Results 271 to 280 of about 27,341 (293)
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Annihilation of paramagnetic centers in yttria-stabilized zirconia
Solid State Ionics, 1991Abstract We propose, starting from a simple energy level structure, a model for the kinetics of thermal annihilation of paramagnetic centers induced in yttria-stabilized zirconia. Previous experimental works show very different activation energies and frequency factors from sample to sample.
AZZONI, C, PALEARI, ALBERTO MARIA FELICE
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Solvothermal synthesis of zirconia and yttria-stabilized zirconia nanocrystalline particles
Journal of Materials Research, 2007A solvothermal method was used to prepare zirconia and yttria-stabilized zirconia (YSZ) particles using zirconium hydroxide and yttrium hydroxide particles as precursors and ethanol or isopropanol as reaction media. The particle properties were characterized with x-ray diffractometry, scanning electron microscopy, transmission electron microscopy ...
Wang, Xin M., Xiao, Ping
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Raman Investigation of the Nitridation of Yttria‐Stabilized Tetragonal Zirconia
Journal of the American Ceramic Society, 2003Raman spectroscopy has been used to obtain Raman spectra of yttria‐stabilized tetragonal zirconia subject to surface nitridation induced by contact with zirconium nitride. Raman spectra recorded from regions at increasing distance from the source of nitridation have been used to obtain diffusion profiles from samples treated at different times and ...
G. DEGHEHGHI, T. J. CHUNG, SERGO, VALTER
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In Vitro Aging of Yttria‐Stabilized Zirconia
Journal of the American Ceramic Society, 1989Yttria‐stabilized zirconia was aged in distilled water, saline, and Ringer's solution for 140, 304, and 453 d. The significant decreases in strength (13% to 22%) is attributed to the phase transformation of zirconia from tetragonal to monoclinic. The effect of aging stabilized zirconia in physiological media is still unresolved.
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A Cluster Modelling Study of Conductivity of Yttria-Stabilized Zirconia
MRS Proceedings, 1992AbstractOn the basis of a previously described structural model for the Yttria-Stabilized Zirconia, the conductivity for this material can be calculated. A fixed number of clusters is generated in a structure of 70×28 polyhedra to simulate different Y contents in the structure.
DEPERO, Laura Eleonora +2 more
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Temperature dependence of the yttria-stabilized zirconia Raman spectrum
Journal of Applied Physics, 2007The Raman spectrum of 5wt% yttria-stabilized tetragonal zirconia from 25to1250°C is reported. All six Raman bands broaden and shift toward lower energy with increasing temperature. The shift associated with thermally induced volume changes is shown to be the main contribution for all bands, but does not explain the unexpected negative value of the ...
LUGHI, VANNI, Clarke D. R.
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