METHOD FOR PRODUCING FERRITE-COATED METAL MAGNETIC PARTICULATE

• Main Authors: WAKE HIDETARO, KOISHI YOSHITAKA
• Format: Patent
• Language: English
• Published: 13.04.2006
• Subjects: BASIC ELECTRIC ELEMENTS; CASTING; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; ELECTRICITY; INDUCTANCES; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; MAGNETS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSFORMERS; TRANSPORTING; WORKING METALLIC POWDER

PROBLEM TO BE SOLVED: To provide a production method for mass-producing ferrite-coated metal magnetic particulates without complicating the steps. SOLUTION: A polymer having a carboxyl group is made to coexist in a ferrite plating reaction system in a ferrite plating reaction by a cold stirring process, thus the production of free ferrite particulates is suppressed, and consequently the method for producing the ferrite-coated metal magnetic particulates can employ a separation step by filtering or the like, a cleaning step by stirring and a drying step by vacuum drying or the like. COPYRIGHT: (C)2006,JPO&NCIPI