| 摘要 |
PROBLEM TO BE SOLVED: To provide aluminum nitride powder with a uncrushed shape which exhibits excellent high thermal conductivity as a filler for a heat radiation member, and can increase an amount of filling, to provide a production method therefor, to provide a highly thermal conductive resin composition, and to provide a heat radiation member consisting of a molding, in particular, of a silicone resin composition thereof. SOLUTION: The aluminum nitride powder has a mean grain diameter of 20 to 50μm, and an oxygen content of <=0.6 mass%, and in which the mean half-value width of the three diffraction peaks in the (100) plane, (002) plane, and (101) plane in Miller indences is <=0.095 deg.. The raw material of aluminum nitride powder having a mean grain diameter of 15 to 50μm, and in which the ratio of fine powder of <=3μm is <=10 mass% is charged to a vessel made of boron nitride, and, heating is performed thereto at >=1,900 deg.C in a reducing atmosphere to reduce the content of oxygen in the raw material of aluminum nitride powder, and to increase the crystallinity thereof, so that the aluminum nitride powder is produced. The resin composition contains the aluminum nitride powder, and the heat radiation member of electronic equipment consists of the resin composition.
|
