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Titolo:
Investigations of co-existence region in lead zirconate-titanate solid solutions: X-ray diffraction studies
Autore:
Boutarfaia, A;
Indirizzi:
Univ Biskra, Inst Sci Exactes, Mexico City 07000, DF, Mexico Univ Biskra Mexico City DF Mexico 07000 es, Mexico City 07000, DF, Mexico
Titolo Testata:
CERAMICS INTERNATIONAL
fascicolo: 6, volume: 26, anno: 2000,
pagine: 583 - 587
SICI:
0272-8842(2000)26:6<583:IOCRIL>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
CERAMICS;
Keywords:
sintering; microstructure; X-ray methods; PZT; co-existence of phases in PZT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: Boutarfaia, A Univ Biskra, Inst Sci Exactes, BP 145, Mexico City 07000, DF, Mexico Univ Biskra BP 145 Mexico City DF Mexico 07000 0, DF, Mexico
Citazione:
A. Boutarfaia, "Investigations of co-existence region in lead zirconate-titanate solid solutions: X-ray diffraction studies", CERAM INT, 26(6), 2000, pp. 583-587

Abstract

Compositions with varying Zr/Ti ratio in: xPbZrO(3)-yPbTiO(3)-zPb(Fe-1/5, Ni-1/5, Sb-3/5)O-3 such that (x+y+z)=100% and at constant z=10% were prepared by the conventional method of thermal synthesis of mixed-oxides. The characterization of these PZT ceramics was carried out with XRD and SEM. X-raydiffraction is presented to demonstrate the co-existence of the tetragonaland rhombohedral phases. In the present work it is shown that the tetragonal structure persists up to x=43, while the rhombohedral structure appears at x=46. These results suggest that the morphotropic phase boundary lies inthe range 43<x<46 and therefore the width of the morphotropic transition is determined (Delta x=3%). The lattice parameter measurements showed that tetragonal and rhombohedral unit cells of the phases depend on the sinteringtemperature. The effects of sintering temperature on microstructure are studied by means of a scanning electron microscope (SEM). (C) 2000 Elsevier Science Ltd and Techna S.r.l. All rights reserved.

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Documento generato il 28/11/20 alle ore 09:24:51