Process for producing aluminum nitride

Details Process for producing aluminum nitride Process for producing aluminum nitride

1998-08-21

2000-12-12

Langel, Wayne

Chemistry of inorganic compounds

Nitrogen or compound thereof

Binary compound

C01B 21072

Patent

active

061594393

ABSTRACT:
A process for producing aluminum nitride comprises a step of nitriding directly a mixed powder comprising of, a bulky aluminum powder composed of aluminum or an aluminum alloy powder which occupies 50 to 97% by weight and whose sieve opening of JIS is not less than 210 .mu.m (70 mesh); and a nitriding accelerator powder composed of at least one kind of an aluminum powder and an aluminum alloy powder which occupy the balance of 50 to 3% by weight and whose sieve opening is less than 210 .mu.m (70 mesh); under a nitrogen gas atmosphere of the temperature ranging from 500 to 1000.degree. C. In the present invention, there can be obtained an aluminum nitride which is easy to be crushed by hand by using a mortar.

REFERENCES:
patent: 4522660 (1985-06-01), Suzuki et al.
Ito et al., "Preparation of A1N Powders by Nitriding of Aluminum Chips", Chemical Abstracts #121:130956, vol. 121, No. 2, Jul. 11, 1994, p. 229.
Kudela et al., "Aluminum Nitride by High Pressure Nitriding of Aluminum-Magnesium Alloys in Liquid State", Chemical Abstracts #96:71267, vol. 96, No. 10, Mar. 8, 1982.
Kudela et al., "Study of Nitridation Process of Aluminum-Magnesium Alloys", Chemical Abstracts #92:151469, vol. 92, No. 18, May 5, 1980.
G. Boden et al., "Probleme Bei Der Herstellung Von Nitridischen Keramischen Pulvern", Sprechsaal, vol. 122, No. 3, Jan. 1, 1989, pp. 224-231.
Yasuhiro, "Method for Nitriding Aluminum", Patent Abstracts of Japan, May 30, 1997, vol. 1997, No. 5, JP 09-012308.

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