Results 241 to 250 of about 3,531,769 (312)

Air oxidation of yttrium and some yttrium-base alloys

Journal of the Less Common Metals, 1964
Abstract An investigation was made of the air oxidation behavior of yttrium metal of 99.9% purity at temperatures between 500° and 1400°C. An oxide layer formed on the metal surface affords excellent protection against oxidation up to about 875°C but this film breaks down at higher temperatures, resulting in complete failure of the specimen within a ...
J.A. Haefling, F.A. Schmidt, O.N. Carlson   +2 more
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Compressive Properties of Yttrium Oxide

Journal of the American Ceramic Society, 1996
Compressive properties of polycrystalline yttrium oxide (Y 2 O 3 ) were studied by slow‐strain‐rate experiments (ε= 5.7 × 10 –6 s −1 ) between room temperature and 1600°C ...
Özer Ünal, Mufit Akinc
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Electrochemical deposition of yttrium oxide

Journal of Materials Chemistry, 2000
Thin films of yttrium hydroxide were obtained from aqueous Y(NO3)3 and YCl3 salt solutions via cathodic electrodeposition. The electrodeposition yield was studied under various experimental conditions. By varying the current density, deposition time and yttrium salt concentration, the amount of the deposited material could be controlled ...
Igor Zhitomirsky, Anthony Petric
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Sintering zirconia with yttrium oxide

Refractories, 1975
An investigation was carried out of the sintering of zirconia containing 4–15 mole % yttrium oxide in which it was confirmed that the sintering of the materials begins at 500°C.
A. G. Karaulov, I. N. Rudyak
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A new method for preparing 9Cr-ODS steel using elemental yttrium and Fe2O3 oxygen carrier

Journal of Alloys and Compounds, 2019
Casting oxide dispersion strengthened (ODS) steel is difficult due to the coarsening and agglomeration of oxide particles during melting and solidification.
Zhiyuan Hong, Xiaoxin Zhang, Q. Yan, Yingxue Chen   +3 more
semanticscholar   +1 more source

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
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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
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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
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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
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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
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