Mechanical properties of directionally solidified Al2O3/Y3Al5O12 eutectic ceramic prepared by optical floating zone technique

doi:10.1016/j.jeurceramsoc.2018.04.017

CORC > 金属研究所 > 中国科学院金属研究所

	Mechanical properties of directionally solidified Al2O3/Y3Al5O12 eutectic ceramic prepared by optical floating zone technique
	Wang, X 3; Tian, ZL ; Zhang, W ; Zhong, YJ ; Xian, QG ; Zhang, J 3; Wang, JY
刊名	JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
	2018-08-01
卷号	38 期号:10 页码:3610-3617
关键词	Al2O3/YAG DSE Directional solidification Eutectic microstructure Mechanical properties
ISSN号	0955-2219
DOI	10.1016/j.jeurceramsoc.2018.04.017
英文摘要	Al2O3/Y3Al5O12(YAG) directionally solidified eutectic (DSE) crystal was prepared by optical floating zone technique. A1(2)O(3)/YAG DSE consists of continuous entangled Al2O3 and the YAG forming a three-dimensional networks structure. The volume fraction of porosity is ultra-low (0.013%) and the average equivalent diameters of most pores (> 84%) are smaller than 4 mu m. The Al2O3/YAG DSE shows excellent high-temperature elastic stiffness. The Young's modulus at 1500 degrees C maintains more than 85% of the value at room temperature. Bending strength exhibits excellent retention up to high temperature as well. High-temperature ball indentation testing shows plastic deformation involving dislocations and twinning, which predominantly occur in A1(2)O(3) phase, while the YAG phase is stable. Evaluation on H-v/E index predicts A1(2)O(3)/YAG DSE with moderate capability to accommodate damages. Our results highlight A1(2)O(3)/YAG DSE as excellent high-temperature structural materials.
学科主题	Materials Science, Ceramics
语种	英语
WOS记录号	WOS:000432768900026
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/80086]
专题	金属研究所_中国科学院金属研究所
作者单位	1.Xian Univ Technol, Sch Mat Sci & Engn, 5 South Jinhua Rd, Xian 710048, Shaanxi, Peoples R China 2.Chinese Univ Hong Kong, Dept Elect Engn, Hong Kong, Hong Kong, Peoples R China 3.Xian Shiyou Univ, Sch Mat Sci & Engn, Xian 710065, Shaanxi, Peoples R China 4.Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Wang, X,Tian, ZL,Zhang, W,et al. Mechanical properties of directionally solidified Al2O3/Y3Al5O12 eutectic ceramic prepared by optical floating zone technique[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2018,38(10):3610-3617.
APA	Wang, X.,Tian, ZL.,Zhang, W.,Zhong, YJ.,Xian, QG.,...&Wang, JY.(2018).Mechanical properties of directionally solidified Al2O3/Y3Al5O12 eutectic ceramic prepared by optical floating zone technique.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,38(10),3610-3617.
MLA	Wang, X,et al."Mechanical properties of directionally solidified Al2O3/Y3Al5O12 eutectic ceramic prepared by optical floating zone technique".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 38.10(2018):3610-3617.