| Effects of precoating and calcination on microstructure of 3D silica fiber reinforced silicon nitride based composites |
| |
| 作者姓名： | 齐共金 张长瑞 胡海峰 |
| |
| 作者单位： | State Key Laboratory of Advanced Ceramic Fibers and Composites College of Aerospace and Materials Engineering National University of Defense Tec hnology Changsha 410073 China，State Key Laboratory of Advanced Ceramic Fibers and Composites College of Aerospace and Materials Engineering National University of Defense Tec hnology Changsha 410073 China，State Key Laboratory of Advanced Ceramic Fibers and Composites College of Aerospace and Materials Engineering National University of Defense Tec hnology Changsha 410073 China |
| |
| 摘 要： | 1 Introduction Continuous fiber reinforced ceramic matrix composites, such as C/SiC, C/Si-C-N, C/Si-O-C and SiC/SiC systems1?5], have received considerable attention because of their excellent thermal stability, light mass and high toughness, etc. Among…
|
| 关 键 词： | 石英光纤 预涂层 聚合体 氮化硅 复合材料 显微结构 |
| 收稿时间： | 2005-10-17 |
| 修稿时间： | 2006-01-23 |
Effects of precoating and calcination on microstructure of 3D silica fiber reinforced silicon nitride based composites |
| |
| QI Gong-jin,ZHANG Chang-rui,HU Hai-feng.Effects of precoating and calcination on microstructure of 3D silica fiber reinforced silicon nitride based composites[J].Transactions of Nonferrous Metals Society of China,2006,16(4):824-827. |
| |
| Authors: | QI Gong-jin ZHANG Chang-rui HU Hai-feng |
| |
| Affiliation: | 1. National Institute of Materials Physics, Atomistilor 105bis, 077125 M?gurele-Ilfov, Romania;2. University of Bucharest, Faculty of Physics, Atomistilor 405, 077125 M?gurele-Ilfov, Romania |
| |
| Abstract: | Three-dimensional silica fiber reinforced silicon nitride based composites were fabricated by preceramic polymer infiltration and pyrolysis method using perhydropolysilazane as a precursor. The effects of precoating and high temperature calcination on the microstructures of the composites were investigated by scanning electron microscopy. For the composite without a precoating, the fracture surface is plain, and the fiber/matrix interfaces become very unclear after calcination at 1 600 °C due to intense interfacial reactions. The composite with a precoating shows tough fracture surface with distinct fiber pull-outs, and the fiber/matrix interfaces are still clear after calcination at 1 600 °C. It is the appropriate precoating process that contributes to the good interfacial microstructures for the composite. |
| |
| Keywords: | silica fiber precoating preceramic polymer silicon nitride based composites microstructure |
| 本文献已被 CNKI 维普 万方数据 ScienceDirect 等数据库收录！ |
