Crystallization behavior of three-dimensional silica fiber reinforced silicon nitride composite

被引:41
作者
Qi, GJ [1 ]
Zhang, CR [1 ]
Hu, HF [1 ]
Cao, F [1 ]
Wang, SQ [1 ]
Jiang, YG [1 ]
Li, B [1 ]
机构
[1] Natl Def Univ, Colol Aerosp & Mat Engn, State Key Lab Ceram Fibers & Composites, Changsha 410073, Peoples R China
关键词
crystallization; composite; nitrides; oxides; silicon oxynitride;
D O I
10.1016/j.jcrysgro.2005.06.039
中图分类号
O7 [晶体学];
学科分类号
0702 ; 070205 ; 0703 ; 080501 ;
摘要
The crystallization behavior of a new type of ceramic matrix composites, three-dimensional silica fiber reinforced silicon nitride matrix composite prepared by perhydropolysilazane infiltration and pyrolysis, was investigated by X-ray diffractometry and Fourier transform infrared spectroscopy. With the post-annealing treatment of the amorphous as-received composite at elevated tempertures of 1400 and 1600 degrees C in nitrogen atmosphere, there was remarkable suppression of the crystallization of polymer-derived silicon nitride ceramic matrix into alpha-Si3N4 and silica fibers into alpha-cristobalite which was probably attributed to the phase of silicon oxynitrides originating from the strong fiber/matrix interfacial chemical reaction. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:293 / 296
页数:4
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