SYNTHESIS AND COMPOSITION CHARACTERIZATION OF K0.5Na0.5NbO3-KSr2Nb5O15 CERAMICS

被引：0
|
作者：
Liu, Liangliang [1 ]
Guo, Zhuangzhuang [1 ]
Wang, Yongqiang [1 ]
Jiang, Haiwei [1 ]
机构：
[1] Taiyuan Univ Technol, Coll Mat Sci & Engn, Taiyuan 030024, Shanxi, Peoples R China
来源：
CERAMICS-SILIKATY | 2018年 / 62卷 / 03期
基金：
中国国家自然科学基金;
关键词：
KSr2Nb5O15; Ferroelectric ceramics; Microstructure; Dielectric property; STRONTIUM;
D O I：
10.13168/cs.2018.0021
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：
KSr2Nb5O15 modified potassium sodium niobate ceramics ((1-x)KNN-xKSN) were fabricated by a pressure-less solid-state method, using Bi as a sintering aid. Synthesis and composition characterization of the (1-x)KNN-xKSN ceramics were investigated. It was found that the KSN addition was favorable to the densification of the (1-x)KNN-xKSN ceramics due to the improvement of sintering temperature and the absence of abnormal grain growth. Induced by KSN, the KNN phase structure spontaneously transformed from perovskite to tetragonal tungsten bronze. The result suggested that for preparing KNN-based ceramics with high performance it is necessary to control the phase transformation. This study also opens up a new avenue for the investigation of the relationship between structure and performance in KNN ceramics.
引用
收藏
页码：274 / 278
页数：5
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