Cubic boron nitride coated material and producing method of the same
US4731303A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 1986 |
| Grant date | Mar 15, 1988 |
| Priority date | — |
| Expiry date | Jul 16, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C28/04
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A cubic boron nitride coated material comprises a substrate, an outer layer consisting essentially of cubic boron nitride and formed on a surface of the substrate, and at least one intermediate layer interposed between the substrate and outer layer, the intermediate layer comprising at least one nitrogen-containing compound selected from the nitrides and nitroxides of Al, Ga, In and Tl and mutual solid solutions thereof. Such a coated material can be produced by a method that comprises: PA0 providing, on the surface of a substrate, at least one intermediate layer comprised of at least one nitrogen-containing compound selected from the group consisting of nitrides and nitroxides of Al, Ga, In and Tl and mutual solid solutions thereof; and PA0 causing the outer cubic boron nitride layer to undergo oriented growth on a face of the layer of the at least one nitrogen-containing compound, the face being densely packed with nitrogen atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.