JP2582764B

JP2582764B

Ferromagnetic metal particles of substantially iron are prepared by starting from an acicular alpha -FeOOH, applying a shape-stabilizing finish to the particle surface, heating at 500 DEG -850 DEG C. and subsequently reducing with gaseous reducing agents at 200 DEG -500 DEG C. to the metal, and star...

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Bibliographische Detailangaben
Hauptverfasser: KURAUSUUDEIITAA HOPE, RAINAA FUEZAA, IEENE KOFUAKUSU, UERUNAA SHUTETSUKU, HERUMUUTO YAKUSHU
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
CASTING
CHEMISTRY
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
ELECTRICITY
INDUCTANCES
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
INORGANIC CHEMISTRY
MAGNETS
MAKING METALLIC POWDER
MANUFACTURE OF ARTICLES FROM METALLIC POWDER
METALLURGY
PERFORMING OPERATIONS
PHYSICS
POWDER METALLURGY
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
TRANSFORMERS
TRANSPORTING
WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:Ferromagnetic metal particles of substantially iron are prepared by starting from an acicular alpha -FeOOH, applying a shape-stabilizing finish to the particle surface, heating at 500 DEG -850 DEG C. and subsequently reducing with gaseous reducing agents at 200 DEG -500 DEG C. to the metal, and starting alpha -FeOOH being prepared in the presence of zinc and phosphate ions.