Tilda Publishing

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

PERSPEKTIVNYE
MATERIALY

Tilda Publishing

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

2025, № 5

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

High-temperature forming, structure and phase composition
of composites based on TiB/TiAl(Nb,Mo)B

P. M. Bazhin, M. S. Antipov, A. P. Chizhikov, A. S. Konstantinov,
A. D. Bazhina, P. A. Stolin

The paper presents experimental studies of high-temperature molding of TiB/TiAl(Nb,Mo)B-based materials under free SHS compression conditions, which combines combustion processes in the mode of self-propagating high-temperature synthesis of the initial powder components and their shear deformation after the passage of the combustion wave. The objects of study were composites consisting of both 100 % TiB-(20 – 40) wt.% Ti and TiAl(Nb,Mo)B alloy (at %: 51.85 Ti – 43 Al – 4 Nb – 1 Mo –
0.15 B), and two-layer composite materials in the following layer proportions, vol. %: 70TiB/30 TiAl(Nb,Mo)B, 50TiB/50 TiAl(Nb,Mo)B, 30TiB/70 TiAl(Nb,Mo)B. The degree of deformation was chosen as the formability criterion for the studied composites during shear deformation. It was found that by changing the composition of each layer in the composite and the technological modes of free SHS compression, it is possible to regulate the degree of deformation from 0.2 to 0.55. It was shown that the technological modes of free SHS compression (delay time, pressing pressure, deformation rate) and the initial composition of the composites affect their formability and structure. The structural features of the obtained composites and their phase composition were studied. It was shown that a diffusion zone is formed between the ceramic and intermetallic layers as a result of chemical interaction, which can be regulated in the range of 30 – 150 μm.

Key words: composite, molding, synthesis, shear deformation, ceramics, intermetallics.

DOI: 10.30791/1028-978X-2025-5-5-16

Reference citing:
Bazhin P.M., Antipov M.S., Chizhikov A.P., Konstantinov A.S., Bazhina A.D., Stolin P.A. Vysokotemperaturnoe formovanie, struktura i fazovyj sostav kompozitov na osnove TiB/TiAl(Nb, Mo)B [High-temperature forming, structure and phase composition of composites based on TiB/TiAl(Nb,Mo)B]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 5, pp. 5 – 16. DOI: 10.30791/1028-978X-2025-5-5-16

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Use of injection-thermal treatment to lower defectiveness of dielectric films of MIS structures

D. V. Andreev, S. A. Kornev, G. G. Bondarenko, V. V. Andreev

The paper proposes to implement the injection-thermal treatment of MIS structures by step-by-step increasing of density of high-field injection current up to bounded Jb value. At this density, there are no considerable degradation of the gate dielectric and its interface with semiconductor. Density of charge, injected into the dielectric under the injection-thermal treatment, should provide revealing of samples with the external defects. The injection-thermal treatment results in a high reduction of the external defects in the dielectric film of MIS structures. Besides, the treatment gives a capability to exclude the most part of samples having low charge injected until the breakdown. We demonstrate that after the injection-thermal treatment, the MIS structure reliability is mostly caused by the internal defects of the dielectric film what greatly increases reliability rates of MIS devices.

Keywords: MIS structure, gate dielectric, injection-thermal treatment, stress, injection current, charge accumulation, high-field.

DOI: 10.30791/1028-978X-2025-5-17-23

Reference citing:
Andreev D.V., Kornev S.A., Bondarenko G.G., Andreev V.V. Ispol'zovanie inzhekcionno-termicheskoj obrabotki dlya umen'sheniya defektnosti dielektricheskih plenok MDP-struktur [Use of injection-thermal treatment to lower defectiveness of dielectric films of MIS structures]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 5, pp. 17 – 23. DOI: 10.30791/1028-978X-2025-5-17-23

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Thermal expansion of lanthanum zirconate ceramics

