Simultaneously enhanced toughness and strain tolerance of SiC-based ceramic composite by in-situ formation of VB2 particles

CORC > 上海硅酸盐研究所 > 中国科学院上海硅酸盐研究所 > 结构陶瓷与复合材料工程研究中心 > 期刊论文

	Simultaneously enhanced toughness and strain tolerance of SiC-based ceramic composite by in-situ formation of VB2 particles
	Li, Yinsheng 1,2; Wu, Haibo 1; Kim, Ha-Neul 2; Liu, Xuejian 1; Huang, Zhengren 1
刊名	JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
	2017
卷号	37 期号:1 页码:399-405
关键词	Silicon carbide Vanadium diboride Particulate composite Fracture toughness Strain tolerance
英文摘要	SiC-30vol%VB2 ceramic composite was pressureless densified at 2150 degrees C with excess B4C and C as sintering aids after in-situ formation of VB2 in SiC matrix. The sintered bulk gained a considerably high fracture toughness of 7.0 +/- 0.4 MPa m(1/2), which was similar to 2.4 times as high as that of the monolithic SiC ceramic, owing to the existences of weak heterophase boundaries, thermal residual stresses and microcracks. Meanwhile, since the VB2 particle has a lower elastic modulus than SiC and significantly suppressed the grain growth of SiC, the composite exhibited a high flexural strength of 458 +/- 36 MPa and a relatively low Young's modulus of 356 +/- 6 GPa, resulting in an increase of similar to 59.3% in mechanical strain tolerance (1.29 x 10(-3)) compared with that of single-phase SiC ceramic. Besides, the residual stresses and microcracks also induced a lower-than-expected Vickers hardness of 20.8 +/- 0.5 GPa in the composite. (C) 2016 Elsevier Ltd. All rights reserved.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Materials Science, Ceramics
研究领域[WOS]	Materials Science
关键词[WOS]	SILICON-CARBIDE ; SIC-TIB2 COMPOSITES ; MECHANICAL-PROPERTIES ; FRACTURE-TOUGHNESS ; THERMAL-EXPANSION ; METAL BORIDE ; BEHAVIOR ; MICROSTRUCTURE ; MICROCRACKING ; NITRIDE
收录类别	SCI
语种	英语
WOS记录号	WOS:000384852400046
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/22018]
专题	上海硅酸盐研究所_结构陶瓷与复合材料工程研究中心_期刊论文
作者单位	1.Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China 2.Korea Inst Mat Sci, Chang Won 51508, Gyeongnam, South Korea
推荐引用方式 GB/T 7714	Li, Yinsheng,Wu, Haibo,Kim, Ha-Neul,et al. Simultaneously enhanced toughness and strain tolerance of SiC-based ceramic composite by in-situ formation of VB2 particles[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2017,37(1):399-405.
APA	Li, Yinsheng,Wu, Haibo,Kim, Ha-Neul,Liu, Xuejian,&Huang, Zhengren.(2017).Simultaneously enhanced toughness and strain tolerance of SiC-based ceramic composite by in-situ formation of VB2 particles.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,37(1),399-405.
MLA	Li, Yinsheng,et al."Simultaneously enhanced toughness and strain tolerance of SiC-based ceramic composite by in-situ formation of VB2 particles".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 37.1(2017):399-405.