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Subsurface segregation of yttria in yttria stabilized zirconia
Journal of Applied Physics, 2002The segregation behavior in 3 and 10 mol % polycrystalline yttria stabilized zirconia (YSZ), calcined at temperatures ranging from 300 to 1600 °C, is characterized using low-energy ion scattering (LEIS). In order to be able to separate the Y and Zr LEIS signals, YSZ samples have been prepared using isotopically enriched Z94rO0 instead of natural ...
M. de Ridder +6 more
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Journal of the American Ceramic Society, 2002
The low bonding strength between hydroxyapatite (HA) and the metal substrate interface of plasma‐sprayed HA coating has been a point of potential weakness in its application as a biomedical prosthesis. In the present study, yttria‐stabilized (8 wt%) zirconia (YSZ) has been used to enhance the mechanical properties of HA coatings.
Lei Fu, Khiam Aik Khor, Joo Peng Lim
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The low bonding strength between hydroxyapatite (HA) and the metal substrate interface of plasma‐sprayed HA coating has been a point of potential weakness in its application as a biomedical prosthesis. In the present study, yttria‐stabilized (8 wt%) zirconia (YSZ) has been used to enhance the mechanical properties of HA coatings.
Lei Fu, Khiam Aik Khor, Joo Peng Lim
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Threshold displacement energy in yttria‐stabilized zirconia
physica status solidi c, 2007AbstractWe have studied the color center production in yttria‐stabilized zirconia single crystals (i.e. ZrO2: Y with 9.5 mol% Y2O3) with the (100) orientation, by electron irradiations at energies ranging between 1.0 and 2.5 MeV. Electron paramagnetic resonance (EPR) measurements show that three paramagnetic centers are stable at room‐temperature: i ...
Costantini, Jean-Marc, Beuneu, Francois
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Microwave synthesis of yttria stabilized zirconia
Materials Research Bulletin, 2005Yttria stabilised zirconia (YSZ) nanocrystals, with a mean size between 5 and 10 nm, were prepared by microwave flash synthesis. Flash synthesis was performed in alcoholic solutions of yttrium, zirconium chloride and sodium ethoxide (EtONa) using a microwave autoclave (RAMO system) specially designed by authors.
Lionel Combemale +3 more
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Palladium-Modified Yttria-Stabilized Zirconia Membranes
Industrial & Engineering Chemistry Research, 2000The reservoir method was applied to produce a continuous palladium (Pd) phase inside the porous yttria-stabilized zirconia (YSZ) membranes. Thin porous YSZ membranes were prepared from YSZ suspension, and the pores were modified with Pd by the liquid-phase impregnation method.
Jinsoo Kim, Y. S. Lin
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X-ray photoelectron spectroscopic studies on yttria, zirconia, and yttria-stabilized zirconia
Journal of Applied Physics, 1991Surfaces of yttria, zirconia, and yttria-stabilized zirconia were studied using x-ray photoelectron spectroscopy. An almost threefold increase in the surface yttrium concentration was observed in the yttria-stabilized zirconia samples. The core level binding energies of yttrium, zirconium, and oxygen ions in yttria-stabilized zirconia showed chemical ...
Debasis Majumdar, Dilip Chatterjee
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Deformation mechanisms in yttria-stabilized zirconia
Journal of Materials Science, 1988Yielding behaviour and deformation modes are characterized for single-crystal and polycrystalline yttria-stabilized ZrO2 tested in compression from 23 to 800° C. The plastic flow of single-crystal specimens is shown to be orientation and temperature dependent, and is interpreted in terms of dislocation activity, transformation plasticity, and ...
J. Lankford, R. A. Page, L. Rabenberg
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Preparation of nanocrystalline yttria-stabilized zirconia
Journal of Materials Research, 1995Nanocrystalline powder with an average crystallite size of 8–12 nm, which was produced by a combustion synthesis process, was used to prepare dense, nanocrystalline articles. Green compacts of high green density were prepared by dry pressing and densified by a fast-firing process.
K.R. Venkatachari +4 more
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Conduction mechanism in yttria stabilized zirconia
Physics Letters A, 1967Abstract Analysis of potential distribution curves in 10 Y 2 O 3 : 90 ZrO 2 at 1380°C has shown an electronic hole contribution to the conductivity to have an oxygen partial pressure dependence of p O 2 . This is postulated to arise from the reaction 1 2 O 2 ( gas ) + □ O 2 → O 2- + 2 h .
R.E.W. Casselton, J.C. Scott
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High‐temperature stability in yttria‐stabilized zirconia
Heat Transfer—Asian Research, 2008AbstractYttria‐stabilized zirconia has been studied as a candidate standard reference material for the determination of thermal properties. This study evaluated the high‐temperature stability, which is important for yttria‐stabilized zirconia to be used for a standard reference material, using a common material of fine ceramics, Referceram ZR1 ...
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