首页> 外文期刊>Progress in Palliative Care >Synthesis of vanadium carbonitride nanopowders from solution derived precursor via carbothermal reduction
【24h】

Synthesis of vanadium carbonitride nanopowders from solution derived precursor via carbothermal reduction

机译:碳热还原法从溶液衍生的前驱体合成碳氮化钒纳米粉体

获取原文
获取原文并翻译 | 示例
       

摘要

A study on the carbothermal synthesis of nanopowders vanadium carbonitride was conducted by using a solution derived precusor mixture of ammonium vanadate (NH4VO3) and nanometre sized carbon black in a vacuum carbon tube furnace with gaseous nitrogen. The effect of isothermal treatment time ranging from 0˙5 to 2 h at a sintering temperature 1373 K was studied. The particles obtained in this work were characterised by X-ray diffraction, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results show that VC1-xNx particles prepared at 1373 K for 1 h isothermal time are composed of a single phase and distributed homogeneously, exhibiting a spherical shape with an average particle size of ∼90 nm. The x value as a function of [N]/([C]+[N]) of different samples is given by Vegard's law, depending on the precise lattice parameter. The possible mechanism for the process is also discussed.
机译:纳米碳粉钒的碳热合成研究是在真空碳管炉中,在气态氮的作用下,使用钒酸铵(NH4VO3)和纳米级炭黑的溶液先驱体混合物进行的。研究了在烧结温度1373 K下等温处理时间为0˙5到2 h的影响。通过X射线衍射,扫描电子显微镜(SEM)和透射电子显微镜(TEM)表征在这项工作中获得的颗粒。结果表明,在1373 K下等温1 h制备的VC1-xNx颗粒由单相组成且分布均匀,呈球形,平均粒径约为90 nm。根据精确晶格参数,通过Vegard定律给出x值作为不同样本的[N] /([C] + [N])的函数。还讨论了该过程的可能机制。

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