Carbide coated composite modified silicon aluminum oxynitride cutting tools
US4426209A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 1982 |
| Grant date | Jan 17, 1984 |
| Priority date | — |
| Expiry date | May 20, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2993
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Coated abrasion resistant composite ceramic cutting tools comprise a composite substrate body consisting essentially of a particulate material selected from the group consisting of the refractory metal carbides, nitrides, carbonitrides and combinations thereof uniformly distributed in a matrix, coated with at least one adherent coating layer comprising a refractory metal carbide. The particulate material is of an average particle size ranging between about 0.5 microns to about 20 microns and comprises from about 5 to about 60 volume percent of the composite cutting tool. The matrix consists essentially of a modified silicon aluminum oxynitride having about 2 to about 25 volume percent of a modifier selected from the oxides of silicon, yttrium, magnesium, hafnium, zirconium, beryllium, the lanthanides and combinations thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.