Results 211 to 220 of about 15,962 (251)

Oxygen Self-Diffusion in Y2O3 and Y2O3-ZrO2 Solid Solution

1985
Yttrium oxide (Y2O3) C-type cubic rare-earth-oxide crystal structure. This structure is described as a modified fluorite-type cubic structure where one fourth of the anion sites are vacant and regularly arranged. Some studies concerning the point defect disorder (Tallan and Vest, 1966; Odier et al., 1971; Rifflet et al., 1975) and self-diffusion ...
Ken Ando, Yasumichi Oishi
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Synthesis and luminescence of spherical Y2O3:Eu3+ and Y2O3:Eu3+/Bi3+ particles

Journal of Materials Science: Materials in Electronics, 2016
Y2O3:Eu3+ and Y2O3:Eu3+/Bi3+ particles with spherical morphology are synthesized by microwave-assistant hydrothermal process. The results show that cubic phase Y2O3:Eu3+ and Y2O3:Eu3+/Bi3+ particles with uniform size and spherical shape are obtained. The doping Eu3+ and Bi3+ ion have no influence on the phase and morphology of samples.
Yeqiu Wu, Guangya Jin, Zhijian Liu, Tao He   +3 more
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Phase relations in the systems ZrO2Y2O3Nd2O3 and ZrO2Y2O3CeO2

Materials Research Bulletin, 1986
Abstract The phase relations of ZrO 2 Y 2 O 3 Nd 2 O 3 and ZrO 2 Y 2 O 3 CeO 2 systems have been studied at 1100–1600°C. The single region of the fluorite phase was intensively examined using the relation between lattice parameter and composition.
Yukio Hinatsu, Tadasumi Muromura
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Photo- and radiation-induced preparation of Y2O3 and Y2O3:Ce(Eu) nanocrystals

Journal of Nanoparticle Research, 2012
A convenient method for preparation of pure and doped yttrium oxide was developed, which is based on irradiation of solutions containing yttrium nitrate and ammonium formate with UV light or accelerated electrons. Solid phase formed under irradiation was consequently calcined at 500 °C or higher temperatures to obtain nanocrystalline yttrium oxide ...
Václav Čuba, Tereza Pavelková, Jan Bárta, Vítězslav Jarý, Martin Nikl, Ivo Jakubec   +5 more
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Synthesis and characterization of Y2O3-ZrO2 and Y2O3-CeO2-ZrO2 precursor powders

Journal of the European Ceramic Society, 1996
Abstract Thixotropic gels of the precursor powders of the titled compounds have been prepared by the addition of oxalic acid to the mixed solutions of metal salts at room temperature (≈ 27 °C). The clear sols of yttrium-zirconyl oxalate (YZO) and yttrium-cerium-zirconyl oxalate (YCZO) gelled within a few hours and were oven-dried at 40 °C.
T. Settu, R. Gobinathan
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Preparation and conductivity of Yb2O3–Y2O3 and Gd2O3–Y2O3 co-doped zirconia ceramics

Solid State Ionics, 2008
Abstract A suspension stabilizer-coating technique was employed to prepare x mol% Yb2O3 or Gd2O3 (x = 1.0, 2.0, 3.0 and 4.0) co-stabilized 1.0 or 2.0 mol% Y2O3 doped ZrO2 nanopowders (xYb1Y, xYb2Y, xGd1Y). Fully dense Yb2O3/Gd2O3 and Y2O3 co-doped ZrO2 ceramics were obtained by means of pressureless sintering in air at 1450 °C.
Yanmei Kan, Songli Li, Peiling Wang, Guo-Jun Zhang, Omer Van der Biest, Jef Vleugels   +5 more
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Phase Relations along the Y2O3–CuWO4Join in the Y2O3–WO3–CuO System

Inorganic Materials, 2001
The phase relations in the Y2O3–WO3–CuO system were studied by x-ray diffraction and thermal analysis. The results were used to construct the 800°C section of the phase diagram. Based on the new and earlier data on the liquidus relations, the section through the Y2O3–WO3–CuO phase diagram along the Y2O3–CuWO4join was mapped out.
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The ZrO2 (+Y2O3) - Yvo4 Interface: Destabilization of Cubic ZrO2 (+Y2O3) in the Presence of V2O5

MRS Proceedings, 1988
The destabilization of zirconia thermal barriers has been monitored by directly exposing thin films of ZrO2 (+Y2O3) to V2O5 vapor. The growth of YVO4 and the transformation of cubic ZrO2 (+Y2O3) into tetragonal and/or monoclinic ZrO2 polymorphs are monitored by selected-area diffraction and energy-dispersive x-ray spectroscopy in the transmission ...
D.W. Susnitzky, C.B. Carter, W. Hertl
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The influence of activation of Y2O3 polycrystalline matrices by Bi3+ ions on the luminescence of Y2O3:Eu3+

Inorganic Materials, 2009
The influence of activation of the Y2O3 matrix of the Y2O3:Eu3+ phosphor by Bi3+ ions on the luminescence of Eu3+ and Bi3+ ions in it and on conditions of the excitation energy transfer to luminescence centers is studied. It is shown that the presence of Bi3+ ions leads to the appearance of recombination luminescence with participation of bismuth ions ...
A. V. Strel’tsov, V. P. Dmitrienko, T. A. Akmaeva, S. V. Kudryavtsev, A. O. Dmitrienko, K. A. Razumov   +5 more
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Combustion synthesis of Y2O3 and Yb–Y2O3

Journal of Materials Processing Technology, 2008
R.V. Mangalaraja, J. Mouzon, P. Hedström, I. Kero, K.V.S. Ramam, Carlos P. Camurri, M. Odén   +6 more
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