Cubic boron nitride sintered material
US11795113B2 · kind B2 · utility
0Cited by
3References
16Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Sep 19, 2022 |
| Grant date | Oct 24, 2023 |
| Priority date | — |
| Expiry date | Sep 19, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C2026/006
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A cubic boron nitride sintered material includes: more than or equal to 80 volume % and less than or equal to 96 volume % of cubic boron nitride grains; and a binder, wherein the binder includes tungsten carbide, cobalt, and an aluminum compound, and Ha/Hb≥0.40 is satisfied, where Hb represents a hardness of the cubic boron nitride sintered material and Ha represents a hardness of the cubic boron nitride sintered material after performing acid treatment onto the cubic boron nitride sintered material to substantially remove the binder in the cubic boron nitride sintered material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.