MAGNETIC GRAIN AND METHOD FOR PRODUCING THE SAME

PROBLEM TO BE SOLVED: To provide magnetic grains having magnetocaloric effect practical in the vicinity of room temperature, and also having excellent corrosion resistance, and to provide a method for producing the same. SOLUTION: The magnetic grains are obtained by providing the surface of each all...

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Bibliographische Detailangaben
1. Verfasser:	TANIGAWA SHIGEO
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS 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 FERROUS OR NON-FERROUS ALLOYS 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 TREATMENT OF ALLOYS OR NON-FERROUS METALS WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide magnetic grains having magnetocaloric effect practical in the vicinity of room temperature, and also having excellent corrosion resistance, and to provide a method for producing the same. SOLUTION: The magnetic grains are obtained by providing the surface of each alloy grain having a composition expressed by (La-Y)AMBSiCHDTbal(wherein, M is one or more kinds of elements selected from Ti, Zr and Hf; T includes Fe as an essential element, and, if required, also includes one or more kinds of elements selected from Co, Ni and Cr, and, 6.0≤A≤7.5 atomic%, 0≤B≤5.0 atomic%, 8.0≤C≤14.0 atomic% and 0≤D≤15.0 atomic% are satisfied) with a chemical conversion film with phosphoric acid. COPYRIGHT: (C)2006,JPO&NCIPI