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Effect of interfacial energy on microstructure of a directionally solidified Al2O3/YAG eutectic ceramic
Wang, X; Zhong, YJ; Wang, D; Sun, LC; Jiang, BL; Wang, JY; Zhong, YJ (reprint author), Xian Shiyou Univ, Sch Mat Sci & Engn, Xian, Shaanxi, Peoples R China.; Wang, JY (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang, Liaoning, Peoples R China.
2018-03-01
Source PublicationJOURNAL OF THE AMERICAN CERAMIC SOCIETY
ISSN0002-7820
Volume101Issue:3Pages:1029-1035
AbstractAn Al2O3/ Y3Al5O12 eutectic ceramic was prepared with a c- axis sapphire seed by an optical floating zone furnace. The crystallographic relationships in the initial and the steady growth sections of the as- grown eutectic ceramic were investigated by electron backscattering diffraction and transmission electron microscopy. The corresponding results were: < 111 > {101} Y3Al5O12 || < 0001 > {11 - 20} Al2O3 and < 110 > {2 - 11} Y3Al5O12 || < 1 - 100 > {0001} Al2O3, respectively. The steady orientation of the latter one shows smaller planar disregistry. Interfacial strain played the decisive role in affecting the solidification behavior of the Al2O3/ Y3Al5O12 eutectic ceramic. The stability of interfaces with minimum interfacial strain and better ionic charge balance in irregular microstructure prevail upon the constraint of the seed. These results might cast light for the interfacial design of the Al2O3/ Y3Al5O12 binary eutectic ceramic.; An Al2O3/ Y3Al5O12 eutectic ceramic was prepared with a c- axis sapphire seed by an optical floating zone furnace. The crystallographic relationships in the initial and the steady growth sections of the as- grown eutectic ceramic were investigated by electron backscattering diffraction and transmission electron microscopy. The corresponding results were: < 111 > {101} Y3Al5O12 || < 0001 > {11 - 20} Al2O3 and < 110 > {2 - 11} Y3Al5O12 || < 1 - 100 > {0001} Al2O3, respectively. The steady orientation of the latter one shows smaller planar disregistry. Interfacial strain played the decisive role in affecting the solidification behavior of the Al2O3/ Y3Al5O12 eutectic ceramic. The stability of interfaces with minimum interfacial strain and better ionic charge balance in irregular microstructure prevail upon the constraint of the seed. These results might cast light for the interfacial design of the Al2O3/ Y3Al5O12 binary eutectic ceramic.
description.department[wang, xu ; jiang, bailing] xian univ technol, sch mat sci & engn, xian, shaanxi, peoples r china ; [zhong, yujie] xian shiyou univ, sch mat sci & engn, xian, shaanxi, peoples r china ; [wang, dong] chinese acad sci, superalloys div, inst met res, shenyang, peoples r china ; [sun, luchao ; wang, jingyang] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang, liaoning, peoples r china
KeywordHigh-temperature Applications Yttrium-aluminum-garnet Fracture Composites Crystal Growth Melt Stability Mechanism Strength
Subject AreaMaterials Science, Ceramics
Funding OrganizationEquipment Pre-Research Foundation of China [6140759040102, 6140923040203]; National Natural Science Foundation of China [51701156, 51402313]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79474
Collection中国科学院金属研究所
Corresponding AuthorZhong, YJ (reprint author), Xian Shiyou Univ, Sch Mat Sci & Engn, Xian, Shaanxi, Peoples R China.; Wang, JY (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang, Liaoning, Peoples R China.
Recommended Citation
GB/T 7714
Wang, X,Zhong, YJ,Wang, D,et al. Effect of interfacial energy on microstructure of a directionally solidified Al2O3/YAG eutectic ceramic[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2018,101(3):1029-1035.
APA Wang, X.,Zhong, YJ.,Wang, D.,Sun, LC.,Jiang, BL.,...&Wang, JY .(2018).Effect of interfacial energy on microstructure of a directionally solidified Al2O3/YAG eutectic ceramic.JOURNAL OF THE AMERICAN CERAMIC SOCIETY,101(3),1029-1035.
MLA Wang, X,et al."Effect of interfacial energy on microstructure of a directionally solidified Al2O3/YAG eutectic ceramic".JOURNAL OF THE AMERICAN CERAMIC SOCIETY 101.3(2018):1029-1035.
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