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

다국어 초록 (Multilingual 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 (Reference)

1 J.-H. Lee, (2) : 2012

2 D. S. Won, 23 : 215-, 1994

3 A. Thiruvengadam, 8 : 39-, 1964

4 S. J. Kim, 13 : 223-, 2007

5 K. J. Kim, 32 : 72-, 1994

6 S. J. Kim, 10 : 136-, 2011

7 S. J. Kim, 30 : 540-, 2006

8 M. H. Lee, 10 : 218-, 2011

9 김성종, "해수 환경하에서 알루미늄합금(5083F) 의 외부전원법에 의한 최적 방식전위 결정에 관한 연구" 한국표면공학회 40 (40): 262-270, 2007

10 C.E. Correa, "Wear mechanisms of epoxy-based composite coatings submitted to cavitation" Elsevier BV 271 (271): 2274-2279, 2011

11 H. I. Lee, "Understanding and application of aluminum application technology"

12 J.F. Santa, "Slurry erosion of thermal spray coatings and stainless steels for hydraulic machinery" Elsevier BV 263 (263): 258-264, 2007

13 L Wagner, "Mechanical surface treatments on titanium, aluminum and magnesium alloys" Elsevier BV 263 (263): 210-216, 1999

14 P.Veerabhadra Rao, "Evaluation of epoxy resins in flow cavitation erosion" Elsevier BV 122 (122): 77-96, 1988

15 C. Vargel, "Corrosion of Aluminum" Elsevier Science 88-109, 2004

16 L.A. Espitia, "Cavitation resistance, microstructure and surface topography of materials used for hydraulic components" Elsevier BV 43 (43): 2037-2045, 2010

17 I. R. Jones, "An experimental study of the forces generated by the collapse of transient cavities in water" Cambridge University Press (CUP) 7 (7): 596-609, 1960

18 J. H. Lee, "Aluminum – Understanding and application of aluminum" Myungjin Publishing 1-31, 2016

19 Hosni Ezuber, "A study on the corrosion behavior of aluminum alloys in seawater" Elsevier BV 29 (29): 801-805, 2008

20 T. Momma, "A study of pressures and erosion produced by collapsing cavitation" Elsevier BV 186-187 : 425-436, 1995

21 김성종, "5000계열 Al 합금의 캐비테이션 특성에 관한 워터 캐비테이션 피닝의 영향" 해양환경안전학회 18 (18): 481-487, 2012