Tilda Publishing

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

PERSPEKTIVNYE
MATERIALY

Tilda Publishing

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

2025, № 3

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Prediction of ABX compounds (X — As, Sn, Sb, Pb or Bi) with the MgAgAs structure type
and their crystal lattice parameters

N. N. Kiselyova, V. A. Dudarev, A. V. Stolyarenko, O. V. Senko,
A. A. Dokukin, Yu. O. Kuznetsova

Using machine learning programs, the prediction of not yet obtained 250 compounds of composition ABX (where A and B are different chemical elements, and X are As, Sn, Sb, Pb or Bi) with a crystal structure of the MgAgAs type was carried out and the values of their crystal lattice parameter were estimated. Using the cross-validation method, the best machine learning algorithms were selected for subsequent predicting. When predicting compounds that have not yet been synthesized, the most accurate programs were based on neural network training algorithms, support vector machines and k-nearest neighbors, for which the accuracy was determined to be 88.5, 91.0 and 88.4 %, respectively. When predicting the value of the crystal lattice parameter of the predicted compounds, the best results were obtained using programs based on the Bayesian Ridge methods (coefficient of determination R² = 0.959, mean absolute error MAE = 0.0370, mean square error MSE = 0.0030), ARD Regression (R² = 0.950, MAE = 0.0401, MSE = 0.0036) and Ridge (R² = 0.959, MAE = 0.0368, MSE = 0.0029), i.e. the deviation of the calculated values from the experimental ones was in the range of 0.0368 – 0.0401 Å. When predicting new compounds and estimating their crystal lattice parameters, only the values of the properties of the chemical elements included in their composition were used.

Keywords: MgAgAs, lattice parameter, prediction, machine learning.

DOI: 10.30791/1028-978X-2025-3-5-14

Reference citing:
Kiselyova N.N., Dudarev V.A., Stolyarenko A.V., Senko O.V., Dokukin A.A., Kuznetsova Yu.O Prognozirovanie soedinenij sostava ABX (X — As, Sn, Sb, Pb ili Bi) so strukturoj tipa MgAgAs i parametrov ih kristallicheskoj reshetki [Prediction of ABX compounds (X — As, Sn, Sb, Pb or Bi) with the MgAgAs structure type and their crystal lattice parameters]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 3, pp. 5 – 14. DOI: 10.30791/1028-978X-2025-3-5-14

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Polymer composite material based on carboxylate butadiene-nitrile copolymer
for the production of environmentally friendly dipped products

K. E. Dmitriev, I. S. Korotneva, A. O. Shamina

A polymer composite material based on carboxylate latex-butadiene-nitrile copolymer has been developed for the production of dipped products. The composition of the polymer composite material includes biodegradation stimulants for the degradation of finished products in conditions after the end of their service life. The method for producing a polymer composite material is based on the preparation of a latex composition using dispersions of components of the sulfur vulcanizing group and a biofiller, in which wood flour or coffee cake or potato starch was used. A coagulant composition was selected that ensures the formation of a defect-free latex gel on the surfaces of molds during the manufacture of dipped products. The tests carried out to determine the tensile strength of polymer films proved the relevance of the developed formulation of the polymer composite material. It has been established that low-filled compositions make it possible to obtain products with higher strength compared to unfilled ones. Using standard methods, the work confirmed the environmental safety of products based on the developed polymer composite material and the absence of toxic effects of their degradation products on the viability and growth of higher plants in the early stages. It has been established that decomposition products not only do not have a negative effect on the growth of higher plants, but also contribute to their development. The work shows that, based on the developed polymer composite material and biodegradation stimulators, quick-use dipped products can be produced.

Keywords: butadiene-nitrile copolymer, polymer composite material, dipped products, latex, dispersion, coagulant, biodegradation stimulants, strength, environmental safety.

