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Effect of suction force and starting powders on microstructure of Bi4Ti3O12 ceramics prepared by magnetic alignment via slip casting |
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| Authors: | Weiwu Chen Yuji Hotta Takuya Tamura Kenji Miwa Koji Watari |
| Affiliation: | aAdvanced Manufacturing Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Nagoya 463-8560, Japan bMaterials Research Institute for Sustainable Development, National Institute of Advanced Industrial Science and Technology (AIST), Nagoya 463-8560, Japan |
| Abstract: | The microstructures of Bi4Ti3O12 (BIT) ceramics made in a vertical magnetic field via a slip casting route are investigated. Two kinds of BIT powders, with equiaxial and plate-like particles, are used. Magnetic force aligns the BIT particles successfully, but the samples are not homogenous. In the top zone, BIT grains in both samples have a–b-plane orientation due to the strong magnetic force. In the bottom zone, the sample using equiaxial particles shows a random microstructure, and the sample using plate-like particles shows c-plane orientation. This is because of the suction force of slip casting. |
| Keywords: | Powder processing Oxides Microstructure Electroceramics Magnetic alignment |
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