Sintered alumina article with high flexural strength and process for producing same
US4996177A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 1988 |
| Grant date | Feb 26, 1991 |
| Priority date | — |
| Expiry date | Jul 22, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24132
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A sintered alumina article having an excellent flexural strength comprises numerous sintered plate crystalline corundum particles each having cleavage surface planes and accumulated on and bonded to each other in a manner such that the cleavage surface planes of the accumulated plate crystalline particles are substantially in parallel to each other and can be produced by forming the plate crystalline corundum particles into a predetermined shape so that the plate crystalline particles are accumulated in the above-mentioned manner; and by sintering the resultant precursory article at 1500.degree. C. or more under the ambient atmospheric pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.