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	Processing and mechanical properties of zirconium diboride-based ceramics prepared by spark plasma sintering
	Wang, Hailong ; Wang, Chang-An ; Yao, Xuefeng ; Fang, Daining
	2010-05-10 ; 2010-05-10
关键词	TITANIUM DIBORIDE SILICON-NITRIDE TEMPERATURE DENSIFICATION ZRB2 MICROSTRUCTURE COMPOSITES BEHAVIOR Materials Science, Ceramics
中文摘要	Zirconium diboride (ZrB2) reinforced by nano-SiC whiskers has been prepared by spark plasma sintering (SPS). Of most interest is the densification of ZrB2-SiCw composites accomplished by SPS at a temperature as low as 1550 degrees C. The relative density of ZrB2-SiCw composites could reach to 97% with an average grain size of 2-3 mu m. Both flexural strength and fracture toughness of the composites were improved with increasing amount of SiCw. Flexural strengths ranged from 416 MPa for monolithic ZrB2 to over 545 MPa for ZrB2-15 vol% SiCw composites. Similarly, fracture toughness also increased from 5.46 MPa center dot m(1/2) to more than 6.81 MPa center dot m(1/2) in the same composition range. The relative density of ZrB2-SiCw composites could be further improved to near 100% by adding some sintering aids such as AlN and Si3N4; however, the effects of different sintering additives on the mechanical properties of the composites were different.
语种	英语 ; 英语
出版者	BLACKWELL PUBLISHING ; OXFORD ; 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/21401]
专题	清华大学
推荐引用方式 GB/T 7714	Wang, Hailong,Wang, Chang-An,Yao, Xuefeng,et al. Processing and mechanical properties of zirconium diboride-based ceramics prepared by spark plasma sintering[J],2010, 2010.
APA	Wang, Hailong,Wang, Chang-An,Yao, Xuefeng,&Fang, Daining.(2010).Processing and mechanical properties of zirconium diboride-based ceramics prepared by spark plasma sintering..
MLA	Wang, Hailong,et al."Processing and mechanical properties of zirconium diboride-based ceramics prepared by spark plasma sintering".(2010).

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