Method of manufacturing composite crucible
US9527763B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2015 |
| Grant date | Dec 27, 2016 |
| Priority date | — |
| Expiry date | Dec 27, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T117/10
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method of manufacturing a composite crucible includes: supplying mullite material powder to an upper region of a mold, and supplying second silica powder to a lower region provided below the upper region while rotating the mold; supplying third silica powder on an inner surface side of a layer made of the mullite material powder and the second silica powder; heating and fusing the mullite material powder, the second silica powder, and the third silica powder to form an opaque vitreous silica layer provided on the outer surface of the crucible, a transparent vitreous silica layer provided on an inner surface side of the crucible, and a mullite reinforcement layer provided on the outer surface side of an upper end portion of the crucible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.