Results 161 to 170 of about 3,632 (200)

Uniform precipitation of Yttria-Stabilized zirconia

Refractories, 1995
An experiment on precipitation of zirconia by urea, urotropin, and ammonium hydroxide precipitants is described. The morphological and phase composition of the precipitated powders are investigated. It is shown that a buffer has a positive effect on reducing the agglomeration.
L. I. Podzorova, A. A. Il'icheva, N. A. Mikhailina, V. Ya. Shevchenko, V. B. Lazarev, A. D. Izotov   +5 more
openaire   +1 more source

Thermal Expansion of Yttria‐Stabilized Zirconia

Journal of the American Ceramic Society, 1964
The thermal expansion of yttria-stabilized zirconia was measured in air and in a high-oxygen atmosphere. Room temperature-to-1000 deg C expansion measurements were made in an automatic recording dilatometer. Measurements above 1000 deg C were made in an oxide induction furnace and the change in length of the specimen was measured with telemicroscopes ...
T. H. NIELSEN, M. H. LEIPOLD
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Vanadia reactions with yttria stabilized zirconia

Journal of Applied Physics, 1988
The reaction of vanadia films with yttria stabilized single-crystal cubic and polycrystalline cubic-tetragonal zirconias was studied using Rutherford backscattering (RBS) and x-ray diffraction, with some selected depth profiling studies. Vandium on zirconia readily oxidizes at 500 °C to form vanadia films.
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Preparation of nanocrystalline yttria-stabilized zirconia

Journal of Materials Research, 1995
Nanocrystalline 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, Dai Huang, Steven P. Ostrander, Walter A. Schulze, Gregory C. Stangle   +4 more
openaire   +1 more source

The Defect Structure of Yttria Stabilized Zirconia

MRS Proceedings, 1985
AbstractWe present results of EXAFS and computer simulation studies of the defect structure of yttria-stabilised zirconia. The results are analysed in terms of dopant-vacancy association models for this phase.
C.R.A. Catlow, A.V. Chadwick, A.N. Cormack, G.N. Greaves, M. Leslie, L.M. Moroney   +5 more
openaire   +1 more source

Electrostatic dispersion of yttria-stabilized zirconia

Powder Technology, 1987
Abstract These results merely indicate that the isoelectric point for this powder is substantially different than that commonly accepted for ‘stabilized zirconia’. It is recommended that this difference be taken into account in designing process systems for the material.
openaire   +1 more source

Retention of iodine in yttria stabilized zirconia

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1999
The diffusion behavior of iodine in yttria stabilized zirconia (YSZ) was investigated as a function of the temperature. Iodine implantation was performed in this cubic solid solution by irradiating material samples with 1 MeV iodine ions. The distribution of iodine was evaluated by using TRIM computer calculation and measured by Rutherford ...
Pouchon, Manuel A., Döbeli, Max, Degueldre, Claude   +2 more
openaire   +4 more sources

Microwave synthesis of yttria stabilized zirconia

Materials Research Bulletin, 2005
Yttria 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, Gilles Caboche, Didier Stuerga, Denis Chaumont   +3 more
openaire   +1 more source

In Vitro Aging of Yttria‐Stabilized Zirconia

Journal of the American Ceramic Society, 1989
Yttria‐stabilized zirconia was aged in distilled water, saline, and Ringer's solution for 140, 304, and 453 d. The significant decreases in strength (13% to 22%) is attributed to the phase transformation of zirconia from tetragonal to monoclinic. The effect of aging stabilized zirconia in physiological media is still unresolved.
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A Cluster Modelling Study of Conductivity of Yttria-Stabilized Zirconia

MRS Proceedings, 1992
AbstractOn the basis of a previously described structural model for the Yttria-Stabilized Zirconia, the conductivity for this material can be calculated. A fixed number of clusters is generated in a structure of 70×28 polyhedra to simulate different Y contents in the structure.
DEPERO, Laura Eleonora, Zocchi, Marcello, Parmigiani, Fulvio   +2 more
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