The present work is devoted to the study of the production of ultrafine-grained (UFG) spherical microparticles by electro discharge erosion (EDE) of the WC-15Co cemented carbide in glycerol, distilled water, and their solutions. Energy costs, productivity, particle size distribution, and morphological and chemical compositions of the obtained powders were studied. It was found that energy cost is reduced by 2.2 times when glycerol was used instead of water. The use of water reduces carbon content from 5.2% to 1.4%. The use of glycerol and its aqueous solutions reduces carbon loss and increases its content in the obtained powders from 3.2% to 6.1%. During SE, cobalt, carbon, and tungsten evaporate from spherical particles and crystallize in the form of ultrafine particles, which subsequently remain in suspension after sedimentation of spherical particles. Mass fractions of sedimented spherical particle fractions ranged from 75% to 82%. Cobalt and carbon content in the spherical p...

中文翻译：

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WC-15Co合金在甘油中的放电腐蚀制备超细球形β-WC-W 2 C-Co微粒及其溶液。

本工作致力于研究通过在甘油，蒸馏水及其溶液中对WC-15Co硬质合金进行电蚀（EDE）来生产超细颗粒（UFG）球形微粒。研究了获得的粉末的能量成本，生产率，粒度分布以及形态和化学组成。发现使用甘油代替水可以使能源成本降低2.2倍。使用水可使碳含量从5.2％降至1.4％。甘油及其水溶液的使用减少了碳损失，并将其在所得粉末中的含量从3.2％增加至6.1％。SE期间，钴，碳和钨从球形颗粒中蒸发，并以超细颗粒形式结晶，其随后在球形颗粒沉淀后保留在悬浮液中。沉积的球形颗粒的质量分数范围为75％至82％。球形颗粒中的钴和碳含量