Results 241 to 250 of about 27,995 (285)

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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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
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EXAFS Study of Yttria‐Stabilized Zirconia

Journal of the American Ceramic Society, 1986
The local structural environments of Y 3+ and Zr 4+ in 18 wt% Y 2 O 3 ‐stabilized zirconia were studied using extended X‐ray absorption fine structure spectroscopy over the ...
C. R. A. CATLOW, A. V. CHADWICK, G. N. GREAVES, L. M. MORONEY   +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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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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Yttria stabilized zirconia reinforced hydroxyapatite coatings

Surface and Coatings Technology, 2000
The low bonding strength between the coating layer and the substrate of plasma sprayed hydroxyapatite (HA) coatings is the weakness in its application as a bio-medical prosthesis. In this study, 30 wt.% of yttria (8 wt.%) stabilized zirconia (YSZ) has been used to reinforce the hydroxyapatite coatings and to improve the bond strength of the HA coatings.
Lei Fu, Khiam Aik Khor, Joo Peng Lim
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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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Yttria Stabilized Zirconia Hollow Fiber Membranes

Journal of the American Ceramic Society, 2006
Yttria‐stabilized zirconia (YSZ) hollow fiber membranes have been developed by a combined phase inversion and sintering method. An organic binder solution (dope) containing suspended YSZ particles is spun to form a hollow fiber precursor, which is then sintered at elevated temperatures.
Lihong Liu, Xiaoyao Tan, Shaomin Liu
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Nanoindentation examination of yttria-stabilized zirconia (YSZ) crystal

Journal of Alloys and Compounds, 2007
Abstract The paper clarifies the specific mechanical properties of single crystal YSZ through applying the nanoindentation examination and the finite element analysis with theoretical ultrasonic measurements. The obtained results demonstrate that the lack of precise determination of the Poisson's ratio results in the significant discrepancy between ...
Masaki Fujikane, Daigo Setoyama, Shijo Nagao, Roman Nowak, Shinsuke Yamanaka   +4 more
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