Thermocouple, particularly for electro-thermic cooling, and method of producing it

A thermo-couple, particularly for use for electro-thermal refrigeration, comprises at least one element composed of a solid solution of Bi2 Te3 and Sb2 Te3, the atomic proportion of Sb atoms being between 24% and 36%, preferably 28%, and that of Bi atoms being between 4% and 16%, preferably 12%. The...

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Bibliographische Detailangaben
1. Verfasser:	BIRKHOLZ ULRICH
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS BLASTING CHEMISTRY COMBINED HEATING AND REFRIGERATION SYSTEMS ELECTRICITY FERROUS OR NON-FERROUS ALLOYS HEAT PUMP SYSTEMS HEATING LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING METALLURGY PERFORMING OPERATIONS REFRIGERATION MACHINES, PLANTS OR SYSTEMS REFRIGERATION OR COOLING TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS
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Beschreibung
Zusammenfassung:	A thermo-couple, particularly for use for electro-thermal refrigeration, comprises at least one element composed of a solid solution of Bi2 Te3 and Sb2 Te3, the atomic proportion of Sb atoms being between 24% and 36%, preferably 28%, and that of Bi atoms being between 4% and 16%, preferably 12%. The solid solution may contain up to 1% by weight of at least one element of the VIth Group of the Periodic System, e.g. S and/or Se (preferably 0,6% by weight). The thermo-couple element, which may be used with a second element of n-type Bi2 Te3 containing 0,1% by weight of Ag I, is prepared by the fusion of Bi2 Te3 and Sb2 Te3, the solid solution so formed being pulverised and worked up by powder metallurgy; the grain size, pressure, and sintering temperature, time, and atmosphere are chosen to produce satisfactory thermo-electric properties. Reference has been directed by the Comptroller to Specification 834,593.