Paper Title:
Effect of Treatment Process on the Structure and Properties of Sr0.48Ba0.24Ca0.28TiO3-Based Varistor Ceramics
  Abstract

Sr0.48Ba0.24Ca0.28TiO3-based varistor ceramics with an excellent capacitor-varistor multifunctional characteristics (V1mA = 11 ~ 49 ν.mm-1, α = 6.1 ~ 11.3, ε r max=3.5×105, tanδmin = 5%) were prepared using conventional solid method. The effect of oxidation temperature and time on structure and electrical properties were investigated. The results show that with increasing the oxidation temperature from 800°C to 900°C, the varistor voltage V1mA and non-linearity coefficient α defining varistor characteristics increase linearly, while the dielectric constant ε r and dielectric loss tanδ decrease linearly. There exists an optimum α value when the specimens were oxidized at 850°C for 3h. This behavior was explained through various defect reactions of dopants.

  Info
Periodical
Key Engineering Materials (Volumes 336-338)
Edited by
Wei Pan and Jianghong Gong
Pages
775-778
DOI
10.4028/www.scientific.net/KEM.336-338.775
Citation
Y. X. Xu, Z. L. Tang, Z. T. Zhang, L. H. Xu, "Effect of Treatment Process on the Structure and Properties of Sr0.48Ba0.24Ca0.28TiO3-Based Varistor Ceramics", Key Engineering Materials, Vols. 336-338, pp. 775-778, 2007
Online since
April 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Long Tu Li, Tian Wang, Xiao Hui Wang, Jing Chang Zhao, Xian Li
Abstract:Dielectric characteristics of strontium titanate based ceramics doped with samarium were investigated within temperature range from –60oC to...
158
Authors: Guang Hui Li, Zhang Lian Hong, Li Xia Peng, Min Quan Wang
Abstract:XRD, SEM, bulk density and dielectric properties measurements were used to investigate the effect of TiO2 nanopowder substitution for...
228
Authors: Athipong Ngamjarurojana, Supon Ananta, Rattikorn Yimnirun
Abstract:The structure and electrical properties of Al2O3-doped 0.2Pb(Zn1/3Nb2/3)O3-0.8Pb(Zr1/2Ti1/2)O3 ceramic, which is the morphotropic phase...
89
Authors: Piyachon Ketsuwan, Anurak Prasatkhetragarn, Supon Ananta, Chien Chih Huang, David P. Cann, Rattikorn Yimnirun
Abstract:The 3 mol% Nb2O5 doped Pb(Zr0.52Ti0.48)O3 with addition of 1-3 mol% Cr2O3 prepared via the solid-state reaction technique have been...
385
Authors: Yun Xia Zhang, Jun Jie Hao, Jun Ting Qi
Building Materials
Abstract:In this paper, the effect of Nb2O5 on the microstructure and dielectric properties of BaTiO3-based ceramics...
1108