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

Autor:	Franz Kubel, František Kundracik, Elena E. Lomonova, Matej Jergel, Vilma Buršíková, Jürgen Schneider, Vladislav Navrátil, M. Hartmanová
Rok vydání:	2009
Předmět:	Materials science Ionic radius Dopant Crystal chemistry Mechanical Engineering Pyrochlore Analytical chemistry Mineralogy engineering.material Mechanics of Materials Phase (matter) engineering General Materials Science Cubic zirconia Elastic modulus Solid solution
Zdroj:	Journal of Materials Science. 44:234-243
ISSN:	1573-4803 0022-2461
DOI:	10.1007/s10853-008-3085-0
Popis:	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.
Databáze:	OpenAIRE
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