Title :
Microstructure and transport properties of nanograined powders of CoSb3 obtained with the spray pyrolysis method
Author :
Wojciechowski, K.T. ; Morgiel, J.
Author_Institution :
Dept. of Inorg. Chem., AGH Univ. of Sci. & Technol., Cracow, Poland
Abstract :
The ultrasonic spray pyrolysis (USP) technique has been applied to prepare fine metallic spheres of a CoSb3 skutterudite phase. The microstructure observations were performed using transmission electron microscopy (TEM). It showed that spheres were built either from nanocrystalline or amorphous material. The energy dispersive spectrometry EDS microanalysis and selected area diffraction pattern analysis SADP proved proper chemical and phase composition. The selected thermoelectric parameters of densified powders are comparable to bulk values.
Keywords :
cobalt compounds; electrical conductivity; nanoparticles; nanostructured materials; pyrolysis; spray coatings; thermal conductivity; thermoelectricity; transmission electron microscopy; CoSb3; chemical composition; energy dispersive spectrometry; nanograined powders; phase composition; selected area diffraction pattern analysis; spray pyrolysis method; transmission electron microscopy; transport properties; Amorphous materials; Diffraction; Dispersion; Microstructure; Nanostructured materials; Pattern analysis; Powders; Spectroscopy; Spraying; Transmission electron microscopy;
Conference_Titel :
Thermoelectrics, 2003 Twenty-Second International Conference on - ICT
Print_ISBN :
0-7803-8301-X
DOI :
10.1109/ICT.2003.1287458
