Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
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Corrosion Resistance of Degraded STS310S and STS347H by Cr-free Modified Si Organic/Inorganic Hybrid Coating Solution

Cr-free Si 변성 유/무기하이브리드 코팅액에 의한 열화된 STS310S 및 STS347H의 내식성

  • Lee, So-Young (Dept. of Materials Sciencen and Engineering, Graduate School, Pukyong Nat'l Univ.) ;
  • Kim, Young-Soo (UR Interdisciplinary Program of Mechanical Engineering, Graduate School, Pukyong Nat'l Univ.) ;
  • Jeong, Hee-Rok (Prepoll Co. Ltd.) ;
  • Kim, Gui-Shik (Dept. of Mechanical Engineering, Jeju Nat'l Univ.) ;
  • Nam, Ki-Woo (Dept. of Materials Science and Engineering, Pukyong Nat'l Univ.)
  • 이소영 (부경대학교 대학원 재료공학과) ;
  • 김영수 (부경대학교 대학원 학연협동기계공학) ;
  • 정희록 ((주)프리폴) ;
  • 김귀식 (제주대학교 기계공학과) ;
  • 남기우 (부경대학교 재료공학과)
  • Received : 2015.07.13
  • Accepted : 2015.08.17
  • Published : 2015.12.31
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Abstract

Austenitic stainless steels generally experience the occurrence of chromium-depleted zones at the boundaries, known as sensitization, caused by the carbide precipitation that takes place due to a welding process or heat treatment. Normally, the depleted zones become the focus of the intense corrosion. In this study, the Cr-free organic/inorganic hybrid solution was developed, and the artificially degraded STS316S and STS347H with the solution-coating investigated the corrosion resistance by salt spray test. Both the OIBD-1 and OIBD-2 solutions improved the corrosion resistance of STS310S and STS347H. The corrosion resistance with the OIBD-1 solution was better than that of OIBD-2 solution. Additionally, Both solutions have been proven excellence in adhesion ability, boiling water resistance and flexibility. However, a problem of rubbing after the boiling was found out to be overcome.

Keywords

References

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