• 专利标题:   Preparing superfine tungsten carbide powder by one-step carbonization of tungsten oxide to micro-electronics, mechanical processing, mineral development, national defense industry, involves subjecting raw material for carburization reaction.
  • 专利号:   CN113816380-A, CN113816380-B, WO2023065457-A1
  • 发明人:   ZHANG X, HU X, WU Y, WANG M, CHEN H, WEN X, CHEN D, XU J, GUO J
  • 专利权人:   GANZHOU NONFERROUS METALLURGY INST, GANZHOU NONFERROUS METALLURGY INST
  • 国际专利分类:   B82Y040/00, C01B032/949, C01G041/00, C22C029/08
  • 专利详细信息:   CN113816380-A 21 Dec 2021 C01B-032/949 202234 Chinese
  • 申请详细信息:   CN113816380-A CN11214134 19 Oct 2021
  • 优先权号:   CN11214134

▎ 摘  要

NOVELTY - Preparing superfine tungsten carbide powder by one-step carbonization of tungsten oxide involves subjecting solid raw material for carburization reaction in the atmosphere of carbon monoxide to obtain superfine tungsten carbide powder, where the solid raw material comprises raw material mixture of tungsten oxide and solid carbon source, the solid carbon source comprises carbon black and/or graphene. USE - Method for preparing superfine tungsten carbide powder by one-step carbonization of tungsten oxide used to micro-electronics, mechanical processing, mineral development, aerospace and national defense industry. ADVANTAGE - The method has short process flow, and the obtained superfine tungsten carbide powder crystal grain size is less than or equal to 400 nm. The gas carbon source (carbon monoxide) is easy to control and transfer ability is strong, which not only can make up the defect of insufficient migration ability of solid carbon (carbon black and/or graphene), it also can inhibit the reaction of carbon dioxide and C and WC generated in the carburization reaction process, further carbonizing W, W2C, and WOx, can accurately control the content of carbon in the TCR through one-step carburizing reaction, so as to realize stable control of carbon content in TCR.