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http://dx.doi.org/10.9726/kspse.2014.18.4.072

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

Kim, Tae-Yong (Graduate School of Pukyong National University)
Kim, Yeong-Sik (Department of Mechanical & Automotive Engineering, Pukyong National University)
Publication Information
Journal of Power System Engineering / v.18, no.4, 2014 , pp. 72-77 More about this Journal
Abstract
The aim of this study to investigate polarization characteristics of WC-based alloy coatings fabricated by high velocity oxygen fuel(HVOF) process. The coatings were fabricated by HVOF process with WC-CrC-Ni, WC-Co-Cr, WC-Co composite powders. Corrosion tests were carried out using potentiostat/galvanostat at solution with pH 2 and pH 6. Corrosion potential(Ecorr) and corrosion current density(Icorr) could be analyzed from polarization curve. WC-Co-Cr coating showed more incorrodible characteristics than other coatings at solution pH 2. WC-CrC-Ni coating was more favorable anti-corrosion characteristics than other coatings at solution with pH 6.
Keywords
High Velocity Oxygen Fuel(HVOF); WC-based Alloy Coating; Polarization Curve; Corrosion Potential; Corrosion Current Density;
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