Method of making composite material crucible for use in a device for making single crystals
US5132145A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 2, 1990 |
| Grant date | Jul 21, 1992 |
| Priority date | — |
| Expiry date | Feb 2, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/30
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A composite material crucible for a device for making single crystals having a single layer integrally-formed cylindrical wall made of composite materials in order to simultaneously provide mechanical strength and matching of its thermal conductivity to the thermal conductivity of a molten sample. The wall has an inner lining intimately and integrally bonded thereto for providing the functions of sealing and physical and chemical compatibility with the sample, without contamination thereof. A method for manufacturing the cylindrical crucible comprising selecting a composite material wall composition including fibers made of carbon or silicon carbide, and a matrix made of carbon or silicon carbide, making from the composite material a single layer integrally-formed cylindrical wall, and depositing on the cylindrical wall an optimized material to form an inner coating which is intimately and integrally bonded to the cylindrical wall.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.