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Synthèse et propriétés de monocristaux, de poudres, films minces ou hétérostructures

Etudes à l'interface avec la matière biologique

> LMGP_ Recherche > Nano

Publication by Thierry Ouisse

Published on February 23, 2022
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Communique from February 23, 2022 to April 27, 2022

The article entitled "Towards a better understanding of the high-temperature oxidation of MAX phase Cr2AlC" has been published in Journal of the European Ceramic Society.

JECSZuber2022

JECSZuber2022

Here you will find the article by Thierry Ouisse:
"High-temperature oxidation of bulk single crystal, fine and coarse grained polycrystals of Cr2AlC has been performed from 800 °C to 1500 °C. In the temperature range T = [800;1400] °C, an α-Al2O3 scale with a Cr7C3 subscale are in-situ formed independently of the initial microstructure on top of the bulk Cr2AlC. CALPHAD calculations were performed to explain the formation of Cr7C3 instead of the expected mixture of carbides, indicating a favourable driving force for Cr7C3 formation. The kinetic study of the oxidation is consistent with previous works with an activation energy of about 400 kJ.mol−1. Oxidizing for a longer time (1000 h) or at higher temperature (1500 °C) leads to the formation of chromia in the former alumina scale, which correspond to the calculated equilibrium phases."
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Date of update February 23, 2022

  • Tutelle CNRS
  • Tutelle Grenoble INP
Université Grenoble Alpes