Process for producing sinterable crystalline aluminum...

Details Process for producing sinterable crystalline aluminum... Process for producing sinterable crystalline aluminum...

C - Chemistry, Metallurgy

01

B

25/134, 23/223

C01B 21/072 (2006.01) C04B 35/58 (2006.01) C04B 35/64 (2006.01)

Patent

CA 2008645

Sinterable crystalline aluminum nitride powder is produced by reacting alkyl aluminum with ammonia in a gas phase to produce an amorphous aluminum nitride presursor powder, and subjecting the precursor powder to a primary calcination in a reducing gas containing at least 20 % (vol.) ammonia at 600°C to 1300°C, and then subjecting the calcined aluminum nitride to a secondary calination in an inert gas or a reducing gas at 1400-1750°C.

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