Synthesis of tungsten carbide nanopowders by direct carbonization of tungsten oxide and carbon: Effects of tungsten oxide source on phase structure and morphology evolution
作者: Haoyang WuQianyu WangMingli QinRuowei YinZiyue ZhangBaorui JiaXuanhui Qu
作者单位: 1Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, 100083, China
2Beijing Advanced Innovation Center of Materials Genome Engineering, University of Science and Technology Beijing, Beijing, 100083, China
刊名: Ceramics International, 2020, Vol.46 (7), pp.8787-8795
来源数据库: Elsevier Journal
DOI: 10.1016/j.ceramint.2019.12.118
关键词: Tungsten carbideNanopowder synthesisTungsten oxide sourceCarbothermal reductionMorphology
英文摘要: Abstract(#br)In the paper, WC nanopowders are successfully prepared by carbothermal reduction method, and the effect of tungsten oxide source on the phase structure evolution and products properties of the as-synthesized WC nanopowders has been investigated. Four tungsten oxide powders are chosen as tungsten oxide sources, e.g., rods-like WO 3 , WO 3 nanopartiles, WO 3 micro-particles and WO 2.9 micro-particles. Compared with other three tungsten oxide sources, the WO 3 micro-particles possesses small particle size, less agglomerates and good dispersity and the uniform tungsten oxide-carbon mixture after ball milling can be easily obtained. The appropriate tungsten oxide source can result in lower processing temperature (≤1200 °C) and shorter holding time (≤3 h). Single-phase WC powders...
全文获取路径: Elsevier  (合作)
影响因子:1.789 (2012)

  • tungsten 
  • carbonization 碳化酌
  • morphology 形态学
  • carbide 碳化钙
  • structure 构造
  • oxide 氧化物
  • source 
  • direct 直接的
  • phase 相位
  • evolution 进化