Simultaneously enhanced toughness and strain tolerance of SiC-based ceramic composite by in-situ formation of VB2particles

doi:10.1016/j.jeurceramsoc.2016.07.017

SIC OpenIR

	Simultaneously enhanced toughness and strain tolerance of SiC-based ceramic composite by in-situ formation of VB2particles
	Li, Yinsheng 1,2; Wu, Haibo 1; Kim, Ha-Neul 2; Liu, Xuejian 1; Huang, Zhengren 1
	2017
Source Publication	Journal of the European Ceramic Society
ISSN	09552219
Volume	37 Issue:1 Pages:399-405
Abstract	SiC-30vol%VB2ceramic composite was pressureless densified at 2150 °C with excess B4C and C as sintering aids after in-situ formation of VB2in SiC matrix. The sintered bulk gained a considerably high fracture toughness of 7.0 ± 0.4 MPa m1/2, which was ∼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 VB2particle 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 ∼59.3% in mechanical strain tolerance (1.29 × 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. © 2016 Elsevier Ltd
DOI	10.1016/j.jeurceramsoc.2016.07.017
EI Accession Number	20163102667158
EI Keywords	Fracture toughness
EI Classification Number	804.2 Inorganic Compounds - 812.1 Ceramics - 933.1.2 Crystal Growth - 951 Materials Science
Citation statistics	Cited Times:3[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.sic.ac.cn/handle/331005/25924
Collection	中国科学院上海硅酸盐研究所
Affiliation	1.Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China; 2.Korea Institute of Materials Science, Gyeongnam, Changwon; 51508, Korea, Republic of
Recommended Citation 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 VB2particles[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 VB2particles.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 VB2particles".Journal of the European Ceramic Society 37.1(2017):399-405.

Files in This Item:
There are no files associated with this item.

If you have any objections to this item, please fill out the form below and the administrator will contact you as soon as possible.
Content:
Email：	*
Institution:
Verification Code:	Refresh

Any comments and suggestions are welcomed.
Title:	*
Content:
Email：	*
Verification Code:	Refresh

中国科学院上海硅酸盐研究所机构知识库