PERSPEKTIVNYE MATERIALY
2023, No.3
Study of weldability of semi-products
from an alloy
of the Al – Mg – Si – Cu system
Yu. S. Oglodkova, K. V. Antipov, M. D. Panteleev, A. S. Rudchenko
The features of the formation of the microstructure of welded joints of sheets of aluminum alloy V-1381 of the Al – Mg – Si – Cu system, obtained with various parameters of automatic argon-arc welding, were studied. Welding modes were selected that provide a high-quality welded joint and strength at a level not lower than 0.8 of the strength of the base metal. It has been established that welding without filler wire leads to cracking without applying tensile deformation, the use of Sv1221 filler wire compared to SvAMg61 and SvAK5 leads to an increase in the strength characteristics of welded joints by 15 – 20 %. Corrosion resistance of welded joints of sheets from V-1381 alloy was determined. Various experimental modes of laser welding were tested, the microstructure and mechanical properties of welded joints were studied. Parameters have been selected that ensure high quality of welds. The possibility of using laser welding for semi-finished products from alloy V-1381 has been established. The new V-1381 alloy can be recommended for use in aircraft fuselage structural elements, including as an alternative to less corrosion-resistant non-weldable alloys of the D16 type, which will increase the weight efficiency of structures both due to increased strength and through the use of welded joints instead of riveted ones.
Keywords: Al – Mg – Si – Cu system, 6xxx series alloys, B-1381 alloy, automatic argon arc welding, laser welding.
DOI: 10.30791/1028-978X-2023-3-5-13
Oglodkova Yuliya — Federal State Unitary Enterprise “All-Russian Scientific-Research Institute of Aviation Materials” of National Research Center “Kurchatov Institute” (105005 Moscow, Radio str.17), 1 categori engineer, specialist in the field of aluminum wrought alloys. E-mail: julies87@mail.ru.
Antipov Konstantin — Federal State Unitary Enterprise “All-Russian Scientific-Research Institute of Aviation Materials” of National Research Center “Kurchatov Institute” (105005 Moscow, Radio str.17), head of sector, specialist in the field of aluminum wrought alloys,
E-mail: anti_kos@mail.ru.
Panteleev Mikhail — Federal State Unitary Enterprise “All-Russian Scientific-Research Institute of Aviation Materials” of National Research Center “Kurchatov Institute” (105005 Moscow, Radio str.17), Dr Sci (Eng), Head of sector, specialist in the field of solid phase welding, Е-mail:wiam_weld@bk.ru.
Rudchenko Aleksey — Federal State Unitary Enterprise “All-Russian Scientific-Research Institute of Aviation Materials” of National Research Center “Kurchatov Institute” (105005 Moscow, Radio str. 17), 2 category engineer, specialist in the field of aluminum wrought alloys, E-mail: rudchenko.aleksey@gmail.com.
Oglodkova Yu.S., Antipov K.V., Panteleev M.D., Rudchenko A.S. Issledovanie svarivaemosti polufabrikatov iz splava sistemy Al – Mg – Si – Cu [Study of weldability of semi-products from an alloy of the Al – Mg – Si – Cu system]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2023, no. 3, pp. 5 – 13. DOI: 10.30791/1028-978X-2023-3-5-13
Biocompatibility of Ti – Al intermetallic
coatings on titanium alloy Ti6Al4V
A. A. Burkov, P. G. Chigrin, E. N. Sazonova, P. A. Ilchenko
Titanium alloy Ti6Al4V is the most common metal material in orthopaedics. However, it is characterized by high elasticity and bioinertness, which makes it difficult to osseointegrate on its surface and leads to aseptic loosening of the implant, has insufficient corrosion resistance and high wear, leading to the accumulation of metal ions and wear particles in the body of patients. To eliminate these shortcomings, a Ti – Al coating was prepared by electrospark processing of the Ti6Al4V alloy in an equimolar mixture of titanium and aluminum granules. The prepared TiAl coating consists of intermetallic phases: Ti3Al, TiAl, TiAl2, and TiAl3, which have higher tribological properties. Thus, the average value of the friction coefficient of the sample with a TiAl coating was 12% lower, and the reduced wear was 2.36 times less than the original Ti6Al4V alloy one in a simulating body fluid. In addition, the deposition of a TiAl coating on the Ti6Al4V alloy makes it possible to increase the corrosion resistance of its surface. Biomedical studies have shown that the deposition of a TiAl coating on a Ti6Al4V alloy increases the resistance of erythrocytes to the hemolytic agent action. Improving the biological activity of the alloy surface during ESA deposition of TiAl coating leads to normal growth of fibroblasts on it without signs of cytotoxity. Treatment of samples with adhered cell culture by a solution of trypsin-Versen led to a reduction in the density of cells in the coating by 42 %, while in the alloy by 60 %. This indicates a better fibroblast attachment to the surface of the Ti-Al coating, compared to the Ti6Al4V alloy.
