β-seed 첨가량 변화에 따른 질화반응 Si₃N₄의 특성변화 = Effect of β- Si₃N₄seed particles on the property of reaction-bonded Si₃N₄

다국어 초록 (Multilingual Abstract)

The effect of seeding on microstructure development and mechanical properties of reaction-bonded silicon nitride was investigated by the use of β-Si3N4 particles. The seeding of an appropriate amount of β- Si3N4 particles gave rise to the promotion of density and the resulting increase of fracture strength and hardness. And also, fracture toughness increased due to the development of elongated grains. On the other hand, addition of large amount of seed particles showed lower strength and facture toughness owing to the coalescence of large elongated grains. By seeding of 2wt% β- Si3N4 particles on Si powders of 7 μm, high fracture strength of 1100MPa and fracture toughness of 7.2MPa·m½ were obtained in reaction-bonded silicon nitride ceramics.

목차 (Table of Contents)

• 1.서 론
• 2.실험방법
• 3.결과 및 고찰
• 4.결 론
• 참고문헌
• 〈Abstract〉