Sintered alumina-based and zirconia-based product
US-2018230058-A1 · Aug 16, 2018 · US
Sintered polycrystalline cubic boron nitride material
US12583797B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12583797-B2 |
| Application number | US-202017642304-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 10, 2020 |
| Priority date | Sep 13, 2019 |
| Publication date | Mar 24, 2026 |
| Grant date | Mar 24, 2026 |
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Abstract
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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.
First claim
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The invention claimed is: 1 . 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. 2 . The PCBN material as claimed in claim 1 , wherein the precipitates and/or grains comprise at least one of a nitride, a carbide, a carbonitride and/or a diboride. 3 . The PCBN material as claimed in claim 1 , wherein grains, and/or the vanadium-containing precipitates and/or grains comprise 10 vol. % -25 vol. % of the PCBN material. 4 . The PCBN material as claimed in claim 1 , wherein the vanadium-containing precipitates and/or grains comprise 10 vol. % of the PCBN material. 5 . The PCBN material as claimed in claim 1 , wherein the vanadium-containing precipitates and/or grains have a mean largest linear dimension of no more than 0.50 μm. 6 . The PCBN material as claimed in claim 1 , wherein the vanadium-containing precipitates and/or grains have a mean largest linear dimension of no more than 0.20 μm. 7 . The PCBN material as claimed in claim 1 , wherein the matrix material comprises any of titanium carbonitride, titanium carbide, titanium nitride, titanium diboride, aluminium nitride and aluminium oxide. 8 . The PCBN material as claimed in claim 7 , comprising 10 vol. %-25 vol. % titanium carbide, TiC or titanium nitride, TiN. 9 . The PCBN material as claimed in claim 1 , further comprising 5 vol. % aluminium, Al, or a compound thereof. 10 . The PCBN material as claimed in claim 1 , comprising 60 vol. % cubic boron nitride, cBN. 11 . The PCBN material as claimed in claim 1 , wherein the cBN particles have an average size of between 0.5 μm and 15 82 m. 12 . The PCBN material as claimed in claim 1 , wherein the PCBN material has a Vickers microhardness of between 26 GPa and 34 GPa. 13 . A tool comprising the PCBN material as claimed in claim 1 . 14 . The tool as claimed in claim 13 , which is a tool for cutting, turning, milling, grinding, drilling, or other abrasive applications. 15 . The PCBN material as claimed in claim 1 , wherein the vanadium-containing precipitates and/or grains comprise 17.5 vol. % of the PCBN material. 16 . The PCBN material as claimed in claim 1 , wherein the vanadium-containing precipitates and/or grains comprise 25 vol. % of the PCBN material.
Assignees
Inventors
Classifications
Grain sizes and shapes, product microstructures, e.g. acicular grains, equiaxed grains, platelet-structures · CPC title
Refractory metal nitrides, e.g. vanadium nitride, tungsten nitride · CPC title
Aluminium nitrides · CPC title
Boron nitrides · CPC title
Carbonitrides, e.g. titanium carbonitride, zirconium carbonitride · CPC title
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- What does patent US12583797B2 cover?
- 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.
- Who is the assignee on this patent?
- Element Six Uk Ltd
- What technology area does this patent fall under?
- Primary CPC classification C04B35/5831. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 24 2026 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).