期刊
SCRIPTA MATERIALIA
卷 162, 期 -, 页码 286-291出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2018.11.028
关键词
Sintering; Energy dispersive X-ray diffraction; BiFeO3; Nanocrystalline materials
类别
资金
- Office of Naval Research (ONR) [N00014-10-1-042, N00014-17-1-2087, Sub 4104-78982]
- Purdue University
- MINECO-FEDER [CTQ2014-52763-C2-1-R, CTQ201783602-C2]
- DOE Office of Science [DE-AC02-06CH11357]
- Real Colegio Complutense
- VPPI-US
BiFeO3 has a Curie temperature (T-c) of 825 degrees C, making it difficult to sinter using conventional methods while maintaining the purity of the material, as unavoidably secondary phases appear at temperatures above T-c Flash sintering is a relatively new technique that saves time and energy compared to other sintering methods. BiFeO3 was flash sintered at 500 degrees C to achieve 90% densification. In-situ energy dispersive X-ray diffraction (EDXRD) revealed that the material did not undergo any phase transformation, having been sintered well below the Tc. Interestingly, anisotropic lattice expansion in the material was observed when the sample was exposed to the electric field. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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