Proceedings of the KSME Conference (대한기계학회:학술대회논문집)

The Korean Society of Mechanical Engineers (대한기계학회)
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Deformation of Thermally Grown Oxide Due to Thermal Cycling

고온생성 산화막의 열피로에 의한 변형

  • 이상신 (전남대학교 대학원 기계공학과) ;
  • 선신규 (전남대학교 대학원 기계공학과) ;
  • 강기주 (전남대학교 공과대학 기계시스템공학부)
  • Published : 2004.04.28
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Abstract

Thermal barrier systems are susceptible to instability of the thermally grown oxide(TGO) at the interface between the bond coat(BC) and the thermal barrier coating(TBC). The instabilities have been linked to thermal cycling and initial geometrical imperfections, as well as to misfit strains due to oxide growth and expansion misfit. In this work, deformation of TGO near a surface groove due to thermal cycling has been observed at high temperatures, $1100^{circ}C$, $1150^{circ}C$, $1200^{circ}C$. The effect of peak temperature and the thickness of substrate are presented.

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