DOI: 10.30791/1028-978X-2025-3-14-23

Reference citing:
Dmitriev K.E., Korotneva I.S., Shamina A.O. Polimernyj kompozicionnyj material na osnove karboksilatnogo butadien-nitril'nogo sopolimera dlya izgotovleniya ekologichnyh makanyh izdelij [Polymer composite material based on carboxylate butadiene-nitrile copolymer for the production of environmentally friendly dipped products]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 3, pp. 14 – 23. DOI: 10.30791/1028-978X-2025-3-14-23

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Study of the influence of tantalum on the structure and properties of AISI 316l stainless steel

A. M. Romavova, A. I. Gorunov

This work investigates the effect of tantalum on the microstructure and properties of AISI 316L stainless steel produced by direct laser deposition of metal. The powder mixture for direct laser deposition of metal is prepared by adding tantalum powder to AISI 316L alloy powder in proportions of 5 and 95 %, respectively. Printing of metal samples was carried out at laser radiation powers of 180 and 200 W. Comparison of height and width in longitudinal and cross sections, analysis of microstructure, microhardness, friction tests and elemental analysis were carried out. The influence of tantalum on the dendritic structure is shown, namely the appearance of 2nd order axes. It has been established that the tantalum content in the alloy during laser deposition of the metal has a significant effect on the volumetric shrinkage of the samples, and also contributes to the appearance of second-order axes on the first-order axes of dendritic crystals. It has been established that tantalum particles are crystallization centers and also contribute to the grain refinement of AISI 316L stainless steel. During direct laser deposition of metal, tantalum particles do not melt completely and partially retain their original structure, which is confirmed by the results of elemental analysis.

Key words: additive manufacturing, direct metal deposition, stainless steel, tantalum, microstructure.

DOI: 10.30791/1028-978X-2025-3-24-33

Reference citing:
Romavova A.M., Gorunov A.I. Vliyanie tantala na strukturu i svojstva nerzhaveyushchej stali AISI 316L. [Study of the influence of tantalum on the structure and properties of AISI 316l stainless steel]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 3, pp. 24 – 33. DOI: 10.30791/1028-978X-2025-3-24-33

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Study of the properties of nanocomposites based on a mixture of high and low pressure polyethylene with nickel-containing nanofillers

G. G. Mamedova, N. I. Kurbanova, T. M. Gulieva. E. G. Iskenderova

Composite materials based on a mixture of high- and low-pressure polyethylene, including additives of finely dispersed nickel oxide, have been studied by X-ray phase (XRD), differential thermal analysis (DTA) and scanning electron microscopy (SEM). An improvement in the strength, deformation parameters and thermal oxidative stability of the composite was revealed with the introduction of finely dispersed nickel oxide, which, apparently, is due to the formation of interfacial bonds between nickel-containing nanoparticles and components of the polymer composition. It has been shown that nanocomposites based on a mixture of high- and low-density polyethylenes, including additives of finely dispersed zinc oxide, can be processed both by pressing and by injection molding and extrusion, which expands the scope of their applications. Small amounts of nanofiller introduced into the polymer play the role of structure formers - artificial crystallization nuclei, which contributes to the appearance of a fine spherulite structure in the polymer, characterized by enhanced physical, mechanical and thermal properties of the resulting nanocomposite.

Key words: high pressure polyethylene; low-pressure polyethylene; metal-containing composites; nickel oxide nanoparticles; strength properties; deformation properties; thermal properties; XRD, DTA and SEM analyses.

DOI: 10.30791/1028-978X-2025-3-34-41

Reference citing:
Mamedova G.G., Kurbanova N.I., Gulieva T.M., Iskenderova E.G. Issledovanie svojstv nanokompozitov na osnove smesi polietilenov vysokogo i nizkogo davleniya s nikel'soderzhashchimi nanonapolnitelyami [Study of the properties of nanocomposites based on a mixture of high and low pressure polyethylene with nickel-containing nanofillers]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 3, pp. 34 – 41. DOI: 10.30791/1028-978X-2025-3-34-41

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Development and research of cermets based on the NiAl – Al₂O₃ system modified
with MgAl₂O₄ nanoparticles and Y₂O₃ microparticles

