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논문 기본 정보

자료유형
학술저널
저자정보
이정형 (목포해양대학교) 박일초 (목포해양대학교) 박재철 (한국선급) 김성종 (목포해양대학교)
저널정보
한국표면공학회 한국표면공학회지 한국표면공학회지 제49권 제5호
발행연도
2016.10
수록면
423 - 430 (8page)

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초록· 키워드

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In this study, we investigated the corrosion damage characteristics of steel for offshore wind turbine tower substructure using an accelerated electrochemical test. The galvanostatic corrosion test method was employed with a conventional 3 electrode cell in natural sea water, and the steel specimen was served as a working electrode to induce corrosion in an accelerated manner. Surface and cross-sectional image of the damaged area were obtained by optical microscope and scanning electron microscope. The weight of the specimens was measured to determine the gravimetric change before and after corrosion test. The result revealed that the steel tended to suffer uniform corrosion rather than localized corrosion due to active dissolution reaction under the constant current regime. With increasing galvanostatic current density, the damage depth and surface roughness of surface was increased, showing approximately 25 times difference in damage depth between the lowest current density (1 ㎃/㎠) and the highest current density (200 ㎃/㎠). The gravimetric observation showed that the weight loss was proportionally increased with increment of current density that has 75 times different according by experimental conditions. Consequently, uniform corrosion of the steel specimen was conveniently induced by the electrochemically accelerated corrosion technique, and it was possible to control the extent of the corrosion damage by varying the current density.

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Abstract
1. 서론
2. 실험방법
3. 실험결과 및 고찰
4. 결론
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UCI(KEPA) : I410-ECN-0101-2017-581-001637462