Formation and thermal stability of dual glass phases in the h-BN/SiO2/Yb-Si-Al-O composites

doi:10.1016/j.jeurceramsoc.2019.10.028

CORC > 金属研究所 > 中国科学院金属研究所

	Formation and thermal stability of dual glass phases in the h-BN/SiO2/Yb-Si-Al-O composites
	Chen, Juanjuan 1,2; Chen, Jixin 2
刊名	JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
	2020-02-01
卷号	40 期号:2 页码:456-462
关键词	h-BN based composite Dual glass phases Glass transition Microstructural evolution Thermal stability
ISSN号	0955-2219
DOI	10.1016/j.jeurceramsoc.2019.10.028
通讯作者	Chen, Jixin(jxchen@imr.ac.cn)
英文摘要	The glass phases formation and microstructural evolution in the h-BN/SiO2/Yb-Si-Al-O composite were investigated. Owing to the introduction of Al2O3, SiO2 could transform into amorphous silica at a lower temperature (similar to 1600 degrees C). On the other hand, with increasing temperature, Al3+ gradually dissolved into ytterbium silicate (Yb2Si2O2) and then accelerated the formation of amorphous Yb-Si-Al-O glass phase. Up to 1880 degrees C, fine spherical Yb-Si-Al-O glass particles and irregular amorphous silica distributed uniformly, which contributes to the excellent mechanical properties of the composite. The thermal stability study disclosed that more [A1O(4)] units could effectively inhibit crystallization of the Yb-Si-Al-O glass phase, but mechanical properties of composite still decreased slowly with increasing the heat treatment temperature. For example, the flexural strength of the composite with 1.5 wt.% Al2O3 decreased from 297 +/- 30 to 284 +/- 22 MPa as the treatment temperature rose from 800 to 1200 degrees C.
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
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000498292100033
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/136192]
专题	金属研究所_中国科学院金属研究所
通讯作者	Chen, Jixin
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Met Res, High Performance Ceram Div, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Chen, Juanjuan,Chen, Jixin. Formation and thermal stability of dual glass phases in the h-BN/SiO2/Yb-Si-Al-O composites[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2020,40(2):456-462.
APA	Chen, Juanjuan,&Chen, Jixin.(2020).Formation and thermal stability of dual glass phases in the h-BN/SiO2/Yb-Si-Al-O composites.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,40(2),456-462.
MLA	Chen, Juanjuan,et al."Formation and thermal stability of dual glass phases in the h-BN/SiO2/Yb-Si-Al-O composites".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 40.2(2020):456-462.