Preparation, microstructures, and mechanical properties of directionally solidified Al2O3/Lu3Al5O12 eutectic ceramics

doi:10.1111/ijac.13936

CORC > 金属研究所 > 中国科学院金属研究所

	Preparation, microstructures, and mechanical properties of directionally solidified Al2O3/Lu3Al5O12 eutectic ceramics
	Sun, Haofei 1,2; Zhou, Cui 1,3; Du, Tiefeng 1; Wu, Zhen 1; Xian, Quangang 1; Sun, Luchao 1; Liu, Jing 2; Wang, Jingyang 1
刊名	INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
	2021-10-27
页码	8
关键词	directional solidification eutectic oxides mechanical properties microstructures
ISSN号	1546-542X
DOI	10.1111/ijac.13936
通讯作者	Sun, Luchao(lcsun@imr.ac.cn) ; Wang, Jingyang(jywang@imr.ac.cn)
英文摘要	Al2O3/Lu3Al5O12 (LuAG) directionally solidified eutectic (DSE) ceramics with two solidification rates were prepared utilizing optical floating zone (OFZ) technique. The microstructures (eutectic morphology, preferred growth direction and interface orientation) of Al2O3/LuAG were characterized, and the mechanical properties (Vickers hardness and fracture toughness) were compared with those of Al2O3/REAG (RE = Y, Er, and Yb). Results show that Al2O3/LuAG with solidification rate of 30 mm/h has established preferred growth direction in both Al2O3 and LuAG phases with cellular eutectic structures. While Al2O3/LuAG with solidification rate of 10 mm/h only shows preferred growth direction in Al2O3 phase and presents degenerate irregular eutectic microstructures. Besides, Al2O3/LuAG exhibits higher hardness compared with Al2O3/REAG (RE = Y, Er, and Yb). In addition, a special attention is focused on the relations among rare earth ionic radius, eutectic microstructures, and mechanical properties of these DSE ceramics. It is demonstrated that a smaller rare earth ionic radius could lead to larger eutectic interspacing as well as higher Vickers hardness of DSE Al2O3/REAG, revealing the possibility and feasibility of microstructure control and mechanical properties optimization for DSE Al2O3/REAG ceramics by tailoring the rare earth elements.
资助项目	Natural Science Foundation of Liaoning Province[2020MS-006] ; National Science andTechnology Major Project[2017-VI-0020-0093] ; International Cooperation Key Program[174321KYSB20180008] ; Liao Ning Revitalization Talents Program[XLYC2002018]
WOS研究方向	Materials Science
语种	英语
出版者	WILEY
WOS记录号	WOS:000711811600001
资助机构	Natural Science Foundation of Liaoning Province ; National Science andTechnology Major Project ; International Cooperation Key Program ; Liao Ning Revitalization Talents Program
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/167094]
专题	金属研究所_中国科学院金属研究所
通讯作者	Sun, Luchao; Wang, Jingyang
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB, Canada 3.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang, Peoples R China
推荐引用方式 GB/T 7714	Sun, Haofei,Zhou, Cui,Du, Tiefeng,et al. Preparation, microstructures, and mechanical properties of directionally solidified Al2O3/Lu3Al5O12 eutectic ceramics[J]. INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY,2021:8.
APA	Sun, Haofei.,Zhou, Cui.,Du, Tiefeng.,Wu, Zhen.,Xian, Quangang.,...&Wang, Jingyang.(2021).Preparation, microstructures, and mechanical properties of directionally solidified Al2O3/Lu3Al5O12 eutectic ceramics.INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY,8.
MLA	Sun, Haofei,et al."Preparation, microstructures, and mechanical properties of directionally solidified Al2O3/Lu3Al5O12 eutectic ceramics".INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY (2021):8.