The goal of this paper is to simplify and reduce the cost of manufacturing tungsten carbide. The work presents the results of experimental studies that prove the possibility of synthesizing fine and ultrafine crystalline phases of tungsten carbide in the DC arc discharge plasma ignited in open air by a developed vacuumless technique. The synthesis is implemented in the process of arc discharge burning between the graphite rod (anode) placed inside the cavity of the graphite cathode in the presence of graphite and tungsten powders used as initial precursors. The cathode cavity (reaction zone) is shielded from oxygen by a stream of carbon monoxide and carbon dioxide gases, which are generated during the arc discharge burning in an open air. After studying the influence of main process parameters (parameters of the discharge circuit and graphite electrode's dimensions) and optimizing the system, the authors obtained tungsten carbide phases without impurities of oxide phases. This allows simplifying significantly the technology of tungsten carbides synthesis by excluding the stage of vacuum creation.

本文的目的是简化并降低制造碳化钨的成本。这项工作提出了实验研究的结果，证明了通过开发的无真空技术在露天点燃的直流电弧放电等离子体中合成碳化钨的细晶相和超细晶相的可能性。在存在用作初始前体的石墨和钨粉的情况下，在放置在石墨阴极腔体内的石墨棒（阳极）之间的电弧放电燃烧过程中实施合成。阴极腔（反应区）通过一氧化碳和二氧化碳气体流与氧气隔离，这是在电弧放电期间在露天燃烧产生的。在研究了主要工艺参数（放电电路的参数和石墨电极的尺寸）的影响并优化了系统后，作者获得了不含氧化物相杂质的碳化钨相。通过排除真空产生阶段，这可以大大简化碳化钨的合成技术。