Compositions for cores used in investment casting
US9950358B2 · kind B2 · utility
3Cited by
24References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2015 |
| Grant date | Apr 24, 2018 |
| Priority date | — |
| Expiry date | Jul 27, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/9615
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present disclosure generally relates to a ceramic core comprising predominantly mullite, which is derived from a precursor comprising alumina particles and siloxane binders. Free silica is present in the ceramic body, but is largely unavailable for reaction with metal alloys used in investment casting. Methods of making cast metal articles are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.