| 简介 |
[Problem] To provide a method of producing aluminum nitride that has high conducting property and can be excellently filled and is useful as a filler for heat-radiating materials, and an aluminum nitride powder obtained by the same method.
[Means for Solution] An aluminum nitride powder is produced by reducing and nitriding : an alumina powder or a hydrated alumina powder having a primary grain size of 0.001 to 6 μm; anda powder of a compound containing a rare earth metal element and having an average grain size in a range of 2 μm to 80 μm, the average grain size being not less than 6 times as great as the primary grain size of the alumina powder or the hydrated alumina powder; in the presence of a carbon powder at a temperature of 1620° C. to 1900° C. for not less than 2 hours. |
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