Tilda Publishing

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

PERSPEKTIVNYE
MATERIALY

Tilda Publishing

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

2025, № 8

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Multiphysics model of thin-film nanostructured composite multiferroics
of the Fe₁₀Ni₉₀/PVDF type and its experimental verification

E. V. Kudyukov, M. A. Kalinin, K. G. Balymov, V. O. Vas’kovskiy

In this article, a multiphysics computer model of a thin-film composite multiferroic is constructed using the finite element method in the Comsol Multiphysics software package. The model is verified using thin-film magnetoelectric composites of the Fe₁₀Ni₉₀/PVDF type as an example, which demonstrates good agreement between the calculated and experimental data. The resulting model has significant potential for both determining and predicting various physical properties of complex multilayer film systems and for optimizing the technical characteristics of sensors based on these composites. Thus, the paper demonstrates the possibility of determining the parameters of acoustic resonances in the system and further evaluating the magnetoelectric coupling coefficient in the resonant mode. The paper also provides calculated data on the magnitude of mechanical stresses in composites arising during resonance and evaluates the damping effect of the substrate.

Keywords: thin films, magnetoelectric effect, computer modeling, composite materials.

DOI: 10.30791/1028-978X-2025-8-5-13

Reference citing:
Kudyukov E.V., Kalinin M.A., Balymov K.G., Vas’kovskiy V.O. Mul'tifizicheskaya model' tonkoplenochnyh nanostrukturirovannyh kompozitnyh mul'tiferroikov tipa Fe10Ni90/PVDF i eyo eksperimental'naya verifikaciya. [Multiphysics model of thin-film nanostructured composite multiferroics of the Fe₁₀Ni₉₀/PVDF type and its experimental verification]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 8, pp. 5 – 13. DOI: 10.30791/1028-978X-2025-8-5-13

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Synthesis of a composite material based on selenite-substituted hydroxyapatite and collagen

S. M. Sipyagina, O. A. Golovanova

Composite materials based on calcium phosphate with the addition of selenite ions and collagen have been synthesized. The composition, morphology of the samples, density, porosity and their degradation in a Tris-buffered saline solution and a model SBF solution (simulated body fluid) have been studied. It has been established that by adding selenite ions to hydroxyapatite, its solubility and porosity can be increased, and the density of such a material is almost comparable to the density of human bone. Adding collagen increases the rate of dissolution and porosity, the density decreases. It has been found that the synthesized hydroxyapatite samples with the addition of collagen, collagen and selenite ions, selenite ions can be used as a bone-substituting material in different cases, each of the samples has a special property.

Keywords: calcium phosphate, selenite ions, collagen.

DOI: 10.30791/1028-978X-2025-8-14-25

Reference citing:
Sipyagina S.M., Golovanova O.A. Sintez kompozicionnogo materiala na osnove selenit-zameshchennogo gidroksiapatita i kollagena [Synthesis of a composite material based on selenite-substituted hydroxyapatite and collagen]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 8, pp. 14 – 25. DOI: 10.30791/1028-978X-2025-8-14-25

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

High entropy bioceramics based on mixed-cationic silicogermanophosphates with glaserite type structure

N. V. Leontiev, D. S. Larionov, D. O. Golubchikov, Ya. Yu. Filippov, E. S. Klimashina,
V. A. Bitanova, A. M. Murashko, I. M. Scherbakov, P. V. Evdokimov, V. I. Putlayev

The results of stereolithographic fabrication of bioceramics with a high-temperature glaserite structure, derived from mixed-cationic silicogermanophosphates and containing up to 10 different osteoinductive chemical elements incorporated into positions of the glaserite structure, are presented. The complex chemical composition of the solid solutions allows for the creation of bioceramics with improved properties for bone tissue reconstruction. The stabilization of the high-temperature polymorph of glaserite, which exhibits significant resorbability, is facilitated by the increased configurational entropy of solid solutions. Powders with submicron-sized particles and enhanced sintering activity were produced through gel-polymer synthesis.

Keywords: mixed-cationic silicogermanophosphates, glaserite, bioceramics, osteoinduction, high entropy phases, resorption, 3D printing.

