Results 211 to 220 of about 7,790 (256)

Superplasticity in Zirconia and Yttria Stabilized Zirconia Mixed Powders

Materials Science Forum, 1999
Improved elongations were obtained for samples prepared from a novel powder of 2.5 mol % yttria stabilized zirconia when compared to the commercial powders used up to date. The novel powder consists of mixing two phases, zirconia and 6 mol % yttria stabilized zirconia particles to give an average composition of 2.5 mol % yttria.
Kazutaka Sasaki, Yuichi Ikuhara, Taketo Sakuma   +2 more
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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 Alexandre, Döbeli, M., Degueldre, Claude   +2 more
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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
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Deformation mechanisms in yttria-stabilized zirconia

Journal of Materials Science, 1988
Yielding 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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Continuous yttria‐stabilized zirconia fibers

Advanced Materials, 1996
Polycrystalline oxide fibers have not yet been exploited to their full potential, perhaps because of difficulties with processability. In the successful new route for the production of continuous yttria‐stabilized zirconia fibers detailed here, ZrO2 particles sols are used as oxide‐forming components.
Bernd Clauss, Andrea Grüb, Wilhelm Oppermann   +2 more
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The dielectric properties of yttria-stabilized zirconia

Materials Letters, 1989
Abstract The dielectric properties of yttria-stabilized cubic zirconia were measured over a wide range of frequency (100 to 1 × 10 10 Hz) and temperature (25 to 200°C). The dielectric constant and loss increased with temperature owing to the presence of mobile oxygen vacancies.
M.T. Lanagan, J.K. Yamamoto, A. Bhalla, S.G. Sankar   +3 more
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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
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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
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Conduction mechanism in yttria stabilized zirconia

Physics Letters A, 1967
Abstract 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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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