한국표면공학회지 (Journal of the Korean institute of surface engineering)

  • 제49권4호
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  • Pages.349-356
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  • 2016
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  • 1225-8024(pISSN)
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  • 2288-8403(eISSN)
한국표면공학회 (The Korean Institute of Surface Engineering)
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양극산화 처리된 5083 알루미늄 합금의 해수 내 유속변화에 따른 전기화학적 손상 특성

Electrochemical Damage Characteristics of Anodized 5083 Aluminum Alloy with Flow Rate in Seawater

  • 박일초 (목포해양대학교 기관시스템공학부) ;
  • 김성종 (목포해양대학교 기관시스템공학부)
  • Park, Il-Cho (Division of Marine Engineering, Mokpo National Maritime University) ;
  • Kim, Seong-Jong (Division of Marine Engineering, Mokpo National Maritime University)
  • 투고 : 2016.08.17
  • 심사 : 2016.08.29
  • 발행 : 2016.08.31
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초록

In this study, electrochemical damage behaviors with flow rate were investigated for anodized 5083 aluminum alloy in seawater. As the results of anodic polarization experiments and potentiostatic experiments at +1.0 V (vs. SSCE), the non-flow condition presented largely damaged surface resulting from a tendency of local pitting damage. Under various flow rate conditions, however, less surface damages under the application of anodic potential was obtained which is attributed to no accumulation of $H^+$ and $Cl^-$ ions on the surface. On the other hand, the results of the potentiostatic experiments at -1.0 V (vs. SSCE) with flow rate showed that anodized 5083 aluminum alloys could achieve the effective cathodic protection by low cathodic protection current density less than $2.61{\times}10^{-7}A/cm^2$ even under high flow rate of 1 m/s.

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참고문헌

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