| 摘要 |
PURPOSE:To obtain an aluminum nitride sintered body having excellent heat conductivity by firing at a lower firing temp. CONSTITUTION:Ca12Al14O33 powder is obtd. from CaCO3 powder and Al2O3 powder. Aluminum nitride powder is mixed with 1-5wt.% of the Ca12Al14O33 powder, 1-5wt.% CaF2 and an org. binder, This powdery mixture is molded, subjected to binder removing treatment in a nitrogen atmosphere at 800 deg.C for 2hr and fired in a nitrogen atmosphere at 1,600 deg.C for 5hr to obtain an aluminum nitride sintered body. |
