ОМ

О. М. Myslyvchenko

Frantsevich Institute for Problems in Materials Science

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Ostap Zgalat-Lоzynskyy

National Academy of Sciences of Ukraine

O. P. Gaponova

Sumy State University

МО

М. О. Krapivka

Frantsevich Institute for Problems in Materials Science

ВФ

В. Ф. Горбань

National Academy of Sciences of Ukraine

M. V. Karpets

National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”

Viacheslav Tarelnyk

Sumy National Agrarian University

Larisa Krushynska

Frantsevich Institute for Problems in Materials Science

I. V. Kud’

National Academy of Sciences of Ukraine

B. Antoszewski

Kielce University of Technology

AА

A. А. Bondar

National Academy of Sciences of Ukraine

Cooperative Institutions

National Academy of Sciences of Ukraine

Frantsevich Institute for Problems in Materials Science

Sumy State University

National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”

G.V. Kurdyumov Institute for Metal Physics

Polish Academy of Sciences

Sumy National Agrarian University

AGH University of Krakow

Institute of Software Systems

National Academy of Sciences

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Laser Treatment of Electrospark-Deposited Ti0.8W0.25Cr0.5FeCo1.75Ni3AlB0.6 High-Entropy Coatings

JOM (2024)

О. М. Myslyvchenko Roman Z. Lytvyn К. Э. Гринкевич Ostap Zgalat-Lоzynskyy Anatolii Bondar

Ingot

Arc melting

10.1007/s11837-024-06552-z

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Влияние содержания Ni на износостойкость литого высокоэнтропийного сплава VCrMnFeCoNiх

M. V. Karpets Мырослав Василиевич Карпец Myroslav Vasyliovych Karpets В. Ф. Горбань В. Ф. Горбань

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Вдосконалення технології азотування методом електроіскрового легування

Metaloznavstvo ta obrobka metalìv (2023)

O. P. Gaponova V. O. Okhrimenko Наталія В’ячеславівна Тарельник О. М. Myslyvchenko

The work shows studies aimed at developing methods for protection of structural steels on the example of steels 20 and 40, from wear, using the electricity spark alloying (ESA), by applying the nitrogen-like mixture on the treated surface with subsequent vanity of steel electrode appropriate to the material of the workpiece. To increase the thickness of the surface layer and the best adhesion of the coating is offered in front of the ESA electrode-tools made of steel of the corresponding brand, to form a mold of aluminum, using an electrode from the aluminum bar of the brand of blood pressure. Metrolographic studies were performed and the distribution of microtrandomness in the coating. Studies have shown that nitrogen -containing coatings consist of a "white" layer ", which smoothly goes into the diffusion zone and base metal. The obtained coatings have the highest thickness of "white layer" 110-130 microns. The results of the study of the micro-hardness of the obtained nitrogen-containing coatings indicate an increase in hardness to 9700-9910 MPa. The phase composition of nitrogen coatings is represented by a alloy solid and cubic iron nitride, aluminum dissolves in nitride and ferrite. The considered methods of application of nitrogen -containing coatings can be used to strengthen the surface of responsible parts and elements of pumping and compressor equipment: end surfaces of rings, for protective bushings; piston machines, mechanisms that have increased wear of the product, etc. Keywords: electro-spark alloying, microstructure, nitriding, steel, phase analysis.

10.15407/mom2023.01.058

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Effect of nickel on the structure and phase composition of the VCrMnFeCoNi x high-entropy alloy

Journal of Superhard Materials (2015)

M. V. Karpets О. М. Myslyvchenko O. S. Makarenko В. Ф. Горбань М. О. Krapivka

Volume fraction

High-Entropy Alloys

10.3103/s1063457615030053

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Citations (15)

Wear-Resistant Coatings Produced from TiN–TiB2 and TiN–Si3N4 Composites by Electrospark Deposition and Laser Processing

Powder Metallurgy and Metal Ceramics (2024)

R. V. Lytvyn К. Э. Гринкевич О. М. Myslyvchenko I. V. Trachenko O. M. Bloschanevych

Deposition

10.1007/s11106-024-00421-9

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Citations (1)

Thermophysical properties of Zr65Cu17.5Ni10Al7.5 bulk metallic glass

Journal of Non-Crystalline Solids (2025)

Ruslan Sergiienko Adit Sharma Oleksandr Shcheretskyi Vladislav Zadorozhnyy Volodymyr O. Shcheretskyi

