Sintering and characterization of PLZT (9/65/35)

被引：30

作者：

Cerqueira, M

Nasar, RS

Leite, ER

Longo, E

Varela, JA

机构：

[1] Univ Fed Rio Grande Norte, Dept Quim, BR-59078970 Natal, RN, Brazil

[2] UFSCar, Dept Quim, BR-13565905 Sao Carlos, SP, Brazil

[3] UNESP, Inst Quim, BR-14800900 Araraquara, SP, Brazil

来源：

CERAMICS INTERNATIONAL | 2000年 / 26卷 / 03期

关键词：

synthesis; Pechini process; zirconium titanate; ZrTiO4; La containing PZT (PLZT);

D O I：

10.1016/S0272-8842(99)00047-4

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 [材料科学与工程]; 080502 [材料学];

摘要：

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 Science Ltd and Techna S.r.l. All rights reserved.

引用

页码：231 / 236

页数：6

共 13 条

[1]

SYNTHESIS OF ULTRA-FINE CRYSTALLINE ZRXTI1-XO4 POWDER BY POLYMERIC PRECURSOR METHOD [J].