| 摘要 |
A process for preparing an aluminium nitrade powder giving high green and fired density and high green strength bodies, with high thermal conductivity, comprising mixing an aluminium nitride powder with a sintering aid and a grinding aid, said AlN powder having an average particle size below 5 microns and greater than 0.5 microns, a content of Al2O3 + Al metal not greater than 10% by weight calculated as Al, the Al2O3 content being not greater than 5% calculated as Al when Al metal is absent, and a content of other impurities not greater than 4% by weight calculated as elements; milling the mixture obtained in order to homogenize it and to obtain a tap density of at least 1.0 g/cc; and screening the milled mixture using a screen ranging from 1/8 mesh to 200 mesh. |
