高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (9): 1597.

• 研究论文 • 上一篇    下一篇

Sn0.5Ti((0.5)O2固溶体的溶胶-凝胶法制备、表征及其热稳定性研究

刘凤敏1, 全宝富1, 陈丽华1, 刘志强1, 于连香2, 刘奎学1   

  1. 1. 吉林大学电子科学与工程学院,
    2. 化学学院, 长春130023
  • 收稿日期:2004-02-18 出版日期:2004-09-24 发布日期:2004-09-24
  • 基金资助:

    国家自然科学基金(批准号:60174033)资助

Preparation, Characterization and Thermal Stability of the Solid Solution Sn0.5Ti0.5O2 Prepared by Sol-gel Method

LIU Feng-Min1, QUAN Bao-Fu1, CHEN Li-Hua1, LIU Zhi-Qiang1, YU Lian-Xiang2, LIU Kui-Xue1   

  1. 1. College of Electronic Science and Engineering,
    2. College of Chemistry, Jilin University, Changchun 130023, China
  • Received:2004-02-18 Online:2004-09-24 Published:2004-09-24

摘要: 采用溶胶-凝胶法制备了Sn0.5Ti0.5O2固溶体.用X射线衍射(XRD)、差热分析(DTA)和红外(IR)技术对材料的结构和热稳定性进行了分析表征.固溶体的热稳定性与起始反应温度有关,在40℃水浴温度下制备的凝胶经1000℃烧结,发生了相分解,出现了富Sn和富Ti相,而在80℃水浴温度下制备的凝胶经1200℃烧结也不发生相分解,仍以Sn0.5Ti0.5O2相存在,而且用差热分析也得到了同样的结论.

关键词: 溶胶-凝胶法, Sn0.5Ti0.5O2, 热稳定性, 相分解

Abstract: Sn0.5Ti0.5O2 solid solution was prepared by sol-gel method. The structure and thermal stability of the Sn0.5Ti0.5O2 solid solution were investigated by X-ray diffraction(XRD), differential thermal analysis(DTA) and infrared spectra(IR) methods. The thermal-stability of the solid solution Sn0.5Ti0.5O2 depends on the original water bath temperature. In the XRD patterns, the phase separation phenomenon was observed in the gel samples prepared over a 40℃ water bath and sintered at 1 000℃ and the Sn-rich and Ti-rich phases appeared. The solid solution synthesized at 60℃ water bath temperatures had a good thermal-stability after being sintered at 1 000℃ and the phase separation phenomenon appeared after being sintered at 1200℃. But the phase separation phenomenon wasn′t observed in the 80℃ gel samples prepared over a 80℃ water bath and sintered at 1 200℃ and the only existent phase was still ascribed to the solid solution Sn0.5Ti0.5O2. Furthermore, the DTA curves of three samples synthesized at different water bath temperatures show that the sample prepared over a 40℃ water bath has the worst thermal-stability and the sample prepared over a 80℃ water bath has the best thermal-stability.

Key words: Sol-gel method, Sn 0.5Ti 0.5O2, Thermal-stability, Phase separation

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