Mechanical properties of superhard boron subnitride B13N2

摘要

Microstructure and mechanical properties of bulk polycristalline rhombohedralboron subnitride B13N2 synthesized by crystallization from the B-BN melt at 7GPa have been systematically studied by micro- and nanoindentation, atomicforce microscopy and scanning electron microscopy. The obtained data onhardness, elastic properties and fracture toughness clearly indicate that B13N2belongs to a family of superhard phases and can be considered as a promisingsuperabrasive or binder for cubic boron nitride.