An Electrochemical Study on the Corrosion Property of Materials for Sea Water Heat Exchange System

해수 열교환기용 재료의 부식특성에 관한 전기 화학적 연구

  • 김진경 (한국해양수산연구원) ;
  • 김강희 (동화엔텍(주)) ;
  • 김성종 (한국해양대학교 부식방식공학연구소) ;
  • 박근현 (한국해양대학교 부식방식공학연구소) ;
  • 문경만 (한국해양대학교 부식방식공학연구소)
  • Published : 2002.01.01

Abstract

Recently all kinds of structural materials are subjected to the severe corrosive environment. Especially corrosion problems of heat exchanger such as galvanic corrosion, erosion and cavitation raised by both contaminated solution and high velocity of fluid to increase cooling effect of heat exchanger have been frequently reported in these days. In this study two kinds of sheet materials and five kinds of tube materials are used for galvanic corrosion characteristics and their corrosion current density calculation. The tube materials having the most galvanic corrosion resistance between tube and sheet of heat exchanger were Al Brass(68700) and Al Brass(C6872TS) and although Ti tube predominantly indicated the highest individual corrosion resistance among those five tube materials. it appeared that Ti tube can be allowed as sheet materials to get galvanic corrosion easily. However it is considered that Cu-Ni tube materials is not only easy to produce galvanic corrosion significantly between tube and sheet regardless of kinds of sheet materials but also is appeared considerably its own high corrosion current density

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