SPHEROIDIZING OF SILICON METAL POWDER

SPHEROIDIZING OF SILICON METAL POWDER

PROBLEM TO BE SOLVED: To provide a method of spheroidizing silicon metal particles in a high throughput. SOLUTION: The spheroidizing method for silicon powder comprises a stage (a) wherein silicon metal particles having an irregular morphology are entrained into a gas flow; a stage (b) wherein the e...

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Hauptverfasser: KOPATZ NELSON E, BRAYMILLER SCOTT A, HOUCK DAVID L, SINGH RAJ P, PIERCE MICHAEL R
Format: Patent
Sprache:eng
Schlagworte:
AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE
APPARATUS THEREFOR
CHEMISTRY
COMPOUNDS THEREOF
CRYSTAL GROWTH
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE
REFINING BY ZONE-MELTING OF MATERIAL
SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE
SINGLE-CRYSTAL-GROWTH
UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL
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creator KOPATZ NELSON E
BRAYMILLER SCOTT A
HOUCK DAVID L
SINGH RAJ P
PIERCE MICHAEL R
description PROBLEM TO BE SOLVED: To provide a method of spheroidizing silicon metal particles in a high throughput. SOLUTION: The spheroidizing method for silicon powder comprises a stage (a) wherein silicon metal particles having an irregular morphology are entrained into a gas flow; a stage (b) wherein the entrained particles are poured into a plasma reactor housing a reducing atmosphere; a stage (c) wherein at least 50 wt.% of the silicon metal particles are melted to form molten droplets; and a stage (d) wherein the droplets are solidified to form the substantially spherical silicon metal particles. COPYRIGHT: (C)2004,JPO
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SOLUTION: The spheroidizing method for silicon powder comprises a stage (a) wherein silicon metal particles having an irregular morphology are entrained into a gas flow; a stage (b) wherein the entrained particles are poured into a plasma reactor housing a reducing atmosphere; a stage (c) wherein at least 50 wt.% of the silicon metal particles are melted to form molten droplets; and a stage (d) wherein the droplets are solidified to form the substantially spherical silicon metal particles. 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subjects AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE
APPARATUS THEREFOR
CHEMISTRY
COMPOUNDS THEREOF
CRYSTAL GROWTH
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE
REFINING BY ZONE-MELTING OF MATERIAL
SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE
SINGLE-CRYSTAL-GROWTH
UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL
title SPHEROIDIZING OF SILICON METAL POWDER
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