Functionally graded coatings for abrasive particles and use thereof in vitreous matrix composites
US6475254B1 · kind B1 · utility
41Cited by
6References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2001 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | Nov 16, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K3/1436
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Coated abrasive particle for use in vitreous bond matrices, which particle is coated with between 1 and about 50 coating layers. Each coating layer ranges in thickness from between about 0.1 and 50 microns. Each layer has the composition, MCXNYBZOW, where, M represents one or more of Ti, Si, V, Cr, Zr, Nb, Mo, Hf, Ta, W, Re or a rare earth metal, and w, x, y, and z, each range from between 0 and 3. The outermost coating layer has a concentration of oxygen that is higher by a factor of at least about 2 than the layer in direct contact with the abrasive particle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.