Effect of Bi2O3 and Sb2O3 on the grain size distribution of ZnO

被引：3

作者：

Yeh-Wu Lao

Shu-Ting Kuo

Wei-Hsing Tuan

机构：

[1] National Taiwan University,Department of Materials Science and Engineering

来源：

Journal of Electroceramics | 2007年 / 19卷

关键词：

Zinc oxide; Grain growth; Varistor;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

In the present study, the effect of Bi2O3 and Bi2O3+Sb2O3 additions on the size distribution of ZnO grains is investigated. Without the usage of a powder bed, the addition of Bi2O3 provides a transient liquid phase that enhances the densification. The residual Bi segregates alters the surface/grain boundary energy ratio, which encourages the ZnO grains to grow. The size variation is also increased. The addition of both Bi2O3 and Sb2O3 induces the formation of pyrochlore, spinel and inversion boundary. Their presence reduces not only the average grain size, but also the size variation.

引用

收藏

页码：187 / 194

页数：7

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