摘要：结合SEM、TG-DSC、X射线衍射和粒度分析测试方法研究球磨时间对TiO₂-V₂O₅-C还原过程的影响。结果表明:随着球磨时间的延长, 混合粉料的细颗粒团聚导致其平均粒径略有增加;当球磨时间从8 h延长至16 h, 混合粉料在加热过程中的失质量曲线向低温方向偏移, 还原过程加快;继续延长球磨时间至24 h, 失质量和吸热变化基本一致;当球磨时间为16 h时, 混合粉料经逐级脱氧还原和固溶反应合成Ti_0.8V_0.2C。

关键词：球磨；物相；还原过程

Abstract：The effects of milling time on the reduction process of TiO₂-V₂O₅-C mixtures were investigated using SEM, TG-DSC, X-ray diffraction and particle size analysis. Results show that the mean particle size of milled mixtures increases slightly due to agglomeration with increasing milling time. When the milling time increases from 8 h to 24 h, the mass loss curves shift to lower temperatures, indicating that the reduction process is accelerated.When the milling time is further increased to 24 h, the change of mass loss and endothermic peaks varys little. When the milling time is 16 h, deoxidization gradually occurrs and Ti_0.8V_0.2C forms.

Keywords：milling；phase；reduction process