Material for thermocouples and thermoelectric generators PP125
Purpose and areas of usage
The development concerns materials science, new intermetallic thermoelectric alloys. It can be used in the manufacture of devices such as thermoelectric generators for direct conversion of thermal energy to electric. Thermoelectric generators are widely used in various technological processes, due to the large volumes of so - called "excess" (convertible) heat. Thanks to the work in the opposite direction, thermoelectric generators can be used as cooling devices. Such refrigerators do not require compressors and harmful refrigerants that destroy the ozone layer of the atmosphere
Main characteristics of development
New thermoelectric materials are offered on the basis of intermetallic semiconductors of structural type MgAgAs. These materials provide a force factor of about 30 μW (K2 ∙ cm) at 300 K and a thermoelectric power of more than 350 μV / K at 400 K
Main advantages of development
An essential advantage of the materials developed is the simple method of synthesis (electric arc welding), as well as the relative cheapness and non - toxicity of the original components. Modification of the component composition of such semiconductors leads to improved thermoelectric characteristics.
Areas of demand: machine - building, automobile, space, instrument - making.