Mechanochemical synthesis and conducting properties of nanostructured rhombohedral scandia stabilized zirconia ceramics

Mechanochemical synthesis and conducting properties of nanostructured rhombohedral scandia stabilized zirconia ceramics

Studies of mechanochemical powders and sintered ceramics in scandia stabilized zirconia system have been carried out by means of XRD technique, Raman spectroscopy and SIMS. Nanostructured single phase ceramics of Zr 0.88Sc 0.1Ce 0.01Y 0.01O 1.955 composition with the room-temperature rhombohedral st...

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Veröffentlicht in:Journal of alloys and compounds 2009-08, Vol.483 (1), p.535-539
Hauptverfasser: Zyryanov, V.V., Uvarov, N.F., Sadykov, V.A., Ulihin, A.S., Kostrovskii, V.G., Ivanov, V.P., Titov, A.T., Paichadze, K.S.
Format: Artikel
Sprache:eng
Schlagworte:
Ionic conduction
Mechanochemical synthesis
Nanostructured materials
X-Ray diffraction
Zirconia
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Zusammenfassung:Studies of mechanochemical powders and sintered ceramics in scandia stabilized zirconia system have been carried out by means of XRD technique, Raman spectroscopy and SIMS. Nanostructured single phase ceramics of Zr 0.88Sc 0.1Ce 0.01Y 0.01O 1.955 composition with the room-temperature rhombohedral structure caused by ordering of oxygen vacancies possesses excellent mechanical strength and unusual conductivity properties with E b ∼ E gb . Decreased level of conductivity at T ∼ 1000 K was explained by incomplete stabilization of cubic phase and admixtures of silica and alumina present in starting ZrO 2 reagent of technical grade.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2008.07.229