填料组成对气压烧结Si<sub>3</sub>N<sub>4</sub>系陶瓷的影响

填料组成对气压烧结Si₃N₄系陶瓷的影响

摘要: 研究了在气压烧结条件下填料组成对Si₃N₄陶瓷致密化的影响,制造了高密度、高强度的β-Sialon陶瓷材料。结果表明,用Si₃N₄+BN+MgO或Si₃N₄+SiO₂作填料,能有效地抑制Si₃N₄的分解,促进β-Sialon陶瓷的烧结。结合X-ray、SEM分析,探讨了β-Sialon陶瓷的致密化机理。
- Si₃N₄陶瓷 /
- 气压烧结
Abstract: Influence of filler compositions on the densification of Si₃N₄ ceramics under the condition of gas pressure-sintering have been studied and the β-Sialon ceramic materials with high density and high strength have been manufactured. Results show that taking advantages of Si₃N₄+BN+MgO or Si₃N₄+SiO₂ as filler can effectively control the decomposition of Si₃N₄ and promote the sintering of β-Sialon ceramics. Densificating mechanism of β-Sialon has been discussed in combination with X-ray and SEM analysis.
- Si₃N₄ ceramics /
- gas pressure sintering