Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Influence of Subsurface Layer on the Indentation Damage Behavior of YSZ Thermal Barrier Coating Layers Deposited by Electron Beam Physical Vapor Deposition

전자 빔 물리적 증착(EB-PVD)법으로 코팅된 YSZ 열차폐층의 압흔손상 거동에 대한 하부층의 영향

  • Heo, Yong-Suk (School of Mechanical and Automotive Engineering, Kookmin University) ;
  • Park, Sang-Hyun (School of Mechanical and Automotive Engineering, Kookmin University) ;
  • Han, In-Sub (Convergence Materials Research Center, Korea Institute of Energy Research) ;
  • Woo, Sang-Kuk (Convergence Materials Research Center, Korea Institute of Energy Research) ;
  • Jung, Yeon-Gil (School of Nano & Advanced Materials Engineering, Changwon National University) ;
  • Paik, Un-Gyu (Division of Advanced Materials Science Engineering, Hanyang University) ;
  • Lee, Kee-Sung (School of Mechanical and Automotive Engineering, Kookmin University)
  • 허용석 (국민대학교 기계자동차공학부) ;
  • 박상현 (국민대학교 기계자동차공학부) ;
  • 한인섭 (한국에너지기술연구원 융복합재료연구센터) ;
  • 우상국 (한국에너지기술연구원 융복합재료연구센터) ;
  • 정연길 (창원대학교 나노신소재공학부) ;
  • 백운규 (한양대학교 신소재공학부) ;
  • 이기성 (국민대학교 기계자동차공학부)
  • Published : 2008.09.30
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Abstract

The thermal barrier coating must withstand erosion when subjected to flowing gas and should also maintain good stability and mechanical properties while it must also protect the turbine component from high temperature, hot corrosion, creep, and oxidation during operation. In this study we investigated the influence of subsurface layer, $Al_2O_3$ or NiCrCoAIY bond coat layer, on the indentation damage behavior of YSZ thermal barrier coating layers deposited by electron beam physical vapor deposition (EB-PVD). The bond coat is deposited using different process such as air plasma spray (APS) or spray of high velocity oxygen fuel (HVOF) and the thickness is varied. Hertzian indentation technique is used to induce micro damages on the coated layer. The stress-strain behaviors are characterized by results of the indentation tests.

Keywords

References

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