V. R. Khrustov, A. S. Kaygorodov, S. V. Zayats

The high-temperature behavior of lanthanum zirconate ceramics, depending on the conditions of La2Zr2O7 synthesis and sintering was investigated. The lanthanum zirconate was synthesized by solid-state method and the ceramics were sintered at temperatures of 1500 – 1550°C with different dwell times. The thermal expansion and shrinkage activity of the ceramics were studied by dilatometric analysis. The coefficients of linear thermal expansion (CTLE) were determined in the temperature range of 200 – 1200 °C during heating and cooling. CTLE of the obtained ceramics (9·10–6 1/K) is significantly less than that of tetragonal yttria doped zirconia — YSZ (13.5 10–6 1/K). CTLE decreases with increasing ceramic density. The microhardness of the ceramics was 6.3 GPa.

Keywords: lanthanum zirconate, thermal expansion, CTLE, ceramics, shrinkage, microhardness.

DOI: 10.30791/1028-978X-2025-5-24-29

Reference citing:
Khrustov V.R., Kaygorodov A.S., Zayats S.V. Termicheskoe rasshirenie keramiki cirkonata lantana [Thermal expansion of lanthanum zirconate ceramics]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 5, pp. 24 – 29. DOI: 10.30791/1028-978X-2025-5-24-29

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Features of structural changes in the amorphous alloy Al₈₅Ni₅Fe₇La₃ under xenon ion irradiation

N. D. Bakhteeva, A. N. Nechaev, V. K. Semina, O. V. Rybalchenko, E. V. Todorova,
N. N. Presnyakova, T. R. Chueva, P. P. Umnov, N. V. Gamurar

The structure and thermal stability of the amorphous alloy Al₈₅Ni₅Fe₇La₃ in the initial rapidly quenched state and after xenon ion irradiation with 167 MeV energy of in the range of fluence values 10¹² – 2·10¹⁴ ions/cm² were studied. Based on the modeling of defect formation profiles, the heterogeneity of the defect distribution over the thickness of the irradiated sample was found. The xenon ions mean free path has been determined, which determines the zone of maximum accumulation of radiation defects. It is in this zone that nanocrystallization with the primary release of the metastable intermetallic Al₈(Fe,Ni)₂La was detected by electron microscopy methods. A comparative analysis of the alloy structure after quenching, irradiation and annealing was carried out using complex structural research methods. It is shown that irradiation leads to a decrease in the degree of short-range order in an amorphous matrix and increases the thermal stability of an amorphous nanocrystalline structure partially crystallized as a result of irradiation.

Keywords: aluminum alloy, amorphous structure, xenon ion irradiation, thermal stability, simulation, thermal analysis, phase composition, intermetallics.

DOI: 10.30791/1028-978X-2025-5-30-44

Reference citing:
Bakhteeva N.D., Nechaev A.N., Semina V.K., Rybalchenko O.V., Todorova E.V., Presnyakova N.N., Chueva T.R., Umnov P.P., Gamurar N.V. Osobennosti strukturnyh izmenenij v amorfnom splave Al85Ni5Fe7La3 pri obluchenii ionami ksenona [Features of structural changes in the amorphous alloy Al₈₅Ni₅Fe₇La₃ under xenon ion irradiation]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 5, pp. 30 – 44. DOI: 10.30791/1028-978X-2025-5-30-44

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Loading and release of rhodamine B from a composite material, based on polycaprolactone nanofibers and calcium carbonate microparticles, doped with magnetite nanoparticles

N. V. Koronevskiy, E. S. Prikhozhdenko, O. A. Inozemtseva,
B. V. Sergeeva, I. S. Velikanov, S. A. Sergeev

The investigation of rhodamine B loading and release processes from polycaprolactone nanofibers and a composite material based on mineralized polycaprolactone nanofibers, modified and not modified with magnetite nanoparticles, are presented. It was shown that the volume of rhodamine B loaded into polycaprolactone nanofibers mineralized with calcium carbonate microparticles is 1.5 times greater than the volume of the dye introduced into “pure” polycaprolactone fibers.

