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Microstructure evolution and crystallography of directionally solidified Al2O3/Y3Al5O12 eutectic ceramics prepared by the modified Bridgman method
Wang, Xu; Zhang, Nan; Zhong, Yujie; Jiang, Bailing; Lo, Langhong; Zhang, Jian; Wang, Jingyang
2019-09-01
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume35Issue:9Pages:1982-1988
AbstractLarge 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.
KeywordAl2O3/YAG eutectic ceramics Crystallography Interfaces Bridgman method
Indexed BySCI
Language英语
WOS IDWOS:000475870600021
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/80808
Collection中国科学院金属研究所
Recommended Citation
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.
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