| Preparation, microstructures, and mechanical properties of directionally solidified Al2O3/Lu3Al5O12 eutectic ceramics | |
| Sun, Haofei1,2; Zhou, Cui1,3; Du, Tiefeng1; Wu, Zhen1; Xian, Quangang1; Sun, Luchao1; Liu, Jing2; Wang, Jingyang1 | |
| Corresponding Author | Sun, Luchao(lcsun@imr.ac.cn) ; Wang, Jingyang(jywang@imr.ac.cn) |
| 2021-10-27 | |
| Source Publication | INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
 |
| ISSN | 1546-542X |
| Pages | 8 |
| Abstract | 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. |
| Keyword | directional solidification eutectic oxides mechanical properties microstructures |
| Funding Organization | Natural Science Foundation of Liaoning Province ; National Science andTechnology Major Project ; International Cooperation Key Program ; Liao Ning Revitalization Talents Program |
| DOI | 10.1111/ijac.13936 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Materials Science |
| WOS Subject | Materials Science, Ceramics |
| WOS ID | WOS:000711811600001 |
| Publisher | WILEY |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/167095 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Sun, Luchao; Wang, Jingyang |
| Affiliation | 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 |
| Recommended Citation 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. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment