Ultrafine cobalt metal powder, process for the production thereof and use of the cobalt metal powder and of cobalt carbonate

Ultra-fine Co metal powder is composed of spherical or rice grain shaped crystallites. > 90% of the crystallites have a diameter from 0.5 to 2 mu m and the Na and C contents < 100 ppm and < 500 ppm respectively. Also claimed is a method for producing such Co powder by reacting a soluble Co...

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Bibliographic Details
Main Authors KNUT EIKEMEYER, BERND MENDE, MATTHIAS HOHNE
Format Patent
LanguageEnglish
Published 06.01.2000
Edition7
Subjects
BASIC ELECTRIC ELEMENTS
CASTING
CHEMISTRY
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
ELECTRICITY
FERROUS OR NON-FERROUS ALLOYS
INORGANIC CHEMISTRY
MAKING METALLIC POWDER
MANUFACTURE OF ARTICLES FROM METALLIC POWDER
METALLURGY
PERFORMING OPERATIONS
POWDER METALLURGY
PRETREATMENT OF RAW MATERIALS
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
PRODUCTION AND REFINING OF METALS
TRANSPORTING
TREATMENT OF ALLOYS OR NON-FERROUS METALS
WORKING METALLIC POWDER
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Summary:Ultra-fine Co metal powder is composed of spherical or rice grain shaped crystallites. > 90% of the crystallites have a diameter from 0.5 to 2 mu m and the Na and C contents < 100 ppm and < 500 ppm respectively. Also claimed is a method for producing such Co powder by reacting a soluble Co salt with a solution or suspension of an alkali or alkaline earth metal or cobalt or ammonium carbonate and or hydrogen carbonate at pH 5.5 to 6.8, separating and washing the precipitated product with H2O, drying it and reducing the CoCO3 obtained to Co metal.
Bibliography:Application Number: AU19960070295