Process for production of aluminum nitride sintered body

Details Process for production of aluminum nitride sintered body Process for production of aluminum nitride sintered body

1991-01-25

1991-12-31

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

501 96, 501 98, C04B 3558

Patent

active

050769812

ABSTRACT:
A process for producing an aluminum nitride sintered body is disclosed, comprising mixing an aluminum nitride powder with (a) a calcium compound and (b) a copper compound, and, if desired, (c) a yttrium compound as sintering aids; molding the mixture; and sintering the molded article in a non-oxidative atmosphere. The resulting sintered body has a high density (3.10 g/cm.sup.3 or higher) and a high thermal conductivity (110 W/mK or higher) even by sintering at a low temperature (1500.degree. to 2000.degree. C.).

REFERENCES:
patent: 4650777 (1987-05-01), Kurokawa et al.
patent: 4746637 (1988-05-01), Kasori et al.
N. Kuramoto et al., "Transparent ALN Ceramics"; Journal of Materials Science Letters, vol. 13, pp. 471-479; 1984.

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