Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Thermal Durability of 4YSZ Thermal Barrier Coating Deposited by Electron Beam PVD

전자빔을 이용한 물리기상증착법으로 제조된 열차폐용 4 mol% YSZ 코팅의 내열특성

  • Park, Chanyoung (Korea Institute of Ceramic Engineering and Technology) ;
  • Yang, Younghwan (Korea Institute of Ceramic Engineering and Technology) ;
  • Kim, Seongwon (Korea Institute of Ceramic Engineering and Technology) ;
  • Lee, Sungmin (Korea Institute of Ceramic Engineering and Technology) ;
  • Kim, Hyungtae (Korea Institute of Ceramic Engineering and Technology) ;
  • Lim, Daesoon (Department of Materials Science and Engineering, Korea University) ;
  • Jang, Byungkoog (High Temperature Materials Unit, National Institute for Materials Science) ;
  • Oh, Yoonsuk (Korea Institute of Ceramic Engineering and Technology)
  • 박찬영 (한국세라믹기술원 엔지니어링세라믹센터) ;
  • 양영환 (한국세라믹기술원 엔지니어링세라믹센터) ;
  • 김성원 (한국세라믹기술원 엔지니어링세라믹센터) ;
  • 이성민 (한국세라믹기술원 엔지니어링세라믹센터) ;
  • 김형태 (한국세라믹기술원 엔지니어링세라믹센터) ;
  • 임대순 (고려대학교 신소재공학과) ;
  • 장병국 (물질 재료 연구기구 고온 재료 유니트) ;
  • 오윤석 (한국세라믹기술원 엔지니어링세라믹센터)
  • Received : 2013.11.20
  • Accepted : 2013.12.13
  • Published : 2013.12.28
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Abstract

4 mol% Yttria-stabilized zirconia (4YSZ) coatings with $200{\mu}m$ thick are fabricated by Electron Beam Physical Vapor Deposition (EB-PVD) for thermal barrier coating (TBC). $150{\mu}m$ of NiCrAlY based bond coat is prepared by conventional APS (Air Plasma Spray) method on the NiCrCoAl alloy substrate before deposition of top coating. 4 mol% YSZ top coating shows typical tetragonal phase and columnar structure due to vapor phase deposition process. The adhesion strength of coating is measured about 40 MPa. There is no delamination or cracking of coatings after thermal cyclic fatigue and shock test at $850^{\circ}C$.

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