+高级检索
空气气氛下碳热还原筛分法制备MagnéliTi n O2 n -1
作者:
作者单位:

1.云南师范大学,云南 昆明 650500;2.攀枝花学院,四川 攀枝花 617000

作者简介:

通讯作者:

中图分类号:

基金项目:

国家自然科学基金资助(U1802257)


Preparation of Magnéli Phase Ti n O2 n -1 by Carbothermal Reduction Sieving Method in Air Atmosphere
Author:
Affiliation:

1.Yunnan Normal University, Kunming 650500, China;2.Panzhihua University, Panzhihua 617000, China

Fund Project:

National Natural Science Foundation of China (U1802257)

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    介绍了一种在空气气氛中通过碳热还原筛分法制备Magnéli相(TinO2n-1,4<n<10)低价钛氧化物的方法,研究了还原温度和还原时间对还原产物的物相、电阻率的影响。结果表明,提高还原温度和延长还原时间有利于将TiO2还原为Magnéli相TinO2n-1。将Magnéli相TinO2n-1 (n=4,5) 粉末在1350 ℃下干燥20 min,通过扫描电子显微镜观察,其粒径为0.5~8 μm。在还原温度为1350 ℃时,还原产物的电阻率随还原时间的延长而显著降低。在1350 ℃下还原50 min的产物的电阻率最小,为79.3 Ω?cm,其物相组成几乎全部为Ti3O5

    Abstract:

    A novel method for fabricating Magnéli phase (MP) TinO2n-1 (4<n<10), carbothermal reduction sieving, in air atmosphere was introduced. The influence of the reduction temperature and reduction time on the phase structure and resistivity of reduction product was investigated. The results show that increasing the reduction temperature and prolonging the reduction time are beneficial for the reduction of TiO2 to MP TinO2n-1. MP TinO2n-1 (n=4, 5) powder was obtained after reduction at 1350 °C for 20 min, and its particle size is 0.5~8 μm according to results of scanning electron microscopy analysis. Resistivity of the reduction product is decreased significantly with prolonging the reduction time at 1350 °C. The minimum resistivity of 79.3 Ω?cm is achieved for the product after reduction at 1350 °C for 50 min, and the phase composition is mainly Ti3O5.

    参考文献
    相似文献
    引证文献
引用本文

侯静,杨培志,郑勤红,吴恩辉,李军.空气气氛下碳热还原筛分法制备MagnéliTi n O2 n -1 [J].稀有金属材料与工程,2021,50(11):3824~3827.[Hou Jing, Yang Peizhi, Zheng Qinhong, Wu Enhui, Li Jun. Preparation of Magnéli Phase Ti n O2 n -1 by Carbothermal Reduction Sieving Method in Air Atmosphere[J]. Rare Metal Materials and Engineering,2021,50(11):3824~3827.]
DOI:10.12442/j. issn.1002-185X.20201007

复制
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2020-12-29
  • 最后修改日期:2021-06-20
  • 录用日期:2021-07-09
  • 在线发布日期: 2021-11-25
  • 出版日期: 2021-11-24