A physicomechanical and Raman investigation of partially stabilized zirconia ceramics with an additive of magnesium monoxide is described. It is shown that for temperatures from 59 to −60°C the material undergoes a low-temperature elastic-inelastic transformation, whereas the Raman spectra exhibit only a gradual variation of the phase composition with reduction of the temperature. In crystals with additives of yttria and ceria no substantial phase transformation related to the introduction of an indentor was discovered. A comparative analysis of Raman spectra of cubic zirconia crystals and ceramics with yttrium and ferric oxides has been made, with the conclusion that the special features of the processes controlling the mechanical behavior of such materials should be studied in greater detail.
Refractories and Industrial Ceramics – Springer Journals
Published: Nov 27, 2007
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