Characterization of Liquid Phase in (Na0.5K0.5)NbO3 Ceramics with V2O5 Additions

被引：3

作者：

Ryu, Hyun ^{[1
]}

Kim, Young-Heon ^{[1
]}

Lee, Hwack-Joo ^{[1
]}

Cho, Yang-Koo ^{[1
]}

Nahm, Sahn ^{[2
]}

机构：

[1] Korea Res Inst Stand & Sci, Div Ind Metrol, Taejon 305340, South Korea

[2] Korea Univ, Dept Mat Sci & Engn, Seoul 136701, South Korea

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2009年 / 48卷 / 09期

关键词：

FREE PIEZOELECTRIC CERAMICS; 0.95(NA0.5K0.5)NBO3-0.05BATIO(3) CERAMICS; SINTERING TEMPERATURE; KNBO3; CERAMICS; MICROSTRUCTURE; NIOBATE; CUO;

D O I：

10.1143/JJAP.48.091405

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The characterizations of the microstructure and the chemical compositions on (Na0.5K0.5)(Nb0.93V0.07)O-3 ceramics system sintered at 900 degrees C for 8 h were carried out using high resolution transmission electron microscopy (HRTEM), energy filtered (EF) TEM, and energy dispersive spectroscopy (EDS). The liquid phase was found at the triple junction of the grains and abnormal grain growth occurred in the presence of liquid phase. The liquid phase has formed by the melting of V2O5 at the sintering temperature. The presence of V element in liquid phase was confirmed by EDS analyses. The interface between the matrix phase and the liquid phase was atomically flat and consists of a stepped ledge structure of one or two atomic height. The KVO3 phase which may be formed during the cooling of the specimens was observed at these interfaces and have a good orientation relation with the matrix. (C) 2009 The Japan Society of Applied Physics 10.1143/JJAP.48.091405

引用

页码：0914051 / 0914054

页数：4

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