L. E. Agureev, S. V. Savushkina, A. A. Ashmarin, E. A. Danilina,
A. V. Ivanov, S. D. Ivanova, S. A. Garibashvili

The article discusses the use of nickel-based metal-ceramic materials with the addition of nanoparticles of refractory compounds to improve their mechanical properties and wear resistance. Research results are presented confirming that aluminum-magnesium spinel nanoparticles and yttrium oxide microparticles play a key role in strengthening the material and blocking grain growth during sintering, which leads to improved mechanical properties. Nanoparticles also reduce friction and wear. The article discusses the effect of sintering on the quality of composites, analyzes the results of tests of the resulting cermets based on the NiAl – Al₂O₃ system using X-ray and microscopic analysis. At the end of the article, data on the mechanical properties of composites with additives of yttrium oxide and aluminum-magnesium spinel, as well as their tribological behavior, are presented. The influence of structure and composition on wear and friction of composites at various temperatures is discussed. The microstructure and composition of wear tracks are analyzed, showing the improvement in the characteristics of composites with the addition of nanoparticles of refractory compounds. Thus, the article focuses on the importance of nanoparticle addition for improving the properties of nickel-based cermet materials in high temperature applications, which may be valuable for the development of new composite materials for power plants and other high temperature technologies.

Keywords: сermet, nickel-aluminium, aluminum oxide, magnesium-alumina spinel. nanoparticles, tribology, spark plasma sintering.

DOI: 10.30791/1028-978X-2025-3-42-60

Reference citing:
Agureev L.E., Savushkina S.V., Ashmarin A.A., Danilina E.A., Ivanov A.V., Ivanova S.D., Garibashvili S.A. Razrabotka i issledovanie kermetov na osnove sistemy NiAl – Al₂O₃, modificirovannyh nanochasticami MgAl2O4 i mikrochasticami Y₂O₃ [Development and research of cermets based on the NiAl – Al₂O₃ system modified with MgAl₂O₄ nanoparticles and Y₂O₃ microparticles]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 3, pp. 42 – 60. DOI: 10.30791/1028-978X-2025-3-42-60

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Deposition of silicon-carbon coatings by electron beam evaporation
of silicon carbide in oxygen containing medium

V. A. Burdovitsin, A. A. Andronov, Ngon A Kiki Lionel Joel, F. A. Sukhovolsky

The results of measuring the electrical, mechanical and optical properties of silicon-carbon films obtained by electron beam evaporation of silicon carbide in an argon-oxygen gas mixture in the pressure range 3 – 5 Pa are presented. The electron beam was generated by a fore-vacuum plasma electron source. It is shown that with an increase in the oxygen content in the gas, the resistivity of the films increases, the hardness decreases and the optical band gap raises. Measurements of the composition and analysis of IR transmission spectra indicate the replacement of silicon-carbon bonds with silicon-oxygen bonds as the gaseous medium is enriched with oxygen.

Keywords: fore-vacuum electron source, silicon carbide, electron beam evaporation, deposition of silicon-carbon coatings.

DOI: 10.30791/1028-978X-2025-3-61-66

Reference citing:
Burdovitsin V.A., Andronov A.A., Ngon A Kiki Lionel Joel, Sukhovolsky F.A. Osazhdenie kremnij-uglerodnyh pokrytij elektronno-luchevym ispareniem karbida kremniya v kislorod soderzhashchej srede [Deposition of silicon-carbon coatings by electron beam evaporation of silicon carbide in oxygen containing medium]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 3, pp. 61 – 66. DOI: 10.30791/1028-978X-2025-3-61-66

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Dependence of granules size on conditional viscosity of suspension during spraying (agglomeration) in a drying granulation plant

