Method for producing aluminum nitride powder

摘要

A method for producing an aluminum nitride powder includes mixing an alumina powder having an average particle diameter of not more than 5 μm; an eutectic melting agent; and a carbon powder are mixed to obtain a mixture thereof, and reductively nitriding the mixture by firing at a higher temperature than a melting point of the eutectic melting agent, while maintaining a nitrogen ratio within a range of 60 to 85 vol % in an atmosphere of mixed gases of nitrogen and carbon monoxide until a nitriding ratio of the alumina powder reaches at least 50%.

主权项

1. A method for producing an aluminum nitride powder, comprising reductively nitriding an alumina powder, wherein:
the alumina powder having an average particle diameter of not more than 5 μm, an eutectic melting agent, and a carbon powder are mixed to obtain a mixture thereof, and the mixture is reductively nitrided by firing at a higher temperature than a melting point of the eutectic melting agent, while maintaining a nitrogen percentage within a range of 60 to 85 vol % in an atmosphere of mixed gases of nitrogen and carbon monoxide until an aluminum nitride conversion percentage of the alumina powder reaches at least 50%.