%0 Journal Article
%A Correcher, V.
%A García Guinea, Javier
%A Gonzalez Martin, Rafael
%A Crespo Feo, María Elena
%A Jimenez Cordero, D
%T Study of aluminium oxide from high-alumina refractory ceramics by thermoluminescence
%D 2008
%@ 02504707
%U https://hdl.handle.net/20.500.14352/88119
%X This work is focused on the study of the thermally stimulated blue emission of aluminium oxide (A1203) that has been removed from twenty different high alumina-rich refractory bricks. The glow curve sensitivity of several alumina grains are defined by (i) a maximum centred at about 165°C that can be deconvoluted into two first order kinetic peaks at 157 and 177°C and (ii) a broad structure over 200-220°C that suggests a continuous trap distribution system. The isolated grains, analysed by means of X-ray diffraction, are composed of 43% of alumina (A12O3), 22% of mullite [72% of A12O3 and 28% of Si02], 12% of leucite (KAISi206) and 23% of sillimanite [Al 203Si02]. The sample characterization has been performed using X-ray fluorescence and scanning electron microscopy.
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