Keywords: calcium carbonate microparticles, polycaprolactone nanofibers, magnetite nanoparticles, rhodamine B.

DOI: 10.30791/1028-978X-2025-5-45-54

Reference citing:
Koronevskiy N.V., Prikhozhdenko E.S., Inozemtseva O.A., Sergeeva B.V., Velikanov I.S., Sergeev S.A. Zagruzka i vysvobozhdenie rodamina B iz kompozitnogo materiala na osnove nanovolokon polikaprolaktona i mikrochastic karbonata kal'ciya, dopirovannogo nanochasticami magnetita [Loading and release of rhodamine B from a composite material, based on polycaprolactone nanofibers and calcium carbonate microparticles, doped with magnetite nanoparticles]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 5, pp. 45 – 54. DOI: 10.30791/1028-978X-2025-5-45-54

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Effect of carbonization temperature on the physicochemical and sorption properties of coals
from plant biomass for dyes removal from solutions

A. Kh. K. Kadum, D. A. Badin, S. O. Rybakova, I. V. Burakova,
A. E. Burakov, T. P. Dyachkova, A. G. Tkachev

The work is devoted to the synthesis and determination of the physicochemical properties of biochars obtained by the hydrothermal carbonization (HTC) of plant biomass, in particular, peach waste. The effect of material processing modes on the physicochemical properties of the materials was assessed, namely, the features of changes in the crystal structure and chemical composition depending on the carbonization temperature of the samples were determined. Various methods were used to analyze the physical, chemical and morphological characteristics of the obtained materials, including scanning electron microscopy, energy-dispersive elemental analysis, IR Fourier spectroscopy, Raman spectroscopy and X-ray phase analysis. It is shown that with an increase in the carbonization temperature, the concentration of elemental carbon in the samples increases and the content of functional groups decreases. Preliminary sorption studies were carried out for the obtained samples under static conditions on model solutions of organic dyes — methylene blue (MB) and Congo red (CR). It was found that carbonization increases the adsorption capacity of HTC coals by 2.5 – 3 times, but, in general, does not affect the speed of the sorption flow. The equilibrium time for both dyes was 15 minutes.

Keywords: biochar, hydrothermal carbonization, peach pomace, adsorption, organic dyes, methylene blue, Congo red.

DOI: 10.30791/1028-978X-2025-5-55-66

Kadum Ali Hussain — Tambov State Technical University (Tambov, 392000, Leningradskaya, 1), graduate student, specialist in the field of activated biochar production. E-mail: ali_strong_2010@yahoo.com.
Badin Dmitriy — Tambov State Technical University (Tambov, 392000, Leningradskaya, 1), master’s student, specialist in the field of obtaining biochars, activated nanoporous materials. E-mail: badin.dima97@gmail.com.
Rybakova Sofya — Tambov State Technical University (Tambov, 392000, Leningradskaya, 1), student, E-mail: sofyarybackova@yandex.ru.
Burakova Irina — Tambov State Technical University (Tambov, 392000, Leningradskaya, 1), PhD (Eng), assistant professor, specialist in the field of adsorption technologies and carbon nanomaterials synthesis. E-mail: iris_tamb68@mail.ru.
Burakov Alexander — Tambov State Technical University (Tambov, 392000, Leningradskaya, 1), PhD (Eng), assistant professor, specialist in the field of adsorption technologies and carbon nanomaterials synthesis. E-mail: m-alex1983@yandex.ru.
Dyachkova Tatyana — Tambov State Technical University (Tambov, 392000, Leningradskaya, 1), Dr of Sci (Chem), professor, specialist in the synthesis of carbon nanomaterials. E-mail: mashtatpetr@mail.ru.
Tkachev Alexey — Tambov State Technical University (Tambov, 392000, Leningradskaya, 1), Dr of Sci (Eng), professor, head of the department, specialist in the synthesis of carbon nanomaterials. E-mail: nanotam@yandex.ru.

