Process for preparing magnetic powders containing rare earth elements
The process of the invention is characterised in that the magnetic powders are prepared by mixing solutions containing the water-soluble salts of the rare earth metals and also of iron, of nickel, of cobalt, of copper and of palladium in a concentration of from 1 . 10 M/l to 1.10 M/l with an aqueous...
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| creator | GENCEV TODOROV,OGNEMIR DIMITROVA DRAGIEVA,YOVKA KRESTEV ILIEV,ILIA TODOROV BUCKOV,DIMITER SLAVOMIROVA SLAVCEVA-STAIKOVA,MINA |
| description | The process of the invention is characterised in that the magnetic powders are prepared by mixing solutions containing the water-soluble salts of the rare earth metals and also of iron, of nickel, of cobalt, of copper and of palladium in a concentration of from 1 . 10 M/l to 1.10 M/l with an aqueous solution of the reducing agent sodium borohydride or sodium hypophosphite having a concentration of from 0.05 to 1 M/l at a temperature of from 10 DEG C to 90 DEG C and for a reaction time of from 1 to 30 minutes, using a permanent magnet field having an intensity of from 1.10 to 8.10 A/m and with subsequent washing and drying of the powder prepared. |
| format | Patent |
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| language | eng ; ger |
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| subjects | BASIC ELECTRIC ELEMENTS CASTING ELECTRICITY INDUCTANCES MAGNETS MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER PERFORMING OPERATIONS POWDER METALLURGY SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES TRANSFORMERS TRANSPORTING WORKING METALLIC POWDER |
| title | Process for preparing magnetic powders containing rare earth elements |
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