Chemical synthesis of K0.5Na0.5NbO3 ceramics and their electrical properties

被引：29

作者：

Yang, Haibo ^{[1
]}

Lin, Ying ^{[1
]}

Wang, Fen ^{[1
]}

Luo, Hongjie ^{[2
]}

机构：

[1] Shaanxi Univ Sci & Technol, Sch Mat Sci & Technol, Xian 710021, Peoples R China

[2] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China

来源：

MATERIALS AND MANUFACTURING PROCESSES | 2008年 / 23卷 / 05期

基金：

中国国家自然科学基金;

关键词：

chemical synthesis; dielectric properties; dielectric loss; electrical properties; lead; free piezoelectric ceramics; microstructure; (K0.5Na0.5)NbO3; permittivity; phase transition; piezoelectric coefficient; piezoelectric properties; planar coupling coefficient; polymerized complex method; P-E hysteresis loops;

D O I：

10.1080/10426910802104070

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Powders of K0.5Na0.5NbO3 (KNN) were prepared by the Polymerized Complex Method (PC method), based on the Pechini-type reaction route. The crystallization process of KNN during the calcination of an amorphous precursor was observed, using TG-DSC analysis and X-ray powder diffraction. After calcination the powders were ball milled, pressed into pellets, and sintered at 1100 degrees C, which is lower than the sintered temperature of the conventional solid-state method. Using this procedure, we achieved relatively high-density and very homogeneous KNN ceramics. The electric properties of the ceramics were investigated. The results showed that these values are superior to those of sintered KNN ceramic counterparts made by the conventional solid-state method.

引用

页码：489 / 493

页数：5

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