DOI: 10.30791/1028-978X-2025-8-26-36

Reference citing:
Leontiev N.V., Larionov D.S., Golubchikov D.O., Filippov Ya.Yu., Klimashina E.S., Bitanova V.A., Murashko A.M., Scherbakov I.M., Evdokimov P.V., Putlayev V.I. Vysokoentropijnaya biokeramika na osnove smeshanokationnyh silikogermanatofosfatov s glazeritopodobnoj strukturoj. [High entropy bioceramics based on mixed-cationic silicogermanophosphates with glaserite type structure]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 8, pp. 26 – 36. DOI: 10.30791/1028-978X-2025-8-26-36

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Preparation of core-shell nanofibers and insights from molecular dynamics simulations for interaction between polycaprolactone core and collagen shell

K. Y. Kotyakova, K. G. Gasparyan, Yu. A. Makarets, U. U. Narzulloev, A. I. Ogarkov,
L. F. Tomilin, L. A. Varlamova, L. Y. Antipina, D. V. Shtansky

For the first time, coaxial nanofibrous matrices with a core-shell polycaprolactone@collagen (PCL@Col) structure were obtained without the use of plasticizers and thickeners, in which PCL should provide mechanical strength, and Col should provide improved biocompatibility. The obtained matrix does not require additional processing to remove solvents. For the first time, the interaction of the PCL and Col was modeled and quantitatively estimated using the molecular dynamics method. The simulation revealed a stable nature of the physical binding of PCL with Col, which is preserved even at room temperature. It was found that the interaction between the components is due to physical interaction (hydrogen bonds, electrostatic interaction) without the formation of covalent bonds, which ensures the preservation of the native structure and bioactive properties of Col.

Keywords: coaxial nanofibrous, core-shell structure, polycaprolactone, collagen, theoretical modeling.

DOI: 10.30791/1028-978X-2025-8-37-45

Reference citing:
Kotyakova K.Y., Gasparyan K.G., Makarets Yu.A., Narzulloev U.U., Ogarkov A.I., Tomilin L.F., Varlamova L.A., Antipina L.Y., Shtansky D.V. Poluchenie nanovolokon tipa “yadro – obolochka” i rezul'taty molekulyarno-dinamicheskogo modelirovaniya vzaimodejstviya mezhdu yadrom iz polikaprolaktona i obolochkoj kollagena [Preparation of core-shell nanofibers and insights from molecular dynamics simulations for interaction between polycaprolactone core and collagen shell]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 8, pp. 37 – 45. DOI: 10.30791/1028-978X-2025-8-37-45

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Corrosion-fatigue fracture of industrial aluminium alloys Al – Mg

О. A. Belkin, M. K. Chegurov, V. N. Chuvil’deev, A. V. Nokhrin, A. N. Sysoev,
A. V. Komel’kov, N. A. Kozlova, N. N. Berendeev, V. D. Chupriyanova

The paper describes the results of fatigue and corrosion-fatigue tests of industrial aluminum alloys of the Al – Mg system: AMg2, AMg5 and 1570 alloys. The alloys have a coarse-grained deformed microstructure with inclusions of two types that are oriented along the rolling axis. Fatigue tests were carried out at room temperature, according to the bending with rotation scheme. The tests were carried out in air and in a 3 % aqueous NaCl solution. Fatigue curves during tests in air and in a corrosive environment can be described using the Basquin equation and a model of plastic deformation at the crack tip. The reduced values of the fatigue limit (s_–1) of industrial Al – Mg alloys during fatigue tests in air are due to the presence of micron-sized inclusions. In air tests, an increase in the strength of Al – Mg alloys is accompanied by an increase of s_–1 and a slight decrease in the angle of inclination of the fatigue curve (an increase in the activation energy of plastic deformation at the crack tip DF/kT). The reason for the decrease in s_–1 and DF/kT during corrosion-fatigue tests of Al – Mg alloys is the Rehbinder effect and the occurrence of corrosion defects on the surface of aluminum alloys, primarily pitting and crack–like defects of intergranular corrosion on b-phase particles forming microgalvanic pairs with a crystal lattice.

Keywords: aluminium, Al – Mg, fatigue, corrosion, strength.

