English

应用科学学报 ›› 1994, Vol. 12 ›› Issue (2): 95-100.

• 论文 •    下一篇

氧化碲单晶热膨胀行为的实验研究

陆昌伟, 奚同庚, 陈云仙, 杨雪华, 徐一斌, 浦志芬   

  1. 中国科学院上海硅酸盐研究所
  • 收稿日期:1992-05-28 修回日期:1992-09-10 出版日期:1994-06-30 发布日期:1994-06-30
  • 基金资助:
    国家自然科学基金

EXPERIMENTAL STUDIES ON THE THERMAL EXPANSION BEHAVIOUR OF SINGLE CRYSTAL TELLURIUM DIOXIDE LU CHANGWEI XI TONGGENG

LU CHANGWEI, XI TONGGENG, CHEN YUNXIAN, YANG XUEHUA, XU YIBIN, PU ZHIFEN   

  1. Shanqhai Institute of Ceramics, Chinese Acadcmy of Sciences
  • Received:1992-05-28 Revised:1992-09-10 Online:1994-06-30 Published:1994-06-30

PDF

85

被引次数

1

摘要： 用热膨胀仪(Dilatometer)、热综合分析仪(Tg-DTA)、X射线衍射仪(XRD)对TeO2单晶的热膨胀行为进行了实验研究。首次报道了用顶杆法测定370~500℃、沿α和c轴向的TeO2单晶热膨胀系数αα和αc;用Tg-DTA法测定TeO2的熔点并对其热膨胀系数和熔点的关系作了讨论;还从TeO2单晶的晶体结构和解理特性以及α轴和c轴的化学键键强比较对其热膨胀的各向异性行为作了进一步探讨。

关键词: 热膨胀, 晶体结构, TeO2单晶, 熔点

Abstract: In this paper,the thermal expansion behaviour of the TeO2 single crystal is studied experimentally by the push-rod dilatometery Tg-DTA and X-Ray diffraction methods.It is the first time to measure the thermal expension coefficient of the TeO2 single crystal along a and c axes in the temperature region of 370~500℃ by the push-rod dilatometer method.Furthermore,the anisotropy of the thermal expansion of the TeO2 single crystal is studied according to the structure and the characteristic of cleavage as well as the comparison of the chemical bonding strength of a and c axes.

Key words: crystal structure, TeO2 single crystal, thermal expansion, melting point