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http://dx.doi.org/10.3744/SNAK.2004.41.1.088

Evaluation Anticorrosive Properties of Corrosion Protective Organic Coatings by Electrochemical Impedance Spectroscopy  

박진환 (부경대학교 응용화학공학부)
이근대 (부경대학교 응용화학공학부)
전호환 (부산대학교 조선해양공학과)
Publication Information
Journal of the Society of Naval Architects of Korea / v.41, no.1, 2004 , pp. 88-93 More about this Journal
Abstract
Electrochemical impedance spectroscopy was used to evaluate the anticorrosive properties of resin(alkyd, epoxy, urethane) and pigment(hydroxy apatite(HAp), zinc potassium chromate(ZPC). red lead(RL)). The corrosion behavior of coatings applied on steel has been investigated during exposure to 0.5M-NaCl The anticorrosive performances of resins were found to depend on their chemical nature and decreased in the order of urethane > epoxy > alkyd resin coating. Hydroxy apatite and zinc potassium chromate pigment which have property to passivate the substrate showed relatively high anticorrosive performance.
Keywords
hydroxy apatite pigment; red lead pigment; zinc potassium chromate pigment; electrochemical impedance spectroscopy; alkyd resin; epoxy resin; urethane resin;
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