Microstructure and elastic modulus of ceramic Li x Na1-x NbO3 perovskite solid solutions prepared at 6 GPa

被引：2

作者：

Palatnikov, M. N. ^{[1
]}

Shcherbina, O. B. ^{[1
]}

Efremov, V. V. ^{[1
]}

Sidorov, N. V. ^{[1
]}

Salak, A. N. ^{[2
]}

机构：

[1] Russian Acad Sci, Kola Sci Ctr, Tananaev Inst Chem & Technol Rare Elements & Mine, Apatity 184209, Murmansk Oblast, Russia

[2] Univ Aveiro, Dept Ceram & Glass Engn CICECO, P-3810193 Aveiro, Portugal

来源：

INORGANIC MATERIALS | 2010年 / 46卷 / 12期

基金：

俄罗斯基础研究基金会;

关键词：

Ceramic materials - Elastic moduli - Lithium compounds - Microstructure - Niobium compounds - Perovskite - Sintering - Sodium compounds;

D O I：

10.1134/S0020168510120149

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The microstructure of ceramic samples of high-pressure ferroelectric Li (x) Na1 - x NbO3 (x = 0.17, 0.25) perovskite solid solutions has been studied in relation to synthesis temperature and composition. The elastic properties (Young's modulus) of the high-pressure Li (x) Na1 - x NbO3 (x = 0.125, 0.17, 0.25) solid solutions have been studied for the first time by a contact technique. The results demonstrate that, with increasing sintering temperature, the Young's modulus of the high-pressure Li (x) Na1 - x NbO3 solid solutions at singular concentration points (x (i) = 0.125 and 0.25, Li/Na = 1/7 and 1/3) increases considerably, whereas that of Li0.17Na0.83NbO3 decreases markedly, which seems to be related to the recrystallization behavior of ordered and disordered solid solutions at high pressures.

引用

页码：1348 / 1352

页数：5

共 8 条

[1]

Gogolinskii K.V., 1998, ZAVODSK LAB, V64, P30

[2] HOT-PRESSING OF SODIUM LITHIUM-NIOBATE CERAMICS WITH PEROVSKITE-TYPE STRUCTURES [J].