선박용 5052-O 알루미늄 합금의 해수 내 진폭 변수에 따른 캐비테이션-침식 손상 특성
Characteristics of Cavitation-Erosion Damage with Amplitude in Seawater of 5052-O Al Alloy for Ship
2
조회
0
다운로드
2
인용
0
참고문헌
키워드
초록
The characteristics of cavitation-erosion damage with changes in the amplitude of 5052-O aluminum alloyfor ships were investigated in a seawater environment. In the cavitation-erosion experiment, the cavitationenvironment was created using a vibration-generating device with a piezo-electric effect. The amplitudesof 5 μm, 10 μm, and 30 μm were created by changing the geometric shape of the cavitation horn. Theresistance characteristics of cavitation-erosion damage were evaluated by weight loss and pitting area. Thedamaged surface was analyzed using scanning electron microscopy (SEM) and 3D optical microscopy. Asthe amplitude increased, the amount of damage and the area of the damaged surface increased, and thedamage was concentrated at the center and edge of the specimen. The pit was created after the initial incubationperiod with increasing experimental time, and then the pits were merged to grow and propagate into craters,and eventually, the surface was detached and damaged. The cavitation-erosion damage after 30 minuteswith amplitude of 10 μm and 30 μm was 1.48 and 2.21 times compared to 5 μm, respectively.
Abstract
The characteristics of cavitation-erosion damage with changes in the amplitude of 5052-O aluminum alloyfor ships were investigated in a seawater environment. In the cavitation-erosion experiment, the cavitationenvironment was created using a vibration-generating device with a piezo-electric effect. The amplitudesof 5 μm, 10 μm, and 30 μm were created by changing the geometric shape of the cavitation horn. Theresistance characteristics of cavitation-erosion damage were evaluated by weight loss and pitting area. Thedamaged surface was analyzed using scanning electron microscopy (SEM) and 3D optical microscopy. Asthe amplitude increased, the amount of damage and the area of the damaged surface increased, and thedamage was concentrated at the center and edge of the specimen. The pit was created after the initial incubationperiod with increasing experimental time, and then the pits were merged to grow and propagate into craters,and eventually, the surface was detached and damaged. The cavitation-erosion damage after 30 minuteswith amplitude of 10 μm and 30 μm was 1.48 and 2.21 times compared to 5 μm, respectively.
참고문헌 (21)
- J.-H. Lee, , J. Korea Ship Safety Technol. Authority, (2) (2012)
- 김성종, "해수 환경하에서 알루미늄합금(5083F) 의 외부전원법에 의한 최적 방식전위 결정에 관한 연구", 한국표면공학회지, 40(6), pp.262~270 (2007), 한국표면공학회
- L Wagner, "Mechanical surface treatments on titanium, aluminum and magnesium alloys", Materials Science and Engineering: A, 263(2), pp.210~216 (1999), Elsevier BV[DOI]
- S. J. Kim, , J. Korean Soc. Mar. Environ. Saf., 13, pp.223~ (2007)
- C. Vargel, "Corrosion of Aluminum", pp.88~109 (2004), Elsevier Science
- Hosni Ezuber, "A study on the corrosion behavior of aluminum alloys in seawater", Materials & Design, 29(4), pp.801~805 (2008), Elsevier BV[DOI]
- I. R. Jones, "An experimental study of the forces generated by the collapse of transient cavities in water", Journal of Fluid Mechanics, 7(4), pp.596~609 (1960), Cambridge University Press (CUP)[DOI]
- T. Momma, "A study of pressures and erosion produced by collapsing cavitation", Wear, 186-187, pp.425~436 (1995), Elsevier BV[DOI]
- M. H. Lee, , Corros. Sci. Tech, 10, pp.218~ (2011)
- H. I. Lee, "Understanding and application of aluminum application technology", Steel&MetalNews, 14~38 (2005)
- J. H. Lee, "Aluminum – Understanding and application of aluminum", pp.1~31 (2016), Myungjin Publishing
- S. J. Kim, , J. Korean Soc. Mar. Eng, 30, pp.540~ (2006)
- S. J. Kim, , Corros. Sci. Tech, 10, pp.136~ (2011)
- 김성종, "5000계열 Al 합금의 캐비테이션 특성에 관한 워터 캐비테이션 피닝의 영향", 해양환경안전학회지, 18(5), pp.481~487 (2012), 해양환경안전학회[DOI]
- J.F. Santa, "Slurry erosion of thermal spray coatings and stainless steels for hydraulic machinery", Wear, 263(1-6), pp.258~264 (2007), Elsevier BV[DOI]
- C.E. Correa, "Wear mechanisms of epoxy-based composite coatings submitted to cavitation", Wear, 271(9-10), pp.2274~2279 (2011), Elsevier BV[DOI]
- K. J. Kim, , Korean J. Chem. Eng, 32, pp.72~ (1994)
- L.A. Espitia, "Cavitation resistance, microstructure and surface topography of materials used for hydraulic components", Tribology International, 43(11), pp.2037~2045 (2010), Elsevier BV[DOI]
- P.Veerabhadra Rao, "Evaluation of epoxy resins in flow cavitation erosion", Wear, 122(1), pp.77~96 (1988), Elsevier BV[DOI]
- A. Thiruvengadam, , J. Ship. Res, 8, pp.39~ (1964)
- D. S. Won, , J. Corros. Sci. Soc. Kor., 23, pp.215~ (1994)