Modified sol-gel alumina
US5527369A · kind A · utility
108Cited by
9References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 17, 1994 |
| Grant date | Jun 18, 1996 |
| Priority date | — |
| Expiry date | Nov 17, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K3/1418
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Alpha alumina abrasive grits with grain boundaries modified with at least one of yttria and a rare earth metal oxide, and one or more oxides selected from the oxides of magnesium and/or transition elements, perform at enhanced levels if at least the yttria and/or rare earth metal oxide modifiers are present within the body of the grit in concentrations at least as high as their concentrations at the surface of the grit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.