Synthesis and sintering of Gd-doped CeO2 nanopowders prepared by ultrasonic spray pyrolysis

被引：29

作者：

Goulart, Celso ^{[1
]}

Djurado, Elisabeth ^{[1
]}

机构：

[1] Univ Grenoble 1, Univ Savoie, LEPMI, CNRS,Grenoble INP,UMR 5279, F-38402 St Martin Dheres, France

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2013年 / 33卷 / 04期

关键词：

SOFC; Gd-doped Ceria; Ultrasonic spray pyrolysis; DOE; densification; IONIC-CONDUCTIVITY; ELECTRICAL-PROPERTIES; CERIA NANOPARTICLES; SOLID ELECTROLYTES; IT-SOFC; OXIDE; ZIRCONIA; PARTICLES; CERAMICS; POWDERS;

D O I：

10.1016/j.jeurceramsoc.2012.09.029

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Ultrasonic spray pyrolysis (USP) of nitrate-based precursors was used to fabricate fine and polycrystalline Ce0.8Gd0.2O1.9 (CGO) powders with controlled microstructure in a one-step process varying four spray-pyrolysis parameters: precursor solution concentration, atomizing frequency, carrier gas flow rate, and pyrolysis temperature. A design of experiment (DOE) was used to understand the independent and combined influences of these process parameters on the particle size, particle size distribution and crystallite size. In this study, smaller CGO particles with narrower particle size distribution and finer grain size showed a full densification starting at a low temperature. CGO densification was found to be strongly dependent on CGO powder microstructural properties. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：769 / 778

页数：10

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