C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 21/072 (2006.01)
Patent
CA 2666410
The invention relates to a process for fabricating aluminium nitride in which a multilayer structure comprising aluminium-based laminated products are prepared by stacking or winding them and said multilayer structure is heated in a nitrogen-containing atmosphere, most of the nitriding taking place during a phase in which the temperature of the nitrogen-containing atmosphere is maintained between 400°C and 660°C. The invention makes it possible to obtain aluminium nitride by an economic process that requires neither the use of aluminium powder as raw material nor the use of very high temperatures. The aluminium nitride obtained comprises particles the microscopic structure of which is laminated.
L'invention concerne un procédé de fabrication de nitrure d'aluminium dans lequel on prépare par empilement ou par enroulement une structure multicouche comprenant des produits laminés à base d'aluminium et on la chauffe sous une atmosphère azotée, la majorité de la nitruration se produisant au cours d'une phase dans laquelle la température de l'atmosphère azotée est maintenue entre 400 °C et 660 °C. L'invention permet d'obtenir du nitrure d'aluminium par un procédé économique ne nécessitant ni l'utilisation de poudre d'aluminium comme matière première, ni l'utilisation de très hautes températures. Le nitrure d'aluminium obtenu comprend des particules dont la structure microscopique est stratifiée.
Boehm Matthieu
Butruille Jean-Remi
Dessainjean Alexandre
Alcan International Limited
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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