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ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

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Tilda Publishing

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Study of the influence of binders on the characteristics
of compacted activated carbon material

I. N. Shubin

The paper presents the results of the conducted studies of the physical and structural characteristics of the compacted activated carbon material using various binders (polyvinyl alcohol (PVS), polyvinyl acetate (PVA), basalt fiber (BF)). At the first stage of the research, high-temperature alkaline activation of the carbon material was carried out at 400 – 750 °C for 2 hours in an inert environment, then its compaction — including step heating at 75 – 190 °C, pressing at 1.5 – 7.5 kN for 3 – 210 minutes with various binders, and then — preparation of experimental samples, consisting in sampling from various parts of the blocks obtained during compaction. At the second stage, studies were carried out — specific surface and porosity on the analytical complex Altamira Instruments Top 200 and sorption capacity for removing molecules of the dye “methylene blue” (MS) using a spectrophotometer PE-5400VI. As a result of the studies, the following results were obtained: the specific surface area was 685 – 1390, 570 – 735, 483 – 532 m2/g, porosity 0.31 – 0.7, 0.21 – 0.35, 0.17 – 0.29 cm3/g, sorption capacity 1450 – 1700, 1104 – 1415, 1032 – 1512 mg/g for samples with PVS, PVA and BV binders, respectively. A nonlinear effect of the binding components on the physical and structural characteristics of the studied materials was established in their volume, which suggests the need for additional research and a more careful selection of binding components for their practical use.

Keywords: activated carbon material, functional material, compaction, diagnostics of characteristics.

DOI: 10.30791/1028-978X-2025-12-5-12

Reference citing:
Shubin I.N. Issledovanie vliyaniya svyazuyushchih komponentov na harakteristiki kompaktirovannogo aktivirovannogo uglerodnogo materiala [Study of the influence of binders on the characteristics of compacted activated carbon material]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 12, pp. 5 – 12. DOI: 10.30791/1028-978X-2025-12-5-12

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Ferroelectric piezoceramic materials based on alkali metal niobates

D. I. Zorin, E. V. Glazunova, I. N. Andryushina, S. I. Dudkina,
I. A. Verbenko, L. A. Reznichenko

A comparison of the properties of environmentally friendly alkaline niobate-based ferroelectric piezoceramic materials was conducted, focusing on the transition from traditional manufacturing methods to processes utilizing externally applied pressure, mechanoactivation of synthesized powders, modification of the elemental composition, and the introduction of an additional isothermal dwell time during sintering via hot pressing. Optimal processing parameters that ensure the best electrophysical properties of the materials were selected. It was concluded that the obtained results are promising for use in the development of similar materials and electronic devices based on them.

Keywords: ferroelectric piezoceramics, technology, hot pressing, electrophysical properties, mechanical strength, medical practice.

DOI: 10.30791/1028-978X-2025-12-13-19

Reference citing:
Zorin D.I., Glazunova E.V., Andryushina I.N., Dudkina S.I., Verbenko I.A., Reznichenko L.A. Segnetop'ezokeramicheskie materialy na osnove niobatov shchelochnyh metallov [Ferroelectric piezoceramic materials based on alkali metal niobates]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 12, pp. 13 – 19. DOI: 10.30791/1028-978X-2025-12-13-19

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Study of the influence of modified SiO2 on the tribological properties of a polymer composite material based on polytetrafluoroethylene

N. P. Sivtseva-Gladkina, V. I. Fedoseeva, A. M. Spiridonov, A. A. Okhlopkova

In this work, the wear characteristics of polymer composite materials based on polytetrafluoroethylene filled with modified silicon oxide were established. The effect of ion-exchange modification of silicon oxide with aluminum cations from aqueous solutions on the surface activity of the filler in the processes of forming polymer composite materials was studied. The textural characteristics of silicon oxide before and after modification were determined using the low-temperature nitrogen adsorption method. Scanning electron microscopy was used to study images of friction surfaces of polymer composite materials to explain the increase in their performance characteristics, and the elemental composition of the filler before and after treatment was determined. The friction surfaces of samples after tribological tests were studied using infrared spectroscopy. It is shown that aluminum cations promote the intensification of tribooxidative reactions in the process of frictional wear of polymer composite materials with a modified filler, followed by structuring of the surface layers with the formation of secondary structures on the friction surface, which leads to an increase in the wear resistance of the material several times compared to a polymer composite material filled with unmodified silicon oxide.

