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Abstract

<jats:p>B4C–TiB2 ceramic materials were prepared by spark plasma sintering of powder mixtures B4C+TiB2 (12 wt.%) in an argon atmosphere at 1900°C and a uniaxial pressure of 70 MPa. X-ray powder diffraction was used for the phase analysis and to refine the crystal structures of the individual phases. The influence of homogenization of the initial powders (using ball milling) on the mechanical properties of the ceramics was studied. Vickers hardness values of 38.8 GPa (without ball milling) and 41.1 GPa (ball-milled starting powders) for B4C–TiB2 composites were reached and the relative density of the samples exceeded 99 %.</jats:p>

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Keywords

b4ctib2 powder powders ball milling

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