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Proceedings Paper

Fabrication of piezoelectric ceramic fibers by extrusion of PZT powder and PZT sol mixture
Author(s): Yoshimasa Kobayashi; Tae Young Um; Jinhao Qiu; Junji Tani; Hirofumi Takahashi
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Paper Abstract

This study aims to fabricate Pb(Zr,Ti)O3 (PZT) piezoelectric ceramic fibers by extrusion with mixture of PZT powder and PZT sol. The added PZT sol in this study played a role as a binder; the sol changed into PZT crystalline during sintering, and removal process of additives before sintering was not required. To obtain PZT fibers, the condition of sol viscosity adjustment, the mixture ratio of powder and sol for fiber extrusion, and the sintering condition for obtaining polycrystalline fibers were investigated. PZT precursor solution was synthesized from lead acetate trihydrate, zirconium n-propoxide and titanium isopropoxide by reflux at 120 degree(s)C for 3 hours with 2-methoxyethanol. The appropriate adjustment of spinnable sol was achieved by the addition of acetic acid for suppressing the hydrolysis reaction and the curing sol at 80 degree(s)C for promoting the condensation of sol. Green fibers with diameter of about 300micrometers were successfully extruded from the mixture of PZT powder and sol. The extruded fibers sintered at 1200 degree(s)C had the microstructure with 2-6micrometers grains and had no pores or cracks. From the result of displacement behavior measurement, PZT fibers fabricated by firing at 1200 degree(s)C in this study were considered to have desired piezoelectric properties.

Paper Details

Date Published: 11 July 2001
PDF: 8 pages
Proc. SPIE 4333, Smart Structures and Materials 2001: Active Materials: Behavior and Mechanics, (11 July 2001); doi: 10.1117/12.432770
Show Author Affiliations
Yoshimasa Kobayashi, Tohoku Univ. (Japan)
Tae Young Um, Tohoku Univ. (Japan)
Jinhao Qiu, Tohoku Univ. (Japan)
Junji Tani, Tohoku Univ. (Japan)
Hirofumi Takahashi, Fuji Ceramics Corp. (Japan)

Published in SPIE Proceedings Vol. 4333:
Smart Structures and Materials 2001: Active Materials: Behavior and Mechanics
Christopher S. Lynch, Editor(s)

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