Process of producing aluminum and titanium nitrides

Details Process of producing aluminum and titanium nitrides Process of producing aluminum and titanium nitrides

C - Chemistry, Metallurgy

01

B

23/222, 23/223

C01B 21/076 (2006.01) C01B 21/072 (2006.01) C30B 25/00 (2006.01)

Patent

CA 1329461

- 1 - Abstract: The invention relates to a process of producing nitrides of aluminum and titanium. The process involves producing a uniform dispersion of microfine particles of the corresponding metal oxide in an infusible polymer, carbonizing the resulting dispersion in a non-oxidizing atmosphere and heating the carbonized product in a nitro- gen atmosphere at high temperature to cause the oxide to react with the carbon and nitrogen to form the nitride. Before carbonization, however, the dispersion is formed into shapes in which none of the oxide particles is more than about 2.5 mm from an external surface and the shapes are loosely packed in a reactor. The process can achieve a good conversion of the oxide to the nitride to yield a product of high purity and small particle size.

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