Title: Corrosion behaviour of organic composite coated steel sheet

Authors: K. Takao, H. Ogishi, H. Kimura, T. Ichida

Addresses: Iron and Steel Laboratories, Kawasaki Steel Corporation, Chiba 260, Japan. ' Iron and Steel Laboratories, Kawasaki Steel Corporation, Chiba 260, Japan. ' Iron and Steel Laboratories, Kawasaki Steel Corporation, Chiba 260, Japan. ' Iron and Steel Laboratories, Kawasaki Steel Corporation, Chiba 260, Japan

Abstract: Effects of resin types and their silica contents were studied on corrosion behaviour of organic composite coated steel sheets. The following results were obtained. (1) High corrosion resistance of organic composite coated steel sheets is brought by preservation of corrosion products on the coating. (2) Types of resin and contents of silica strongly affect the corrosion resistance by changing the kind of corrosion products developed on organic composite coatings. Coating with hydrophilic resin shows good resistance with protective ZnC1₂.4Zn(OH)₂ formation. However, coating with hydrophobic resin forms ZnO which retards the corrosion resistance.

Keywords: corrosion resistance; hydrophilic resins; organic composite coatings; resins; steel sheets; silica.

DOI: 10.1504/IJMPT.1991.036643

International Journal of Materials and Product Technology, 1991 Vol.6 No.4, pp.381 - 395

Published online: 05 Nov 2010 *

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