| 摘要 |
PURPOSE: To obtain silicon nitride sintered compact having high mechanical strength and a few volume shrinkage amount by a reaction sintering method. CONSTITUTION: A mixture comprising silicon powder or mixed powder of silicon with silicon nitride as a main raw material, yttrium oxide and alumina as sintering auxiliaries of silicon nitride and a compound containing at least one kind of tantalum, vanadium and niobium is formed and sintered to provide the objective silicon nitride having high-temperature strength. |
