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Competitive growth of Al2O3/YAG/ZrO2 eutectic ceramics during directional solidification: Effect of interfacial energy
Wang, Xu; Zhong, Yujie; Sun, Qian; Qi, Dongqing; Yan, Fuxue; Xian, Quangang; Wang, Dong; Du, Kui; Wang, Jingyang
2019-04-01
Source PublicationJOURNAL OF THE AMERICAN CERAMIC SOCIETY
ISSN0002-7820
Volume102Issue:4Pages:2176-2186
AbstractThe microstructure evolution and growth behavior of the Al2O3/Y3Al5O12(YAG)/ZrO2 ternary eutectic ceramics during directional solidification were well investigated. During directional solidification of the Al2O3/YAG/ZrO2 ternary eutectic ceramics, {1120} Al2O3 paralleled with {001}ZrO2 while they did not parallel with {001}YAG at the same time in the competitive growth stage. All of the interfaces parallel to each other finally. The area percentage of the Al2O3/ZrO2 and YAG/ZrO2 interfaces are 40.4 +/- 0.2% and 30.8 +/- 0.1%, respectively, higher than that of the Al2O3/YAG (28.8 +/- 0.2%). The content of Al2O3 and YAG phases are 39.9% and 41.1%, respectively, almost double of that of ZrO2. The interfaces of Al2O3/ZrO2 and YAG/ZrO2 are shorter and more dispersed than that of the Al2O3/YAG. It was found that the interfacial energy of Al2O3/ZrO2 and YAG/ZrO2 interfaces are lower than that of Al2O3/YAG. It can be concluded that interfacial energy plays a decisive role in affecting the crystallographic orientation and interfaces distribution in the Al2O3/YAG/ZrO2 eutectic since the interfaces of Al2O3/ZrO2 and YAG/ZrO2 with lower interfacial energy can be formed more easily during directional solidification. Therefore, the contents of Al2O3/ZrO2 and YAG/ZrO2 interfaces are higher. This study can provide theoretical guidance for interface design of multi-phase materials.
KeywordAl2O3 YAG ZrO2 eutectic ceramics interfaces microstructure orientation
Indexed BySCI
Language英语
WOS IDWOS:000459595500064
PublisherWILEY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81237
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Wang, Xu,Zhong, Yujie,Sun, Qian,et al. Competitive growth of Al2O3/YAG/ZrO2 eutectic ceramics during directional solidification: Effect of interfacial energy[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2019,102(4):2176-2186.
APA Wang, Xu.,Zhong, Yujie.,Sun, Qian.,Qi, Dongqing.,Yan, Fuxue.,...&Wang, Jingyang.(2019).Competitive growth of Al2O3/YAG/ZrO2 eutectic ceramics during directional solidification: Effect of interfacial energy.JOURNAL OF THE AMERICAN CERAMIC SOCIETY,102(4),2176-2186.
MLA Wang, Xu,et al."Competitive growth of Al2O3/YAG/ZrO2 eutectic ceramics during directional solidification: Effect of interfacial energy".JOURNAL OF THE AMERICAN CERAMIC SOCIETY 102.4(2019):2176-2186.
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