Metal particulates and porous metal media

The porous metal media comprise sintered metal particulates each having a core and a surface, the particulates comprising at least about 60 wt.% of a base metal including at least one of iron and nickel, at least about 11 wt.% chromium and no more than about 0.06 wt.% carbon. The surfaces of the par...

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Bibliographische Detailangaben
Hauptverfasser:	SANDRA L BROSIOUS, STEPHEN ARTHUR GEIBEL, JOHN L HURLEY
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS 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 FERROUS OR NON-FERROUS ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL POWDER METALLURGY SEPARATION SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	The porous metal media comprise sintered metal particulates each having a core and a surface, the particulates comprising at least about 60 wt.% of a base metal including at least one of iron and nickel, at least about 11 wt.% chromium and no more than about 0.06 wt.% carbon. The surfaces of the particulates are enriched with at least one treatment element in an amount and depth sufficient to enhance the resistance of the particulates to undesirable oxidation. The invention also includes a fine metal filter medium formed from sintered metal fibres, which has enhanced resistance to corrosion and/or to high temperature oxidation.