东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2003, Vol. 24 ›› Issue (3): 272-275.DOI: -

• 论著 • 上一篇    下一篇

淀粉还原氢化钛制备Ti(C;N)纳米粉

李喜坤;修稚萌;孙旭东;郑龙熙   

  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;东北大学资源与土木工程学院 辽宁沈阳110004
  • 收稿日期:2013-06-23 修回日期:2013-06-23 出版日期:2003-03-15 发布日期:2013-06-23
  • 通讯作者: Li, X.-K.
  • 作者简介:-
  • 基金资助:
    教育部跨世纪优秀人才培养计划基金资助项目 ;;

Synthesis of titanium carbonitride nanopowders

Li, Xi-Kun (1); Xiu, Zhi-Meng (1); Sun, Xue-Dong (1); Zheng, Long-Xi (2)   

  1. (1) Sch. of Mat. and Metall., Northeastern Univ., Shenyang 110004, China; (2) Sch. of Resource and Civil Eng., Northeastern Univ., Shenyang 110004, China
  • Received:2013-06-23 Revised:2013-06-23 Online:2003-03-15 Published:2013-06-23
  • Contact: Li, X.-K.
  • About author:-
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摘要： 研究了用淀粉还原氢化钛制备碳氮化钛纳米粉的工艺及反应机理·结果表明 ,在实验范围内 ,降低合成温度 ,缩短保温时间或提高氮气流量有利于形成氮含量高的碳氮化钛粉末·通过控制合成温度和保温时间 ,可以控制Ti(C1-xNx)中的碳氮比 ,得到不同x值的碳氮化钛粉末·在 1 75 0℃ ,保温 2h,氮气流量为 5L/min条件下 ,可获得颗粒尺寸为 40～ 80nm的单相Ti(C0 .5N0 .5)粉末·

关键词: 氢化钛, 淀粉, 碳氮化钛, 纳米粉, 还原, 碳氮比

Abstract: Carbothermal synthesis of titanium carbonitride Ti(C1-xNx)/nanopowders from titanium hydride powder and starch under nitrogen environment was studied. The synthesis was carried out in a graphite furnace at different temperatures for different holding time in an atmosphere of flowing nitrogen. The results indicate that nitrogen content x in the titanium carbonitride Ti(C1-xNx) powder decreases with increasing reaction temperature and time and decreasing nitrogen partial pressure within a certain range used in the experiment. It is possible to control the nitrogen content in the titanium carbonitride powders by optimizing the processing parameters. A nanocrystalline of titanium carbonitride Ti(C0.5N0.5) powder with particle diameters in the range of 40-80 nm has been produced at 1750°C for 2 hours in flow nitrogen of 5 L/min.

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