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Hardness of New Boron-Rich Chalcogenides B12S and B12Se

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Abstract

Hardness of bulk polycrystalline boron-rich chalcogenides, rhombohedral B12S and B12Se, has been predicted using contemporary theoretical models and experimentally studied by microindentation. Both chalcogenides exhibit Vickers hardness of about 33 GPa exceeding that of boron carbide and hence belong to a family of (super)hard phases.

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REFERENCES

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ACKNOWLEDGMENTS

The author thanks Dr. V.A. Mukhanov for the fabrication of bulk samples, and Dr. V. Bushlya for sample polishing and SEM study.

Funding

This work was financially supported by the European Union’s Horizon 2020 Research and Innovation Programme under the Flintstone2020 project (grant agreement no. 689279).

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Authors and Affiliations

  1. LSPM–CNRS, Université Sorbonne Paris Nord, 93430, Villetaneuse, France

    V. L. Solozhenko

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  1. V. L. Solozhenko
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Correspondence to V. L. Solozhenko.

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Solozhenko, V.L. Hardness of New Boron-Rich Chalcogenides B12S and B12Se. J. Superhard Mater. 43, 375–377 (2021). https://doi.org/10.3103/S1063457621050075

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  • DOI: https://doi.org/10.3103/S1063457621050075

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