| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for easily producing aluminum nitride sintered granule which has high thermal conductivity and excellent filling property in a resin or the like, has a particle diameter of several μm to several tens μm, and is useful as a filler for a heat-radiating material such as a heat-radiating resin, grease, adhesive and coating material.SOLUTION: Aluminum nitride sintered granule is obtained by reducing and nitriding porous aluminum granule, which is obtained by spraying and drying alumina and/or alumina hydrate powder and has a specific surface area of 2 to 500 m/g, in the presence of a reducing agent and under nitrogen circulation to obtain porous aluminum nitride granule, and then firing the porous aluminum nitride granule to sinter. |
