摘要
利用改性Pechini法制备了BaTi_(2)O_(5)(BT2)粉体,采用傅里叶红外光谱仪、X射线衍射仪(XRD)、冷场发射扫描电子显微镜(FESEM)和同步热分析仪测试了BT2粉体的物相结构与反应机理。结果表明,采用以柠檬酸为螯合剂的溶胶制备BT2粉体的最佳煅烧温度为850℃。粉体经1200℃的常压固相烧结得到BT2陶瓷,通过FESEM、电子比重天平、XRD、LCR数字电桥和准静态d_(33)测量仪测试了BT2陶瓷的物相结构与电学性能,结果显示BT2陶瓷具有较高的致密度、较好的结晶度与优异的电学性能。本研究为溶胶-凝胶法制备BT2陶瓷材料的提供了良好的借鉴。
BaTi_(2)O_(5)(BT2)particles are prepared by a modified Pechini method,the phase structure and reaction mechanism are analyzed by Fourier transform infrared spectroscopy,X-ray diffraction(XRD),field emission scanning electron microscope(FESEM),and simultaneous thermal analyzer.The results indicate the optimum calcination temperature of preparing BT2 powder by using citric acid as chelating agent is 850℃.BT2 ceramics are obtained from the powders by solid sintering at 1200℃at mospheric pressure.The ceramics phase structure and electrical properties are investigated by FESEM,electron specific gravity balance,XRD,LCR digital bridge,and quasistatic piezoelectric constant testing meter.The results show that BT2 displays high densification and perfect crystallinity as well as the excellent electrical properties.This study can provide a reference for the preparation of BT2 ceramic materials by sol-gel method.
作者
李水云
田永尚
高岩
王淼
刘鹏
LI Shuiyun;TIAN Yongshang;GAO Yan;WANG Miao;LIU Peng(Henan Key Laboratory of Utilization of Non-metallic Mineral in the South of Henan,Xinyang Normal University,Xinyang 464000,China)
出处
《信阳师范学院学报(自然科学版)》
CAS
北大核心
2022年第2期280-284,共5页
Journal of Xinyang Normal University(Natural Science Edition)
基金
国家自然科学基金项目(51902279)
河南省青年人才托举工程项目(2021HYTP019)
河南省高等学校青年骨干教师培养计划(2021-GGJS-097)
河南省重点研发与推广专项(科技攻关)(222102230024)
信阳师范学院研究生教育教学改革研究与实践项目。