Bi2O3 as an effective sintering aid for La(Sr)MnO3 powder prepared by autoignition route

被引：41

作者：

Chakraborty, A ^{[1
]}

Maiti, HS ^{[1
]}

机构：

[1] Cent Glass & Ceram Res Inst, Electroceram Lab, Calcutta 700032, W Bengal, India

来源：

CERAMICS INTERNATIONAL | 1999年 / 25卷 / 02期

关键词：

microstructure; lanthanum manganite; sintering aid; point defect;

D O I：

10.1016/S0272-8842(98)00010-8

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：

Sintering characteristics of the Sr-doped lanthanum manganite [La(Sr)MnO3] powder, prepared by autoignition of citrate-nitrate gel, have been studied by measuring density and evaluation of microstructural information. Bi2O3 is found to be an effective sintering aid for this material. Increased concentration of point defects arising from substitution of Bi in La site is the plausible cause of enhanced sintering. Measurement of electrical conductivity and thermal expansion coefficient indicate that Bi2O3 addition does not have any significant effect on these properties. (C) 1999 Elsevier Science Limited and Techna S.r.l. All rights reserved.

引用

页码：115 / 123

页数：9

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