Results 211 to 220 of about 39,827 (264)

Nanostructured Yttrium Oxide Obtained by Hydrolysis of Yttrium Sulfate

Materials Science Forum, 2019
Modern functional metal oxide materials are based upon the use of nanostructured particles. In recent years materials on the basis of yttrium oxide find ever-widening application. The properties of yttrium oxide depend heavily on precursors and synthesis conditions. One of the poorly investigated precursors is yttrium sulfate.
Viacheslav V. Avdin, Valeria V. Trunova, Aleksandra V. Bulanova   +2 more
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Anion exchange separation and determination of yttrium in uranium oxide — Yttrium oxide mixture

Journal of Radioanalytical Chemistry, 1983
A procedure has been developed for quantitative separation of yttrium from uranium by anion exchange from nearly saturated NH4Cl solution in 0–2N HCl medium. Apparently no organic matter is leached out during the separation as yttrium could be determined by EDTA titration without resorting to fuming with perchloric acid before titration.
G. H. Rizvi, N. K. Chaudhuri, R. K. Rastogi, S. K. Patil   +3 more
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Self-diffusion of yttrium in monocrystalline yttrium oxide: Y2O3

Journal of Solid State Chemistry, 1980
Abstract Yttrium self-diffusion in monocrystalline yttrium oxide (Y2O3) is studied by means of the classical radio tracer technique. The few reliable diffusion data obtained in the temperature range 1600–1700°C lead to the following diffusion coefficient D=3.5×10 −9 exp − 72 RT ( kcal/mole ) m 2 sec −1 ...
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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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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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Sputter deposition of yttrium–oxides

Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, 1993
The yttrium–oxide phase diagram contains only one equilibrium compound, a Y2O3 cubic structure. The process of reactive sputter deposition is used to synthesize previously unreported, yttrium-rich oxide compounds. A planar magnetron is operated in the direct–current mode using a working gas mixture of argon–20% oxygen.
A. F. Jankowski, L. R. Schrawyer, J. P. Hayes   +2 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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