Method and apparatus for preparing aluminum nitride

Details Method and apparatus for preparing aluminum nitride Method and apparatus for preparing aluminum nitride

2006-03-14

2006-03-14

Langel, Wayne A. (Department: 1754)

Chemistry of inorganic compounds

Nitrogen or compound thereof

Binary compound

Reexamination Certificate

active

07011804

ABSTRACT:
A method and an apparatus for preparing aluminum nitride are disclosed. The method for preparing aluminum nitride is first to prepare a reactant-containing body filled with admixtures of aluminum powder, a diluent (aluminum nitride powder) and nitrogen-containing solid compound, the reactant-containing body having an ignition portion, a propagating portion, a sustaining portion and an ending portion. Thereafter, the reactant-containing body is placed on a base having through holes in a reaction chamber, and preheated to a predetermined temperature for a predetermined period of time. Then, a re-circulating nitrogen gas is introduced through the reactant-containing body, and coolant is re-circulated between an inner wall and an outer wall of the reaction chamber, and then the ignition portion is ignited to perform a combustion synthesis process, thereby preparing the aluminum nitride, thereby preparing the aluminum nitride. The apparatus for preparing aluminum nitride comprises a reaction chamber having an inner wall and an outer wall, wherein a coolant is re-circulated between the inner wall and the outer wall; a preheating device; a nitrogen re-circulation system; and an igniting device.

REFERENCES:
patent: 4877759 (1989-10-01), Holt et al.
patent: 5460794 (1995-10-01), Chung et al.
patent: 5693305 (1997-12-01), Revankar et al.
patent: 5846508 (1998-12-01), Chung et al.
patent: 6423287 (2002-07-01), Chung et al.
patent: 6482384 (2002-11-01), Chung et al.
patent: 2003/0185740 (2003-10-01), Chung et al.
patent: 63-274605 (1988-11-01), None
“Preparation of Mixed Ultrafine (AI+AIN) Powders and Their Nitridation” by Uda et al; Physical Chemistry of Powder Metals Production; The Minerals, Metals & Materials Society (1989), no month.
“Combustion Synthesis Using Microwave Energy” by Clark et al; Ceram. Eng. Sci Proc. 11[9-10], pp. 1729-1742 (1990), no month.
“New Ceramic Processing Approaches Using Combustion Synthesis Under Gas Pressure” by Miyamoto; Ceramic Bulletin, vol. 69, No. 4, pp. 686-690 (1990), no month.
“Aluminum Nitride, a Refractory for Aluminum for 2000” by Long et al; Journal of American Ceramic Society, vol. 42, No. 2, pp. 53-59 (Feb. 1, 1959).
“Comprehensive Treatise On Inorganic and Theoretical Chemistry” by Mellor; vol. VIII, Nitrogrn and Phosphorus. Longmans, Green and Co., New York, pp. 111-112 (1928), no month.

Affiliated with

Also associated with

Rating

Method and apparatus for preparing aluminum nitride does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for preparing aluminum nitride, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for preparing aluminum nitride will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3588712