IRON OXIDE COMPOSITE PARTICLE AND MANUFACTURING METHOD THEREFOR

IRON OXIDE COMPOSITE PARTICLE AND MANUFACTURING METHOD THEREFOR

PROBLEM TO BE SOLVED: To provide a material mainly composed of a magnetite and improved in heat resistance, water resistance, heat conductivity characteristic and electromagnetic wave absorption characteristic than the current magnetite manufactured by a wet method or a dry method. SOLUTION: This ir...

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Bibliographische Detailangaben
1. Verfasser: TAKESHIMA EIKI
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
CHEMISTRY
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
ELECTRICITY
INDUCTANCES
INORGANIC CHEMISTRY
MAGNETS
METALLURGY
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
TRANSFORMERS
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a material mainly composed of a magnetite and improved in heat resistance, water resistance, heat conductivity characteristic and electromagnetic wave absorption characteristic than the current magnetite manufactured by a wet method or a dry method. SOLUTION: This iron oxide composite particle is a three-component one comprising not less than 45 mass% magnetite (Fe3O4), and the balance a wustite (FeO) and a metal iron (αFe). This particle can be manufactured by a method in which a hematite (Fe2O3) having an average particle diameter of 0.1-5.0 μm is reduced at a temperature of 500-700°C while keeping a fluidized condition and then rapidly cooled. COPYRIGHT: (C)2006,JPO&NCIPI