Process for depositing a composite ceramic coating on a cemented carbide substrate
US4745010A · kind A · utility
38Cited by
28References
22Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 20, 1987 |
| Grant date | May 17, 1988 |
| Priority date | — |
| Expiry date | Jan 20, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C16/403
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A process for producing a wear resistant article, such as a cutting tool. Gaseous halides of two or more of aluminum, zirconium, and yttrium with other reactants are passed over a cemented carbide substrate at 900.degree.-1250.degree. C. and 1 torr to about ambient pressure to form a composite ceramic coating on the substrate. The coating is a continuous first-phase metal oxide matrix having particles of at least one different metal oxide dispersed therein. In a preferred process, one or more of the metal halides is pulsed into the gaseous mixture containing a different metal halide to control the deposition of the particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.