Keywords: Ti – Al coating, electrospark deposition, Ti6Al4V alloy, wear, hemolysis.
DOI: 10.30791/1028-978X-2023-3-14-23
Burkov Alexander —Institute of Materials Science of Far Eastern Branch of the Russian Academy of Sciences (Tikhookeanskaya st. 153, 680042, Khabarovsk, Russian Federation), PhD, Senior Researcher, specialist in the field of electrospark alloying and metal coating, E-mail: burkovalex@mail.ru.
Chigrin Pavel — Institute of Materials Science of Far Eastern Branch of the Russian Academy of Sciences (Tikhookeanskaya st. 153, 680042, Khabarovsk, Russian Federation), PhD, Senior Researcher, specialist in the field of kinetics of heterogeneous processes.
E-mail: burkovalex@mail.ru.
Sazonva Elena — Federal State Budgetary Educational Institution of Higher Education“Far Eastern State Medical University”Ministry of Health of the Russian Federation (680000, Muravyov-Amursky st., 35), M.D., PhD, Professor, Vice-Rector for Research, specialist in the field of molecular mechanisms of proliferation and apoptosis processes. E-mail:
nauka@mail.fesmu.ru.
Ilchenko Petr — Federal State Budgetary Educational Institution of Higher Education“Far Eastern State Medical University”Ministry of Health of the Russian Federation (680000, Muravyov-Amursky st., 35), graduate student, lecturer at the Department of Normal and Pathological Physiology of the Far Eastern State Medical University, biochemist. E-mail: liqify@mail.ru.
Burkov A.A., Chigrin P.G., Sazonova E.N., Ilchenko P.A. Biosovmestimost' Ti – Al intermetallidnyh pokrytij na titanovom splave Ti6Al4V [Biocompatibility of Ti – Al intermetallic coatings on titanium alloy Ti6Al4V]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2023, no. 3, pp. 14 – 23. DOI: 10.30791/1028-978X-2023-3-14-23
Choice of accelerators of the vulcanization group
for rubbers based on epichlorohydrin rubber
M. L. Davydova, A. R. Khaldeeva, A. F. Fedorova, M. D. Sokolova
The effect of vulcanization accelerators on the structure and properties of rubbers based on Hydrin T6000 epichlorohydrin rubber has been studied. Mercaptobenzthiazole (MBT) in the amount of 1.5 pts.wt., tetramethylthiuram disulfide (TMTD) — 0.5 – 1.5 pst.wt. were used as accelerators and N,N’-diphenylguanidine (DPG) — 0.5 – 1.5 pst.wt., which represent a triple system of accelerators. The choice of accelerators is based on the possibility of obtaining a vulcanization spatial structure of different sulfide content: thiuram group accelerators promote the formation of mono-, disulfide bonds; guanidine — polysulfide bonds, and thiazole groups — from carbon-carbon to polysulfide with varying degrees of sulfide. According to the results of the study of physical and mechanical properties, the determination of the parameters of the spatial grid and the study of the dynamic behavior of rubber, differences were revealed due to the formation of a spatial structure with different types of cross-links and density. It is shown that rubber containing 1.5 pst. wt. MBT, 0.5 pst. wt. DFG and 0.5 – 1.0 pst.wt. TMTD due to the manifestation of a synergistic effect on the formation of a vulcanization network of a certain density and the ratio of poly-, di- and monosulfide cross-links. Thus, the use of a group of accelerators with different functional effects makes it possible to obtain vulcanizates with an optimal set of technological and operational properties.
Keywords: epichlorohydrin rubber, vulcanizing group, accelerators, vulcanization characteristics, storage module, loss modulus, mechanical loss tangent.
