Search Results - "Koval, O. Yu"

Influence of the Deposition Temperature on the Structure of Thin Molybdenum Disulfide Films Formed by Chemical Vapor Deposition by Khattab, Y., Aleksandrov, S. E., Fedorov, V. V., Koval’, O. Yu

“…Molybdenum disulfide films were formed by chemical vapor deposition in the Mo(CO) 6 –H 2 S systems in the temperature interval 250–850°С at the reactor…”
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Alloys of the Ti-Si-Sn system (titanium corner): phase equilibria, structure, and mechanical properties by Gorna, I. D., Bulanova, M. V., Valuiska, K. O., Bega, M. D., Koval’, O. Yu, Kotko, A. V., Evich, Ya. I., Firstov, S. O.

“…The joint effect of Si (5, 7, and 10 at.%) and Sn (3–15 at.%) on the structure and mechanical properties of Ti-rich as-cast Ti-Si-Sn alloys is studied…”
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Influence of Thermomechanical and Heat Treatments on the Structure and Mechanical Properties of Biocompatible Ti–(18–20)Nb–(3–4)Zr–(1–1.2)Si Alloys by Shevchenko, О. М., Kuzmenkо, M. M., Koval, O. Yu, Kotko, A. V., Firstov, S. O.

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Brazing of ZrO2 Ceramics with Metallic Fillers Using Electrical Current by Durov, O.V., Sydorenko, T.V., Koval, O. Yu

“…Zirconium dioxide is characterized by highly mobile anions at high temperatures and is thus capable of transmitting electrical current in these conditions,…”
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Optimization of Detonation Spraying Parameters for (Ti, Cr)C–Ni Composite Coatings by Storozhenko, M. S., Umanskyi, O. P., Melnyk, O. V., Koval, O. Yu, Terentiev, O. Ye, Haltsov, K. M., Bondarenko, O. A., Martsenyuk, I. S., Brazhevskyi, V. P., Chernyshov, O. O.

“…The influence of detonation spraying parameters on the porosity and adhesion of (Ti, Cr)C–Ni coatings was studied. These detonation coatings were applied from…”
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The Influence of the Deformation and Heat Treatment on the Structure and Heat-Resistance of Ti–Al–Zr–Si Alloys by Shevchenko, O. M., Kulak, L. D., Kuzmenko, M. M., Koval, O. Yu, Kotko, A. V., Kravchenko, I. F., Firstov, S. O.

“…The heat-resistant Ti–Al–Zr–Si alloys (base Ti–(6–7)Al–(2–3) Zr–(1–1.5)Si and additionally alloyed Ti–(6–7)Al–(3–5)Zr–(1–1.5)Si–(2–4)Sn), obtained by electron…”
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Effect of Plasma Spraying Parameters on the Properties of (Ti, Cr)C–Ni Composite Coatings by Umanskyi, O. P., Terentiev, O. Ye, Storozhenko, M. S., Koval, O. Yu, Gubin, Yu.V., Brazhevskyi, V. P., Chernyshov, O. O.

“…The effect of plasma spraying parameters on the adhesion and porosity of metal ceramic coatings from clad (Ti, Cr)C–Ni composite powders was studied. The…”
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Influence of Thermomechanical and Heat Treatments on the Structure, Phase Composition and Mechanical Properties of Biocompatible Ti–(18–20)Nb–(1–1.2) Si Alloys by Shevchenko, O. М., Kulak, L. D., Kuzmenkо, M. M., Koval, O. Yu, Firstov, S. O.

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Formation of electric-spark coatings from composite materials based on titanium-chromium carbide and diboride by Konoval, V. P., Umans’kyi, O. P., Panasyuk, A. D., Podchernyaeva, I. O., Koval’, O. Yu

“…Electrode composite materials of the TiCrB 2 -(Fe-Cr) and TiCrC-(Fe-Cr) systems are discussed. The composition, structure, mechanical and tribotechnical…”
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Structure and physicomechanical properties of eutectic Ti-Si-X alloys by Firstov, S. O., Horna, I. D., Horpenko, K. O., Beha, M. D., Koval’, O. Yu, Kotko, A. V.

