Results 171 to 180 of about 3,301 (207)

Phase stability of scandia–yttria-stabilized zirconia TBCs

Surface and Coatings Technology, 1998
Abstract The evolution in phase composition resulting from 1400°C ageing of ZrO 2 samples stabilized by ∼4–7 mol.% each of Y 2 O 3 (YSZ), Sc 2 O 3 (ScSZ), or a mixture of Sc 2 O 3 –Y 2 O 3 (SYSZ) was studied by synchrotron radiation X-ray diffraction (SR XRD) using whole powder pattern fitting (WPPF), a recently proposed Rietveld-based method for
Leoni, Matteo, R. L. Jones, Scardi, Paolo   +2 more
openaire   +2 more sources

Thin-film yttria-stabilized tetragonal zirconia

Solid State Ionics, 1996
Abstract Yttria-stabilized zirconia thin films deposited by radio-frequency sputtering from a 3 mol% Y 2 O 3 ZrO 2 target show primarily tetragonal orientation. Annealing in air further reduces the fraction of monoclinic phase and enhances the crystallinity of the tetragonal phase.
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

Diffusion of niobium in yttria-stabilized zirconia and in titania-doped yttria-stabilized zirconia polycrystalline materials

Journal of the European Ceramic Society, 2006
Abstract Bulk and grain boundary diffusion of Nb5+ cations in yttria-stabilized zirconia (YSZ, 8 mol% Y2O3–92 mol% ZrO2) and in titania-doped yttria-stabilized zirconia (Ti–YSZ, 5 mol% TiO2–8 mol% Y2O3–87 mol% ZrO2) was studied in air in the temperature range from 900 to 1300 °C. Experiments were performed in the B-type kinetic region.
K. Kowalski, A. Bernasik, J. Camra, M. Radecka, J. Jedliński   +4 more
openaire   +1 more source

EXAFS Studies of Yttria Stabilized Zirconia

1984
Yttria stabilized zirconia is a well known solid electrolyte which exhibits fast anion conduction at elevated temperatures. Below 1200° C pure zirconia (ZrO2) is monoclinic, but forms a stabilized cubic phase with the fluorite structure in a solid solution with 9.4 to 24 mole percent Y2O3.
A. I. Goldman, E. Canova, Y. H. Kao, W. L. Roth, R. Wong   +4 more
openaire   +1 more source

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
openaire   +1 more source

Subeutectoid Degradation of Yttria‐Stabilized Tetragonal Zirconia Polycrystal and Ceria‐Doped Yttria‐Stabilized Tetragonal Zirconia Polycrystal Ceramics

Journal of the American Ceramic Society, 1991
Yttria‐doped tetragonal zirconia containing 2 and 3 mol% Y 2 O 3 (Y‐TZP), and CeO 2 ‐doped Y‐TZP containing 0 to 12 mol% CeO 2 were sintered at 1350°C in a tetragonal single‐
María T. Hernandez, José R. Jurado, Pedro Duran, José L. G. Fierro   +3 more
openaire   +1 more source

Solid state supercapacitor materials: 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
M. G. H. M. Hendriks, M. J. G. W. Heijman, W. E. van Zyl, J. E. ten Elshof, H. Verweij   +4 more
openaire   +1 more source

Nano Single Crystals of Yttria-Stabilized Zirconia

Crystal Growth & Design, 2009
A simple, low-cost hydrothermal method was developed to synthesize in one step single crystals of yttria-stabilized zirconia (YSZ) nanoparticles of ca. 5 nm. Subsequent dialysis and ultrasonic dispersion afford a very stable YSZ suspension in pure water.
Guiot, C., Grandjean, S., Lemonnier, S., Jolivet, Jean-Pierre, Batail, P.   +4 more
openaire   +1 more source

Low-energy excitations in yttria-stabilized zirconia

Physical Review B, 1984
Measurements of the specific heat, thermal conductivity, dielectric constant and thermal expansion of the single-crystal fast-ion conductor ${(\mathrm{Zr}{\mathrm{O}}_{2})}_{1\ensuremath{-}x}{({\mathrm{Y}}_{2}{\mathrm{O}}_{3})}_{x}$ with $x=0.10,0.16, \mathrm{and} 0.18$ exhibit behavior similar to that observed in amorphous solids and attributed to two-
F. J. Walker, A. C. Anderson
openaire   +1 more source