无机材料学报

• 研究论文 • 上一篇    下一篇

PbTiO3微晶玻璃陶瓷的结构和热释电性能研究

翟继卫; 姚熹; 张良莹   

  1. 同济大学功能材料研究所, 上海 200092
  • 收稿日期:2000-01-24 修回日期:2000-03-22 出版日期:2001-01-20 网络出版日期:2001-01-20

Structure and Pyroelectric Properties of PbTiO3 Glass-Ceramics by Sol-Gel Process

ZHAI Ji-Wei; YAO Xi; ZHANG Liang-Ying   

  1. Functional Materials Research Laboratory; Tongji University; Shanghai 200092; Chian
  • Received:2000-01-24 Revised:2000-03-22 Published:2001-01-20 Online:2001-01-20

摘要: 采用溶胶-凝胶方法在Pb-Ti-B-Si-O凝胶玻璃体系中,析出了PbTiO微晶.DTA和X-ray衍射分析表明,随玻璃含量的增加,析晶温度升高.热释电测试结果说明,随着玻璃含量的增加,热释电系数增大;随烧结温度的升高,PbTiO微晶玻璃陶瓷的热释电系数也随之增大.介电温谱的测量则显示,PbTiO陶瓷与PbTiO微晶玻璃陶瓷具有明显的差异.

关键词: PbTiO3, 微晶玻璃, 析晶, 热释电, 介电

Abstract: PbTiO3-SiO2-B2O3 glass-ceramics were prepared by the sol-gel process. DTA and Xray diffraction analysis show that the crystallization temperature of PbTiO3 glass-ceramics is higher than that of PbTiO3 ceramics. As the glass content increasing, their pyroelectric coefficients are increased, and the pyroelectric coefficients are increased with the increase of sintering temperatures. The temperature dependence of the dielectric constant of PbTiO3 ceramics and PbTiO3 glassceramics is different obviously.

Key words: PbTiO3, glass-ceramics, pyroelectric, dielectric

中图分类号: