Cubic boron nitride sintered material and cutting tool including same
US11752559B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 30, 2021 |
| Grant date | Sep 12, 2023 |
| Priority date | — |
| Expiry date | Jul 30, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C2026/003
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The cubic boron nitride sintered material is a cubic boron nitride sintered material comprising: cubic boron nitride particles in an amount of 70 vol % or more and less than 100 vol %, and a bonding material, wherein the bonding material includes an aluminum compound, and includes cobalt as a constituent element; the cubic boron nitride sintered material has a first region in which a space between adjacent cubic boron nitride particles is 0.1 nm or more and 10 nm or less; and when the first region is analyzed by using an energy dispersive X-ray analyzer equipped with a transmission electron microscope, the atom % of aluminum in the first region is 0.1 or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.