A high-density ceramic material (97% of theoretical density) was obtained by hot pressing of ball-milled powders W2B5, ZrB2, SiC and B4C with holding for 15 minutes at a temperature of 1850°C and a pressure of 30 MPa in an argon atmosphere. The structure and composition of the material were investigated by x-ray diffraction, scanning electron microscopy, and energy-dispersive x-ray spectroscopy. Vickers hardness (19.3 GPa), crack resistance coefficient (5,7 MPa∙m1/2) and bending strength (695 MPa) were determined.
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This work was financed by the Russian Science Foundation grant No. 19-73-10180.
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Translated from Novye Ogneupory, No. 4, pp. 27 – 33, April, 2021.
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Nesmelov, D.D., Ordan’yan, S.S. & Udalov, Y.P. Structure and Mechanical Properties of Hot-Pressed Composite Ceramics W2B5–ZrB2–SiC–B4C. Refract Ind Ceram 62, 202–207 (2021). https://doi.org/10.1007/s11148-021-00583-8
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DOI: https://doi.org/10.1007/s11148-021-00583-8