Thermal stabilities of the rutile-type (Sn2xFe1xSb1x)O4 solid solutions with x 0:5 were investigated by TG–DTA in flowing O2 up to 1673 K. After thermal analysis the samples were characterised by means of powder X-ray diffraction analysis (XRD), optical and scanning electron microscopy (SEM) observation and electron dispersive spectrometry (EDS) analysis. The decomposition of the solid solution involves the formation of hematite and a volatile Sb oxide, probably Sb4O6. The decomposition temperature increases with the Sn content of the solid solution.
Decomposition of (Sn2xFe1-xSb1-x)O4 solid solutions with x ≤ 0.50
MARTINELLI, ALBERTO;FERRETTI, MAURIZIO
2003-01-01
Abstract
Thermal stabilities of the rutile-type (Sn2xFe1xSb1x)O4 solid solutions with x 0:5 were investigated by TG–DTA in flowing O2 up to 1673 K. After thermal analysis the samples were characterised by means of powder X-ray diffraction analysis (XRD), optical and scanning electron microscopy (SEM) observation and electron dispersive spectrometry (EDS) analysis. The decomposition of the solid solution involves the formation of hematite and a volatile Sb oxide, probably Sb4O6. The decomposition temperature increases with the Sn content of the solid solution.
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