A procedure to study thermo- and electrophysical properties of materials

We describe a measurement procedure and the construction of an automatic measuring complex to study thermal conductivity by an absolute stationary method and also electrical conductivity and thermal EMF of materials in a temperature range from −60 to +4400 ° C. The use of a specialized microprocesso...

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Bibliographic Details
Published in:Inorganic materials 2009-12, Vol.45 (14), p.1631-1634
Main Author: Shtern, Yu. I.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Control systems
Devices
Electrical resistivity
Heat transfer
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Materials Science
Microprocessors
Resistivity
Thermal conductivity
Thermoelectricity
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Description
Summary:We describe a measurement procedure and the construction of an automatic measuring complex to study thermal conductivity by an absolute stationary method and also electrical conductivity and thermal EMF of materials in a temperature range from −60 to +4400 ° C. The use of a specialized microprocessor system to perform stationary measurements and to control parameter measurement processes in combination with highgrade measuring devices and equipment developed for this procedure enables high accuracy of measurements. Test studies performed on reference samples show that the thermal conductivity measurement error does not exceed 4 and 3% for electrical conductivity and thermal EMF, respectively. In the development of devices and equipment for this measuring complex, unconventional engineering, schematic, and programming solutions are implemented. The application of a microprocessor control system together with the software developed allows the measurements to be performed automatically.
ISSN:0020-1685
1608-3172
DOI:10.1134/S0020168509140234