High-temperature mechanical and thermal properties of h-BN/30 vol% Y2SiO5 composite

IMR OpenIR

	High-temperature mechanical and thermal properties of h-BN/30 vol% Y2SiO5 composite
	Zhang, Xi; Chen, Jixin; Zhang, Jie; Wan, Detian; Zhou, Yanchun
	2015
发表期刊	CERAMICS INTERNATIONAL
ISSN	0272-8842
卷号	41 期号:9 页码:10891-10896
摘要	High-temperature mechanical and thermal properties of h-BN/30 vol%Y2SiO5 composite were systematically investigated in this study. The composite exhibits an improved elastic modulus and strength at high temperatures. The elastic modulus reaches a maximum of 98 GPa at 1478 K, and the flexural strength increases from 119 +/- 3 to 188 +/- 12 MPa in the range from room temperature to 1473K. These improvements in the mechanical properties of the material are primarily attributed to the closing of microcracks in both the h-BN matrix and the h-BN/Y2SiO5 interphase. Particularly, the strengthening effect at 1473 K results from the healing of surface defects by borosilicate glass formed during testing in air. The linear coefficients of thermal expansion in the temperature range of 373 to 1573 K in the perpendicular and parallel directions are determined to be 4.4-5.0 x 10(-6) and 7.9-9.2 x 10(-6) K-1, respectively. The room-temperature thermal conductivities in the perpendicular and parallel directions are determined to be 42 and 28W.m(-1).K-1; these values subsequently decrease to 18 and 12W.m(-1).K-1 at 1473 K, respectively. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
部门归属	[zhang, xi ; chen, jixin ; zhang, jie] chinese acad sci, inst met res, shenyang natl lab mat sci, high performance ceram div, shenyang 110016, peoples r china ; [zhang, xi] chinese acad sci, grad sch, beijing 100039, peoples r china ; [wan, detian] china bldg mat acad, state key lab green bldg mat, beijing 100024, peoples r china ; [zhou, yanchun] aerosp res inst mat & proc technol, sci & technol adv funct composite lab, beijing 100076, peoples r china
关键词	C. Thermal Properties H-bn/y2sio5 Composite High-temperature Mechanical Properties
资助者	Natural Sciences Foundation of China [50802099, 51072201, 51172221]
收录类别	sci
语种	英语
WOS记录号	WOS:000359165500070
引用统计	被引频次：23[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/321006/74893
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Zhang, Xi,Chen, Jixin,Zhang, Jie,et al. High-temperature mechanical and thermal properties of h-BN/30 vol% Y2SiO5 composite[J]. CERAMICS INTERNATIONAL,2015,41(9):10891-10896.
APA	Zhang, Xi,Chen, Jixin,Zhang, Jie,Wan, Detian,&Zhou, Yanchun.(2015).High-temperature mechanical and thermal properties of h-BN/30 vol% Y2SiO5 composite.CERAMICS INTERNATIONAL,41(9),10891-10896.
MLA	Zhang, Xi,et al."High-temperature mechanical and thermal properties of h-BN/30 vol% Y2SiO5 composite".CERAMICS INTERNATIONAL 41.9(2015):10891-10896.