Compositions: ceramic – Ceramic compositions – Refractory
Patent
1987-06-03
1988-10-18
Dixon, Jr., William R.
Compositions: ceramic
Ceramic compositions
Refractory
501 98, 501153, 264 65, 264 66, C04B 3558, C04B 3564
Patent
active
047787783
ABSTRACT:
Process for producing sintered aluminum nitride bodies, comprising sintering a relatively impure aluminum nitride powder comprising at least 95% by weight aluminum nitride and having no more than 3% bound oxygen content, no more than 0.6% metal or metal compound impurities, and no more than 0.5% silicon or carbon impurities, the sintering being carried out by heating the aluminum nitride body from room temperature to the sintering temperature at a rate of no more than 250.degree. C. per hour; introducing an inert gas containing from 1 to 4% by volume hydrogen until the temperature reaches 1200.degree. C.; continuing to introduce solely an inert gas as the temperature is further increased to the sintering temperature; sintering the body at a sintering temperature of from 1600.degree. to 1900.degree. C.; and cooling the sintered body at a rate of no more than 300.degree. C. per hour.
REFERENCES:
patent: 3108887 (1963-10-01), Lenie et al.
patent: 3930787 (1976-01-01), DeHollander et al.
patent: 4350651 (1982-09-01), Morell et al.
patent: 4547471 (1985-10-01), Huseby et al.
patent: 4618592 (1986-10-01), Kuramoto et al.
Cox Carl V.
Mallia Robert A.
Brunsmon David M.
Dixon Jr. William R.
Keramont Advanced Ceramic Products Corporation
LandOfFree
Process for the production of sintered aluminum nitrides does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for the production of sintered aluminum nitrides, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the production of sintered aluminum nitrides will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1194969