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Proceedings Paper

Characterization of giant magnetostrictive composite materials prepared under a magnetic field
Author(s): Mitsuaki Takeuchi; Yoshihito Matsumura; Hirohisa Uchida; Masakazu Fujita; Toshiro Kuji
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Paper Abstract

Giant magnetostrictive (GM) composite materials with high corrosion resistance and high electrical resistivity were developed. Magnetostriction of the composite material prepared under magnetic field at 19 kOe was about 880 ppm, and the TbFe2 particle size in the sample was 100-150 μm. Shape anisotropy of the TbFe2 particles induced by compression and magnetic field caused to increase the magnetization and magnetostriction measured for y axis of the composite samples formed with magnetic field. The composite materials showed high resistivity in order to 10-2 Ωm and exhibited in order to 10-2 g hour-1 of corrosion rate. The corrosion rate of the composite samples increased with increasing TbFe2 particle size. The corrosion rate of the composite materials may be affected to volume fraction of the TbFe2 particles exposed area in surface of the composite materials.

Paper Details

Date Published: 13 November 2002
PDF: 8 pages
Proc. SPIE 4934, Smart Materials II, (13 November 2002); doi: 10.1117/12.469174
Show Author Affiliations
Mitsuaki Takeuchi, Tokai Univ. (Japan)
Yoshihito Matsumura, Tokai Univ. (Japan)
Hirohisa Uchida, Tokai Univ. (Japan)
Masakazu Fujita, Mitsui Mining and Smelting Co., Ltd. (Japan)
Toshiro Kuji, Mitsui Mining and Smelting Co., Ltd. (Japan)


Published in SPIE Proceedings Vol. 4934:
Smart Materials II
Alan R. Wilson, Editor(s)

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