The Influence of Sintering Conditions on Microstructure of La-Ca-Sr-Mn-O Magnetocaloric Ceramics

A La0.67Ca0.33-xSrxMnO3 (x=0.33; 0.03; 0) perovskite magnetocaloric powders were prepared by solid state synthesis in air. Phase transformations were characterized by thermal analyses and the phase composition was confirmed by X-ray powder diffraction. Pressed pellets were sintered at different temp...

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Veröffentlicht in:	Materials science forum 2014-04, Vol.782, p.503-506
Hauptverfasser:	Antal, Vitaliy, Kavečanský, Viktor, Diko, Pavel, Zmorayova, Katarina, Piovarči, Samuel, Radusovska, Monika
Format:	Artikel
Sprache:	eng
Schlagworte:	Diffraction Materials science Microscopy Microstructure Pellets Phase composition Sintering (powder metallurgy) Thermal analysis
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Zusammenfassung:	A La0.67Ca0.33-xSrxMnO3 (x=0.33; 0.03; 0) perovskite magnetocaloric powders were prepared by solid state synthesis in air. Phase transformations were characterized by thermal analyses and the phase composition was confirmed by X-ray powder diffraction. Pressed pellets were sintered at different temperatures. Microstructure analyses were done by polarized light microscopy and scanning electron microscopy. The influence of sintering conditions on porosity, grain size and content of secondary phases is shown.
ISSN:	0255-5476 1662-9752 1662-9752
DOI:	10.4028/www.scientific.net/MSF.782.503