Impact and Corrosion Resistances of Duplex Epoxy/Enamel Coated Plates

Abstract

The microstructure, impact resistance, pull-off adhesion strength, and corrosion resistances of duplex epoxy/enamel coating applied on steel plates are investigated experimentally. In comparison with those of individual epoxy and enamel coatings, the duplex coating has lower adhesion strength, higher impact resistance, higher short-term and long-term corrosion resistances both in 3.5 wt% NaCl solution and saturated Ca(OH)2 solution with various chloride concentrations. This is because the outer epoxy fills the micro pores in the inner enamel. Impact induced damage significantly reduces the corrosion resistances of epoxy and duplex coatings but has little effect on the corrosion resistance of enamel coating.

Department(s)

Civil, Architectural and Environmental Engineering

Keywords and Phrases

Corrosion Resistance; Duplex Coating; EIS; Enamel Coating; Epoxy; Impact Resistance; SEM; Adhesion; Bond Strength (Materials); Coatings; Scanning Electron Microscopy; 3.5 Wt% NaCl Solution; Chloride Concentrations; Induced Damage; Short Term; Steel Plates

International Standard Serial Number (ISSN)

0950-0618

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2016 Elsevier Ltd, All rights reserved.

Publication Date

01 Jun 2016

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