JPH0470692B

PURPOSE:To obtain magnetic metallic powder having excellent oxidation stability by dispersing the magnetic metallic powder into a soln. dissolved therein with a chelating agent and depositing the chelating agent on the particle surface of the magnetic metallic powder. CONSTITUTION:The magnetic metal...

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Bibliographische Detailangaben
Hauptverfasser:	SUEYOSHI TOSHINOBU, NAONO HIROMITSU
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CASTING CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS CORRECTING FLUIDS DYES FILLING PASTES INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER INKS MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS PHYSICS POLISHES POWDER METALLURGY TRANSPORTING USE OF MATERIALS THEREFOR WOODSTAINS WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	PURPOSE:To obtain magnetic metallic powder having excellent oxidation stability by dispersing the magnetic metallic powder into a soln. dissolved therein with a chelating agent and depositing the chelating agent on the particle surface of the magnetic metallic powder. CONSTITUTION:The magnetic metallic powder (e.g.; nickel powder, cobalt powder) is dispersed into the soln. prepd. by dissolving therein with the chelating agent and the chelating agent is deposited on the particle surface of the magnetic metallic powder, by which the magnetic metallic powder having the excellent oxidation stability is obtd. The oxidation stability is additionally improved by oxidizing preliminarily the particle surface of the magnetic metallic powder. A method for exposing the magnetic metallic powder into the vapor evaporated from the chelating agent and coating the chelating agent on the particle surface of the magnetic metallic powder is also used. Acetyl acetone, diethyl tartrate, monoethanol amine, etc. are adequately used for the chelating agent.