Preparation and fracture behavior of carbon fiber SiC composites by multiple impregnation and pyrolysis of polycarbosilane

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	Preparation and fracture behavior of carbon fiber SiC composites by multiple impregnation and pyrolysis of polycarbosilane
	G. B. Zheng; H. Sano; Y. Uchiyama; K. Kobayashi; K. Suzuki; H. M. Cheng
	1998
发表期刊	Journal of the Ceramic Society of Japan
ISSN	0914-5400
卷号	106 期号:12 页码:1155-1161
摘要	Three types of carbon fibers, PAN-based HSCF, pitch-based HMCF with low graphitization degree, and pitch-based CF70 with high graphitization degree, were used to prepare unidirectional carbon fiber reinforced SiC composites (CF/SiC) by multiple impregnation of polycarbosilane and subsequent pyrolysis at 1200 degrees C for 5-9 times. The experimental results showed that pyrolytic product of polycarbosilane at 1200 degrees C in Na consisted of beta-SiC phase in a nearly amorphous state and impurity oxygen. The impregnation behavior of polycarbosilane for CF70/SiC was different from those of HSCF/SiC and HMCF/SiC. CF70/SiC showed a flexural strength of 700 MPa, which was markedly higher than those of HSCF/SiC and HMCF/SiC. Moreover, CF70/SiC exhibited non-catastrophic fracture behavior, whereas HSCF/SiC and HMCF/SiC showed brittle fracture behavior. Scanning electron microscope (SEM) and transmission electron microscope (TEM) observation of these composites clarified that HSCF/SiC and HMCF/SiC had a strong fiber/matrix interface bonding, whereas CF70/SiC had a weak interface bonding. It was concluded that highly graphitized CF70 was the most suitable reinforcement for the CF/SiC composite.
部门归属	nagasaki univ, fac engn, dept mat sci & engn, nagasaki 8528521, japan. acad sinica, inst met res, shenyang 110015, peoples r china.;zheng, gb (reprint author), nagasaki univ, fac engn, dept mat sci & engn, 1-14 bunkyo machi, nagasaki 8528521, japan
关键词	Carbon Fiber Silicon Carbide Polycarbosilane Flexural Strength Impregnation Composite Matrix Composites Mechanical-properties Repeated Infiltration Silicon-carbide
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WOS记录号	WOS:000077651700001
引用统计	被引频次：20[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/37899
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	G. B. Zheng,H. Sano,Y. Uchiyama,et al. Preparation and fracture behavior of carbon fiber SiC composites by multiple impregnation and pyrolysis of polycarbosilane[J]. Journal of the Ceramic Society of Japan,1998,106(12):1155-1161.
APA	G. B. Zheng,H. Sano,Y. Uchiyama,K. Kobayashi,K. Suzuki,&H. M. Cheng.(1998).Preparation and fracture behavior of carbon fiber SiC composites by multiple impregnation and pyrolysis of polycarbosilane.Journal of the Ceramic Society of Japan,106(12),1155-1161.
MLA	G. B. Zheng,et al."Preparation and fracture behavior of carbon fiber SiC composites by multiple impregnation and pyrolysis of polycarbosilane".Journal of the Ceramic Society of Japan 106.12(1998):1155-1161.