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

doi:10.1016/j.jeurceramsoc.2018.02.035

CORC > 金属研究所 > 中国科学院金属研究所

	Fabrication and mechanical properties of h-BN based composites containing dual glass phases
	Chen, JJ ; Chen, JX ; Zhang, X 2; Hu, MM ; Li, MS
刊名	JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
	2018-08-01
卷号	38 期号:9 页码:3210-3216
关键词	h-BN Dual glass phases Vitrification Coordination state Strengthening
ISSN号	0955-2219
DOI	10.1016/j.jeurceramsoc.2018.02.035
英文摘要	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.
学科主题	Materials Science, Ceramics
语种	英语
WOS记录号	WOS:000433014200020
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/80082]
专题	金属研究所_中国科学院金属研究所
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, JJ,Chen, JX,Zhang, X,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, JJ,Chen, JX,Zhang, X,Hu, MM,&Li, MS.(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, JJ,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.