| 摘要 |
PURPOSE:To obtain a silicon nitride-based ceramic composite improved in fracture toughness while retaining high-temperature strength. CONSTITUTION:This silicon nitride-based ceramic composite contains 0.01-1.0vol% of SiC in a dispersed state in a silicon nitride-based ceramic and the composite is composed of columnar particles having 5-50mum long diameter and 3-5 aspect ratio and isometric particles having >=5mum diameter. |
