Influence of tin oxide addition in the morphologic characteristics of zinc oxide powders synthesized by Pechini's method.

被引：0

作者：

Pereira, GJ ^{[1
]}

Gouvea, D ^{[1
]}

Hiraoka, SM ^{[1
]}

机构：

[1] Escola Politecn Univ Sao Paulo, Dept Met & Mat Engn, Lab Proc Ceram, BR-05580900 Sao Paulo, SP, Brazil

来源：

ADVANCED POWDER TECHNOLOGY IV | 2005年 / 498-499卷

关键词：

zinc oxide; Pechini; segregation; synthesis;

D O I：

10.4028/www.scientific.net/MSF.498-499.704

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：

Zinc oxide is widely used in semiconductors fabrication, pigments and mainly in varistors. The electrical properties of ZnO based varistors are related to the grain boundary characteristics, and it can be modified using additives. In this work, zinc oxide based powders were prepared by chemical route derived from the Pechini's method, and small amounts of tin ions were added to the system. The XRD measurements showed that the tin oxide not forming solid solution in the bulk, and it was observed that the increasing of tin concentration causes an increasing of the surface area at isothermal conditions of calcination. Once the isoelectric point was dislocated to more acid values, the hypothesis of segregation onto surface was considered.

引用

页码：704 / 709

页数：6

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