Abstract. The paper presents fabrication of WC-Ni-Fe hard metal alloy with the density up to 99.9% from theoretical, hardness ~1303 HV, fracture toughness ~12.4 MPa m0.5, compressive strength ~1365 MPa and without open porosity. High quality of the materials is provided by the original synthesis route based on powder preparation and sintering. WC powder (particle size 0.1-14 µm) was obtained via mechanochemical synthesis using available precursors and polymethyl methacrylate to enhance the grinding. Rapid SPS consolidation was performed at 1200 °C and below achieving high density with the holding time being less than 18 min. Increased amount of NiFe (8 wt.% of each component) was used to enhance SPS heating due to deep wetting of the particles and, therefore, improved conductivity of the whole system. Earlier unknown data on densification dynamics and phase composition are presented for WC-8Ni-8Fe alloy under SPS sintering in the temperature range 1100-1200 °C. The results are proved by the means of XRD, SEM and EDX.

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