А. И. Богданов

Composition and structure of heat-resistant coatings based on nickel and iron aluminides

А. И. Богданов

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Analysis of hydration processes in concrete mixtures modified by the introduction of a nanomodifier by electromagnetic activation

Vladimir A. Perfilov, Dmitry Lyashenko, А. И. Богданов

Introduction.Traditional Portland cement-based concretes are characterized by low flexural tensile strength and a tendency to crack formation.One of the promising ways to solve this problem is the use of carbon nanotubes, which act as crystallization centers and provide discrete reinforcement of the …

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Evaluation of Structural and Phase Stability of Multi-Component Heat-Resistant Coatings Based on Alloyed Iron and Nickel Aluminides

V. P. Kulevich, Victor Georgievich Shmorgun, А. И. Богданов, Слаутин Олег Викторович et autres

This study investigates the synthesis, phase evolution, and high-temperature oxidation behavior of multi-component aluminide coatings on EP670 (Fe-Ni base), EP718 (Ni-Fe base), and EP648 (Ni-base) superalloys. The coatings were produced using an economical hot-dip aluminizing method, followed by diffusion heat treatment at …

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BEHAVIOR OF INTERMETALLIC INTERLAYER IN A LAYERED COMPOSITE DURING ITS ROLLING

Victor Georgievich Shmorgun, V. P. Kulevich, D.N. Gurulev, А. И. Богданов et autres

The results of a study on the rolling of a three-layer composite of St3 steel, AD1 aluminum, and VT1-0 titanium at temperatures exceeding the temperature threshold for intermetallic compound formation at the steel-aluminum interlayer boundary are presented. It is shown that the …

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Formation of Ti-Cu-Ni Intermetallic Coatings on Titanium by Laser Processing of an Explosively Welded Layered Composite

А. И. Богданов, V. P. Kulevich, Л. М. Гуревич, Victor Georgievich Shmorgun

This study investigates the influence of design factors and key process parameters—including explosive welding (EXW), rolling, and laser processing—on the formation, microstructure, and tribological properties of Ti–Cu–Ni intermetallic coatings. A combined manufacturing approach was employed, starting with the EXW of an MN19 …

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Surface hardening of titanium with aluminides using a combined technology including explosion welding, pressure treatment, and heat treatment

Victor Georgievich Shmorgun, V. P. Kulevich, А. И. Богданов, Roman Evgenyevich Novikov

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Formation of Intermetallic Coatings on Titanium by Explosive Welding and Subsequent Heat Treatment of the Layered Metal Composite

А. И. Богданов, V. P. Kulevich, Roman Evgenyevich Novikov, Victor Georgievich Shmorgun

An approach for the formation of intermetallic coatings on the titanium surface based on titanium aluminides is proposed. The approach involves producing a layered steel-aluminum-titanium metal composite via explosive welding, followed by heat treatment to form a diffusion zone at the steel–aluminum …

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KINETICS OF COATING FORMATION DURING LIQUID ALUMINIZING OF IRON AND NICKEL BASED ALLOYS

V. P. Kulevich, А. И. Богданов, Victor Georgievich Shmorgun, Владислав Смоленцев et autres

Liquid aluminizing of iron- and nickel-based alloys (10Cr11Ni23Ti3MoB, CrNi32Ti, CrNi45MoWTiAlB, CrNi50WMoTiAlB, CrNi65MoW) was carried out. Graphic dependences of the influence of temperature-time pa-rameters of the aluminizing process on the thickness of the resulting coatings were constructed. It was shown that an increase …

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ASSESSMENT OF THE ADHESION OF HEATED RAW MATERIALS ON A METAL SURFACE COATED WITH IRON ALUMINIDES IN ANODIC PRODUCTION

О. В. Слаутин, Victor Georgievich Shmorgun, Д. В. Проничев, Valentin O. Kharlamov et autres

It has been experimentally proven that attaching a coating of the Fe-Al system intermetallic compounds on the surface of the funnel of the anode mass mixer hopper reduces sticking to the funnel surface, and the latter, with a high probability, is due …

EVALUATION OF ADHESION PROPERTIES OF TITANIUM ALUMINIDE COATINGS REINFORCED WITH ALUMINUM OXIDE FILLER

V. P. Kulevich, А. И. Богданов, Victor Georgievich Shmorgun, D.E. SEDOV et autres

The cohesive and adhesive strength of aluminide coatings formed on the surface of commercially pure titanium in molten aluminum after heat treatment at 850°C was estimated by the scratching method. It is shown that the coating, the outer layer of which has …

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Aluminizing of the EP648 alloy by hot-dipping

V. P. Kulevich, А. И. Богданов, Victor Georgievich Shmorgun

The structure and phase composition of coatings formed on the surface of the EP648 alloy were studied using the hot-dip aluminizing method with subsequent heat treatment. Aluminizing allows one to form a continuous aluminide coating with a clearly distinguishable layered structure, in …

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Истирание и биостойкость полиуретанового эластомера, модифицированного полифторированными полиэтиленполиаминами

С. В. Кудашев, Игорь Ангарович Полицимако, И.В. Владимцева, М. А. Ваниев et autres

Изучено модифицирующее влияние на структуру и свойства полиуретановых эластомеров полифторированных полиаминов, синтезируемых N-алкилированием полиэтиленполиаминов 1Н,1Н,9Н-тригидроперфторнонан-1-олом. Методами рентгеноструктурного анализа, ИК-Фурье-спектроскопии и золь-гель анализа исследована структура модифицированного полиуретана. Показано, что введение модификатора на стадии миграционной полимеризации изоцианата и полиола благоприятно сказывается на упрочнении получаемого …