DOI: 10.30791/1028-978X-2023-3-24-31
Davydova Mariya — Institute of oil and gas problems SB RAS of FRC “Yakut science center SB RAS” (20, Avtodorozhnaya st. Yakutsk, 677007), PhD (eng), leading researcher, expert in development and research of elastomeric composites. E-mail: davmlar@mail.ru.
Khaldeeva Anna — Institute of oil and gas problems SB RAS of FRC “Yakut science center SB RAS” (20, Avtodorozhnaya st. Yakutsk, 677007), junior researcher, expert in development and research of elastomeric composites. E-mail: haldeeva-anna@mail.ru.
Fedorova Aitalina — Institute of oil and gas problems SB RAS of FRC “Yakut science center SB RAS” (20, Avtodorozhnaya st. Yakutsk, 677007), PhD (eng), leading researcher, expert in development and research of elastomeric composites. E-mail: faitalina@mail.ru.
Sokolova Marina — Institute of oil and gas problems SB RAS of FRC “Yakut science center SB RAS” (20, Avtodorozhnaya st. Yakutsk, 677007), doctor of sciences (Eng), docent, director, expert in development and research of elastomeric and polymeric composites. E-mail: marsokol@mail.ru.
Davydova M.L., Khaldeeva A.R., Fedorova A.F., Sokolova M.D. Vybor uskoritelej vulkanizacii dlya rezin na osnove epihlorgidrinovogo kauchuka [Choice of accelerators of the vulcanization group for rubbers based on epichlorohydrin rubber]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2023, no. 3, pp. 24 – 31. DOI: 10.30791/1028-978X-2023-3-24-31
Sorption capacity of carbon material based
on polymer raw materials
with respect to methane
A. E. Memetova, A. D. Zelenin, N. R. Memetov, A. V. Gerasimova, V. S. Yagubov,
R. A. Stolyarov, N. A. Chapaksov
The carbon material was synthesized from polymer raw materials (MC-032). He MC-032 has been characterized by various methods, including N2 adsorption-desorption at 77 K, X-ray diffraction analysis, Fourier transform IR spectroscopy, and Raman spectroscopy. The resulting adsorbent has a well-developed porous structure (SBET = 2722 m2/g; VDFT = 1.08 cm3/g). The adsorption of methane was studied in a wide range of pressures at temperatures above the critical one. The maximum adsorption value is ~ 14 mmol/g at 298.15 K and 100 bar. Experimental data on methane adsorption on MC-032 were analyzed using the Dubinin–Radushkevich adsorption model in the temperature range 298.15 – 323.13 K and pressures up to 100 bar. It has been established that the average relative deviations between the experimental results and the results obtained using the Dubinin-Radushkevich model are less than 4 %. It is shown that the differential molar heats of methane adsorption decrease from ~ 25 to ~ 10 kJ/mol. The calculated characteristic adsorption energies are in the range of 5.88 – 6.21 kJ/mol, which indicates that the process of methane adsorption on MC-032 belongs to physical adsorption. MC-032 carbon material has strong adsorption capacity for methane and has good prospects for controlling methane emissions and reducing greenhouse gases.
Keywords: adsorption, methane, carbon adsorbent, high pressures, porous structure, heat of adsorption.
DOI: 10.30791/1028-978X-2023-3-32-42
Memetova Anastasia — Federal State Budgetary Educational Institution of Higher Education “Tambov State Technical University” (392000, Tambov, Sovetskaya St., 106/5, room 2), PhD, associate professor, sorption specialist. E-mail: anastasia.90k@mail.ru.
Zelenin Andrey — Federal State Budgetary Educational Institution of Higher Education “Tambov State Technical University” (392000, Tambov, Sovetskaya str., 106/5, room 2), leading engineer, specialist in nanotechnology. E-mail: zeleandrey@yandex.ru.
Memetov Nariman — Federal State Budgetary Educational Institution of Higher Education “Tambov State Technical University” (392000, Tambov, Sovetskaya St., 106/5, room 2), PhD, associate professor, head of the departmen, nanotechnology specialist. E-mail:
memetov.nr92@mail.tstu.ru.
Gerasimova Alena — Federal State Budgetary Educational Institution of Higher Education “Tambov State Technical University” (392000, Tambov, Sovetskaya st., 106/5, room 2), PhD, senior lecturer, nanotechnology specialist. E-mail: alyona_gerasimova_92@mail.ru.
