POLYCRYSTALLINE MAGNETOCALORIC MATERIALS

What are described are polycrystalline magnetocaloric materials of the general formula MnaCobGecAx with A, B or C 0 x 0.5, 0.9 a 1.1, 0.9 b 1.1, 0.9 c 1.0, where up to 30 mol % of the Mn or Co may be replaced by Fe, Ni, Cr, V or Cu or up to 30 mol % of the Mn, Co or Ge may be replaced by vacancies,...

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Bibliographische Detailangaben
1. Verfasser:	REESINK BENNIE
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES ALLOYS BASIC ELECTRIC ELEMENTS BLASTING CHEMISTRY COMBINED HEATING AND REFRIGERATION SYSTEMS DYES ELECTRICITY FERROUS OR NON-FERROUS ALLOYS HEAT PUMP SYSTEMS HEATING INDUCTANCES LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MAGNETS MANUFACTURE OR STORAGE OF ICE MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE MECHANICAL ENGINEERING METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS POLISHES REFRIGERATION MACHINES, PLANTS OR SYSTEMS REFRIGERATION OR COOLING SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES TRANSFORMERS TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS
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Beschreibung
Zusammenfassung:	What are described are polycrystalline magnetocaloric materials of the general formula MnaCobGecAx with A, B or C 0 x 0.5, 0.9 a 1.1, 0.9 b 1.1, 0.9 c 1.0, where up to 30 mol % of the Mn or Co may be replaced by Fe, Ni, Cr, V or Cu or up to 30 mol % of the Mn, Co or Ge may be replaced by vacancies, in which phases of the orthorhombic TiNiSi structure type and of the hexagonal Ni2In structure type are present at a temperature below −40° C.