Sinterable aluminum nitride composition, sintered body from...

Details Sinterable aluminum nitride composition, sintered body from... Sinterable aluminum nitride composition, sintered body from...

C - Chemistry, Metallurgy

04

B

261/1, 25/141

C04B 35/58 (2006.01) C04B 35/581 (2006.01)

Patent

CA 1262149

Abstract of the Disclosure: A process for producing a sintered body of aluminum nitride, which comprises (1) forming a raw molded article from a homo- geneous mixture of (A) a fine powder of aluminum nitride, and (B) a sintering aid composed substantially of (a) at least one halogen compound of at least one metal selected from the group consisting of alkaline earth metals, lanthanum group metals and yttrium, and (b) at least one halogen-free compound of at least one metal selected from the group consisting of alkaline earth metals, lanthanum group metals and yttrium: and (2) sintering the raw molded article at a tem- perature of 1600 to 2100°C in a non-oxidizing atmosphere. A sintered body having a high thermal conductivity and a high density of at least 3.2 g/cm3 is prepared by the process.

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