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High Temperature Ablation Behaviors of Multilayer Coated Stainless Steel

다층 코팅된 Stainless Steel의 고온 내삭마특성

  • Choi, Kwangsu (Department of Materials Science and Engineering, Hanbat National University) ;
  • Yang, Wonchul (Department of Materials Science and Engineering, Hanbat National University) ;
  • Kim, Yeong joo (Department of Materials Science and Engineering, Hanbat National University) ;
  • Park, Joon Sik (Department of Materials Science and Engineering, Hanbat National University) ;
  • Kim, Min Kyu (Department of Materials Science and Engineering, Hanbat National University)
  • 최광수 (한밭대학교 신소재공학과) ;
  • 양원철 (한밭대학교 신소재공학과) ;
  • 김영주 (한밭대학교 신소재공학과) ;
  • 박준식 (한밭대학교 신소재공학과) ;
  • 김민규 (한밭대학교 신소재공학과)
  • Received : 2017.12.21
  • Accepted : 2018.02.06
  • Published : 2018.03.27

Abstract

Stainless steel is being used in various industries such as automobile and aerospace for its cheap manufacturing cost and excellent mechanical properties. However, stainless steel failed to stably protect a specimen with a $Cr_2O_3$ protective layer at temperatures above $1000^{\circ}C$. Thus, improving the high temperature flame resistance of the specimen through additional surface coating was needed. In this study, multilayer coatings of YSZ and $Al_2O_3$ were performed on SUS 304 specimens using pack cementation coatings and thermal plasma spray. The multilayer coated specimen showed enhanced thermal properties due to the coated layers. The microstructures and phase stability are discussed together with flame conditions at $1350^{\circ}C$.

Keywords

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