Results 41 to 50 of about 3,293 (219)
Charge-trapping characteristics of niobium-doped La2O3 for nonvolatile memory applications [PDF]
, 2013 published_or_final_versio
Huang, X, Lai, PT, Leung, CH, Shi, RP
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Development of a microwave absorbing material based on molybdenum-doped niobium pentoxide
CerâmicaThis work aimed to perform the characterization of electrical properties of niobium pentoxide, Nb2O5, pure and doped with molybdenum, prepared by powder metallurgy route and to do a comparative analysis of the influence of this material when sintered in ...
D. P. Gurgel +5 more
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Mechanochemical Synthesis of Niobium Pentoxide Nanoparticles
MATERIALS TRANSACTIONS, 2001 Acicular α-FeOOH particles are formed through aging of ferric oxyhydroxide colloidal solution formed by the neutralization of FeCl 3 aqueous solution by NaOH. The effect of foreign ion addition to the colloidal solution on the formation and morphology of α-FeOOH particles has been investigated.
Takuya Tsuzuki, Paul G. McCormick
openaire +2 more sources
Mechanochemical Synthesis of Lithium-Niobate-Doped Copper Oxide
KONA Powder and Particle Journal, 2013 It is demonstrated by means of XRD, IR spectroscopy, electron microscopy, laser light scattering and measurements of the specific surface area that mechanical activation of a mixture of lithium carbonate, niobium pentoxide and copper oxide in the ...
Aleksey Alekseevich Gusev +2 more
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Investigative properties of CeO2 doped with niobium: A combined characterization and DFT studies
Nanotechnology Reviews, 2021 Catalytic capacity of ceria mainly stems from a facile switch in the Ce oxidation states from +4 to +4 − x. While various experimental and computational studies pinpoint the reduction chemistry of Ce atom through the creation of oxygen vacancies, the ...
Shittu Toyin, Altarawneh Mohammednoor
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Техніка та технологія дезінтеграції й гравітаційного збагачення рідкіснометалічних руд [PDF]
, 2017 On the base of the analysis of centrifugal concentrators designs there has been justified the selection of apparatus for the rare-metal ores beneficiation.
Biletskyi, V. S. +3 more
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The Canadian Journal of Chemical Engineering, EarlyView.Graphical abstract illustrating the niobic acid precipitation process applied and the product obtained. Abstract This study investigates the precipitation of niobic acid (Nb2O5.nH2O) from potassium niobate solution with addition of sulphuric acid, and its subsequent thermal conversion into niobium oxide (Nb2O5). Thermodynamic modelling with PHREEQC and
Cássia R. Souza +4 more
wiley +1 more source
Temperature effects on material characteristics [PDF]
, 1960 Some of the physical properties of the main elements of interest in high temperature technology are reviewed. Some general trends emerge when these properties are viewed as a function of melting point, but there are a few notable exceptions. Titanium,
Kennedy, A. J., Murphy, A. J.
core
Electric-Field Noise above a Thin Dielectric Layer on Metal Electrodes [PDF]
, 2015 The electric-field noise above a layered structure composed of a planar metal electrode covered by a thin dielectric is evaluated and it is found that the dielectric film considerably increases the noise level, in proportion to its thickness. Importantly,
Blatt, Rainer +4 more
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The Canadian Journal of Chemical Engineering, EarlyView.Schematic of the CO adsorption process in a fixed‐bed column containing pure NaY zeolite and Nb‐modified NaY (NaY–5%Nb). On the left, breakthrough curves and temperature profiles highlight the dynamic performance and thermal effects during CO adsorption.
Elson Oliveira +3 more
wiley +1 more source