Sintered Al.sub.2 O.sub.3 material, process for its production and use of the material
US6066584A · kind A · utility
58Cited by
7References
53Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1997 |
| Grant date | May 23, 2000 |
| Priority date | — |
| Expiry date | Jan 31, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2310/00203
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention relates to the field of ceramics and concerns sintered Al.s2 O.sub.3 compositions produced from corundum powder and also methods for the use of the invented compositions as medical implants or tool material. To produce such materials, an initially unsintered precursor having a relative density of .rho..gtoreq.55% is produced from .alpha.-Al.sub.2 O.sub.3 powder having defined properties using at least two different dispersing methods, this precursor is subsequently subjected to heat treatment and sintering.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.