Unidirectional solidification process and apparatus and single-crystal seed therefor
US9144842B2 · kind B2 · utility
8Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2013 |
| Grant date | Sep 29, 2015 |
| Priority date | — |
| Expiry date | Mar 26, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC30B29/52
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A single-crystal seed, apparatus and process for producing a casting having a single-crystal (SX) microstructure. The seed has a geometry that includes a vertex capable of destabilizing an oxide film that forms at the interface between the seed and a molten metal during the casting process, and thereby promotes a continuous single-crystal grain growth and reduces grain misorientation defects that can initiate from the seed/metal interface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.