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US 12,583,797 B2Granted
Sintered polycrystalline cubic boron nitride material
AssigneeElement Six (UK) Limited
InventorsAntionette Can, Xiaoxue Zhang, Volodymyr Bushlya, Denis Stratiichuk, Kateryna Slipchenko, Alexander Osipov, Igor Petrusha, Vladimir Turkevich
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Abstract
This disclosure relates to polycrystalline cubic boron nitride material with cBN particles in a metal matrix comprising zirconium nitride and/or vanadium nitride precipitates or grains.
Claims16
A polycrystalline cubic boron nitride, PCBN, material comprising consisting essentially of:
- between 30 and 90 vol. % cubic boron nitride, cBN, particles;
- a matrix material in which the cBN particles are dispersed, the content of the matrix material being between 10 vol. % and 70 vol. % of the PCBN material;
- the matrix material consisting essentially of a titanium compound, an aluminium compound, and
- precipitates and/or grains containing vanadium
- said precipitates and/or grains having a shape that is any of substantially spherical, platelet-like or needle-like;
- said precipitates and/or grains having a mean largest linear dimension of no more than 1 μm.
3 more elements
Dependencies are inferred from the claim text.