东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2006, Vol. 27 ›› Issue (3): 288-291.DOI: -

• 论著 • 上一篇    下一篇

用Gd_2O_3和B_4C制备GdB_6过程中的化学反应

吴文远;徐璟玉;孙树臣;涂赣峰;   

  1. 东北大学材料与冶金学院;东北大学材料与冶金学院;东北大学材料与冶金学院;东北大学材料与冶金学院 辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004
  • 收稿日期:2013-06-23 修回日期:2013-06-23 出版日期:2006-03-15 发布日期:2013-06-23
  • 通讯作者: Wu, W.-Y.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50574031);;

Chemical reaction in the process of preparing GdB6 with Gd2O3 and B4C

Wu, Wen-Yuan (1); Xu, Jing-Yu (1); Sun, Shu-Chen (1); Tu, Gan-Feng (1)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China
  • Received:2013-06-23 Revised:2013-06-23 Online:2006-03-15 Published:2013-06-23
  • Contact: Wu, W.-Y.
  • About author:-
  • Supported by:
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摘要： 研究了Gd2O3与B4C在碳管炉中,Ar气氛下制备GdB6过程中的化学反应.XRD和TG-DTA实验研究结果表明:在367~458℃期间,主要是样品中残留的杂质C和O2发生反应;800~1 200℃时,Gd2O3与B4C生成GdBO3,GdBC和B;并同时存在GdBO3,GdBC与B4C生成GdB4;Gd2O3与B4C生成GdB6.随温度升高,GdB4生成反应速度加快.1 470℃时,GdB4和B反应生成GdB6,GdB6的生成率随反应时间延长而增加,6 h时生成率达到了97.8%.

关键词: 化学反应, 硼化钆, 碳化硼, 氧化钆, XRD, TG-DTA

Abstract: The chemical reaction in the process of preparing GdB6 with Gd2O3 and B4C in graphite tube furnace in argon atmosphere was studied. XRD and TG-DTA results showed that the reaction is mainly between the residual impurity C in sample and O2 at the temperature of 367-458°C. In the range from 800°C to 1200°C, there are three reactions in the process, i.e., between Gd2O3 and B4C to produce GdBO3, GdBC and B; among GdBO3 GdBC and B4C to produce GdB4; between Gd2O3 and B4C to produce GdB6. With the rising temperature, the reaction speed of GdB4 increases. The GdB6 is prepared by the reaction of GdB4 with the element B, of which the content of GdB6 is up to 97.8% in 6 h and increases with the prolonged reaction time.

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