Results 211 to 220 of about 254,263 (255)

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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Hydrothermal Synthesis of Yttria-Stabilized Zirconia Nanocrystals with Controlled Yttria Content

Inorganic Chemistry, 2015
In this study, we demonstrate for the first time the hydrothermal synthesis of yttria-stabilized zirconia (YSZ) nanocrystals with controlled yttria content (x = 3-12 mol %; xYSZ) with negligible aggregation from aqueous solution. The nanocrystals were grown via the hydrothermal treatment of basic Zr(IV) and Y(III) carbonate complex aqueous solutions in
Kazuyoshi, Sato, Kazuya, Horiguchi, Taku, Nishikawa, Sadahiro, Yagishita, Kazuo, Kuruma, Takeshi, Murakami, Hiroya, Abe   +6 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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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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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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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
openaire   +1 more source

Layered structures of yttria-stabilized zirconia sandwiched between platinum/ yttria-stabilized zirconia composites

Journal of Applied Physics, 2001
Layered structures of cubic yttria-stabilized zirconia (YSZ) sandwiched between two layers of platinum/YSZ composites with the platinum concentration varying between 20 and 55 vol % were prepared. Large double-layer capacitances were obtained due to the presence of large three-dimensional electrode surface areas in the composite layers. The layers were
Hendriks, M.G.H.M., Heijman, M.J.G.W., van Zyl, W.E., ten Elshof, J.E.   +3 more
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Ultrasonic attenuation in yttria-stabilized zirconia

Physica B: Condensed Matter, 1999
Abstract The acoustic attenuation at 10 MHz in yttria-stabilized zirconia (ZrO2(Y)) was measured at temperatures between 300 and 600 K. The attenuation curve showed a relaxation peak, from which the activation energy was estimated to be 0.7±0.07 eV , in good agreement with the value obtained from dielectric constant of 0.66±0.07 eV ...
Kenta Kirimoto, Kohji Nobugai, Tatsuro Miyasato   +2 more
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High‐temperature stability in yttria‐stabilized zirconia

Heat Transfer—Asian Research, 2008
AbstractYttria‐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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EXAFS of nanophase zirconia stabilized by yttria

Physica B: Condensed Matter, 1995
Abstract The local structure of Zr4+ in Y2O3-stabilized nanophase zirconia (14 nm) was studied using EXAFS under different sintering temperatures and compacting pressures. An unusual induction of the amplitude of FT(k3χ) of the second ZrM (M = Zr, Y) shell is observed after further consolidation, indicating there are some distorted metal atoms that ...
H. Deng, H. Qiu, G. Shi
openaire   +1 more source