Yttrium oxide ceramic body
US4755492A · kind A · utility
25Cited by
10References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 6, 1986 |
| Grant date | Jul 5, 1988 |
| Priority date | — |
| Expiry date | Oct 6, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/91
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A sinterable yttrium oxide powder is produced useful for pressureless sintering a compact thereof into an optically translucent or transparent body. The yttrium oxide powder has a specified particle size range and specific surface area. It is formed by preparing yttrium oxalate hydrate powder by means of the wet chemical oxalate method, comminuting the yttrium oxalate hydrate powder to a required degree and calcining the yttrium oxalate hydrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.