Authors

Methods of investigation of mechanical properties and structure of nanomaterials for thermoelectric coolers

UDC 621.565.83

Methods of investigation of mechanical properties and structure of nanomaterials for thermoelectric coolers

Lev P. Bulat, Tabachkova N. U., Bublik V. T., Karatayev V. V., Osvenskiy V. B., Pivovarov G. I.

Abstract
Due to nanotechnologies being applied during recent years it became possible to essentially improve energy parameters of materials for thermoelectric coolers. The most practically feasible way to obtain effective nanostructured thermoelectric materials consists in creation of nanopowders by the mechanoactivating treatment of a starting crystalline material. The present paper considers a complex of methods that were either developed or modified for studying mechanical properties and structure of nanocrystalline thermoelectric materials, namely including: measuring moduli of elasticity and density, investigation ofmicrostruc- ture. X-ray difractometering methods embraced phase analyses, measuring of lattice spacing, definition of coherent scattering area sizes of micro strains and analysis of texture, electron-scan microscope measurements; transmission electron microscopy and X-ray photoelectron spectroscopy being used as well. Presented are certain results of investigating mechanical properties, density, and structure of nanostructured specimens.

Keywords: THERMOELECTRIC MATERIALS, NANOPOWDERS, MECHANICAL PROPERTIES, ACOUSTOMICROSCOPIC IMAGE, STRENGTH CHARACTERISTICS, POWDER DIFRACTOGRAM, DIFFRACTION LOBE SPREADING, ELECTRONIC STRUCTURE OF MATERIALS

All references

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