한국표면공학회지 (Journal of the Korean institute of surface engineering)

  • 제48권6호
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  • Pages.354-359
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  • 2015
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  • 1225-8024(pISSN)
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  • 2288-8403(eISSN)
한국표면공학회 (The Korean Institute of Surface Engineering)
권호 표지
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알루미늄 용융 도금된 304 스테인리스강의 해수 내 전기화학적 부식 특성 평가

Evaluation of Electrochemical Corrosion Characteristics for Hot-Dip Aluminized 304 Stainless Steel in Seawater

  • 정상옥 (목포해양대학교 기관시스템공학부) ;
  • 박일초 (목포해양대학교 기관시스템공학부) ;
  • 한민수 (목포해양대학교 기관시스템공학부) ;
  • 김성종 (목포해양대학교 기관시스템공학부)
  • Chong, Sang-Ok (Division of Marine Engineering, Mokpo Maritime University) ;
  • Park, Il-Cho (Division of Marine Engineering, Mokpo Maritime University) ;
  • Han, Min-Su (Division of Marine Engineering, Mokpo Maritime University) ;
  • Kim, Seong-Jong (Division of Marine Engineering, Mokpo Maritime University)
  • 투고 : 2015.12.21
  • 심사 : 2015.12.30
  • 발행 : 2015.12.31
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초록

Stainless steel has poor corrosion resistance in marine environment due to the breakdown of a passive film caused by chloride. It suffers electrochemical corrosion like pitting corrosion, crevice corrosion, and stress corrosion crack (SCC) in marine environment. In general, it indicates that the passive film of $Al_2O_3$ has better corrosion resistance than that of $Cr_2O_3$ in seawater. This paper investigated the damage behavior 304 stainless steel and hot-dip aluminized 304 stainless steel in seawater solution. Various electrochemical experiments were carried out including potential measurement, potentiodynaimic experiment, Tafel analysis and galvanostatic experiment. As a result of anodic polarization experiment, higher pitting damage depth was indicated at 304 stainless steel than hot-dip aluminized 304 stainless steel. In addition, relatively higher corrosion current density was shown at hot-dip aluminized stainless steel as a result of Tafel analysis.

키워드

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피인용 문헌

  1. Electrochemical Characteristics under Cavitation-Erosion Environment of STS 304 and Hot-Dip Aluminized STS 304 in Sea Water Solution vol.49, pp.1, 2016, https://doi.org/10.5695/JKISE.2016.49.1.26