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Influence of Liquid Composition and Discharge Energy on Process Productivity, Composition and Properties of Particles Produced by Electric Discharge Erosion of WC–5TiC–10Co Alloy

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Abstract

Increasing the hardness and wear resistance of powder alloys and coatings through the use of ultrafine-grained powders and metastable phases is a promising way in powder metallurgy. This paper presents results of the studies of the process of obtaining ultrafine powders by the electrical discharge erosion of the cemented carbide waste WC–5TiC–10Co on a special installation. An empirical model that describes the dependence of the productivity of the process on the discharge energy and properties of a liquid is provided. The dependence of the chemical and phase compositions of the obtained powders on the compositions of the used liquids and the specific energy consumption was investigated. The effect of the discharge energy on the morphological composition and the average particle diameter was examined. It was revealed that the formation of a metastable solid solution (W,Ti)C and a decrease in the concentration of cobalt induce an increase in the hardness of the resulting spherical particles from 1410HV0.05 to 2540HV0.05.

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Authors and Affiliations

  1. Federal Research Center, Institute of Materials Science, Far Eastern Branch of the Russian Academy of Sciences, 680042, Khabarovsk, Russia

    M. Dvornik, A. Burkov, E. Mikhailenko, N. Vlasova & S. Nikolenko

  2. Institute of Tectonics and Geophysics, Far Eastern Branch of the Russian Academy of Sciences, 680063, Khabarovsk, Russia

    N. Konovalova

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  1. M. Dvornik
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  2. A. Burkov
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  3. E. Mikhailenko
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  4. N. Vlasova
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  5. S. Nikolenko
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  6. N. Konovalova
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Contributions

All authors contributed to the study conception and design. The material preparation, data collection and analysis were performed by all authors. The first draft of the manuscript was written by Maksim Dvornik, and all authors commented on previous versions of the manuscript. All authors read and approved the final version of the manuscript.

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Correspondence to M. Dvornik.

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Dvornik, M., Burkov, A., Mikhailenko, E. et al. Influence of Liquid Composition and Discharge Energy on Process Productivity, Composition and Properties of Particles Produced by Electric Discharge Erosion of WC–5TiC–10Co Alloy. Surf. Engin. Appl.Electrochem. 59, 127–139 (2023). https://doi.org/10.3103/S1068375523020060

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