Yagubov Viktor — Federal State Budgetary Educational Institution of Higher Education “Tambov State Technical University” (392000, Tambov, Sovetskaya st., 106/5, room 2), PhD, engineer, nanotechnology specialist. E-mail: vitya-y@mail.ru.
Stolyarov Roman — Federal State Budgetary Educational Institution of Higher Education “Tambov State Technical University” (392000, Tambov, Sovetskaya st., 106/5, room 2), PhD, associate professor, nanotechnology specialist. E-mail: stolyarovra@mail.ru.
Chapaksov Nikolay — Federal State Budgetary Educational Institution of Higher Education “Tambov State Technical University” (392000, Tambov, Sovetskaya st., 106), senior laboratory assistant, nanotechnology specialist. E-mail: tchapaxov.nikolaj@yandex.ru.
Memetova A.E., Zelenin A.D., Memetov N.R., Gerasimova A.V., Yagubov V.S., Stolyarov R.A., Chapaksov N.A. Sorbcionnaya emkost' uglerodnogo materiala na osnove polimernogo syr'ya po otnosheniyu k metanu [Sorption capacity of carbon material based on polymer raw materials with respect to methane]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2023, no. 3, pp. 32 – 42. DOI: 10.30791/1028-978X-2023-3-32-42
Changes in the microstructure and hardness
after heat treatment of a billet made
of powder high-speed steel R6M5K5
containing a diffusion-alloyed additive
A. C. Akhmetov, Zh. V. Eremeeva
In this work, a study was made of the change in the microstructure of a hot-pressed billet from a powder mixture of high-speed steel grade R6M5K5 containing a diffusion-alloyed additive based on tungsten, molybdenum, cobalt and iron after heat treatment processes: quenching in oil at a temperature of 1230 °C and double high tempering at 550 °C for 60 min. The study was carried out using electron microscopy and energy dispersive X-ray spectroscopy. After quenching, dissolution of small-sized carbides in the matrix is observed, and after two-fold tempering, secondary carbides of the M6C and MC types are already precipitated. The second type of carbides is formed from a separate structural component — a phase based on ferrovanadium, whose powder was used as a source of vanadium. Also, cobalt is unevenly distributed in the matrix, which is concentrated in a separate phase based on a diffusion-alloyed additive. These phases practically do not dissolve, and are quite stable under these conditions of hot pressing and heat treatment. It is shown that the hardness of blanks changes from 63.1 HRA after hot pressing to 67.2 HRA after quenching and up to 66.3 HRA after double tempering.
Keywords: powder metallurgy, powder high speed steel, diffusion alloying, hydrogen, hot pressing, microstructure.
DOI: 10.30791/1028-978X-2023-3-43-48
Akhmetov Amankeldy — NUST MISiS (119049, Moscow, Leninsky pr. 4, building 1), post-graduate student, specialist in the field of powder metallurgy. E-mail:
aman1aotero@gmail.com.
Eremeeva Zhanna — NUST MISiS (119049, Moscow, Leninsky pr. 4, building 1), Dr.Sc. (Eng.), professor, specialist in the field of powder metallurgy.
Akhmetov A.C., Eremeeva Zh.V. Izmenenie mikrostruktury i tverdosti posle termicheskoj obrabotki poroshkovoj bystrorezhushchej stali R6M5K5, soderzhashchej diffuzionno-legirovannuyu dobavku [Changes in the microstructure and hardness after heat treatment of a billet made of powder high-speed steel R6M5K5 containing a diffusion-alloyed additive]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2023, no. 3, pp. 43 – 48. DOI: 10.30791/1028-978X-2023-3-43-48
Influence of the number of impregnation stages
on the macrostructural and strength characteristics
of glassy carbon foams
D. V. Ponomareva, E. I. Timoshchuk, R. E. Shirokov,
E. V. Vasilyeva, I. I. Lyapin, V. Y. Takhtin
The template synthesis of glassy carbon foams was used in the work and the influence of the initial template cell size, the concentration of the solution, and the number of impregnation stages on the macrostructural and strength characteristics of the obtained materials was studied. As a carbon precursor was used the solution of Novolac resin grade SFP-012A2, the coke residue of which is more than 57 wt. %. It was shown that increasing the number of impregnation stages makes it possible to improve strength characteristics while maintaining open porosity at the level of 90 %, while glassy carbon foam based on a polyurethane template with a porosity of 60 pores per inch and 4 stages of impregnation with a solution with a concentration of 30 wt. % has the best set of properties due to the uniform wall thickening in the material volume. The value of compressive strength was 1.12 MPa, which is 2 times higher than the value of foreign analogues, while the open porosity was 91 %. It has been established that a decrease in the size of the cells of the initial template can lead to embrittlement of the material due to the formation of a cluster of overlapped cells. Increasing the mechanical strength of glassy carbon foams while maintaining an open-cell structure expands the field of application of this class of materials.
