Results 221 to 230 of about 13,383 (265)

Electrical properties of MgO + Y2O3 and CaO + Y2O3 partially-stabilized zirconias

Journal of Materials Science Letters, 1985
Etude de la microstructure et de la resistivite electrique de zircones partiellement stabilisees par MgO+Y 2 O 3 et par CaO+Y 2 O ...
R. K. Slotwinski, N. Bonanos, E. P. Butler   +2 more
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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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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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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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ОПРЕДЕЛЕНИЕ МИНИМАЛЬНОГО СОДЕРЖАНИЯ НАНОПОРОШКОВ (ZrO2-Y2O3) И Al2O3 В ПОРОШКОВЫХ КОМПОЗИЦИЯХ (ZrO2-Y2O3) - (ZrO2-Y2O3) И (ZrO2-Y2O3)-Al2O3

2023
The minimum permissible amount of a modifying nanostructured additive in powder compositions has been determined, which makes it possible to carry out the reaction of nitrate-organic synthesis and to provide further nanostructural hardening of ceramics.
Nesterova, I. A., Denisova, E. I., Kartashov, V. V., Нестерова, И. A.   +3 more
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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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Ion conducting glasses in the Na2OY2O3SiO2 and Li2OY2O3SiO2 systems

Solid State Ionics, 1986
Abstract We have synthesized alkali metal yttrium silicate glasses with compositions xM2O - yY2O3 - (100xy)SiO2, where M = LiorNa, x = 29 to 49 mole percent and y = 4 to 9 mole percent. The electrical conductivities at 300°C range from 1.5 × 10−4 to 3.4 × 10 −3 Ω −1 cm −1 .
M ALEXANDER, B RILEY
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Hydrothermal synthesis of Y2O3 coated Y2O3:Eu3+ nanotubes for enhanced photoluminescence properties

Materials Research Bulletin, 2015
Abstract Novel Y 2 O 3 coated Y 2 O 3 :Eu 3+ nanotubes with different coating ratios were synthesized successfully by a facile two-step process, including hydrothermal synthesis of Y(OH) 3 coated Y(OH) 3 :Eu 3+ as precursors and then calcination of them at 1000 °C for 2 h. X-ray diffraction patterns and field emission scanning electron microscope
Linhui Gao, Guangfa Wang, Hongliang Zhu, Weijie Zhou, Guofu Ou   +4 more
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