O. M. Khapkov, V. S. Shtatnova, D. I. Volkov, A. A. Fadeev

The article presents the results of studies conducted on spraying a powder suspension of the WC–Co–Cr system in a tower spray dryer in order to determine the most appropriate conditional viscosity of the suspension. The maximum amount of agglomerates of the required fraction is determined by further shrinkage during sintering. After sintering and sieving, the powder is suitable for gas-thermal spraying of wear-resistant coatings by the gas-flame method. Studies have been carried out on the selection of starting materials by particle size and bulk density for pre-mixing the suspension, determining the optimal amount of liquid added relative to the dry material with further measurement of the conditional viscosity of the resulting suspensions. The results of measurements of the conditional viscosity of suspensions and particle sizes of agglomerates after spraying on a drying and granulation plant are presented. Agglomeration experiments allowed us to obtain graphs of the dependence of the granule size on the conditional viscosity of the suspension during agglomeration in a drying and granulation plant, indicating that the dependence is extreme. The maximum amount of the required fraction is obtained at a conditional viscosity of 20.07 s. Agglomeration of composite materials by spray drying made it possible to obtain spherical particles of a given fraction suitable for further compaction and subsequent spraying of powder composite material on parts in order to protect them from wear and corrosion.

Keywords: drying and granulation plant, powder material, suspension, conditional viscosity, granule size, spraying, agglomeration.

DOI: 10.30791/1028-978X-2025-3-67-74

Reference citing:
Khapkov O.M., Shtatnova V.S., Volkov D.I., Fadeev A.A. Zavisimost' razmera granul ot uslovnoj vyazkosti suspenzii pri raspylenii (aglomeracii) v sushil'no-granulyacionnoj ustanovke [Dependence of granules size on conditional viscosity of suspension during spraying (agglomeration) in a drying granulation plant]. ]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 3, pp. 67 – 74. DOI: 10.30791/1028-978X-2025-3-67-74

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Corrosion-electrochemical behavior of zinc alloy ZnAlCuPb4-1-2.5 doped
with sodium in an electrolyte environment NaCl

I. N. Ganiev, L. Z. Alieva, A. E. Berdiev, S. J. Alikhonova

Zinc metal grade Ts3 is not widely used. Due to the fact that it contains up to 2.0 – 2.5 % lead. We were given the task of synthesizing a new alloy based on tHe ZnAlCu4-1 zinc alloy using substandard Ts3 grade zinc and additional alloying with metallic soda. Hence the abbreviation of the ZnAlCu4-1 alloy was changed to ZnAlCuPb4-1-2.5. This paper presents the results of a study of the effect of sodium addition on the corrosion-electrochemical behavior of the zinc alloy ZnAlCuPb4-1-2.5 in a NaCl electrolyte environment. The study was carried out on a pulse potentiostat PI-50-1.1 using the potentiostatic method at a potential sweep rate of 2 mV/s. It has been shown that alloying the ZnAlCuPb4-1-2.5 alloy with sodium shifts the potentials of free corrosion, pitting and repassivation to the positive region. With increasing concentration of chloride ion in the NaCl electrolyte, the corrosion rate of alloys increases, regardless of their composition. The addition of sodium to the ZnAlCuPb4-1-2.5 alloy reduces its corrosion rate by 10 – 15 %. Improving the corrosion resistance of zinc alloy ZnAlCuPb4-1-2.5 by 10 % allows the thickness of the protective coating on the protected products to be thinned by the same amount with the same service life. At the same time, for 10,000 tons of zinc costing $4,000 US spent for the above purposes, a 10 % saving is equal to 1,000 tons. The economic effect in this case is 1000·4000=$4 million. USA.

Keywords: zinc alloy ZnAlCuPb4-1-2.5, sodium, potentiostatic method, NaCl electrolyte, corrosion rate, free corrosion potential, pitting potential.

DOI: 10.30791/1028-978X-2025-3-75-84

Reference citing:
Ganiev I.N., Alieva L.Z., Berdiev A.E., Alikhonova S.J. Korrozionno-elektrohimicheskoe povedenie cinkovogo splava CAMSv4-1-2,5, legirovannogo natriem, v srede elektrolita NaCl [Corrosion-electrochemical behavior of zinc alloy ZnAlCuPb4-1-2.5 doped with sodium in an electrolyte environment NaCl]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 3, pp. 75 – 84. DOI: 10.30791/1028-978X-2025-3-75-84