Publication: Sintering and characterization of PLZT (9/65/35)
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Date
Advisor
Coadvisor
Graduate program
Undergraduate course
Journal Title
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Volume Title
Publisher
Elsevier B.V.
Type
Article
Access right
Acesso restrito
Abstract
PLZT(9/65/35) obtained by association between the Pechini method (ZT) and partial oxalate (PLZT) was prepared. The stoichiometric phase and monophasic (cubic) PLZT obtained by calcination did not occur after sintering. The sintering process, by using two stages, caused a liquid phase formation due to a PbO excess (5 and 10 wt%). Samples with high density (similar to 8 g/cm(3)) and optical transparency(similar to 12%) were obtained. However, an equilibrium between the excess of PbO of sample/atmosphere PbO leads to a segregated PbO phase on the boundaries of the microstructure. A diffusion of Zr, Ti and La ions from PLZT to PbO phase promoted a stoichiometric deviation of the matrix and modified the optical and dielectric characteristics. (C) 2000 Elsevier B.V. Ltd and Techna S.r.l. All rights reserved.
Description
Keywords
synthesis, Pechini process, zirconium titanate, ZrTiO4, La containing PZT (PLZT)
Language
English
Citation
Ceramics International. Oxford: Elsevier B.V., v. 26, n. 3, p. 231-236, 2000.