Reference citing:
Kadum A.Kh.K., Badin D.A., Rybakova S.O., Burakova I.V., Burakov A.E., Dyachkova T.P., Tkachev A.G. Vliyanie temperatury karbonizacii na fiziko-himicheskie i sorbcionnye svojstva uglej iz rastitel'noj biomassy dlya udaleniya krasitelej iz rastvorov [Effect of carbonization temperature on the physicochemical and sorption properties of coals from plant biomass for dyes removal from solutions]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 5, pp. 55 – 66. DOI: 10.30791/1028-978X-2025-5-55-66

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Nitridization of the Zr – V metal pair and evaluation
of the thermal emf of the synthesized ceramic sample

I. A. Kovalev, G. P. Kochanov, A. N. Rogova, A. A. Ashmarin,
А. А. Zerkov, A. S. Chernyavsky, K. A. Solntsev

Binary compact nitrides were synthesized by nitriding the Zr – V pair while preserving the shape of the initial metal blanks. The kinetic and voltage dependences of the nitridization process are determined. For individual metals and the junction region, the interaction with nitrogen proceeds by different mechanisms. Pure metals react with nitrogen through the formation of three and two-layer structures. Nitridization of the junction area is accompanied by the decomposition of the Zr – V solid solution with the separation of metallic vanadium at the grain boundaries as a separate phase. At the same time, the products of the reaction with nitrogen are mutually dissolved: solid solutions of nitrogen in both metals and their nitrides of different stoichiometry. The ceramic formation process is accompanied by vanadium diffusion in an area with a lower concentration and the formation of intermetallic Zr_0,3V_0,6N_0,1, which does not interact with nitrogen at the synthesis temperature. For gradient and ceramic structures (Zr – V)N_x in the temperature range –195.7 – +550 °C, the nature of the dependence of the thermo-EMF on the nitriding time is established and its value is estimated. The resulting ceramic and gradient materials can be used as ceramic thermoelectric converters.

Keywords: alloy, binary nitrides, thermoelectric converters, zirconium nitride, vanadium nitride, oxidative сonstruction, ceramics.

DOI: 10.30791/1028-978X-2025-5-67-79 

Reference citing:
Kovalev I.A., Kochanov G.P., Rogova A.N., Ashmarin A.A., Zerkov А.А., Chernyavsky A.S., Solntsev K.A. Nitridizaciya metallicheskoj pary Zr – V i ocenka termo-EDS sintezirovannogo keramicheskogo obrazca [Nitridization of the Zr – V metal pair and evaluation of the thermal emf of the synthesized ceramic sample]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 5, pp. 67 – 79. DOI: 10.30791/1028-978X-2025-5-67-79

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Dependence of strength characteristics of synthetic fibers on plasma gas composition and processing time under influence of low-pressure discharge

I. Sh. Abdullin, I. K. Nekrasov, F. R. Sagitova

The article deals with the physics of the process of changing the strength characteristics of synthetic fibers during processing in high-frequency capacitive discharge of reduced pressure. The dependences of tensile strength of different types of fibers on the composition of plasma-forming gas and on the duration of treatment in CCP low-pressure discharge are determined. It was found that the mixture of argon and propane-butane allows to achieve the greatest increase in tensile strength for all investigated types of synthetic fibers.

Keywords: plasma, CCP discharge, UHMWPE-fibers, carbon fibers, aramid fibers, polypropylene fibers.

DOI: 10.30791/1028-978X-2025-5-80-88

Reference citing:
Abdullin I.Sh., Nekrasov I.K., Sagitova F.R. Zavisimost' prochnostnyh harakteristik sinteticheskih volokon ot sostava plazmoobrazuyushchego gaza i vremeni obrabotki pri vozdejstvii razryada ponizhennogo davleniya [Dependence of strength characteristics of synthetic fibers on plasma gas composition and processing time under influence of low-pressure discharge]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 5, pp. 80 – 88. DOI: 10.30791/1028-978X-2025-5-80-88