10.1016/j.jnoncrysol.2025.123400

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Investigation of the Structure and Properties of MoS2 Coatings Obtained by Electrospark Alloying

Coatings (2024)

Oksana Haponova Viacheslav Tarelnyk Tomasz Mościcki N. V. Tarelnyk Joanna Półrolniczak

Electrospark coatings alloyed with MoS2 have been studied. The coatings were obtained by the following two strategies: the first consisted of pre-applying molybdenum disulfide to the treated surface and alloying with a molybdenum electrode (Mo + MoS2 coating); the second consisted of applying a paste with a sulfur content of 33.3% to the treated surface and alloying with a molybdenum electrode (Mo + S coating). The structure, phase composition, and tribological properties of the coatings were investigated. The coatings have a complex structure consisting of an upper soft layer, a hardened white layer, a diffusion zone, and a substrate. Element analysis and cross-sectional hardness changes indicated that element diffusion occurred at the coating/substrate interface. The phase composition of the coatings is represented by BCC and FCC solid solutions on Fe, and MoS2 is also detected. In Mo + S coatings, the molybdenum disulfide on the surface is about 8%; in Mo + MoS2 coatings, it is 27%–46%. The obtained coatings show very good tribological properties compared to molybdenum ESA coatings. The frictional forces and coefficients are reduced by a factor of 10 and 40, depending on the test conditions.

Molybdenum disulfide

10.3390/coatings14050563

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Influence of Boron on the Structure and Physicomechanical Properties of Ti30Zr25Hf15Nb20Ta10 High-Entropy Alloy

Materials Science (2022)

О. М. Myslyvchenko В. Ф. Горбань A. V. Samelyuk М. О. Krapivka

Arc melting

Structural material

10.1007/s11003-023-00680-8

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Zirconium dioxide stabilized with yttrium oxide and cerium oxide (8Ce2YSZ) for solid oxide fuel cell anode and electrolyzers application

Uspihi materialoznavstva (2022)

І. O. Polishko E. М. Brodnikovs’kyi D. M. Brodnikovskyi N. О. Lysunenko R.V. Horda

Solid oxide fuel cells (SOFC) are among the most promising technologies for the electricity generation due to their high efficiency, reliability, flexibility in fuel selection, absence of valuable platinum group metal catalysts, safety and environmental friendliness.Typically, the SOFC is built on the basis of its anode, which is actually also its carrier. This is due to the researchers wish to minimize the ohmic resistance of the electrolyte layer via its thinning that is extremely critical for reducing SOFC operating temperature. In this regard, the anode must be strong enough both to make it easier to handle when making the whole cell and to ensure its stable operation. In addition to the carrier function, the anode shall provide sites for reacting gaseous fuel with oxygen ions, which are delivered through the electrolyte, and supplying the fuel gas components to the reaction sites and removing the fuel oxidation reaction products to the outside.The work deals with the comparative study of ceramic materials based on ZrO2, co-stabilized with CeO2 and Y2O3, and stabilized with Y2O3to be used in producing the SOFC anode, and for further structural optimization for future SOFCs.8Ce2YSZ ceramic samples made by hydrothermal synthesis (with two different modes of drying precipitation) have tetragonal phase and 6—8% residual porosity. The 8Ce2YSZ samples, showed the biaxial bending strength — 542 MPa and 486 MPa, respectively. The 8YSZ and 3YSZ samples have cubic phase with a strength of 181 MPa and tetragonal phase with a strength of 577 MPa, respectively at 1% porosity.The specific electrical conductivity of 8Ce2YSZ and 8YSZ is 1,1•10-3, 4•10-3 S/cm, 1,2•10-2 S/cm and 5,2•10-3, 2,7•10-2 S/cm, 9,3•10-2 S/cm at 600, 700, 800 °C, respectively. Keywords: solid oxide fuel cell, electrolyte, anode, zirconium dioxide, mechanical strength, ionic conductivity.

Cerium oxide

10.15407/materials2022.04-05.111

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Properties of Metal–Metal Nitride Vacuum-Arc Multilayer Coatings

Journal of Superhard Materials (2020)

В. Ф. Горбань A. O. Andreev В. А. Столбовой О. М. Myslyvchenko A. D. Kostenko

10.3103/s1063457620010050

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Citations (5)