강판상에 굴 패각을 이용한 탄산칼슘 피막의 형성
Formation of Calcareous Deposit on Steel Plate by using Waste Oyster Shell
2
조회
0
다운로드
3
인용
0
참고문헌
키워드
초록
Enormous amount of waste oyster-shell (OS) has a major disposal problem in coastal regions. OSs have attracted much attention for recycling, because these are mainly composed of calcium carbonate with rare impurities. In this study, we demonstrate the calcareous deposit films on steel plate by using OSs on the basic of cathodic protection technique. The composition of the OSs was analyzed by wavelength dispersive X-ray fluorescence spectrometer. Carbon dioxide gas was pumped into distilled water to make carbonic acid solution for dissolution of OS. The calcareous deposit was characterized by second electron microscope (SEM), energy dispersive X-ray analysis (EDX) and X-ray diffraction. Corrosion rates were estimated by measurements of anodic polarization and immersion test. It is confirmed that calcareous deposits on steel plate are formed under all condition of cathodic protection by using waste OS from the SEM and EDX results. Calcareous deposits on steel by OS provide good corrosion resistance by acting as a barrier to oxygen supply to the steel surface.
Abstract
Enormous amount of waste oyster-shell (OS) has a major disposal problem in coastal regions. OSs have attracted much attention for recycling, because these are mainly composed of calcium carbonate with rare impurities. In this study, we demonstrate the calcareous deposit films on steel plate by using OSs on the basic of cathodic protection technique. The composition of the OSs was analyzed by wavelength dispersive X-ray fluorescence spectrometer. Carbon dioxide gas was pumped into distilled water to make carbonic acid solution for dissolution of OS. The calcareous deposit was characterized by second electron microscope (SEM), energy dispersive X-ray analysis (EDX) and X-ray diffraction. Corrosion rates were estimated by measurements of anodic polarization and immersion test. It is confirmed that calcareous deposits on steel plate are formed under all condition of cathodic protection by using waste OS from the SEM and EDX results. Calcareous deposits on steel by OS provide good corrosion resistance by acting as a barrier to oxygen supply to the steel surface.
참고문헌 (10)
- Hyun-Suk Yoon, "Mechanical charateristics of crushed oyster shell", Journal of Korean Society of Urban Environment, 4, pp.1~9 (2004)
- 김민진, "굴패각, 석탄회 및 굴착잔토를 이용한 무다짐 처리공법용 뒷채움재 개발", 청정기술, 19(4), pp.423~429 (2013), 한국청정기술학회[DOI]
- 오승진, "폐자원(폐석회, 굴패각, 바닥재)을 이용한 토양 중화제 개발 연구", 지하수토양환경, 17(6), pp.92~101 (2012), 한국지하수토양환경학회
- Nam-Chan Kim, "The effect of waste oyster shell on anaerobic composting of garbage", J. of KOWREC, 8, pp.89~96 (2000)
- Sang-Kyu Park, "Oyster shell as substitute for aggregate in mortar,", Waste Manage. Res., 22, pp.158~170 (2004)
- 윤현석, "에틸벤젠에 의한 굴폐각 혼합공시체의 압축강도 변화 특성", 한국지반공학회논문집, 18(6), pp.103~116 (2002), 한국지반공학회
- 이성준, "해수 중 CO2 기체의 유입에 의한 환경 친화적인 전착 코팅막의 형성과 그 내식특성", 한국표면공학회지, 47(1), pp.39~47 (2014), 한국표면공학회[DOI]
- 이승효, "천연해수 중 음극방식 응용 원리에 의해 제작한 Mg(OH)2 코팅막의 밀착성 및 내식성", 한국표면공학회지, 46(1), pp.1~8 (2013), 한국표면공학회[DOI]
- 박준무, "해양환경 중 음극전류 프로세스에 의해 강판에 형성된 석회질 피막의 특성 분석", 한국표면공학회지, 49(2), pp.166~171 (2016), 한국표면공학회[DOI]
- Ph. Refait, "Electrochemical formation and transformation of corrosion products on carbon steel under cathodic protection in seawater", Corrosion Science, 71, pp.32~36 (2013)