“…We study the structure and physicomechanical properties of various eutectic alloys of Ti-Si-Zr, Ti-Si-B, and Ti-Si-Ga systems. It is shown that Ti-Si-Zr alloys…”
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The Influence of Deformation Modes on the Structure and Properties of Al–Mg–X Powder Composites. II. High-Alloyed Al–Mg Powder Materials by Gogaev, K.A., Voropaev, V.S., Podrezov, Yu. N., Yevich, Ya. I., Koval, O. Yu, Potipaka, Ye. O.

“…The influence of deformation modes on the structure and mechanical properties of powder materials produced from aluminum–magnesium alloys by ultrafast melt…”
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Structure and properties of high-modulus alloys of the Ti-B system by Firstov, S. O., Kuz’menko, M. I., Kulak, L. D., Kotko, A. V., Koval’, O. Yu, Horna, I. D.

“…We study the influence of alloying with Al, Zr, and Si on the structure and mechanical properties (including the modulus of elasticity) of cast and deformed…”
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Fractographic analysis of green compacts of metal powders by Radchenko, O. K., Gogaev, K. O., Koval, O. Yu, Firstov, S. O.

“…The paper examines the mechanisms that contribute to the strength of green compacts produced and tested in different thermal conditions (different homological…”
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Brazing of ZrO.sub.2 Ceramics with Metallic Fillers Using Electrical Current by Durov, O.V, Sydorenko, T.V, Koval, O. Yu

“…Zirconium dioxide is characterized by highly mobile anions at high temperatures and is thus capable of transmitting electrical current in these conditions,…”
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Influence of Niobium and Silicon at Structure of Biocompatible Ti–$x$Nb–(1–1.2)Si Alloys as Cast and After Heat Treatment by Shevchenko, О. М., Кulak, L. D., Кuzmenkо, M. M., Koval, O. Yu, Firstov, S. O.

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Effect of Nickel, Tin, and Indium Doping of the Eutectic Silver–Copper Filler on the Capillary and Contact Processes in Brazing of Nonmetallic Alumina-Based Materials with Titanium by Zhuravlev, V.S., Sydorenko, T.V., Koval, O.Yu

“…The effect of nickel, tin, and indium additions in the eutectic Ag–28 wt.% Cu filler on the capillary and contact processes in brazing of VK94-1 and VK100…”
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Investigation of Influence of Heat Treatment on Structure and Properties of Biocompatible Ti–18Nb–$x$Si Alloys by Shevchenko, О. М., Kulak, L. D., Kuzmenkо, M. M., Koval, O. Yu, Kоtkо, А. V., Ulyanchich, N. V., Piven, O. O., Ruban, T. P., Firstov, S. O.

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Influence of Admixtures of Si, Fe, Ti on Temperature and Kinetics of Dissociation of MgH$_2$ Obtained by Reactive Mechanical Alloyage by Ershova, O. G., Dobrovolsky, V. D., Solonin, Yu. M., Koval, O. Yu

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Study of SiC buffer layer thickness influence on photovoltaic properties of n-GaN NWs/SiC/p-Si heterostructure by Shugurov, K.Yu, Reznik, R.R., Mozharov, A.M., Kotlyar, K.P., Koval, O.Yu, Osipov, A.V., Fedorov, V.V., Shtrom, I.V., Bolshakov, A.D., Kukushkin, S.A., Mukhin, I.S., Cirlin, G.E.

“…In this paper we study the solar cell based on GaN nanowires array grown on Si substrate with buffer SiC layer via molecular beam epitaxy. Crystal quality of…”
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Electrospark Deposition of Fenicrbsic–Meb2 Coatings on Steel by Umanskyi, O.P., Storozhenko, M.S., Tarelnyk, V.B., Koval, O.Yu, Gubin, Yu.V., Tarelnyk, N.V., Kurinna, T.V.

“…The effect of TiB 2 and CrB 2 additions to the commercial self-fluxing FeNiCrBSiC eutectic alloy on the structurization of electrospark coatings was examined…”
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