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Mechanical properties of directionally solidified Al2O3/Y3Al5O12 eutectic ceramic prepared by optical floating zone technique
Wang, Xu1,4; Tian, Zhilin2; Zhang, Wen1; Zhong, Yujie3; Xian, Quangang4; Zhang, Jian4; Wang, Jingyang4
Corresponding AuthorZhong, Yujie(yjzhong11s@alum.imr.ac.cn) ; Wang, Jingyang(jywang@imr.ac.cn)
2018-08-01
Source PublicationJOURNAL OF THE EUROPEAN CERAMIC SOCIETY
ISSN0955-2219
Volume38Issue:10Pages:3610-3617
AbstractAl2O3/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.
KeywordAl2O3/YAG DSE Directional solidification Eutectic microstructure Mechanical properties
Funding OrganizationResearch Fund of Equipment Development ; National Natural Science Foundation of China ; Doctoral Starting Fund of Xi'an University of Technology
DOI10.1016/j.jeurceramsoc.2018.04.017
Indexed BySCI
Language英语
Funding ProjectResearch Fund of Equipment Development[6140759040102] ; Research Fund of Equipment Development[6140923040203] ; National Natural Science Foundation of China[51701156] ; Doctoral Starting Fund of Xi'an University of Technology[101-451116013]
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Ceramics
WOS IDWOS:000432768900026
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/128131
Collection中国科学院金属研究所
Corresponding AuthorZhong, Yujie; Wang, Jingyang
Affiliation1.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
Recommended Citation
GB/T 7714
Wang, Xu,Tian, Zhilin,Zhang, Wen,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, Xu.,Tian, Zhilin.,Zhang, Wen.,Zhong, Yujie.,Xian, Quangang.,...&Wang, Jingyang.(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, Xu,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.
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