Results 241 to 250 of about 55,297 (275)

Paramagnetic defects in electron-irradiated yttria-stabilized zirconia: Effect of yttria content

Journal of Applied Physics, 2011
We have studied the effect of the yttria content on the paramagnetic centers in electron-irradiated yttria-stabilized zirconia (ZrO2: Y3+) or YSZ. Single crystals with 9.5 mol % or 18 mol % Y2O3 were irradiated with electrons of 1.0, 1.5, 2.0, and 2.5 MeV.
Jean-Marc Costantini, François Beuneu, Sarah Morrison-Smith, Ram Devanathan, William J. Weber   +4 more
openaire   +1 more source

Yttria Doped Si2N2O Ceramics

1992
Silicon oxynitride ceramics have been prepared from Si3N4 and SiO2 by pressureless sintering at 1600 and 1775°C and by hot isostatic pressing (HIP) at 1600, 1750 and 1900°C, with Y2O3 (0–10 wt%) as a sintering aid. Pressurelessly sintered samples were in general porous, whereas the HIPed samples were dense at all temperatures.
T. Ekström, M. Holmström, P.-O. Olsson
openaire   +1 more source

Yttria Hydroxy‐Salt Binders

Journal of the American Ceramic Society, 1978
Binder phase (primarily chloride or nitrate) formation was examined in YX 3 ‐NaOH‐H 2 O, Y 2 O 3 ‐acid‐H 2 O, and Y
openaire   +1 more source

X-ray photoelectron spectroscopic studies on yttria, zirconia, and yttria-stabilized zirconia

Journal of Applied Physics, 1991
Surfaces 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
openaire   +1 more source

Influence of yttria content on the preparation of nanocrystalline yttria-doped zirconia

Journal of Materials Research, 1995
Nanocrystalline zirconia doped with 0–10 mol % Y2O3 has been prepared by a combustion synthesis process, followed by a rapid densification process. The concentration of Y2O3 in the as-reacted zirconia appeared to have a significant influence on the reduction of the crystallite size, in the combustion temperature range studied (450 °C–550 °C), as well ...
Dai Huang, K.R. Venkatachari, Gregory C. Stangle   +2 more
openaire   +1 more source

Impedance spectroscopy analysis of percolation in (yttria-stabilized zirconia)-yttria ceramic composites

Solid State Ionics, 2004
Abstract (ZrO2:8 mol% Y2O3)+m mol% Y2O3 ceramic composites with nominal yttria concentration varying from 0 to70 mol% (0–82.9 vol.%) were prepared by evaporation of a suspension of ZrO2:8 mol% Y2O3 and Y2O3 in ethanol followed by pressing and sintering.
openaire   +1 more source

Phase relationships in the yttria-rich part of the yttria-zirconia system

Journal of Materials Science, 1977
Phase equilibria in yttria-zirconia mixtures containing not less than 50 mol % YO1.5 have been studied between 1200 and 2200° C. The solubility of zirconia in yttria is shown to decrease with increasing temperature: the miscibility gap between the zirconia (fluorite) and yttria (type C rare earth) solid solutions extends from 64 to 75 mol % YO1.5 at ...
openaire   +1 more source

yttria, n.

2023
openaire   +1 more source

Production of yttria ceramics by gelcasting

2011
The production of yttria ceramics by green-gelcasting technique was developed through: (1) optimization of aqueous yttria slurries; (2) optimization of the gelcasting process; (3) thermal treatments and characterization of the final microstructures. Different dispersants were tested. Zeta potential characterization of the dispersed state was performed.
Alex Sangiorgi, Anna Luisa Costa, Paola Pinasco, Alessandra Sanson, Barbara Ballarin   +4 more
openaire   +3 more sources

Electrolytic Behavior of Yttria

Journal of The Electrochemical Society, 1971
Jon Schieltz, John W. Patterson, D. R. Wilder   +2 more
openaire   +1 more source