Study of Zinc and Niobium Modified Lead Zirconate Titanate Fiber/Epoxy 1–3 Composites

Zn- and Nb-modified lead zirconate titanate (PZN-PZT) fibers were prepared by the sol-gel method. After sintering at various temperatures the crystal structure of the ceramic fibers was determined by XRD. The morphology of the ceramic fibers was studied using a SEM. A bundle of ceramic fibers of 25...

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Published inJapanese Journal of Applied Physics Vol. 41; no. Part 1, No. 11B; pp. 6989 - 6992
Main Authors Li, Kun, Chan, Helen Lai-Wa, Choy, Chung-Loong
Format Journal Article
LanguageEnglish
Published 01.11.2002
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Summary:Zn- and Nb-modified lead zirconate titanate (PZN-PZT) fibers were prepared by the sol-gel method. After sintering at various temperatures the crystal structure of the ceramic fibers was determined by XRD. The morphology of the ceramic fibers was studied using a SEM. A bundle of ceramic fibers of 25 mu m diameter was placed in a plastic tube, which was then filled with epoxy. After curing, a PZN-PZT fiber/epoxy 1-3 composite rod was formed. The rod was sliced into disks which were then polished to a thickness of approximately 40 mu m. A composite disk with 0.62 ceramic volume fraction was poled under an electric field of 3.5 kV/mm at 120 C for 15 min. The electromechanical coupling coefficient, piezoelectric coefficient and relative permittivity of the disk were 0.67, 403 pC/N and 1300, resp. The hysteresis loop of the composite was also determined, and the remnant polarization was 12 mu C/cm2. 5 refs.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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content type line 23
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.41.6989