Keywords: polytetrafluoroethylene, silicon oxide, adsorption, polymer composite materials, tribotechnical characteristics.

DOI: 10.30791/1028-978X-2025-12-20-29

Reference citing:
Sivtseva-Gladkina N.P., Fedoseeva V.I., Spiridonov A.M., Okhlopkova A.A. Vliyanie modificirovannogo SiO2 na tribologicheskie svojstva polimernogo kompozicionnogo materiala na osnove politetraftoretilena [Study of the influence of modified SiO₂ on the tribological properties of a polymer composite material based on polytetrafluoroethylene]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 12, pp. 20 – 29. DOI: 10.30791/1028-978X-2025-12-20-29

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Influence of the amount of plasticiser in the epoxy binder, annealing and fiberglass tension on the mechanical properties of the epoxy resin composite

K. A. Drachev, A. V. Kazarbin, V. I. Rimlyand

The paper investigates the effect of the amount of plasticiser in the epoxy binder, annealing and fiberglass tension on the results of mechanical tests of fiberglass-reinforced composite specimens in accordance with GOST 11262-2017. Measurements of the dependence of mechanical stress on strain were carried out using a measuring complex Time WDW-50E. During the measurements, a video file of the tensile process of the specimens was recorded. The specimens were made on the basis of ED-20 epoxy resin binder with the addition of diethylene glycol plasticiser in the amount from zero to 50 %. The values of Young’s modulus and tensile strength were obtained. It is shown: addition of plasticiser and annealing of fiberglass does not lead to significant change in strength and modulus of elasticity of samples; formation of cracks in matrix does not occur in tests of stretching of composite samples at addition of plasticiser more than 20 %; pre-stressing of reinforcing fibre increases modulus of elasticity and tensile strength of investigated samples by 10 – 20 %. The calculated values of the matrix and fibre elasticity coefficients allow to explain the elastic properties of reinforced samples of different composition. The video recording of the tensile process of the composite specimens allowed the control of the process.

Keywords: epoxy resin, plasticizer, fiberglass, mechanical properties, measurements, samples.

10.30791/1028-978X-2025-12-30-38

Reference citing:
Drachev K.A., Kazarbin A.V., Rimlyand V.I. Vliyaniya kolichestva plastifikatora, otzhiga i natyazheniya steklovolokna na mekhanicheskie svojstva kompozita na osnove epoksidnoj smoly [Influence of the amount of plasticiser in the epoxy binder, annealing and fiberglass tension on the mechanical properties of the epoxy resin composite]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 12, pp. .30 – 38. DOI: 10.30791/1028-978X-2025-12-30-38

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

The effect of aluminum on the physico-mechanical properties and corrosion resistance
of medium-entropy Al-Co-Fe-Cr-Mo-W alloys

M. A. Kudashev, A. Yu. Ivannikov, A. B. Mikhailova, V. S. Yusupov

The paper considers the effect of aluminum on density, compressive strength, and corrosion resistance in 3.5% aqueous NaCl solution of a sintered medium-entropy (0, 2.5, 5)Al – 20Co – Fe – 30Cr – 3Mo – 2W alloy. It is revealed that the alloy is alloyed with aluminum by 5 wt.% helps to reduce the density from 8.1 to 7.1 g/cm3, while reducing the specific compressive strength from 118 to 103 (MPa·cm3)/g. At the same time, increased corrosion resistance is ensured, since the corrosion current density decreases from 117.7 to 25.6 µA/cm2, and the passivation area is significantly expanded.

Keywords: medium-entropy alloys, sintering, aluminum, density, strength, corrosion resistance.

