Results 181 to 190 of about 243,823 (237)

Stability of cubic zirconia and of stoichiometric zirconia nanoparticles

Physics of the Solid State, 2006
Using the electron density functional method, it is shown that the oxygen sublattice of cubic zirconia is unstable with respect to random displacements of oxygen atoms, which results in general instability of bulk cubic zirconia at low temperatures.
V. G. Zavodinsky, A. N. Chibisov
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Fabrication of well-dispersive yttrium-stabilized cubic zirconia nanoparticles via vapor phase hydrolysis [PDF]

Progress in Natural Science: Materials International, 2012
The well-dispersive yttrium-stabilized cubic zirconia nanoparticles were fabricated via vapor phase hydrolysis process, and the as-synthesized cubic zirconia nanoparticles were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM),
Qinghong Zhang, Hongzhi Wang, Yaogang Li   +2 more
exaly   +2 more sources

Cubic stabilised zirconias

2022
Abstract Cubic stabilised zirconias (CSZs) have an extremely simple average structure (the fluorite CaF2 structure) but they exhibit extremely complex diffuse X-ray diffraction patterns. Y-CSZ is used as a pedagogical example to show how various simulation methods together with knowledge of basic diffraction theory can be used to give ...
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Nitride‐Stabilized Cubic Zirconia

Journal of the American Ceramic Society, 1978
Mechanical properties of Si/sub 3/N/sub 4/--ZrO/sub 2/ composits were studied. Part of the added ZrO/sub 2/ was stabilized in the cubic lattice form at room temperature. Hot pressing and annealing pure ZrO/sub 2/ in an N/sub 2/ atmosphere caused the cubic phase to form. Cubic ZrO/sub 2/ is not caused by O deficiency.
NILS CLAUSSEN, RUDOLF WAGNER, L. J. GAUCKLER, GÜNTER PETZOW   +3 more
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Zirconia‐Stabilized Cubic Europia

Journal of the American Ceramic Society, 1982
The system Eu 2 O 3 ‐ZrO 2 was studied, concentrating attention on the region 0 to 33 mol% ZrO 2 , which is of interest for fast‐reactor neutron absorber applications.
D. A. MOORE, I. F. FERGUSON
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Structural Transformation in Cubic Zirconia

Journal of the American Ceramic Society, 1987
The structure of CaO‐stabilized cubic zirconia has been investigated by X‐ray diffraction at high temperatures and pressures up to 1000°C and ∼35 GPa, using a diamond‐anvil cell interfaced with aYAG laser heating system. At ∼1000°C and 15 GPa, the cubic phase transforms directly into an orthorhombic phase with the PbCl
Subba Rao Usha Devi, Li Chung Ming, Murli H. Manghnani   +2 more
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Microwave sintering of cubic zirconia

Ceramics International, 2001
Microwave processing is of considerable interest because of its potential applications in the ceramic industry. The present investigation describes the technique for the sintering of yttria stabilised cubic zirconia. Significant advantage in terms of higher density of the ceramics at lower heat work is noted compared to the conventional radiant heat ...
D.D. Upadhyaya, A. Ghosh, K.R. Gurumurthy, Ram Prasad   +3 more
openaire   +1 more source

Hydrothermal degradation of cubic zirconia

Acta Materialia, 2003
Abstract Tetragonal ZrO2 undergoes a tetragonal to monoclinic transformation with the presence of water or water vapor when annealed at relatively low temperatures (65–400 °C); such a transformation has been shown to be due to the annihilation of oxygen vacancies. Nevertheless, cubic ZrO2 has always been presumed to be stable under similar conditions.
Guo, X., He, J.
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Elasto-optical study of stabilized cubic zirconia

Physical Review B, 1995
The piezo-optical coefficients ${\mathrm{\ensuremath{\pi}}}_{11\mathrm{\ensuremath{-}}}$${\mathrm{\ensuremath{\pi}}}_{12}$ and ${\mathrm{\ensuremath{\pi}}}_{44}$ of cubic yttria-stabilized zirconia are measured as a function of wavelength, temperature, and yttria concentration.
, Cai, , Anastassakis
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Photoactivation of hole centers in cubic stabilized zirconia

Physical Review B, 1996
Photoinduced changes of the concentration of paramagnetic and optical defects have been investigated in cubic stabilized zirconia single crystals by means of electron paramagnetic resonance (EPR). Results are reported confirming the presence of photobleaching of the optical and EPR ${\mathrm{Zr}}^{3+}$ electron centers (T centers) in x-ray-irradiated ...
Azzoni, CB, PALEARI, ALBERTO MARIA FELICE   +1 more
openaire   +2 more sources