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...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
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
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	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