Crucible for master alloying
US8323559B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Nov 5, 2010 |
| Grant date | Dec 4, 2012 |
| Priority date | — |
| Expiry date | Nov 5, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/3225
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A crucible includes a composite of least two materials. The two materials are selected from a group consisting of alumina, calcia, yttria, erbia, gadolinia, magnesia, hafnia, and zirconia in a composition that has better resistance to reaction with hafnium from a molten hafnium-containing alloy than a nominal crucible composition of 70 wt % magnesia and 30 wt % alumina.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.