Corrosion Science and Technology

The Corrosion Science Society of Korea (한국부식방식학회)
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Investigation of Corrosion Characteristics with Zn, PTFE Hybrid Coating for SS400 in Sea Water

Zn, PTFE 복합 코팅에 의한 SS400 강의 해수 부식 특성 변화 연구

  • Han, Min Su (Division of Marine Engineering, Mokpo Maritime University) ;
  • Prak, Jae Cheul (Division of Marine Engineering, Mokpo Maritime University) ;
  • Jang, Seok Ki (Division of Marine Engineering, Mokpo Maritime University) ;
  • Kim, Seong Jong (Division of Marine Engineering, Mokpo Maritime University)
  • 한민수 (목포해양대학교 기관시스템공학부) ;
  • 박재철 (목포해양대학교 기관시스템공학부) ;
  • 장석기 (목포해양대학교 기관시스템공학부) ;
  • 김성종 (목포해양대학교 기관시스템공학부)
  • Received : 2011.08.29
  • Accepted : 2011.12.23
  • Published : 2011.12.01
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Abstract

The severe corrosion environment makes the steel product lifecycle short while Cu-alloys with anti-corrosion characteristic used in sea water are too expensive. This study shows that the Cu-alloy(Cu-37.25% Zn-0.67%Al) used in sea water environment can be superseded by SS400 with various coating process, evaluating electrochemical characteristics. Three coating processes were applied to SS400 such as PTFE + Zn coaing, Zn + PTFE coating and only Zn electrogalvanizing coaing. Various electrochemical experiments such as open circuit potential measurments, potentiodynamic polarization tests and analyses of Tafel constants. Mechanical properties were also measured by tensile test and hardness tests. As a result, Zn + PTFE coating for SS400 steel presented the excellent anti-corrosion characteristic in sea water.

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References

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