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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Engineering / Faculty of Engineering >
Peer-reviewed Journal Articles, etc >
Low-temperature fabrication of NiCuZn Ferrite^|^ndash;(Ba0.7Sr0.3)TiO3 composites using granulated powders
| Title: | Low-temperature fabrication of NiCuZn Ferrite^|^ndash;(Ba0.7Sr0.3)TiO3 composites using granulated powders |
| Authors: | Kitahara, Naoto Browse this author | | Kageyama, Hiroaki Browse this author | | Kawasaki, Tomoya Browse this author | | Abe, Kazutomo Browse this author | | Itoh, Hidenobu Browse this author | | Takahashi, Junichi Browse this author →KAKEN DB |
| Keywords: | NiCuZn ferrite | | (Ba0.7Sr0.3)TiO3 | | Composite ceramics | | Granulated powder | | Bi2O3-based additive | | Low-temperature sintering |
| Issue Date: | 2013 |
| Publisher: | The Ceramic Society of Japan |
| Journal Title: | Journal of the Ceramic Society of Japan |
| Volume: | 121 |
| Issue: | 1409 |
| Start Page: | 54 |
| End Page: | 61 |
| Publisher DOI: | 10.2109/jcersj2.121.54 |
| Abstract: | NiCuZn ferrite( Ba0.7Sr0.3)TiO3 (BST) composite ceramics with the BST content of up to 50 vol% were fabricated by sintering compacted powder mixtures at 900°C. The granulation of the BST powder and addition of a Bi2O3-based oxide additive effectively assisted the densification of the composite samples. The samples thus fabricated showed required ¾r values whereas their ®r values were considerably reduced, especially for those with lower BSTcontents. From the detailed examinations on the effect of the Bi2O3- based oxide additives and on the process modification to improve the reduced ®r values, the addition of a Bi2O3ZnO additive with the eutectic composition of as low as 1wt%was enough to produce a densified 10 vol%BSTcomposite sample with a highest ®r value. It was also found that the incorporation of ferrite granules calcined at 600°C caused further improvement of ®r. Thus, a densified 10BST composite sample with ®r = 125 was fabricated by low-temperature sintering at 900°C. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/57325 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 高橋 順一
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