doi: 10.14773/CST.2020.19.6.310 BibTeX RIS Mendeley


경질양극산화된 5083-H321 알루미늄 합금의 해수 내 액적충격침식부식 손상 연구

Investigation of Liquid Droplet Impingement Erosion Corrosion based on the Flow Rate of Anodized 5083-H321 Al Alloy in Seawater

  • 신동호(목포해양대학교) ,
  • 김성종(목포해양대학교) ,

초록

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This study investigated the damage to the specimen due to liquid droplet impingement erosion corrosion, which improved the corrosion resistance and durability via hard anodization of 5083-H321 aluminum alloy, which is widely used for small ships and marine structures. The experiment combined liquid droplet impingement erosion and electrochemical equipment with the flow rates in natural seawater solution. Subsequently, Tafel extrapolation of polarization curves was performed to evaluate damage due to the liquid droplet impingement erosion corrosion. The damaged surface was observed using a 3D microscope and a scanning electron microscope. The degree of pitting damage was measured using the Image J program, and the surface hardness was measured using the micro-Vickers hardness tester. The corrosion current density, area, depth, and ratio of the damaged areas increased with the increase in flow rate. The grain size of the damaged area at a flow rate of 20 m s-1 showed fewer and minor differences in height, and a smooth curved shape. The hardness of the damaged surface tended to decrease with increase in flow rate.


키워드

Sea water, 5083-H321 Al alloy, Marine structures, Flow rate, Liquid droplet impingement erosion corrosion


발행 정보

서지정보
Corrosion Science and TechnologyCorrosion Science and Technology / v.19, no.6, 2020년, pp.310-317
발행기관
한국부식방식학회
저널 DOI
doi: 10.14773
pISSN
1598-6462
eISSN
2288-6524
발행일
2020.12.31
언어
영어

첨부파일

1 CST 19-6-5 Investigation of Liquid Droplet Impingement Erosion Corrosion.pdf

이력 정보

2020.12.31 발행
2021.01.06 DOI발급

위치 정보


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