Results 241 to 250 of about 21,258 (284)

Synthesis of stable nanocrystalline cubic zirconia

Materials Research Bulletin, 2000
Abstract Nanocrystalline pure cubic zirconia was prepared by precipitation in polymer matrix. The average particle size obtained by this method was smaller than that obtained by aqueous coprecipitation. X-ray diffraction showed that the cubic form is stable in air up to 1173 K and partially stable in an inert argon atmosphere up to 1273 K.
S. K. Roy, J. Ghose
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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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Radiation damage in cubic-stabilized zirconia

Journal of Nuclear Materials, 2013
Abstract Cubic yttria-stabilized zirconia (YSZ) can be used for nuclear applications as an inert matrix for actinide immobilization or transmutation. Indeed, the large amount of native oxygen vacancies leads to a high radiation tolerance of this material owing to defect recombination occurring in the atomic displacement cascades induced by fast ...
Jean-Marc Costantini, William J. Weber, William J. Weber, François Beuneu   +3 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)
C. R. Aita, J. D. DeLoach, Chun-Keung Loong   +2 more
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Interface Structure of an Epitaxial Cubic Ceria Film on Cubic Zirconia

Journal of the American Ceramic Society, 2003
A cubic CeO2 (001) film with a thickness of ∼58 nm was grown epitaxially on Y2O3‐stablized cubic ZrO2 by oxygen‐plasma‐assisted molecular‐beam epitaxy (OPA‐MBE). The interface was characterized using high‐resolution transmission electron microscopy (HRTEM). The interface exhibited coherent regions separated by equally spaced misfit dislocations.
Charles H. F. Peden, Chong M. Wang, Suntharampillai Thevuthasan   +2 more
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Electro‐Sintering of Yttria‐Stabilized Cubic Zirconia

Journal of the American Ceramic Society, 2013
Electro‐sintering, i.e., electrically enhanced densification without the assistance of Joule heating, has been observed in 70% dense 8 mol% Y2O3‐stabilized ZrO2 ceramics at temperatures well below those for conventional sintering. Remarkably, full density can be obtained without grain growth under a wide range of conditions, including those standard ...
Suk-Joong L. Kang, Seung-Wan Kim, Seung-Wan Kim, I-Wei Chen   +3 more
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Thermal behaviour of cesium implanted in cubic zirconia

Journal of Nuclear Materials, 2009
Cesium ions were implanted at the energy of 300 keV in YSZ at 300 and 1025 K, with increasing fluences up to 5 x 10(16) cm(-2). Concentration profiles were determined by Rutherford Backscattering Spectrometry (RBS) measurements. Transmission Electron Microscopy (TEM) experiments were achieved to determine the nature of the damages and to characterize a
Laetitia Vincent, O. Kaïtasov, F. Garrido, Lionel Thomé   +3 more
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Electron Irradiation Damage in Stabilized Cubic Zirconia

Materials Science Forum, 2005
We report the formation of anomalous defect clusters in yttria stabilized zirconia (YSZ: 13 mol% Y2O3-ZrO2), which are a primary candidate for inert matrix fuels. Electron irradiation with 100 to 1000 keV is found to induce characteristic defect clusters.
Chiken Kinoshita, A. I. Ryazanov, Syo Matsumura, Kazuhiro Yasuda   +3 more
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Translucency of IPS e.max and cubic zirconia monolithic crowns

The Journal of Prosthetic Dentistry, 2018
Although several monolithic zirconia ceramics have recently been introduced, the need for improved optical properties remains. The newest cubic-zirconia has been claimed to have optimal translucency characteristics for esthetic restorations.This in vitro study evaluated the optical properties of novel cubic ultratranslucent (UT) and supertranslucent ...
Baldissara, Paolo, Wandscher, Vinícius Felipe, Marchionatti, Ana Maria Estivalete, Parisi, Candida, Monaco, Carlo, Ciocca, Leonardo   +5 more
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Stabilization of Cubic Zirconia by Aluminum Nitride

Journal of the American Ceramic Society, 1989
Cubic ZrO2 is stabilized at room temperature by the addition of AIN. The percentage of c‐ZrO2 in the mixture of c‐ZrO2 and m‐ZrO2 increases linearly with the addition of up to 20 mol% AIN and decreases thereafter. Stabilization becomes complete at 50 mol% AIN. The lattice spacing of the cubic phase gradually expands up to 20 mol% AIN.
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