Solid state reactions and thermodynamics of strontium aluminates via (SrO-Al2O3).B2O3 for luminescent nano phosphors

Nadia Khaled Zurba¹; José Maria da Fonte Ferreira²

¹ Federal University of Ceara (UFC) and University of Aveiro (UA); ² University of Aveiro

doi:10.20906/CPS/CON-2016-1601

Resumo

Strontium aluminate materials were prepared by solid-state reactions. Some independent factors of the strontium aluminates crystallizations, such as thermo chemical performance of the reagents and the effects of boron flux addition are reported. A number of balanced compositions on the (SrO-Al2O3).B2O3 system using a phase diagram were studied. The elucidation of the thermodynamic features of the crystallization was commenced with measurements of XRD, DTA, TG, SEM and HR-TEM analysis.

Palavras-chave: Solid state reactions; Thermodynamic ; Enthalpy; Strontium aluminate; Crystallization