Sinterability and piezoelectric properties of KNbO3 ceramics after substituting Pb and Na for K

被引：84

作者：

Tashiro, S ^{[1
]}

Nagamatsu, H ^{[1
]}

Nagata, K ^{[1
]}

机构：

[1] Natl Def Acad, Dept Mat Sci & Engn, Yokosuka, Kanagawa 2398686, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 2002年 / 41卷 / 11B期

关键词：

piezoelectricity; potassium niobate; sodium niobate; lead oxide; sinterability; grain-size;

D O I：

10.1143/JJAP.41.7113

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Potassium niobate (KNbO3) ceramics are usually porous due to their poor sinterabilty under ordinary firing in air, although the single crystal exhibits a large amount of piezoelectricity. We found a marked improvement in the sinterability of KNbO3 ceramics on substituting a small amount of Pb for K. However, the amount of piezoelectricity of the ceramics was small due to their fine grains (< 0.2 mum). In order to realize large grains, we substituted Na and Pb for K, and fired the ceramics for long periods of time.

引用

页码：7113 / 7118

页数：6

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