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Title: Fabrication of PZN-PZT piezoceramics and ceramic fibers
Authors: Li, K
Cao, DH
Li, JH
Chan, HLW 
Keywords: 1-3 composites
Ceramic fiber
Lead zirconate titanate
Issue Date: 2005
Publisher: 中國學術期刊(光盤版)電子雜誌社
Source: 無機材料學報 (Journal of inorganic materials), 2005, v. 20, no. 5, p. 1099-1105 How to cite?
Journal: 無機材料學報 (Journal of inorganic materials) 
Abstract: By using lead acetate, zinc propionate, niobium ethoxide, zirconium propoxide and titanium butoxide as precursors, zinc and niobium modified lead zirconate titanate (PZN-PZT) gel fibers were fabricated by the sol-gel method. Prolyzed and sintered, The PZN-PZT ceramic fibers with a diameter of about 25 μm were obtained. The SEM micrographs show that these ceramic fibers are dense and uniform. The X-ray diffraction patterns show that sintering temperatures will affect the crystal structure of PZN-PZT ceramics. When the sintering temperature is higher than 1250°C, the sintered ceramics and ceramic fibers have a pure perovskite structure. The densities of the bulk ceramic and ceramic fiber are 7.70 × 103 kg/m3 and 7.80 × 103 kg/m3, which were measured by Archimedes method. The electromechanical coupling coefficient kt , piezoelectric coefficient d33 and relative permittivity e of the PZN-PZT fiber/epoxy 1-3 composite disk with 63% fibers loaded are 0.65, 403 pC/N and 1300 respectively. The kt, d33 and ε of the PZN-PZT ceramics made from the sol-gel powder are 0.48, 600 pC/N and 2627 respectively.
ISSN: 1000-324X
EISSN: 1463-0176
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