Results 201 to 210 of about 914,133 (243)

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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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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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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Kinetics of electrochemical oxidation of yttrium

Russian Journal of Electrochemistry, 2000
The anodic generation of yttrium oxide is investigated. The determined kinetic parameters correspond to those of the electrochemical oxidation of metals involving the formation of dielectric layers. Kinetic features of the formation of two yttrium oxides are described.
V. P. Malinenko, E. Yu. Glazko, G. B. Stefanovich   +2 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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Transparent yttrium oxide ceramics

Materials Research Bulletin, 1967
Abstract Transparent discs of yttrium oxide, one centimeter in diameter by several millimeters thick, have been produced by hot forging under vacuum at 950°C and 10,000–12,000 psi for 48 hours. Lithium fluoride, required to produce full transparency, is eliminated during the sintering process.
R.A. Lefever, John Matsko
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The Gel Route to Yttrium Oxide

MRS Proceedings, 1988
ABSTRACTSynthesis of pure Y2O3 Powders have been performed through the sol-gel process. Stable colloids in the range of 500 Å to 2000 Å have been obtained by hydroxylation of yttrium-aquo ions performed through an anion exchange resin.The chemical nature of these sols and gels investigated by GTA, DTA and EXAFS is in close agreement with Y(OH)3nH2O ...
F. Ribot, C. Sanchez, J. Livage
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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
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