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Heating of Particles with an Aluminum Core and a Hydroxide Shell
Pleiades Publishing Ltd - Tập 59 - Trang 57-67 - 2023
N. S. Shaitura, V. V. Artemov, M. N. Larichev
Particles with an aluminum core and a hydroxide shell obtained by low-temperature (up to 100°C) oxidation of spherical aluminum micron particles with water are studied. Processes occurring upon heating these particles up to 750°C in a controlled gaseous atmosphere are analyzed. The composition and amount of released gas-phase products are studied, and their nature is determined. The transformation...... hiện toàn bộ
Preparation of PCLF/Si–Mg–FA Nanocomposite Coating on Ti-based Alloy: Synthesis, Corrosion behavior and Cytocompatibility
Pleiades Publishing Ltd - Tập 59 - Trang 191-198 - 2023
Nasibollah Hatami, Tahmineh Ahmadi, Majid Taghian Dehaghani, Hamid Reza Bakhsheshi-Rad, Filippo Berto
In the present study, polycaprolactone fumarate (PCLF) and polycaprolactone fumarate/silicon and magnesium codoped fluorapatite nanoparticles (PCLF/Si–Mg–FA nanocomposite) were deposited on the surface of Ti–6Al–4V alloy via dip-coating technique. The adhesion test, scanning electron microscopy (SEM) equipped with energy dispersive spectrometer (EDS), X-ray diffraction (XRD) technique, Fourier tra...... hiện toàn bộ
A Study of the Corrosion Resistance of Pump–Compressor Pipes with a Diffusion Zinc Coating under the Complicated Conditions of Gas-Producing Wells
Pleiades Publishing Ltd - Tập 53 - Trang 1288-1294 - 2018
E. V. Proskurkin, D. A. Sukhomlin
The results of corrosion tests of diffusion zinc coatings under the complicated corrosion and erosion conditions of gas-production wells are presented. The slowdown of the anodic process of the solution of a coating and its salt passivation in model solutions was shown by the electrochemical research. It was established that the corrosion rates of diffusion zinc-coated 36G2F steel samples were 4.1...... hiện toàn bộ
Regularities of formation of the structure of Al-containing nanocomposites upon interaction of ASD-6 powder with polymer suspension
Pleiades Publishing Ltd - Tập 49 - Trang 869-873 - 2013
N. M. Antonova, D. P. Babichev, V. Yu. Dorofeev
A new approach toward development of nanosize materials based on water-soluble polymers is suggested. Nanosize aluminum-containing structures screened by a polymer sodium carboxymethyl cellulose shell are obtained at temperatures of 70–80°C by introducing Al microparticles with a size of up to 10 μm into an aqueous solution of sodium carboxymethyl cellulose. The methods of XRD and IR spectroscopy ...... hiện toàn bộ
Influence of surface in the course of mass spectrometry studies of pentoxifylline in the course of laser desorption ionization
Pleiades Publishing Ltd - Tập 47 - Trang 767-772 - 2011
K. R. Chamyan, S. A. Paramonov, I. A. Revel’skii, A. K. Buryak
The influence of the essence of surface on mass spectrometry behavior of the medication, i.e., pentoxifylline, in the course of surface-enhanced laser desorption/ionization. For surfaces, we used a standard stainless-steel target for mass-spectrometric analysis using matrix-assisted laser desorption/ionization, AnchorChip, and the surfaces of pentoxifylline tablets. The influence of adding α-cyano...... hiện toàn bộ
Elevated Temperature Wear Behavior of FeCr Slag Coating as an Alternative Coating Material for Caster Rolls
Pleiades Publishing Ltd - Tập 58 - Trang 119-128 - 2022
Yılmaz Küçük, Mecit Öge
The aim of this study is to show that ferrochrome (FeCr) slag, an industrial waste material, can be used as an alternative protective coating material in service conditions for the caster roll surfaces used in the continuous casting line of steelmaking. Atmospheric plasma spray (APS) method was utilized in coating processes. Considering the working conditions of continuous casting production line,...... hiện toàn bộ
The effect of diffusion processes on surface smoothing upon chemical polishing of titanium
Pleiades Publishing Ltd - Tập 52 - Trang 947-953 - 2016
E. V. Dogadkina, M. G. Dontsov, V. I. Parfenyuk
The influence of diffusion currents on surface smoothing is investigated upon chemical polishing of titanium. The dependence between the oxidizer and activator maintenance in a solution of chemical polishing, value diffusion currents, and efficiency of surface smoothing is revealed. It is shown that the increasing temperature of the solution increases the efficiency of surface smoothing.
Biocidal and Corrosion Properties of Composite Electrochemical Coatings Based on Tin–Nickel Alloy
Pleiades Publishing Ltd - Tập 59 - Trang 305-311 - 2023
A. V. Pyanko, O. A. Alisienok, A. V. Pospelov, E. F. Chernyavskaya, A. A. Chernik
Composite electrochemical coatings based on a tin–nickel alloy with a composite of the “SiO2 core–TiO2 shell” type have been obtained. Corrosion properties of coatings were studied in 3% sodium chloride solution. Biocidal properties of coatings with respect to Escherichia coli ATCC 8739 and Staphylococcus aureus ATCC 6538 strains were studied. It was found that, to impart biocidal properties to th...... hiện toàn bộ
Plasma-electrolytic oxidation of valve metals in Zr(IV)-containing electrolytes
Pleiades Publishing Ltd - Tập 46 - Trang 456-462 - 2010
V. S. Rudnev, T. P. Yarovaya, K. N. Kilin, I. V. Malyshev
The studies devoted to the production of Zr-containing coatings on valve metals (Ti, Al, and Mg) using plasma-electrolytic oxidation are reviewed. The coatings are formed from aqueous electrolyte suspensions containing dispersed ZrO2 particles, as well as Zr(IV) fluorocomplexes, polyphosphate, and tartrate complexes, and from Zr(SO4)2 electrolytes. The layers that contain both zirconium oxide in e...... hiện toàn bộ
Photorefractive properties of composites based on polyvinyl alcohol, single-wall carbon nanotubes, and fullerene
Pleiades Publishing Ltd - - 2016
A. D. Grishina, T. V. Krivenko, V. V. Savel’ev, A. V. Vannikov
Composites with photoelectrical, nonlinear optical, and photorefractive properties have been prepared. The composites consist of polyvinyl alcohol, single-wall carbon nanotubes, and fullerene C60. Addition of C60 with a long wavelength boundary near 630 nm resulted in an eight- to tenfold increase in both the quantum efficiency of generation of mobile hole charges and the photorefractive two beam ...... hiện toàn bộ
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