Results 1 to 10 of about 3,180 (200)

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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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
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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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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
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Growth-controlled cubic zirconia microstructure in zirconia–titania nanolaminates

Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, 2002
Zirconia microstructure selection (phase and crystallographic orientation) was studied in sputter-deposited multilayer films consisting of nanocrystalline ZrO2 and amorphous TiO2. The goal was to understand the mechanism for ZrO2 microstructure selection as a function of nanolaminate architecture (number of interfaces and ZrO2 and TiO2 layer thickness)
J. D. DeLoach, C. R. Aita, C.-K. Loong
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Electronic structure of cubic and tetragonal zirconia

Physical Review B, 1991
The electronic structure of tetragonal zirconia with {ital D}{sub 4{ital h}}{sup 15} symmetry is investigated using density-functional theory. The Kohn-Sham equations are solved by applying the full-potential linearized augmented-plane-wave method.
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Interface Structure of an Epitaxial Cubic Ceria Film on Cubic Zirconia

Journal of the American Ceramic Society, 2003
A cubic CeO 2 (001) film with a thickness of ∼58 nm was grown epitaxially on Y 2 O 3 ‐stablized cubic ZrO 2 by oxygen‐plasma‐assisted molecular‐beam epitaxy (OPA‐MBE).
Chong‐Min Wang, Suntharampillai Thevuthasan, C. H. F. Peden   +2 more
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Stabilization of cubic zirconia by carbon nanotubes

Materials Science and Engineering: A, 2004
Abstract Liquid–liquid two-phase method was used for fabricating Zirconia (ZrO 2 ) nanoparticles, sodium bis(2-ethylhexyl) sulfosuccinite (AOT) surfactant and carbon nanotubes (CNTs) were added into the solution. It has been shown that CNTs acted as the medium during the drying and burning process, which was very important to the formation of ZrO 2 ...
T.Y Luo, T.X Liang, C.S Li
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Low Temperature Stability of Cubic Zirconia

physica status solidi (a), 2000
A 9 mol% Y 2 O 3 -stabilized ZrO 2 specimen was annealed in boiling water for 1200 h, and the phase structure was examined by XRD and the chemical states of zirconium, yttrium and oxygen were examined by XPS. After annealing, the phase of the specimen remains entirely cubic, and the chemical states of the elements are not remarkably changed ...
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