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Investigation of the Fluorine Microalloying Effect in the Oxidation of TiAl at 900°C in Air

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Abstract

High-temperature oxidation resistance of gamma titanium aluminides can be achieved by the formation of a continuous scale of slowly growing Al2O3. The formation of such a scale was favored by the addition of small amounts of fluorine. It is shown that fluorine can have a beneficial effect on oxidation resistance in a certain F-range which is quantified by thermodynamic calculations and by experimental investigations. It is assumed that the F-effect offers a significant potential for improvement of the oxidation resistance of technological TiAl alloys.

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Authors and Affiliations

  1. Karl Winnacker Institut der Dechema e.V., Theodor-Heuss-Allee 25, D-60486, Frankfurt am Main, Germany

    H.-E. Zschau, V. Gauthier, G. Schumacher, F. Dettenwanger & M. Schütze

  2. Institut für Kernphysik der Johann Wolfgang Goethe-Universität Frankfurt am Main, August-Euler-Str. 6, D-60486 Frankfurt am Main, Germany

    H. Baumann & K. Bethge

  3. National Research Council Canada, Institute for Microstructural Sciences, Montreal Road Building M-50, Ottawa, ON K1A 0R6, Canada

    M. Graham

Authors
  1. H.-E. Zschau
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  2. V. Gauthier
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  3. G. Schumacher
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  4. F. Dettenwanger
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  5. M. Schütze
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  6. H. Baumann
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  7. K. Bethge
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  8. M. Graham
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Zschau, HE., Gauthier, V., Schumacher, G. et al. Investigation of the Fluorine Microalloying Effect in the Oxidation of TiAl at 900°C in Air. Oxidation of Metals 59, 183–200 (2003). https://doi.org/10.1023/A:1023030302118

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  • DOI: https://doi.org/10.1023/A:1023030302118

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