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US 12,312,277 B2Granted
Polycrystalline cubic boron nitride material
AssigneesElement Six (UK) Limited, Seco Tools AB
InventorsRebecka Lindvall, Antionette Can, Rachid M'Saoubi, Filip Ernst Lenrick, Volodymyr Bushlya, Jan-Eric Staahl
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Abstract
This disclosure relates to a high cBN content polycrystalline cubic boron nitride, PCBN, material. The binder matrix material comprises 19 to 50 wt. % chromium, or a compound thereof.
Claims18
A polycrystalline cubic boron nitride, PCBN, material comprising:
- between 70 and 95 vol. % cubic boron nitride, cBN, particles;
- a binder matrix material in which the cBN particles are dispersed, the content of the binder matrix material being between 5 vol. % and 30 vol. % of the PCBN material;
- the binder matrix material comprising a ceramic constituent and at least 50 vol. % of a metal constituent,
- the ceramic constituent comprising titanium diboride (TiB2),
- the metal constituent comprising chromium (Cr), or a compound thereof, in an amount of 19 to 50 wt. % of the binder matrix material,
- wherein the metal constituent further comprises vanadium (V) present in an amount of 15 to 50 wt. % of the binder matrix material.
3 more elements
Dependencies are inferred from the claim text.