Results 241 to 250 of about 3,110,730 (312)

Hot-cast yttrium oxide ceramics

Refractories, 1976
The principal characteristics and parameters were determined for the production of ceramics from yttrium oxide by hot pressure-casting. The products sinter to a relative density of 97–99.5%. High-sintered yttrium oxide ceramic produced by hot pressure-casting remains stable during long-term (500 h) exposure to a high temperature (1600°C).
D. N. Poluboyarinov, E. S. Lukin, �. E. Nedel'ko, A. E. Kozlova, V. G. Avetikov   +4 more
openaire   +1 more source

Yttrium Oxide Wetting Angle Examination

Materials Science Forum, 2016
The current paper presents yttrium oxide wetting angle examination. The test was performed in accordance with two different methods: contact and noncontact heating. Upon completion of the test, microstructural and spectral analysis of substrate/metal contact areas was conducted. Test findings are listed in the Conclusions.
A.N. Anikeev, I.V. Chumanov, V.I. Chumanov   +2 more
openaire   +1 more source

Infrared Properties of Yttrium Oxide

Journal of the Physical Society of Japan, 1971
By using a large solar furnace, yttrium oxide crystals were made by a fusion process, and their reflectivity was measured in the spectral region 700 to 10 cm -1 , Several reststrahlen bands extending from 600 to 240 cm -1 were found. From the reflectivity curve, the parameters of seven lattice vibrations were analysed, and the optical constants in a ...
Yutaka Nigara, Mareo Ishigame, Takemaro Sakurai   +2 more
openaire   +1 more source

Temperature dependent current transport mechanism in osmium-doped perovskite yttrium manganite-based heterojunctions

Journal of Applied Physics, 2019
Among the multiferroics, yttrium manganite YMnO3 (YMO) is one of the most frequently studied magnetic ferroelectric oxides and has attracted a great deal of concern, thanks to its potential magnetoelectric features.
F. Coşkun, O. Polat, M. Coşkun, A. Turut, M. Caglar, Z. Durmus, H. Efeoǧlu   +6 more
semanticscholar   +1 more source

Spectra of europium-doped yttrium oxide and yttrium vanadate phosphors

Czechoslovak Journal of Physics, 1978
The spectral distributions of the visible absorption and fluorescence emission under electron beam excitation of Eu3+-doped (Y2O3) and (YVO4) powders have been detected and analyzed. (Y2O3: Eu3+) has a cubicC crystal structure with a unit cell dimension a=10·61 A.
M. S. Elmanharawy, A. H. Eid, A. Abdel Kader   +2 more
openaire   +1 more source

Cathodoluminescence of yttrium oxide and yttrium and zinc silicate films

Journal of Applied Spectroscopy, 2011
We have studied the cathodoluminescent properties of Y2SiO5:Ce, Zn2SiO4:Ti, Zn2SiO4:Mn, Y2O3:Eu thin films obtained by high-frequency magnetron sputtering. Based on measurements of the luminescence spectra, we have shown that the films can be used as luminophores with blue emission (Y2SiO5:Ce, Zn2SiO4:Ti), green emission (Zn2SiO4:Mn), and red emission (
O. M. Bordun, E. V. Dovga, I. I. Kukharskii   +2 more
openaire   +1 more source

Oxidation of Zirconium-Yttrium Alloys

Advances in X-ray Analysis, 1964
AbstractThe phase and elemental distributions on zirconium alloys containing 5, 10, 25, 35, and 50 at.%. yttrium, oxidized in dry air at 1200 and 1600°C, have been studied by X-ray diffraction, fluorescence, and electron-microprobe techniques. Zirconium-yttrium alloys, which are entirely solid at 1200°C, and zirconium 5 and 25 at.% yttrium alloys ...
D. I. Phalen, D. A. Vaughan, N. A. Richard   +2 more
openaire   +1 more source

Cerium and yttrium oxide nanoparticles are neuroprotective

Biochemical and Biophysical Research Communications, 2006
The responses of cells exposed to nanoparticles have been studied with regard to toxicity, but very little attention has been paid to the possibility that some types of particles can protect cells from various forms of lethal stress. It is shown here that nanoparticles composed of cerium oxide or yttrium oxide protect nerve cells from oxidative stress ...
David, Schubert, Richard, Dargusch, Joan, Raitano, Siu-Wai, Chan   +3 more
openaire   +2 more sources

Oxidative methane activation over yttrium stabilised zirconia

Chemical Communications, 2015
Mechanism of C–H bond cleavage, involving electron transfer to adsorbed oxygen on YSZ by electronic structure calculations.
C S, Cooper, R J, Oldman, C R A, Catlow
openaire   +2 more sources

Multilayer structure of Al-Si alloy after electro-explosion alloying with yttrium oxide powder

Materials Research Express, 2018
Electro-explosion alloying of a eutectic Al-Si alloy (silumin) with yttrium oxide powder is carried out to form a coating on the material surface with advanced characteristics.
S. Konovalov, V. Gromov, Y. Ivanov
semanticscholar   +1 more source