Aluminum nitride densification with minimal grain growth

Details Aluminum nitride densification with minimal grain growth Aluminum nitride densification with minimal grain growth

C - Chemistry, Metallurgy

04

B

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

Patent

CA 2103048

2103048 9301147 PCTABS00019 A method is disclosed of forming a dense, high thermal conductivity aluminum nitride article. A powder compact includes aluminum nitride powder and a densifying composition. The densifying composition includes YF3, Al2O3 and either Y2O3 or CaF2. The powder compact is heated to a temperature of less than 1650 ·C, in a suitable atmosphere and for a time sufficient, to cause densification of the powder compact without a significant increase of the grain size of the powder compact, thereby forming a dense, high thermal conductivity aluminum nitride article.

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