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http://dx.doi.org/10.9726/kspse.2014.18.6.040

Anti-Corrosion Characteristics of WC-based Alloy Coatings Fabricated by HVOF Process - Polarization Characteristics in Alkaline Solution -  

Kim, Tae-Yong (Graduate School of Pukyong National University)
Kim, Yeong-Sik (Department of Mechanical & Automotive Engineering, Pukyong National University)
Kim, Jae-Dong (Institute of Marine Industry, Gyeongsang National University)
Publication Information
Journal of Power System Engineering / v.18, no.6, 2014 , pp. 40-44 More about this Journal
Abstract
The purpose of this paper is to investigate polarization characteristics of WC-based alloy coatings in alkaline solution. The coatings were fabricated with WC-CrC-Ni, WC-Co-Cr and WC-Co composite powders by HVOF process. Corrosion tests of coatings and substrate were carried out using potentiostat/galvanostat at solution with pH 8 and pH 13. Corrosion potential(Ecorr) and corrosion current density(Icorr) could be studied from polarization curve, and corrosion behavior was analyzed by SEM and EDS. WC-Co-Cr coating and WC-CrC-Ni coating showed more favorable anti-corrosion characteristics than WC-Co coating and substrate at solution with pH 8 and pH 13.
Keywords
High Velocity Oxygen Fuel(HVOF); WC-based Alloy Coating; Polarization Curve; Corrosion Potential; Corrosion Current Density;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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