高等学校化学学报 ›› 1991, Vol. 12 ›› Issue (12): 1568.

• 研究论文 • 上一篇    下一篇

溶胶-凝胶法制备Bi-Pb-Sr-Ca-Cu-O微粉

许勤论, 彭定坤, 孟广耀, 俞东, 别利剑, 尉征慧, 杨丽   

  1. 中国科技大学材料系、结构成分分析中心, 合肥, 230026
  • 收稿日期:1990-11-02 出版日期:1991-12-24 发布日期:1991-12-24
  • 通讯作者: 许勤论

Preparation of Bi-Pb-Sr-Ca-Cu-O Micro-powder by Sol-Gel Method

Xu Qin-lun, Peng Ding-kun, Meng Guang-yao, Yu Dong, Bie Li-jian, Wei Zheng-hui, Yang Li   

  1. Department of Materials Science and Center of Structure and Element Analysis, University of Science and Technology of China, Hefei, 230026
  • Received:1990-11-02 Online:1991-12-24 Published:1991-12-24

摘要: 以金属醋酸盐为原料,用溶胶-凝胶技术制备了Bi-Pb-Sr-Ca-Cu-O微粉,并用TG、DTA、IR、XRD和TEM等手段对Bi1.85Pb0.35Sr1.9Ca2Cu3.1Oy粉末的热分解和晶化行为以及粉末粒度进行了分析测试,并用此微粉制备出以2223相为主要物相、零电阻为105K的高温陶瓷超导体。

关键词: 溶胶-凝胶法, 微粉, 高温陶瓷超导体

Abstract: This paper reports the preparation processes of Bi-Pb-Sr-Ca-Cu-Omicro-powder by Sol-Gel method, using metal acetates as starting materials. Wanalyzed the mechanisms of decomposition of synthesized powders and their crystallization behavior by means of thermo-gravimetric analysis, differential thermal analysis, infrared spectra and X-ray diffraction. Also we determined the sizes of powder decomposed at different temperatures by using transmission electron microscope. Meanwhile a high -Tcceramic superconductor which has 2223 as the main phase and zero resistance 105Kwas fabricated by using these micro-powders.

Key words: Sol-gel method, Micron-powder, High-Tc ceramic superconductor

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