Effect of Surface Contaminants Remained on the Blasted Surface on Epoxy Coating Performance and Corrosion Resistance

백광기; Ki Hong Kim; 박진환; Chung Seo Park; Mong Kyu Chung

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자료유형: 학술저널

저자정보: 백광기 Ki Hong Kim 박진환 Chung Seo Park Mong Kyu Chung

저널정보: 한국부식방식학회 Corrosion Science and Technology Corrosion Science and Technology 제5권 제1호

발행연도: 2006.1

수록면: 27 - 32 (6page)

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연구주제

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연구배경

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연구방법

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연구결과

초록· 키워드

오류제보하기

One of the critical issues in the coating specification is the allowable limit of surface contaminant(s) - such as soluble salt(s), grit dust, and rust - after grit blasting. Yet, there is no universally accepted data supporting the relationship between the long-term coating performance and the amount of various surface contaminants allowed after grit blasting. In this study, it was attempted to prepare epoxy coatings applied on grit-blasted steel substrate dosed with controlled amount of surface contaminants - such as soluble salt(s), grit dust, and rust. Then, coating samples were subjected to 4,200 hours of cyclic test(NORSOK M-501), which were then evaluated in terms of resistance to rust creepage, blistering, chalking, rusting, cracking and adhesion strength. Additional investigations on the possible damage at the paint/steel interface were carried out using an Electrochemical Impedance Spectroscopy(EIS) and observations of under-film-corrosion. Test results suggested that the current industrial specifications were well matched with the allowable degree of rust, whereas the allowable amount of soluble salt and grit dust after grit blasting showed a certain deviation from the specifications currently employed for fabrication of marine vessels and offshore facilities.

#soluble salt #rust #grit dust #blasting #protective coating #Sa 2.5

참고문헌 (6)

참고문헌 신청

/ / Notes No.33.1 Corrosion prevention of tanks and holds.

/ 1991 / Report 0329

/ 1996 / Protective Coatings & Linings : 28 ~ 34

/ 1997 / Protective Coatings Europe : 18 ~ 25

/ 2002 / Guidelines for ballast tank coating system and surface preparation

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