| 摘要 |
PURPOSE:To provide heat conductive and dense ceramics, having high heat conductivity and sinterable more readily than conventional ones and a simple method for producing the ceramics. CONSTITUTION:Highly heat conductive ceramics of this invention are characterized by adding a group Ia element of the periodic table or its compound and at least one element of groups IIIa and IIa or its compound to aluminum nitride powder, molding and sintering the resultant mixture and forming the ceramics. The content of the group Ia element of the periodic table contained in the mixture is preferably set at 0.05-3wt.% expressed in terms of the element. On the other hand, the content of at least one element of groups IIIa and IIa is preferably set at 0.5-7wt.% expressed in terms of the element. |
