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Low-temperature fabrication of NiCuZn Ferrite^|^ndash;(Ba0.7Sr0.3)TiO3 composites using granulated powders

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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
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
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)

Submitter: 高橋 順一

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