Abstract
Compositions of ZrO2-Al2O3 nanocomposites in the range 10 to 90% wt. of Al were obtained using microwave hydrothermal (MW) synthesis, and sol-gel (SG) method. The use of nanomaterial components as starting ingredients yielded a new nanocomposite material were t-ZrO2 is stabilized by Al2O3 presence after annealing up to 1450°C. Characterization of nanopowders was conducted using X-Ray diffraction (XRD), differential scanning calorimetry and termogravimetry (DSC-TG) methods, specific surface area measurement by BET, density, Raman spectroscopy, and by scanning electron microscopy (SEM). The MW synthesis produces more consistent samples then SG method which yield in amorphous product. All powders after heating up to 1450°C showed fully crystalline phases where the amount of t-ZrO2 increased with increasing percentage quantity of Al (isolation effect).
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