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A mullite/mullite nanocomposite powder has been synthesized, composed of nanometer-size 3Al2O3·2SiO2 (‘3/2’) mullite precipitates within a matrix of the high alumina 2Al2O3·SiO2 (‘2:1’) mullite. Historically, the transition from the metastable high-alumina phase to the thermodynamically stable ‘3:2’ phase of mullite has been thought to be a continuous process, involving a continuous solid solution...
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