Method of producing cubic boron nitride coated material
US4762729A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1987 |
| Grant date | Aug 9, 1988 |
| Priority date | — |
| Expiry date | Nov 30, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C28/04
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
There are disclosed a cubic boron nitride coated material including a substrate and an outer layer composed principally of cubic boron nitride and formed on a surface of the substrate, comprising an intermediate layer fored of at least one intermediate layer and interposed between the substrate and outer layer, the intermediate between the substrate and outer layer, the intermediate layer or the outermost one of intermediate layers being formed of a layer of at least one nitrogen-containing compound selected from the nitrides and nitroxides of Al, Ga, In and Tl and mutual solid solutions thereof, and a producing method of the same which comprises: providing, on the surface of the substrate, an intermediate layer formed of at least one intermediate layer, the intermediate layer or the outermost one of intermediate layers being formed of a layer 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 causing the outer 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.