一种SiC/SixOyCz非连续增强陶瓷基复合材料的制备及性能

原效坤; 许并社

一种SiC/Si_xO_yC_z非连续增强陶瓷基复合材料的制备及性能

原效坤^1,,
许并社²

1.
北京航空航天大学材料科学与工程学院, 北京 100083;
2.
太原理工大学材料科学与工程学院, 太原 030024

基金项目: 国家973项目(2004CB217808); 国家自然科学基金项目(20271037)

详细信息

通讯作者:
原效坤, 讲师, 主要从事结构陶瓷研究 E-mail: prince-of-egypt@163.com

中图分类号: TB332
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出版历程
- 收稿日期: 2006-01-06
- 修回日期: 2006-04-20
- 刊出日期: 2007-02-14

Synthesis and properties of an SiC/Si_xO_yC_z discontinuous reinforced ceramic composite

YUAN Xiaokun^1,,
XU Bingshe²

1.
School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China;
2.
College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China

More Information

Corresponding author:
YUAN Xiaokun

摘要

摘要: 以聚硅氧烷类有机硅树脂YR3370(GE toshiba silicones)裂解生成的无定形Si_xO_yC_z陶瓷为基质, 以0.8μm SiC颗粒为非连续增强介质, 制备了一种SiC/Si_xO_yC_z非连续增强陶瓷基复合材料。含SiC颗粒50%的素坯在99.99%N₂气流中于1100~1300℃下保温1h, 所制备的陶瓷基复合材料密度可达2.27g/cm³, 维氏硬度可达741kg/mm²。通过结构模拟和强度计算分析了SiC/Si_xO_yC_z陶瓷基复合材料的力学性能, 其结构特点是连续的无定形Si_xO_yC_z陶瓷基质包围着分散的作为非连续增强介质的SiC颗粒, 基质与增强介质之间具有合理的热匹配, 并且可以改善单一陶瓷材料的脆性。
- 有机硅树脂 /
- 非连续增强陶瓷基复合材料 /
- 陶瓷连接
Abstract: Using the amorphous Si_xO_yC_z ceramic pyrolyzed from polysiloxane silicon resin YR3370 (GE toshiba silicones) as the matrix, and 0.8μm SiC particle as the discontinuous reinforcement, an SiC/Si_xO_yC_z discontinuous reinforced ceramic composite was prepared. When the biscuit contains 50% of SiC particle and is pyrolyzed in a 99.99% nitrogen flux at 1100~1300℃ for 1h, the ceramic matrix composite has a density of 2.27g/cm³ and a Vickers hardness of 741kg/mm². The mechanics properties of the composite were discussed through structure modeling and strength calculation. The characteristic of the composite structure is that the discontinuous reinforcement SiC particles are wrapped in the continuous amorphous Si_xO_yC_z ceramic matrix, and there is reasonable thermal expansion compatibility between them, which can improve the brittleness of monolithic ceramic materials.
- silicon resin /
- discontinuous reinforced ceramic composite /
- ceramic joining