해수 유속 변화에 따른 Al5052-O와 Al6061-T6 알루미늄 합금의 침식부식 특성
Erosion Corrosion Characteristics of Al5052-O and Al6061-T6 Aluminum Alloys with Flow Rate of Seawater
0
조회
0
다운로드
2
인용
0
참고문헌
키워드
초록
The hull material of a high-speed ship may cause erosion damage from fluid impact. When physical erosion and electrochemical corrosion combine, erosion corrosion damage occurs. The aluminum ship is vulnerable to erosion corrosion because it can be operated at high speed. Thus, in this study, Al5052-O and Al6061-T6 aluminum alloys for the marine environment were selected as experimental materials. The erosion corrosion resistance of Al5052-O and Al6061-T6 aluminum alloys in seawater was investigated by an erosion test and potentiodynamic polarization test at the various flow rate (0 m/s, 5 m/s, 10 m/s, 15 m/s, 20 m/s). Erosion corrosion characteristics were evaluated by surface analysis, 3D analysis, SEM analysis, and the Tafel extrapolation method. The results of surface damage analysis after the erosion test showed that Al6061-T6 presented better erosion resistance than Al5052-O. The results of the potentiodynamic polarization test at the various flow rate, corrosion current density by Tafel extrapolation presented lower values of Al6061-T6 than Al5052-O. Al5052-O showed more surface damage than Al6061-T6 at all flow rates. Consequently, Al6061-T6 presented better erosion corrosion resistance than Al5052-O. The results of this study are valuable data for selecting hull material for an aluminum alloy vessel.
Abstract
The hull material of a high-speed ship may cause erosion damage from fluid impact. When physical erosion and electrochemical corrosion combine, erosion corrosion damage occurs. The aluminum ship is vulnerable to erosion corrosion because it can be operated at high speed. Thus, in this study, Al5052-O and Al6061-T6 aluminum alloys for the marine environment were selected as experimental materials. The erosion corrosion resistance of Al5052-O and Al6061-T6 aluminum alloys in seawater was investigated by an erosion test and potentiodynamic polarization test at the various flow rate (0 m/s, 5 m/s, 10 m/s, 15 m/s, 20 m/s). Erosion corrosion characteristics were evaluated by surface analysis, 3D analysis, SEM analysis, and the Tafel extrapolation method. The results of surface damage analysis after the erosion test showed that Al6061-T6 presented better erosion resistance than Al5052-O. The results of the potentiodynamic polarization test at the various flow rate, corrosion current density by Tafel extrapolation presented lower values of Al6061-T6 than Al5052-O. Al5052-O showed more surface damage than Al6061-T6 at all flow rates. Consequently, Al6061-T6 presented better erosion corrosion resistance than Al5052-O. The results of this study are valuable data for selecting hull material for an aluminum alloy vessel.
참고문헌 (13)
- K. S. Yeom, , Proc. Conf., 1, pp.227~230 (1995), The Korean Welding and Joining Society
- S. Y. Lee, , J. Kor. Soc. Fish. Mar. Sci. Educ, 10, pp.69~ (1998)
- S. R. Dehghani, , Cold Reg. Sci. Technol, 126, pp.1~ (2016)
- U. J. Lim, , J. Kor. Soc. Fish. Ocean Technol, 32, pp.196~ (1999)
- 박일초, "대형요트의 내구성 향상을 위한 도장작업의 최적화 및 캐비테이션 침식 특성", 대한용접접합학회지, 37(3), pp.254~261 (2019), 대한용접접합학회[DOI]
- 김성종, "선박의 해양 부식과 부식방지 장치", 한국표면공학회지, 44(3), pp.105~116 (2011), 한국표면공학회
- S. J. Kim, , J. Korean Soc. Mar. Eng, 30, pp.540~ (2006)
- A. George, , Corrosion, 37, pp.232~ (1981)
- C. Vargel, "Corrosion of Aluminium", pp.113~117 (2004), Elevier Ltd
- 이승준, "해양 금속재료의 부식속도와 방식전류에 미치는 유속의 영향", CORROSION SCIENCE AND TECHNOLOGY, 14(5), pp.226~231 (2015), 한국부식방식학회[DOI]
- Buchheit, R. G., , J. Electrochem. Soc, 142, pp.3994~ (1995)
- S. Ono, , J. Electrochem. Soc, 152, pp.39~ (2005)
- F. D. Bogar, , J. Electrochem. Soc, 119, pp.462~ (1973)