Method for producing aluminum nitride powder

Details Method for producing aluminum nitride powder Method for producing aluminum nitride powder

C - Chemistry, Metallurgy

01

B

23/223

C01B 21/072 (2006.01)

Patent

CA 1270365

ABSTRACT OF THE DISCLOSURE A method for producing an aluminum nitride powder of superior sinterability of which steps are providing an aqueous boehmite sol having a pH of 1.2 to 4.5, mixing a carbon source material to the sol and drying the mixture. The mixture is sintered in a non-oxidizing atmosphere containing nitrogen or in a nitrogen atmosphere and finally decarbonized to obtain an aluminum nitride powder. The carbon source material is preferably a mixture of an organic carbon source material and a solid carbon powder. A predetermined amount of alpha-alumina may be added to the mixture.

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