Microstructure evolution and crystallography of directionally solidified Al2O3/Y3Al5O12 eutectic ceramics prepared by the modified Bridgman method

doi:10.1016/j.jmst.2019.05.018

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	Microstructure evolution and crystallography of directionally solidified Al2O3/Y3Al5O12 eutectic ceramics prepared by the modified Bridgman method
	Wang, Xu 1; Zhang, Nan 1; Zhong, Yujie 2; Jiang, Bailing 1; Lo, Langhong 3; Zhang, Jian 3; Wang, Jingyang 3
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2019-09-01
卷号	35 期号:9 页码:1982-1988
关键词	Al2O3/YAG eutectic ceramics Crystallography Interfaces Bridgman method
ISSN号	1005-0302
DOI	10.1016/j.jmst.2019.05.018
通讯作者	Wang, Xu(xwang@alum.imr.ac.cn)
英文摘要	Large size, high-density (99.97%) and well-organized Al2O3/Y3Al5O12 (YAG) eutectic ceramics were prepared by the modified Bridgman method. The evolution of the three dimensional microstructure and micropores were investigated. The diameter of the micro-pores and the porosity decreased during directional solidification. The average equivalent diameter of the micro-pores was 2.41 mu m in the well-prepared eutectic ceramics. Most of the pores (98.07%) were smaller than 4 mu m. These data are comparable to those prepared by the optical floating zone method. The as-grown eutectic ceramics were polycrystalline, but the interfaces were well-bonded and there were no amorphous phases in the microstructure. The misfits of the different crystallographic relationships were calculated, and the bottleneck of the single-crystal preparation was identified. These results could provide theoretical guidance for the preparation of large, single-crystal Al2O3/YAG eutectic ceramics by the modified Bridgman method. (C) 2019 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
资助项目	National Natural Science Foundation of China[51804252] ; National Natural Science Foundation of China[51701156] ; Equipment Pre-Research Foundation of China[6140759040102] ; Equipment Pre-Research Foundation of China[6140923040203] ; Doctoral Starting Fund of Xi'an University of Technology[101-451116013]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	JOURNAL MATER SCI TECHNOL
WOS记录号	WOS:000475870600021
资助机构	National Natural Science Foundation of China ; Equipment Pre-Research Foundation of China ; Doctoral Starting Fund of Xi'an University of Technology
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/134520]
专题	金属研究所_中国科学院金属研究所
通讯作者	Wang, Xu
作者单位	1.Xian Univ Technol, Sch Mat Sci & Engn, Xian 710048, Shaanxi, Peoples R China 2.Xian Shiyou Univ, Sch Mat Sci & Engn, Xian 710065, Shaanxi, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xu,Zhang, Nan,Zhong, Yujie,et al. Microstructure evolution and crystallography of directionally solidified Al2O3/Y3Al5O12 eutectic ceramics prepared by the modified Bridgman method[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2019,35(9):1982-1988.
APA	Wang, Xu.,Zhang, Nan.,Zhong, Yujie.,Jiang, Bailing.,Lo, Langhong.,...&Wang, Jingyang.(2019).Microstructure evolution and crystallography of directionally solidified Al2O3/Y3Al5O12 eutectic ceramics prepared by the modified Bridgman method.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,35(9),1982-1988.
MLA	Wang, Xu,et al."Microstructure evolution and crystallography of directionally solidified Al2O3/Y3Al5O12 eutectic ceramics prepared by the modified Bridgman method".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 35.9(2019):1982-1988.