| 纳米Si-C-N粒子增强Si3N4 复合材料的结构与性能 |
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| 引用本文： | 周新贵,张长瑞,周安郴,刘宪明,陈大明,彭应国. 纳米Si-C-N粒子增强Si3N4 复合材料的结构与性能[J]. 国防科技大学学报, 1999, 21(3): 38-40 |
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| 作者姓名： | 周新贵 张长瑞 周安郴 刘宪明 陈大明 彭应国 |
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| 作者单位： | 国防科技大学材料工程与应用化学系，北京航空材料研究院先进复合材料国防科技重点实验室 |
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| 摘 要： | 本文用Ｓｉ－Ｃ－Ｎ纳米微粉做增强相，Ｓｉ３Ｎ４微粉为基相，采用热压的方法制备了ＳｉＣｐ／Ｓｉ３Ｎ４纳米复相陶瓷，所得的ＳｉＣｐ／Ｓｉ３Ｎ４复合材料的室温弯曲强度为８７８．５ＭＰａ，断裂韧性达１１．９６ＭＰａｍ１／２，同时应用扫描电镜（ＳＥＭ）、高分辨透射电镜（ＨＲＴＥＭ）对其结构进行了观察，讨论了结构与性能之间的关系。
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| 关 键 词： | Si-C-N纳米微粉，热压，SiCp／Si_3N_4，结构 |
| 收稿时间： | 1998-08-12 |
The Structure and Property of the Nanometer Si-C-N Reinforced Si3N4 Composites |
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| Zhou Xingui,Zhang Changrui,Zhou Anchen,Liu Xianming,Daming Chen and Yingguo Pen. The Structure and Property of the Nanometer Si-C-N Reinforced Si3N4 Composites[J]. Journal of National University of Defense Technology, 1999, 21(3): 38-40 |
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| Authors: | Zhou Xingui Zhang Changrui Zhou Anchen Liu Xianming Daming Chen Yingguo Pen |
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| Affiliation: | 1.Department of Materials Engineering and Applied Chemistry, NUDT, Changsha, 410073;1.Department of Materials Engineering and Applied Chemistry, NUDT, Changsha, 410073;1.Department of Materials Engineering and Applied Chemistry, NUDT, Changsha, 410073;1.Department of Materials Engineering and Applied Chemistry, NUDT, Changsha, 410073;2.National Key Laboratory of Advanced Composite, Beijing Institute of Aeronautical Materials, Beijing 100083;2.National Key Laboratory of Advanced Composite, Beijing Institute of Aeronautical Materials, Beijing 100083 |
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| Abstract: | Nanometer composites are prepared by hot pressing sintering method in the paper, using nanometer Si-C-N particles as reinforce phase, Si 3N 4 as matrix phase, the bending strength of the materials reaches 878 5MPa and the fracture toughness reaches to 11 96 MPam 1/2 The hot pressed samples structure is characterized by scanning electron microscopy (SEM) and high resolution transmission electron microscopy (HRTEM) at the same time, the relationship between the structure and the property is discussed. |
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| Keywords: | Si-C-N nanometer particle hot pressing SiCp/Si 3N 4 structure |
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