corrosion resistance and electrical surface conductivity were investigated. Amount of tungsten in the Ni-W thin-film increased linearly with current density during the electrodeposition, and crack-free and low-crystalline Ni-21 at.%W coating layer was obtained. Corrosion resistances of the Ni-W thin-films were examined with an anodic polarization method and a storage test in a strong sulfuric acid solution. As a result, the Ni-21 at.%W thin-film exhibited the greatest corrosion resistance, and maintained the electrical surface conductivity even after the severe corrosion test, which could be applicable as a surface treatment for advanced metallic bipolar plates in fuel cell or redox flow battery systems.