Journal of the Korean institute of surface engineering (한국표면공학회지)

The Korean Institute of Surface Engineering (한국표면공학회)
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Effect of V on High Temperature Oxidation of TiAl Alloy

TiAl합금의 고온산화에 미치는 V효과

  • ;
  • Morihiko Nakamura (Materials Analysis Station, National Institute for Materials Science) ;
  • 장유동 (성균관대학교 신소재공학과) ;
  • ;
  • 이동복 (성균관대학교 신소재공학과)
  • Published : 2003.08.01
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Abstract

The high-temperature oxidation behavior of Ti39Al-10V alloy that consisted primarily of $\beta$-Ti, ${\gamma}$-TiAl, and $\alpha_2$ $-Ti_3$Al phases was studied. The relatively thick and porous oxide scales formed consisted primarily of an outermost, thin TiO$_2$ layer, and an outer, thin $Al_2$$O_3$-rich layer, and an inner, very thick (TiO$_2$, $Al_2$$O_3$) mixed layer. Vanadium was present uniformly throughout the oxide scale. The formation and subsequent evaporation of V-oxides such as VO, $VO_2$, and $V_2$O$_{5}$ deteriorated oxidation resistance and scale adherence of the TiAl alloy significantly.y.

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References

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