Keywords:glassy carbon foams, template synthesis, impregnation, compressive strength.
DOI: 10.30791/1028-978X-2023-3-49-56
Ponomareva Daria — Joint Stock Company “Research Institute of Structural Materials Based on Graphite “NIIgrafit” (Moscow, 111524, Electrodnaya st., 2, building 1), senior researcher, specialist in the field of carbon materials and additive technologies. E-mail: DVPonomareva@rosatom.ru.
Timoshchuk Elena — Joint Stock Company “Research Institute of Structural Materials Based on Graphite “NIIgrafit” (Moscow, 111524, Electrodnaya st., 2, building 1), PhD (Eng), head of laboratory, specialist in the field of carbon materials and additive technologies. E-mail: EITimoschuk@rosatom.ru.
Shirokov Ruslan — Joint Stock Company “Research Institute of Structural Materials Based on Graphite “NIIgrafit” (Moscow, 111524, Electrodnaya st., 2, building 1), engineer, specialist in the field composite materials. E-mail: REShirokov@rosatom.ru.
Vasilyeva Ekaterina — Joint Stock Company “Research Institute of Structural Materials Based on Graphite “NIIgrafit” (Moscow, 111524, Electrodnaya st., 2, building 1), engineer, specialist in the field composite materials. E-mail: EkaVlVasilyeva@rosatom.ru.
Lyapin Ilnur — Joint Stock Company “Research Institute of Structural Materials Based on Graphite “NIIgrafit” (Moscow, 111524, Electrodnaya st., 2, building 1), junior researcher, specialist in the field of additive technologies. E-mail: IILyapin@rosatom.ru.
Takhtin Valery — Joint Stock Company “Research Institute of Structural Materials Based on Graphite “NIIgrafit” (Moscow, 111524, Electrodnaya st., 2, building 1), junior researcher, specialist in the field of composite materials. E-mail: VYTakhtin@rosatom.ru.
Ponomareva D.V., Timoshchuk E.I., Shirokov R.E., Vasilyeva E.V., Lyapin I.I., Takhtin V.Y. Vliyanie kolichestva stadij impregnacii na makrostrukturnye i prochnostnye harakteristiki steklouglerodnyh pen [Influence of the number of impregnation stages on the macrostructural and strength characteristics of glassy carbon foams]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2023, no. 3, pp. 49 – 56. DOI: 10.30791/1028-978X-2023-3-49-56
Effect of mechanical activation time
on structure and mechanical properties
of W-Cu powder composite
E. V. Evstratov, A. S. Baikin, S. I. Averin
Mixtures of tungsten-copper powders (88.2 wt. % W + 11.8 wt. % Cu) with different granulometric composition after mechanical activation at different process times were studied. Before mechanical activation, W particles have a size of about 4 μm, and large agglomerates of tungsten particles are ~20 μm. The structures and elemental composition of W-Cu powder samples before and after mechanical activation (1, 3, 5, and 10 min) were studied by scanning electron microscopy and X-ray microanalysis. The strength (compression) tests of pressed samples in a cylindrical matrix 12 mm in diameter were carried out on an Instron 3382 testing machine. Powder compaction curves were obtained, the dependences of the pressing stress on density were plotted, and the dependence of the sample density on the mechanical activation time was determined. As a result of strength tests, the dependences of stress on strain were obtained. The highest density of the mixture is achieved when the duration of treatment in the mechanical activator is 5 min. A further increase in the processing time of the mixture leads to the grinding of the powder and the destruction of the agglomerates. The average particle size of the powder decreases, which leads to a deterioration in the compaction of the samples. At the same time, with an increase in the treatment time to 10 min, the distribution of copper particles over the sample improves simultaneously with a decrease in the size of its particles to 100 – 400 nm, which, apparently, affects the increase in strength.
Keywords:density, strength, mechanoactivator, powder, charge.
