UNIFORM-FLUIDIZATION NITRIDING METHOD

PURPOSE:To provide a rare-earth element-iron nitride excellent in magnetic characteristic by uniformizing the distribution of nitrogen content. CONSTITUTION:The powder of a compd. shown by Rx-(Fey-M 100-y)100-x is fluidized and uniformly nitrided by a gas at 0.5-50cm/sec linear velocity. In the form...

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Bibliographische Detailangaben
Hauptverfasser:	KATSUMATA TSUTOMU, MITSUI RYOICHI
Format:	Patent
Sprache:	eng
Schlagworte:	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
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Beschreibung
Zusammenfassung:	PURPOSE:To provide a rare-earth element-iron nitride excellent in magnetic characteristic by uniformizing the distribution of nitrogen content. CONSTITUTION:The powder of a compd. shown by Rx-(Fey-M 100-y)100-x is fluidized and uniformly nitrided by a gas at 0.5-50cm/sec linear velocity. In the formula, R is >=1 kind selected from rare-earth elements (La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu) and Y, M is >=1 kind selected from B, Ti, Mo, Cr and Co, 5 atom%