Abstract
Fine-grained corundum-based ceramics have been obtained by pressing and subsequent sintering a mixture of nanodimensional alumina (Al2O3), magnesia (MgO) and silica (SiO2) powders. The structure and properties of the obtained ceramics have been studied by scanning electron microscopy, scanning probe microscopy, and X-ray diffraction analysis. It is established that the modifying additive of nanodisperse silica (0.05%) produces an almost 40% increase in the microhardness of ceramics.
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