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Short Term Oxidation of a Ti-46Al-8Nb Alloy at 700°C in Air

Ngnekou, Paul Erve T. and Lafont, Marie-Christine and Senocq, François and Lacaze, Jacques and Viguier, Bernard Short Term Oxidation of a Ti-46Al-8Nb Alloy at 700°C in Air. (2010) Materials Science Forum, vol. 636-637 . pp. 485-490. ISSN 0255-5476

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Official URL: http://dx.doi.org/10.4028/www.scientific.net/MSF.636-637.485

Abstract

Thermogravimetry was used to study the oxidation behaviour of a lamellar Ti46Al8Nb alloy during holding at 700°C in synthetic air. A parabolic plot of the oxidation kinetics shows three different regimes over the total duration (50 h) of the tests corresponding to decreasing values of the parabolic rate constant. The oxide scale was characterized by glancing-angle X-Ray diffraction and transmission electron microscopy. The scale was found to be bi-layered with an outer part that consists of amorphous aluminium rich oxide whilst the inner layer is made of very small cristalites of titania distributed in the same amorphous oxide.

Item Type:Article
Additional Information:Thanks to Trans Tech Publications editor. The definitive version is available at http://www.ttp.net/ The original PDF of the article can be found at Materials Science Forum website : http://www.scientific.net/MSF.636-637.485
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
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Deposited By: Leila Abdelouhab
Deposited On:09 Jun 2011 07:22

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