한국표면공학회지 (44권2호 68-73)
A Study on Corrosion Resistance and Electrical Surface Conductivity of an Electrodeposited Ni-W Thin Film
전해도금에 의한 Ni-W 합금의 내식성 및 표면 전도도 특성 연구
박제식;정구진;김영준;김기재;이철경;
Park, Je-Sik;Jeong, Goo-Jin;Kim, Young-Jun;Kim, Ki-Jae;Lee, Churl-Kyoung;
금오공과대학교 신소재시스템공학부;금오공과대학교 그린에너지시스템센터;전자부품연구원 차세대전지연구센터;
School of Advanced Materials and System Engineering, Kumoh National Institute of Technology;Green Energy System Center, Kumoh National Institute of Technology;Advanced Battery Research Center, Korea Electronics Technology Institute;
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.
Ni-W alloy;Electrodeposition;Corrosion;Surface conductivity;Bipolar plate;
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