DOI: 10.30791/1028-978X-2025-12-39-44

Reference citing:
Kudashev M.A., Ivannikov A.Yu., Mikhailova A.B., Yusupov V.S. Vliyanie alyuminiya na fiziko-mekhanicheskie svojstva i korrozionnuyu stojkost' sredneentropijnyh Al – Co – Fe – Cr – Mo – W splavov [The effect of aluminum on the physico-mechanical properties and corrosion resistance of medium-entropy Al-Co-Fe-Cr-Mo-W alloys]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 12, pp. 39 – 44. DOI: 10.30791/1028-978X-2025-12-39-44

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Synthesis of preceramic aluminoimine precursor
for stereolithographic 3d-printing of aluminum nitride ceramics

N. V. Leontiev, D. S. Larionov, P. V. Evdokimov, V. I. Putlayev

A preceramic precursor based on the adduct of diisobutylalumnum hydride and acrylonitrile have been synthesized and tested for the preparation of aluminum nitride ceramics by stereolithographic 3D printing. It was found that the interaction of diisobutylaluminum hydride with acrylonitrile leads to the formation of an imine adduct, as well as substitution products of the isobutyl moiety on the acrylonitrile molecule. By photopolymerization of the polymer precursor based on aluminoimine and 1,6-hexanediol diacrylate a macroporous aluminum nitride ceramic was formed. The formation of aluminum nitride at temperatures from 1000 °C was confirmed by X-ray phase analysis and thermogravimetric studies, the most intense mass loss was registered up to 1100 °C, in the range of 300 – 500 °C the removal of products of thermolysis of diacrylate was observed. The considerable mass loss (78 %), inherent to the pre-ceramic precursors, and the accompanying linear shrinkage remain challenges. The significant reduction in linear dimensions did not lead to a disruption of the macroporous structure of the printed item, although residual carbon was observed in the sintered ceramics. The obtained results demonstrate the potential use of aluminoimines and their alazane oligomerization products for creating ceramics through stereolithography, additional research and optimization of the technology are required to achieve low shrinkage values during sintering and to reduce the amount of residual carbon.

Keywords: ceramics, aluminum nitride, pre-ceramic precursor, alumoimines, stereolithographic 3D printing.

DOI: 10.30791/1028-978X-2025-12-45-52

Reference citing:
Leontiev N.V., Larionov D.S., Evdokimov P.V., Putlayev V.I. Sintez predkeramicheskogo alyumoiminovogo prekursora dlya stereolitograficheskoj 3d-pechati alyumonitridnoj keramiki [Synthesis of preceramic aluminoimine precursor for stereolithographic 3d-printing of aluminum nitride ceramics]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 12, pp. 45 – 52. DOI: 10.30791/1028-978X-2025-12-45-52

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Study of rheological characteristics of zirconium dioxide suspension for gel casting

E. A. Shokodko, A. I. Sitnikov, A. V. Shokodko, S. S. Strelnikova,
A. S. Chernyavskii, K. A. Solntsev

The paper presents the results of studies on the rheological characteristics and optimization of the composition of a suspension based on zirconium dioxide for the gel casting technology. In the experiments, commercial zirconium dioxide powder was used, partially stabilized with 3 mol% yttrium oxide and doped with 0.25 wt % aluminum oxide. To obtain the polyacrylamide gel, the following monomers were used: acrylamide and N,N-methylenebisacrylamide. Compositions with different contents of Dolapix CE 64 dispersant and zirconium dioxide powder were produced. Using the electroacoustic spectroscopy, the average particle size of the ceramic suspension was determined to be 0.056 µm. It was found that with this particle size the system is stable enough for castings. The influence of pH, dispersant content on the zeta potential of the ceramic suspension was investigated. The influence of pH, dispersant content and ZrO2 powder concentration on the viscosity of the suspension was investigated. Optimal ranges of pH values and Dolapix CE 64 content have been determined. A During the experiment, an increase in the content of zirconium dioxide powder ZrO2 to 38 vol. % was achieved while maintaining satisfactory casting properties of the suspension: low viscosity, resistance to flocculation, low particle settling rate.

Keywords: technical ceramics, zirconium dioxide, gel casting, rheological properties of suspensions.

