Alumina coated cemented carbide body
US5635247A · kind A · utility
43Cited by
6References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 17, 1995 |
| Grant date | Jun 3, 1997 |
| Priority date | — |
| Expiry date | Feb 17, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C30/005
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An improved multilayer alumina coated cemented carbide insert is made by depositing on the substrate a .kappa.-alumina layer, wet blasting the surface of that insert and then heat-treating the resulting insert at 900.degree. C.-1100.degree. C. for 0.3-10 hours to convert the .kappa.-alumina to .alpha.-alumina. One or more further alumina layers can then be applied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.