Abstract : Fully dense (97%) aluminium nitride obtained by pressureless sintering with CaO additive (1wt%) has been studied in water vapour in the range 1300-1450°C. The oxidation resistance is similar to that in oxygen, though the hydrogen produced at the inner interface (AlN-oxide) during the reaction opens the microstructure of the scale products. As a consequence, kinetics are controlled by a linear mechanism with an activation energy of 55 Kcal/Mole probably in connection with the break of Al-N bonds (54 Kcal/Mole).
https://hal-unilim.archives-ouvertes.fr/hal-01878369
Contributeur : Françoise Nardou
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Soumis le : vendredi 21 septembre 2018 - 03:25:36
Dernière modification le : samedi 22 septembre 2018 - 01:15:04
Said Yefsah, Michel Billy, Jean Jarrige, Jacques Mexmain, Françoise Nardou, et al.. Comportement dans la vapeur d'eau à haute température du nitrure d'aluminium fritté.. Annales de Chimie - Science des Matériaux, Lavoisier, 1985, 10, pp.79. ⟨hal-01878369⟩
