POLYCRYSTALLINE MAGNETOCALORIC MATERIALS

POLYCRYSTALLINE MAGNETOCALORIC MATERIALS

The invention relates to 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, wherein up to 30 mole % of Mn or Co may be replaced with Fe, Ni, Cr, V or Cu, or up to 30 mole % of Mn, Co or Ge may be repla...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: REESINK, BENNIE
Format: Patent
Sprache:eng ; fre
Schlagworte:
ALLOYS
BASIC ELECTRIC ELEMENTS
CHEMISTRY
ELECTRICITY
FERROUS OR NON-FERROUS ALLOYS
INDUCTANCES
MAGNETS
METALLURGY
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
TRANSFORMERS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:The invention relates to 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, wherein up to 30 mole % of Mn or Co may be replaced with Fe, Ni, Cr, V or Cu, or up to 30 mole % of Mn, Co or Ge may be replaced with vacancies, wherein phases of the orthorhombic TiNiSi structure type and of the hexagonal Ni2ln structure type are present at temperatures below -40ºC.