Results 271 to 280 of about 47,011 (318)

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
openaire   +2 more sources

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.
V. Ya. Shevchenko, N. A. Mikhailina, A. D. Izotov, Lazarev Vladislav B, L. I. Podzorova, A. A. Il’icheva   +5 more
openaire   +2 more sources

EXAFS Study of Yttria‐Stabilized Zirconia

Journal of the American Ceramic Society, 1986
The local structural environments of Y3+ and Zr4+ in 18 wt% Y2O3‐stabilized zirconia were studied using extended X‐ray absorption fine structure spectroscopy over the temperature range –120° to 770°C. The measured cation‐oxygen distances reflect those of the parent oxides, with the mean Zr‐O distance 0.017 nm shorter than the mean Y‐O distance.
L. M. Moroney, Alan V. Chadwick, G. N. Greaves, C. R. A. Catlow   +3 more
openaire   +2 more sources

Interaction of NiO with yttria-stabilized zirconia

Solid State Ionics, 1997
Abstract As-prepared and heat treated plasma-produced 8 and 10 mol% yttria-stabilized zirconia (YSZ) powders doped with 0, 5, 10 and 75 mol% NiO have been investigated by XRD. The as-prepared powders are mixtures of metastable tetragonal and cubic phases but they transform to a single YSZ phase upon heat treatment above 1200 °C. The solubility of NiO
Søren Linderoth, A. Kuzjukevics
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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   +2 more sources

ChemInform Abstract: Subeutectoid Degradation of Yttria‐Stabilized Tetragonal Zirconia Polycrystal and Ceria‐Doped Yttria‐Stabilized Tetragonal Zirconia Polycrystal Ceramics. [PDF]

ChemInform, 1991
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
José Luis García Fierro, María Teresa Esquivel Hernández, José R. Jurado, Pedro Durán   +3 more
openaire   +2 more sources

Layer characteristics in strength-gradient multilayered yttria-stabilized zirconia.

Dental Materials, 2023
M. Inokoshi, Hengyi Liu, K. Yoshihara, Mao Yamamoto, Watcharapong Tonprasong, Y. Benino, S. Minakuchi, J. Vleugels, B. Van Meerbeek, Fei Zhang   +9 more
semanticscholar   +1 more source

Phase diagram for a nano-yttria-stabilized zirconia system

, 2016
Due to the attractive properties of nanoparticles because of their effective surface area, they have been studied widely. Nano-yttria-stabilized zirconia (n-YSZ) is a ceramic which has been scrutinized extensively in past years.
Mohammad Asadikiya, H. Sabarou, Ming Chen, Y. Zhong   +3 more
semanticscholar   +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.
W.L. Roth, E. Canova, Alan I. Goldman, Y. H. Kao, R. Wong   +4 more
openaire   +2 more sources

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.
Yuichi Ikuhara, Kazutaka Sasaki, Taketo Sakuma   +2 more
openaire   +2 more sources