Fabrication and mechanical properties of h-BN based composites containing dual glass phases

doi:10.1016/j.jeurceramsoc.2018.02.035

IMR OpenIR

	Fabrication and mechanical properties of h-BN based composites containing dual glass phases
	Chen, Juanjuan 1,2; Chen, Jixin 1; Zhang, Xi 1,3; He, Minmin 1,2; Li, Meishuan 1
通讯作者	Chen, Jixin(jxchen@imr.ac.cn)
	2018-08-01
发表期刊	JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
ISSN	0955-2219
卷号	38 期号:9 页码:3210-3216
摘要	In this work, h-BN based composites containing amorphous silica and ytterbium silicate glass phases were successfully fabricated by in situ hot pressing process. The powder mixtures of h-BN, Yb2O3, SiO2 and sintering additive (Al2O3) were hot pressed at 1880 C for 1 h under 30 MPa in Ar atmosphere. In the composites, beta-Yb2Si2O7 phase produced from the reaction between Yb2O3 and SiO2 disappears completely and transforms to Yb-Si-Al-O glass when the amount of Al2O3 is >= 15 wt.%. The Vickers hardness, flexural strength, and compressive strength reached the maximum values of 2.38 +/- 0.08 GPa, 337 +/- 22 MPa and 950 +/- 34 MPa, respectively, as 1.5 wt.% Al2O3 was added. The strengthening effects were attributed to the fine spherical microstructure of Yb-Si-Al-O glass particles, strong [AlO4] coordination state, and residual compressive stress in glass phases.
关键词	h-BN Dual glass phases Vitrification Coordination state Strengthening
资助者	National Natural Science Foundation of China
DOI	10.1016/j.jeurceramsoc.2018.02.035
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[50802099] ; National Natural Science Foundation of China[51072201]
WOS研究方向	Materials Science
WOS类目	Materials Science, Ceramics
WOS记录号	WOS:000433014200020
出版者	ELSEVIER SCI LTD
引用统计	被引频次：5[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/321006/128228
专题	中国科学院金属研究所
通讯作者	Chen, Jixin
作者单位	1.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, High Performance Ceram Div, Shenyang 110016, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Xian Golden Mt Ceram Composites Co Ltd, Xian 710065, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Chen, Juanjuan,Chen, Jixin,Zhang, Xi,et al. Fabrication and mechanical properties of h-BN based composites containing dual glass phases[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2018,38(9):3210-3216.
APA	Chen, Juanjuan,Chen, Jixin,Zhang, Xi,He, Minmin,&Li, Meishuan.(2018).Fabrication and mechanical properties of h-BN based composites containing dual glass phases.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,38(9),3210-3216.
MLA	Chen, Juanjuan,et al."Fabrication and mechanical properties of h-BN based composites containing dual glass phases".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 38.9(2018):3210-3216.