The Effect of Diamond Bur Wear During Grinding on the Marginal Gap of Zirconia Lithium Silicate Single Crowns: An In Vitro SEM Analysis. [PDF]
Dent J (Basel)Avrahami R +5 more
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The Systems Zirconia‐Lanthana and Zirconia‐Neodymia
Journal of the American Ceramic Society, 1955The minimum amounts of lanthana and neodymia required to stabilize zirconia into a cubic form are 30 and 20 mole %, respectively, at 980°C. X‐ray diffraction studies have established the upper limit of the two cubic solid solution regions as approximately 40 mole %.
FRANK H. BROWN, POL DUWEZ
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Enhancing the bioactivity of zirconia and zirconia composites by surface modification
Journal of Biomedical Materials Research Part B: Applied Biomaterials, 2012AbstractAmong bioceramics, zirconia (ZrO2) and alumina (Al2O3) possess exceptional mechanical properties suitable for load‐bearing and wear‐resistant applications but the poor bioactivity of these materials is the major concern when bonding and integration to the living bone are desired.
Mahdi, Dehestani +2 more
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Creep behaviour of alumina, zirconia and zirconia-toughened alumina
Journal of the European Ceramic Society, 1997no ...
Chevalier, Jérome +3 more
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Surface characterization of zirconia, holmium oxide/zirconia and sulfated zirconia catalysts
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2006Abstract Zirconia-supported holmium oxide, as well as their sulfated catalysts using (NH 4 ) 2 SO 4 were prepared by wet impregnation and calcined at different temperatures. The samples thus obtained were subjected to bulk and surface texture analysis using X-ray powder diffractometry (XRD) and N 2 -sorptiometry, respectively.
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Effects of zirconia phase on the synthesis of higher alcohols over zirconia and modified zirconia
Journal of Molecular Catalysis A: Chemical, 2004The catalytic performances of ZrO2-based catalysts were evaluated for the synthesis of higher alcohols from synthesis gas. The crystal phase structures were characterized by X-ray diffraction (XRD) and UV Raman. The results indicated that ZrO2 and Pd modified ZrO2 catalysts were effective catalysts in the synthesis of ethanol or isobutanol, and their ...
Daiping He +3 more
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Anodic Polarization Related to the Ionic Conductivity of Zirconia at Ni-Zirconia/Zirconia Electrodes
Journal of The Electrochemical Society, 2001To clarify the extension of the triple phase boundary (TPB), which directly affects the electrode polarization behavior, in the cermet layer of the Ni zirconia anode, we studied the anodic polarization properties of four types of Ni-zirconia cermets (Ni-0YZC Ni-3YZC, and Ni-8YZC) on three types of zirconia electrolytes (3YZE, 5YZE, and 8YZE).
Xiaoge Wang +2 more
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Stability of cubic zirconia and of stoichiometric zirconia nanoparticles
Physics of the Solid State, 2006Using 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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State of platinum in zirconia and sulfated zirconia catalysts
Catalysis Letters, 1996Platinum is present in a metallic state following activation in air at 725‡C of both 5 wt% Pt/ZrO2 and 5 wt% Pt/SO 4 2− /ZrO2. Reduction of either catalyst at 725‡C produces a Pt-Zr alloy, and these reduced catalysts, upon recalcination in air at 725‡C, form metallic Pt crystallites.
Ram Srinivasan +2 more
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