Crucible structure and method for forming isolating layer of crucible
US11534794B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2020 |
| Grant date | Dec 27, 2022 |
| Priority date | — |
| Expiry date | May 11, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC30B29/06
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for forming an isolating layer of a crucible includes placing a round crucible sideways with a bottom surface of an inside thereof perpendicular to a horizontal plane, and then performing a plurality of spraying processes to form the isolating layer on the bottom surface and a wall surface of the round crucible. Each spraying process includes spraying a slurry on the bottom surface; using an optical positioner to set a spraying range the same as one of a plurality of partial areas divided from the wall surface; aligning one of the plurality of partial areas with the spraying range; fixing the round crucible and spraying the slurry in the spraying range; stopping the spraying; and rotating the round crucible to move another partial area to the spraying range. Then, the steps are repeated until the spraying of all the partial areas is completed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.