Method of casting silicon into thin sheets
Abstract
Silicon (Si) is cast into thin shapes within a flat-bottomed graphite crucible by providing a melt of molten Si along with a relatively small amount of a molten salt, preferably NaF. The Si in the resulting melt forms a spherical pool which sinks into and is wetted by the molten salt. Under these conditions the Si will not react with any graphite to form SiC. The melt in the crucible is pressed to the desired thinness with a graphite tool at which point the tool is held until the mass in the crucible has been cooled to temperatures below the Si melting point, at which point the Si shape can be removed.
- Inventors:
-
- San Jose, CA
- Los Altos, CA
- Tucson, AZ
- Issue Date:
- OSTI Identifier:
- 864371
- Patent Number(s):
- 4356141
- Application Number:
- 06/240,918
- Assignee:
- SRI International (Menlo Park, CA)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS
C - CHEMISTRY C30 - CRYSTAL GROWTH C30B - SINGLE-CRYSTAL-GROWTH
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- method; casting; silicon; sheets; cast; shapes; flat-bottomed; graphite; crucible; providing; melt; molten; relatively; amount; salt; preferably; naf; resulting; forms; spherical; pool; sinks; wetted; conditions; react; form; sic; pressed; desired; thinness; tool; held; mass; cooled; temperatures; below; melting; shape; removed; temperatures below; molten salt; casting silicon; /264/136/
Citation Formats
Sanjurjo, Angel, Rowcliffe, David J, and Bartlett, Robert W. Method of casting silicon into thin sheets. United States: N. p., 1982.
Web.
Sanjurjo, Angel, Rowcliffe, David J, & Bartlett, Robert W. Method of casting silicon into thin sheets. United States.
Sanjurjo, Angel, Rowcliffe, David J, and Bartlett, Robert W. Tue .
"Method of casting silicon into thin sheets". United States. https://www.osti.gov/servlets/purl/864371.
@article{osti_864371,
title = {Method of casting silicon into thin sheets},
author = {Sanjurjo, Angel and Rowcliffe, David J and Bartlett, Robert W},
abstractNote = {Silicon (Si) is cast into thin shapes within a flat-bottomed graphite crucible by providing a melt of molten Si along with a relatively small amount of a molten salt, preferably NaF. The Si in the resulting melt forms a spherical pool which sinks into and is wetted by the molten salt. Under these conditions the Si will not react with any graphite to form SiC. The melt in the crucible is pressed to the desired thinness with a graphite tool at which point the tool is held until the mass in the crucible has been cooled to temperatures below the Si melting point, at which point the Si shape can be removed.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Oct 26 00:00:00 EDT 1982},
month = {Tue Oct 26 00:00:00 EDT 1982}
}
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