Abstract

The paper deals with the features of the plasma-chemical process for obtaining tungsten carbide using an alternating current plasma torch. The synthesis was carried out in hydrogen and methane plasma. The process of obtaining tungsten carbide is as follows: WO₃ tungsten oxide powder is exposed to H₂ and CH₄ plasma flow with a maximum temperature of up to 10 000 K. The gas mixture flow rate was up to 0.02 g/s, the plasma torch power was up to 3 kW in most experiments. The obtained samples were studied by X-ray diffraction, scanning electron microscopy and elemental mapping using energy-dispersive X-ray spectroscopy. It was found that during the synthesis tungsten carbide WC was obtained, its dimensions are in the range of 5‒20 μm.

中文翻译：

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使用交流等离子炬获得超细碳化钨的可能性研究

摘要

本文讨论了使用交流等离子炬获得碳化钨的等离子化学工艺的特点。合成在氢气和甲烷等离子体中进行。获得碳化钨的过程如下：将WO ₃氧化钨粉末暴露于H ₂和CH _{4 等}离子流中，最高温度高达10 000 K。混合气体流速高达0.02 g/s，在大多数实验中，等离子炬功率高达 3 kW。通过 X 射线衍射、扫描电子显微镜和使用能量色散 X 射线光谱的元素图对获得的样品进行了研究。结果发现，在合成过程中得到的碳化钨WC，其尺寸在5-20μm范围内。