Relationship between effective ionic radii, structure and electro-mechanical properties of zirconia stabilized with rare earth oxides M2O3 (M = Yb, Y, Sm)

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Authors

HARTMANOVÁ M. LOMONOVA E.E. KUBEL F. SCHNEIDER J. BURŠÍKOVÁ Vilma JERGEL M. NAVRÁTIL Vladislav KUNDRACIK F.

Year of publication 2009
Type Article in Periodical
Magazine / Source Journal of Materials Science
MU Faculty or unit

Faculty of Science

Citation
Field Solid matter physics and magnetism
Keywords Relationship; effective ionic radii; structure; electro-mechanical properties of zirconia; stabilized with rare earth oxides; M2O3
Description Zirconia stabilized with various concentrations of rare earth oxides of Yb, Sm and Y with different effective ionic radii ratio between the dopant and host cations was studied. In particular, structure, phase composition, compositional range for existence of cubic solid solutions and their phase transformations, stabilization degree of high-temperature phases and the crystal chemistry and type of solid solutions were investigated. These findings were related to the measured material characteristics, namely the electrical conductivity, microhardness and effective elastic modulus, to elucidate various effects important for practical applications, such as an increase of electrical conductivity due to the pyrochlore phase occurrence or an increase of microhardness arising from the effect of dynamic strain ageing.
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