Glass-ceramic compositions of high refractoriness
US4415672A · kind A · utility
7Cited by
17References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 20, 1982 |
| Grant date | Nov 15, 1983 |
| Priority date | — |
| Expiry date | May 20, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C2214/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The instant invention is directed to the preparation of glass-ceramic bodies exhibiting high strengths and use temperatures up to 1200.degree. C. The bodies consist essentially, expressed in terms of weight percent on the oxide basis, of ______________________________________ Li.sub.2 O 1.5-5 Al.sub.2 O.sub.3 15-25 SiO.sub.2 60-75 ZrO.sub.2 1-5 Nb.sub.2 O.sub.5 0-10 Ta.sub.2 O.sub.5 0-10 Nb.sub.2 O.sub.5 + Ta.sub.2 O.sub.5 1-10 MgO 0-10 ______________________________________ where excellent resistance to oxidation up to temperatures of 1200.degree. C. is desired, 0.5-3% As.sub.2 O.sub.3 will be included in the composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.