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With the aim to obtain dense composites containing spinel (MgAl2O4) and calcium hexaluminate (CaAl12O19), the effect of Y2O3 addition on the sintering, microstructure and mechanical properties of MgAl2O4CaAl4O7CaAl12O19 composite was investigated by solid state reaction sintering at 1500–1600 °C. The results showed that the Y2O3 addition had significant effects on the densification and microstructure...
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