Phase development during mixed-oxide processing of a [Na0.5K0.5NbO3]1-x-[LiTaO3]x powder

被引：3

作者：

Skidmore, T. A. ^{[1
]}

Stevenson, T. ^{[1
]}

Comyn, T. P. ^{[1
]}

Milne, S. J. ^{[1
]}

机构：

[1] Univ Leeds, Inst Mat Res, Leeds LS2 9JT, W Yorkshire, England

来源：

HIGH-PERFORMANCE CERAMICS V, PTS 1 AND 2 | 2008年 / 368-372卷

关键词：

chemical reaction; environmentally benign; piezoelectric;

D O I：

10.4028/www.scientific.net/KEM.368-372.1886

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：

Powders of the solid solution series [Na0.5K0.5NbO3](1-x) - [LiTaO3](x) with x = 0.06, are shown to transform from an orthorhombic to a tetragonal crystal system as calcination temperature is increased in the range 850 degrees C to 1100 degrees C. Addition of 3 wt% of each alkali carbonate prior to calcination allows retention of the orthorhombic phase to 1100 degrees C. The latter changes in phase content are attributed to a partial compensation of alkali oxide volatilisation losses. The approach of adding extra alkali carbonates lead to an increase in d(33) coefficient in sintered ceramics.

引用

页码：1886 / 1889

页数：4