DOI: 10.30791/1028-978X-2025-12-53-59

Reference citing:
Shokodko E.A., Sitnikov A.I., Shokodko A.V., Strelnikova S.S., Chernyavskii A.S., Solntsev K.A. Issledovanie reologicheskih harakteristik suspenzii dioksida cirkoniya dlya gelevogo lit'ya [Study of rheological characteristics of zirconium dioxide suspension for gel casting]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 12, pp. 53 – 59. DOI: 10.30791/1028-978X-2025-12-53-59

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Study of microstructural changes in the volume of polyimide films under the influence of а laser with a wavelength of 1.06 μm

E. V. Matveev, A. I. Gaidar, B. A. Lapshinov, V. V. Berestov

The paper presents the results of studies of microstructural changes occurring in PM-A polyimide films with a thickness of 100 and 200 μm during raster scanning of a 7 x 7 mm surface area with an Nd:YAG laser (wavelength 1.06 μm) in pulse mode. The changes in the morphology of the surface of the films, as well as their internal structure, are shown under the influence of various laser treatment modes. The stages of swelling on the film surface are shown, and characteristic types of destruction were identified. It is shown that the formation of pores in the film thickness is associated with the presence of impurity inclusions containing Si and F. Thresholds of dynamic energy density have been established at which bulges begin to form on the surface of films with thicknesses of 100 and 200 μm. The dependences of the area, density, and average size of the bulges on the front and back surfaces of polyimide films with a thickness of 100 and 200 μm on the average laser radiation power (1.60–4.75 W) at pulse repetition rates of 3, 4, and 5 kHz and scanning speeds of 3, 7, and 10 cm/s were determined.

Keywords: polyimide film, line-by-line laser scanning, surface modification, scanning electron microscopy.

DOI: 10.30791/1028-978X-2025-12-60-72

Reference citing:
Matveev E.V., Gaidar A.I., Lapshinov B.A., Berestov V.V. Issledovanie mikrostrukturnyh izmenenij v ob"eme poliimidnyh plenok pri vozdejstvii lazera s dlinoj volny 1,06 mkm [Study of microstructural changes in the volume of polyimide films under the influence of а laser with a wavelength of 1.06 μm]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 12, pp. 60 – 72. DOI: 10.30791/1028-978X-2025-12-60-72

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Determination of impurities in isotopically enriched tetrakis(trifluorophosphine) nickel (58Ni(PF3)4) using gas chromatography-mass-spectrometry

A. Yu. Sozin, O. Yu. Chernova, T. G. Sorochkina, D. M. Zimina, O. Yu. Troshin, A. D. Bulanov

For the first time, the impurity composition of isotopically enriched tetrakis(trifluorophosphine) nickel 58Ni(PF3)4 was studied by the method of gas chromatography-mass-spectrometry. To separate impurities, the possibilities of using GS-GasPro 60 m × 0.32 mm capillary columns with silica gel as a sorbent and DB-5MS 30 m × 0.32 mm × 0.25 μm with methylsiloxane were studied. Impurities were identified by comparing their mass spectra with those known from the literature. Impurities of permanent gases, a number of hydrocarbons from C1 to C9, dichloromethane, 1-propene-1-(2-furanyl) and an alkyl derivative of tetrakis(trifluorophosphine) nickel were identified. Their concentrations were determined. The detection limits of impurities at the level of 9·10–5 – 4·10–6 vol. %. For the first time, the mass spectrum of Ni(PF3)3(PF2CH3), which is absent from literature sources, was obtained and described.

Keywords: tetrakis(trifluorophosphine) nickel, isotopes, impurities, identification, mass- spectra, gas chromatography-mass spectrometry.

DOI: 10.30791/1028-978X-2025-12-73-79

Reference citing:
Sozin A.Yu., Chernova O.Yu., Sorochkina T.G., Zimina D.M., Troshin O.Yu., Bulanov A.D. Opredelenie primesej v izotopno obogashchennom tetrakis(triftorfosfin) nikele (58Ni(pf3)4) metodom hromato-mass-spektrometrii [Determination of impurities in isotopically enriched tetrakis(trifluorophosphine) nickel (⁵⁸Ni(PF₃)₄) using gas chromatography-mass-spectrometry]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 12, pp. 73 – 79. DOI: 10.30791/1028-978X-2025-12-73-79