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	Preparation and flame ablation/oxidation behavior of ZrB2/SiC ultra-high temperature ceramic composites
	Wang, Chang-An ; Wang, Hailong ; Huang, Yong ; Fang, Daining
	2010-05-10 ; 2010-05-10 ; OCT 22-26, 2006
会议名称	Composite Materials V ; 5th China Cross-Strait Conference on Composite Materials ; Shanghai, PEOPLES R CHINA ; Web of Science
关键词	ZrB2/SiC UHTC mechanical properties flame ablation ZIRCONIUM DIBORIDE MICROSTRUCTURE OXIDATION Materials Science, Ceramics Materials Science, Composites
中文摘要	ZrB2/SiC ceramic composites reinforced by nano-SiC whiskers and SiC particles have been prepared by hot-pressing at 1950 degrees C for 1hr under 20 MPa pressure in flow argon atmosphere. Effects of SiC addition on microstructure, mechanical properties and thermal ablation/oxidation behavior of ZrB2/SiC composites were investigated. The results showed that the addition of SiC effectively improved the densification of ZrB2/SiC composites and almost full dense ZrB2/SiC composites were obtained when the amount of SiC increased up to 20 vol%. Flexural strength and fracture toughness of the ZrB2/SiC composites were also enhanced; the maximum strength and toughness reached 600 MPa and 8.81 MPa center dot m(1/2) at SiC additions of 20 vol % and 30 vol%, respectively. The composites possessed good resistance to flame ablation and could keep the whole shape without distinct peeling or cracking after flame ablation by oxyacetylene flame for 3 mins. The more SiC added, the better resistance to flame ablation the composites displayed.
会议录出版者	TRANS TECH PUBLICATIONS LTD ; STAFA-ZURICH ; LAUBLSRUTISTR 24, CH-8717 STAFA-ZURICH, SWITZERLAND
语种	英语 ; 英语
内容类型	会议论文
源URL	[http://hdl.handle.net/123456789/17976]
专题	清华大学
推荐引用方式 GB/T 7714	Wang, Chang-An,Wang, Hailong,Huang, Yong,et al. Preparation and flame ablation/oxidation behavior of ZrB2/SiC ultra-high temperature ceramic composites[C]. 见:Composite Materials V, 5th China Cross-Strait Conference on Composite Materials, Shanghai, PEOPLES R CHINA, Web of Science.

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