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Microwave assisted synthesis of monodispersed Y2O3 and Y2O3:Eu3+ particles
Ceramics International, 2015Abstract Monodisperse spherical Y 2 O 3 and Y 2 O 3 :Eu 3+ nanocrystalline particles with particle size between 100 nm and 350 nm were successfully prepared by microwave assisted urea precipitation method followed by a thermochemical treatment. Fast microwave heating, controlled decomposition of urea and burst nucleation of metal ions in aqueous ...
Adrine Malek Khachatourian +4 more
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Synthesis and characterization of rod-like Y2O3 and Y2O3:Eu3+
Journal of Materials Science, 2003Y2O3 rods 100 to 200 nm in diameter and 10 to 20 μm in length are accessible via polyol-mediated synthesis of a precursor material with similar shape. By heating of Y(CH3COO)3 · xH2O and a defined amount of water at 190°C in diethylene glycol, the rod-like precursor material is formed. Infrared spectroscopy (IR), differential thermal analysis (DTA) and
C. Feldmann, J. Merikhi
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High-pressure induced phase transitions of Y2O3 and Y2O3:Eu3+
Applied Physics Letters, 2009We investigated high-pressure induced phase transitions in Y2O3 and Eu-doped Y2O3 (Y2O:Eu3+) using angular dispersive synchrotron x-ray diffraction, Raman spectroscopy, and photoluminescence (PL). With increasing pressure, we observed a series of phase transformations in Y2O3:Eu3+, which followed a structure sequence of cubic→monoclinic→hexagonal ...
Lin Wang +8 more
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, 2020
WC-6Co cemented carbide is obtained via Spark Plasma Sintering (SPS) using ammonium metatungstate, cobalt acetate and glucose as raw materials. The effects of additive type (Y2O3, Cu, Mo and Mo2C) on the microstructure and anti-corrosion ability of WC ...
Shengda Guo +8 more
semanticscholar +1 more source
WC-6Co cemented carbide is obtained via Spark Plasma Sintering (SPS) using ammonium metatungstate, cobalt acetate and glucose as raw materials. The effects of additive type (Y2O3, Cu, Mo and Mo2C) on the microstructure and anti-corrosion ability of WC ...
Shengda Guo +8 more
semanticscholar +1 more source
Journal of Alloys and Compounds, 2021
Abstract The Y2O3: Tm/Yb, Y2O3: Tm/Yb@Y2O3: Yb and Y2O3: Tm/Yb@Y2O3: Yb@Y2O3: Er/Yb thin films are successfully prepared via spin-coating method. The surface grain size of the thin films is changed by multiple calcinations. The up-conversion luminescence emission of the thin films under 980 nm excitation is improved through two methods, including the
Qi Han +4 more
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Abstract The Y2O3: Tm/Yb, Y2O3: Tm/Yb@Y2O3: Yb and Y2O3: Tm/Yb@Y2O3: Yb@Y2O3: Er/Yb thin films are successfully prepared via spin-coating method. The surface grain size of the thin films is changed by multiple calcinations. The up-conversion luminescence emission of the thin films under 980 nm excitation is improved through two methods, including the
Qi Han +4 more
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, 2020
The present study reports the upconversion (UC) based color tuning in Y2O3:Ho3+/Yb3+, Y2O3:Tm3+/Yb3+ and Y2O3:Tm3+/Ho3+/Yb3+ phosphors synthesized through complex based precursor solution method.
P. Tadge +6 more
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The present study reports the upconversion (UC) based color tuning in Y2O3:Ho3+/Yb3+, Y2O3:Tm3+/Yb3+ and Y2O3:Tm3+/Ho3+/Yb3+ phosphors synthesized through complex based precursor solution method.
P. Tadge +6 more
semanticscholar +1 more source
Electrical properties of MgO + Y2O3 and CaO + Y2O3 partially-stabilized zirconias
Journal of Materials Science Letters, 1985Etude 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 +2 more
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High temperature oxidation resistance of Y2O3 modified ZrB2-SiC coating for carbon/carbon composites
Ceramics International, 2020To protect carbon/carbon (C/C) composites from oxidation at high temperature, Y2O3 modified ZrB2-SiC coating was fabricated on C/C composites by atmospheric plasma spraying.
Hanchun Ma +7 more
semanticscholar +1 more source
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. +3 more
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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. +3 more
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Features of ZrO2–Y2O3 System Nanopowders with a Different Y2O3 Content
Refractories and Industrial Ceramics, 2015Combination light scattering spectroscopy and infrared spectroscopy are used to study ZrO2 powder stabilized with 2, 3, 5, and 7 mol.% Y2O3. Changes in spectra are demonstrated connected with an increase in amount ofstabilizing addition. Differential thermal analysis establishes that variation of Y2O3 content affects the position of peaks for thermal ...
S. E. Porozova +3 more
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