Results 251 to 260 of about 3,531,769 (312)

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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Cerium and yttrium oxide nanoparticles are neuroprotective

Biochemical and Biophysical Research Communications, 2006
The responses of cells exposed to nanoparticles have been studied with regard to toxicity, but very little attention has been paid to the possibility that some types of particles can protect cells from various forms of lethal stress. It is shown here that nanoparticles composed of cerium oxide or yttrium oxide protect nerve cells from oxidative stress ...
David, Schubert, Richard, Dargusch, Joan, Raitano, Siu-Wai, Chan   +3 more
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Oxidative methane activation over yttrium stabilised zirconia

Chemical Communications, 2015
Mechanism of C–H bond cleavage, involving electron transfer to adsorbed oxygen on YSZ by electronic structure calculations.
C S, Cooper, R J, Oldman, C R A, Catlow
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Thermochromic Behavior of Yttrium-Substituted Bismuth Oxides

ACS Applied Materials & Interfaces, 2019
High-temperature thermochromic materials are poorly explored in fundamental research, let alone applied research, although these materials may be used as low-cost, intuitively usable sensing materials in an industrial environment. Yet, only few of these materials have been described systematically.
Xi Liu, Anne Staubitz, Thorsten M. Gesing   +2 more
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Synthesis of europium-doped yttrium hydroxide and yttrium oxide nanosheets

Journal of Materials Science, 2007
A new approach has been developed for the preparation of Y(OH)3:Eu and Y2O3:Eu nanosheets using the sol–gel method and hydrothermal reactions. XRD patterns showed that the product was purely hexagonal-phase Y(OH)3. TEM images revealed that the nanosheets are square shaped (1 × 1 μm2) with a thickness of several tens of nanometers.
Atsuya Towata, Manickam Sivakumar, Kyuichi Yasui, Toru Tuziuti, Teruyuki Kozuka, Yasuo Iida   +5 more
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Preparation of Layered Yttrium Oxide by Hydrolysis of Yttrium Nitrate

Materials Science Forum, 2016
Hydrolysis products of aqueous yttrium nitrates obtained by sol-gel method at room temperature, under atmospheric pressure without any templates and structure directing agents were investigated by thermal analysis combined with mass spectrometry of thermolysis products, XRD and scanning electron microscope with elemental EDS analyzer.
V.V. Avdin, E.P. Yudina, I.V. Krivtsov
openaire   +1 more source

Properties of Yttrium Oxide Ceramics

Journal of the American Ceramic Society, 1957
The cubic structure of yttrium oxide is stable to 1800°C. in air as indicated by petrographic, X‐ray, and differential thermal analyses. A change in lattice parameter of less than ±0.007 a.u. was observed on heating the oxide to 1800°C. The mean specific heat of Y 2 O 3
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Mesoporous Gallium Oxide Structurally Stabilized by Yttrium Oxide

Langmuir, 2000
Since the synthesis of mesoporous silicas such as MCM-41 and FSM-16 with large internal surface areas and uniform pore sizes, the surfactant templating method has been used to synthesize mesoporous metal oxides, including titanium, aluminum, niobium, and tantalum oxides.
Mitsunori Yada, Masahumi Ohya, Masato Machida, Tsuyoshi Kijima   +3 more
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H2 oxidation on doped yttrium chromites/yttrium stabilized zirconia anode of solid oxide fuel cell

Journal of Power Sources, 2013
Abstract Co and Ni doped yttrium chromites as potential anodes for solid oxide fuel cell (SOFC) are studied with respect to the electrode performance and anode reaction mechanisms. Both electrical conductivity and electrode performance of yttrium chromites have been enhanced after Co and Ni doping. Electrochemical impedance spectroscopy (EIS) results
Wenyuan Li, Mingyang Gong, Xingbo Liu
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Investigating transformation kinetics of yttrium hydroxide to yttrium oxide

Materials Chemistry and Physics, 2022
Ruby Priya, Shagun Kainth, Dinesh Kumar, Piyush Sharma, P.K. Diwan, O.P. Pandey   +5 more
openaire   +1 more source