Ceramic composite and process for preparation thereof

Details Ceramic composite and process for preparation thereof Ceramic composite and process for preparation thereof

1989-07-05

1990-10-02

Group, Karl

Compositions: ceramic

Ceramic compositions

Refractory

501 96, 264 65, 264 66, C04B 3558

Patent

active

049607340

ABSTRACT:
Disclosed is a ceramic composite consisting essentially of hexagonal boron nitride (h-BN), aluminum nitride and, if any, unavoidably formed aluminum oxynitride (AlON), and a sintering aid and/or a reaction product of the sintering aid with the above-mentioned components (h-BN, AlN and AlON), in which the total amount of the sintering aid and the reaction product is 0.01 to 5 parts by weight per 100 parts by weight of the sum of h-BN, AlN and AlON. This sintered body comprises AlN and AlON in a total amount of 45 to 5% by weight with 55 to 95% by weight of h-BN. Alternatively, this sintered body comprises AlN and AlON in a total amount of 80 to 5% by weight with 20 to 95% by weight of h-BN, the degree of anisotropy of the thermal conductivity of the sintered body (the ratio of the maximum thermal conductivity to the minimum thermal conductivity, the direction of the maximum thermal conductivity being perpendicular to the direction of the minimum thermal conductivity) being at least 2.

REFERENCES:
patent: 3854967 (1974-12-01), Reinmuth
patent: 4642298 (1987-02-01), Kuramoto et al.
patent: 4666873 (1987-05-01), Morris, Jr. et al.
J. W. Maccawley et al., Progress in Nitrogen Ceramics, p. 111 (1983).
R. W. Nurse et al., trans. Brit. Ceram. Soc., 64(9), 416 (1965).
Electronic Ceramics, vol. 1, 17, No. 84, p. 68 (1986).
Toshikazu Sakai, Journal of the Ceramic Society of Japan, No. 86, (3) p. 125 (1978).

Affiliated with

Also associated with

Rating

Ceramic composite and process for preparation thereof does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ceramic composite and process for preparation thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ceramic composite and process for preparation thereof will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-292383