Enhanced B4C-based materials with TiB2 additive  prepared by spark plasma sintering

Editorial Board PCSS Journal; Andriana Ivanushko; Hakan Ünsal; Volodymyr Babizhetskyy; Oksana Zaremba; Anatoliy Zelinskiy; Khrystyna Miliyanchuk; Peter Tatarko; Roman Gladyshevkii

doi:10.15330/pcss.27.2.272-278

Authors

Andriana Ivanushko Ivan Franko National University of Lviv, Lviv, Ukraine
Hakan Ünsal Institute of Inorganic Chemistry, Slovak Academy of Sciences, Bratislava, Slovak Republic
Volodymyr Babizhetskyy Ivan Franko National University of Lviv, Lviv, Ukraine
Oksana Zaremba Ivan Franko National University of Lviv, Lviv, Ukraine
Anatoliy Zelinskiy Ivan Franko National University of Lviv, Lviv, Ukraine
Khrystyna Miliyanchuk Ivan Franko National University of Lviv, Lviv, Ukraine
Peter Tatarko Institute of Inorganic Chemistry, Slovak Academy of Sciences, Bratislava, Slovak Republic
Roman Gladyshevkii Ivan Franko National University of Lviv, Lviv, Ukraine

DOI:

https://doi.org/10.15330/pcss.27.2.272-278

Keywords:

Boron carbide, Spark plasma sintering, X-ray powder diffraction, Hardness

Abstract

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 %.

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