Process for making a ceramic article having a dense integral outer barrier layer and a high degree of porosity and crushability characteristics
US4187266A · kind A · utility
13Cited by
6References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 6, 1977 |
| Grant date | Feb 5, 1980 |
| Priority date | — |
| Expiry date | Oct 6, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22C1/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for simultaneously forming an integral barrier layer on selected external surfaces of a fired alumina-based compound ceramic article and for increasing the porosity and crushability characteristics thereof embodies the sintering of a ceramic compact comprising a reactant fugitive filler material and the alumina-based compound ceramic material in a controlled atmosphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.