Sintering of beta-type alumina bodies using alpha-alumina encapsulation
US4263381A · kind A · utility
8Cited by
10References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 27, 1978 |
| Grant date | Apr 21, 1981 |
| Priority date | — |
| Expiry date | Oct 27, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/113
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of sintering a shaped green, beta-type alumina body comprising: (A) inserting said body into an open chamber prepared by exposing the interior surface of a container consisting essentially of at least about 50 weight percent of alpha-alumina and a remainder of other refractory material to a sodium oxide or sodium oxide producing environment; (B) sealing the chamber; and heating the chamber with the shaped body encapsulated therein to a temperature and for a time necessary to sinter said body to the desired density. The encapsulation chamber prepared as described above is also claimed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.