This article is cited in 7 papers

Supermicrohardness in ceramics based on nanodisperse alumina powders with additives of magnesia and silica nanopowders

A. V. Nomoev

Buryat State University, Ulan-Ude

Abstract: Fine-grained corundum-based ceramics have been obtained by pressing and subsequent sintering a mixture of nanodimensional alumina (Al$_2$O$_3$), magnesia (MgO) and silica (SiO$_2$) 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.

Received: 17.06.2010

 English version: Technical Physics Letters, 2010, 36:11, 994–997

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