• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Diffusion and Defect Data. Solid State Data, Part A. Defect and Diffusion Forum >Effects of Mechanical Activation during the Synthesis of Tungsten Carbide Powders by Carbothermic Reduction of Tungsten Oxide
【24h】

Effects of Mechanical Activation during the Synthesis of Tungsten Carbide Powders by Carbothermic Reduction of Tungsten Oxide

机译：碳化钨热还原法合成碳化钨粉过程中的机械活化作用

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this work, the effects of mechanical milling on the extent of reduction were investigated to give an overview of potential improvements in the preparation of WC. A mixture of graphite and tungsten oxide (WO_3) was mechanically milled together for 10 h. The as-milled powder and un-milled powder were investigated by thermal analysis, isothermal treatment, and X-ray diffraction to determine the effect of milling on the carbothermal reduction of WO_3 to tungsten carbide (WC). The as-milled powder underwent a rapid reduction reaction at about 150°C lower than the un-milled powder. The reduction sequence to WC was illustrated to differ for the two powders. The milled powder showed complete reduction to WC in 1 h at 1215°C whereas the un-milled powder was incompletely reduced. Finally, WC powder was readily achieved by carbothermic reduction of mechanical activated WO_3 and graphite, leaving its grains nano-sized.
机译：在这项工作中，研究了机械研磨对还原程度的影响，以概述WC制备中潜在的改进。将石墨和氧化钨（WO_3）的混合物机械研磨10小时。通过热分析，等温处理和X射线衍射研究了研磨后的粉末和未研磨后的粉末，以确定研磨对WO_3碳热还原为碳化钨（WC）的影响。研磨后的粉末比未研磨的粉末在约150℃下进行快速还原反应。说明两种粉末对WC的还原顺序不同。研磨后的粉末在1215°C下在1小时内显示完全还原为WC，而未研磨后的粉末未完全还原。最后，通过对机械活化的WO_3和石墨进行碳热还原，可以很容易地获得WC粉末，而其晶粒为纳米级。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号