Preparation of Gd2O3-doped ZrO2 by polymeric precursor techniques

被引：42

作者：

Muccillo, ENS ^{[1
]}

Rocha, RA ^{[1
]}

Muccillo, R ^{[1
]}

机构：

[1] IPEN CNEN SP, CCTM, Ctr Multidisciplinar Desenvolvimento Mat Ceram, BR-05422970 Sao Paulo, Brazil

来源：

MATERIALS LETTERS | 2002年 / 53卷 / 4-5期

基金：

巴西圣保罗研究基金会;

关键词：

solid electrolytes; thermal analysis; chemical synthesis; scanning electron microscopy; Gd oxide (Gd2O3); zirconium oxide (Z(r)O(2)); Gd2O3 : Z(r)O(2) solid solutions;

D O I：

10.1016/S0167-577X(01)00506-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Zirconia- 10 mol% gadolinia was prepared by several techniques involving polymeric precursors: the Pechini, the PVA and the amorphous citrate techniques. The aim of this work is to determine among these techniques the most suitable to obtain solid solutions with high chemical homogeneity and high sinterability. The main results show different paths for decomposition of the Polymeric precursors, Calcined powders presented similar particle size distribution curves although they are related with the distribution of agglomerated particles. Agglomerate morphology is also quite different as observed by scanning electron microscopy, and the powder prepared by the citrate (Pechini) technique is found to be chemically inhomogeneous. The PVA technique is the less complex route for solid solution synthesis. The higher densification was obtained for powders prepared by the amorphous citrate technique. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：353 / 358

页数：6

共 16 条

[1] PREPARATION OF TETRAGONAL ZRO2-GD2O3 POWDERS [J].