Reference citing:
Belkin О.A., Chegurov M.K., Chuvil’deev V.N., Nokhrin A.V., Sysoev A.N., Komel’kov A.V., Kozlova N.A., Berendeev N.N., Chupriyanova V.D. Issledovanie korrozionno-ustalostnogo razrusheniya promyshlennyh alyuminievyh splavov Al – Mg [Corrosion-fatigue fracture of industrial aluminium alloys Al – Mg]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 8, pp. 46 – 60. DOI: 10.30791/1028-978X-2025-8-46-60

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

The analysis of ultrasonic impact on microstructure of stainless steel during direct metal deposition process

I. V. Shvarts, S. А. Nikiforov, A. I. Gorunov, А. Kh. Gilmutdinov

The article presents ultrasonic assisted direct metal deposition process. An experimental set-up has been developed, which ensures the immobility of the substrate and protection of Langevin transducer from overheating. The program for determining the distribution of columnar dendrite sizes based on optical images was developed in order to quantitative analyze analysis of the influence of ultrasound on the microstructure of stainless steel. A comparative analysis of the results made it possible to conclude that ultrasonic vibrations lead to grinding the columnar dendritic structure. The average size of columnar dendrites is reduced from 22.1% to 43.3% for various zones of the cross section of the test sample. An analysis of the standard deviation showed that the sizes of columnar dendrites are more grouped around the average value, which indicates a more evenly distributed metal structure in experiments with ultrasound. The conclusion was drawn about the possible causes of the resulting structure associated with the effect of acoustic streams and cavitation.

Key words: direct metal deposition process, ultrasonic vibrations, stainless steel, microstructure.

DOI: 10.30791/1028-978X-2025-8-61-71

Reference citing:
Shvarts I.V., Nikiforov S.А., Gorunov A.I., Gilmutdinov А.Kh. Analiz vliyaniya ul'trazvukovyh kolebanij na mikrostrukturu nerzhaveyushchej stali v processe pryamogo lazernogo vyrashchivaniya [The analysis of ultrasonic impact on microstructure of stainless steel during direct metal deposition process]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 8, pp. 61 – 71. DOI: 10.30791/1028-978X-2025-8-61-71

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Temperature dependence of heat capacity
and changes in thermodynamic functions of aluminum
conductive alloy AlV0.1 doped with sodium

I. N. Ganiev, Sh. Sh. Okilov, D. Ch. Kurbonov, D. K. Azizova

In the work, the specific heat capacity, heat transfer coefficient and thermodynamic functions of the aluminum conductor alloy AlV0.1 with sodium were determined in the “cooling” mode according to the known specific heat of the reference sample made of aluminum grade A5N. For this purpose, by processing the cooling rate curves of samples made of aluminum conductive alloy AlV0.1 with sodium and a reference, polynomials describing their cooling rates were obtained. Using the values of the cooling rates of the samples from the studied alloys, the standard and their masses, the specific heat capacity and thermodynamic functions of the aluminum conductor alloy AlV0.1 with sodium were calculated depending on temperature. It is shown that with an increase in temperature and sodium content, the heat capacity, enthalpy and entropy of the aluminum alloy AlV0.1 increase slightly, and the Gibbs energy value decreases.

Keywords: aluminum conductor alloy AlV0.1, sodium, heat capacity, heat transfer coefficient, enthalpy, entropy, Gibbs energy.

DOI: 10.30791/1028-978X-2025-8-72-80

Ganiev Izatullo — V.I. Nikitin Institute of Chemistry, Academy of sciences of the Republic of Tajikistan (Dushanbe, Tajikistan, 734063, st. Ayni 299/2), Dr. Sc. (Chem.), Academician of NAST., Professor, Head laboratory, specialist in materials science and metallurgy. E-mail: ganievizatullo48@gmail.com.
Okilov Shakhrom — V.I. Nikitin Institute of Chemistry, Academy of sciences of the Republic of Tajikistan (Dushanbe, Tajikistan, 734063, st. Ayni 299/2), senior researcher, specialist in metallurgy. E-mail: Okilov70070@mail.ru.
Kurbonov Dalerjon — V.I. Nikitin Institute of Chemistry, Academy of sciences of the Republic of Tajikistan (Dushanbe, Tajikistan, 734063, st. Ayni 299/2), PhD student, specialist in materials science. E-mail: dalerjon_93chm@mail.ru.
Azizova Dilafruz — S.U. Umarov Physical-Technical Institue Academy of sciences of the Republic of Tajikistan (Dushanbe, Tajikistan, 734063, st. Ayni 299/1), PhD student, specialist in materials science.

Reference citing:
Ganiev I.N., Okilov Sh.Sh., Kurbonov D.Ch., Azizova D.K. Temperaturnaya zavisimost' teployomkosti i izmenenij termodinamicheskih funkcij alyuminievogo provodnikovogo splava AlV0.1, legirovannogo natriem [Temperature dependence of heat capacity and changes in thermodynamic functions of aluminum conductive alloy AlV0.1 doped with sodium]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 8, pp. 72 – 80. DOI: 10.30791/1028-978X-2025-8-72-80