DOI: 10.30791/1028-978X-2023-3-57-63
Evstratov Eugene — Baikov Institute of Metallurgy and Materials Science Russian academy of sciences (Moscow, 119334, Leninsky Prospekt, 49), PhD, senior researcher, specialist in the field of powder functional materials. E-mail: evev@imet.ac.ru.
Baikin Alexander — Baikov Institute of Metallurgy and Materials Science russian academy of sciences (Moscow, 119334, Leninsky Prospekt, 49), PhD, researcher, specialist in chemistry and materials sciences. E-mail: baikinas@mail.ru.
Averin Sergei — Baikov Institute of Metallurgy and Materials Science Russian academy of sciences (Moscow, 119334, Leninsky Prospekt, 49), without degree, researcher, specialist in the field of powder functional materials. E-mail: saverin@imet.ac.ru.
Evstratov E.V., Baikin A.S., Averin S.I. Vliyanie prodolzhitel'nosti mekhanicheskoj aktivacii na strukturu i mekhanicheskie svojstva poroshkovogo kompozita W – Cu [Effect of mechanical activation time on structure and mechanical properties of W-Cu powder composite]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2023, no. 3, pp. 57 – 63. DOI: 10.30791/1028-978X-2023-3-57-63
The influence of the structure
of azo compounds on the deposition process
and the quality of copper coatings
on Anodized aluminum alloys
T. I. Devyatkina, R. V. Taranets, V. V. Rogozhin, V. V. Isaev
A comparative analysis of the influence of the structure of azo compounds (on the example of methyl red (MKR) and nitroso-p-salt (NRS)) was carried out during copper plating of anodized aluminum alloys, on the microstructure, micro-roughness and quality of deposited copper coatings. It is shown that the choice of azo dye significantly depends on the charge of the surface of the oxide film in the solutions used. It is shown that the dyes used should have at least two functional groups in their composition, one of which should ensure the formation of complexes with copper ions, and the other – their adhesion to the surface of the oxide film due to the forces of electrostatic interaction. The adsorption of azo compounds changes the structure of the double electric layer at the film – electrolyte interface, which affects the speed of the copper plating process. At the same time, the mobility of the formed complexes in the adsorption layer increases, which leads to a better opening of the film surface. The studied indicators (dyes) positively affected the structure of the copper coating (eliminated defects and made it fine-crystalline), and also significantly smoothed the surface of the copper coating. The advantage of using the NRS over the MKR was revealed, which allowed not only to obtain a high-quality coating, but also to significantly intensify the copper plating process. A new composition of copper sulfuric acid electrolyte for coating anodized aluminum alloys at elevated cathode current densities with preservation of fine-crystalline structure and smoothed surface is proposed.
Keywords:aluminum alloys, oxide film, adsorption, azo compounds (dyes), copper coating, current density, microstructure, roughness.
DOI: 10.30791/1028-978X-2023-3-64-74
Devyatkina Tatiana — Federal State Budgetary Educational Institution of Higher Education “R.E.Alekseev Nizhny Novgorod State Technical University” (603950, Nizhny Novgorod, Minina Str., 24), PhD (Eng), associate professor, specialist in electrochemistry and industrial electroplating. Е-mail: dticom14@gmail.com
Taranets Roman — Federal State Budgetary Educational Institution of Higher Education “R.E.Alekseev Nizhny Novgorod State Technical University” (603950, Nizhny Novgorod, Minina Str., 24), assistant, specialist in electrochemistry and industrial electroplating.
Rogozhin Vyacheslav —Federal State Budgetary Educational Institution of Higher Education “R.E.Alekseev Nizhny Novgorod State Technical University” (603950, Nizhny Novgorod, Minina Str., 24), Dr Sci (Eng), professor, specialist in electrochemistry and industrial electroplating.
Isaev Valery — Federal State Budgetary Educational Institution of Higher Education “R.E.Alekseev Nizhny Novgorod State Technical University” (603950, Nizhny Novgorod, Minina Str., 24), PhD (Eng), associate professor, specialist in electrochemistry and industrial electroplating.
Devyatkina T.I., Taranets R.V., Rogozhin V.V., Isaev V.V. Vliyanie stroeniya azosoedinenij na process osazhdeniya mednyh pokrytij na anodirovannye alyuminievye splavy [The influence of the structure of azo compounds on the deposition process and the quality of copper coatings on Anodized aluminum alloys]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2023, no. 3, pp. 64 – 74. DOI: 10.30791/1028-978X-2023-3-64-74
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