Tilda Publishing

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

PERSPEKTIVNYE
MATERIALY

Tilda Publishing

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

2025, № 10

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Deposition of AlQ3 thin films with detectable crystallinity without postprocessing

A. I. Koptyaev, G. L. Pakhomov

Thin films of tris-(8-hydroxyquinolinate) aluminum, AlQ3, were obtained by thermal evaporation at residual pressure of ~ 10–4 Pа on substrates with different temperatures. When the temperature difference between the source and the substrate is 40 degrees, a polycrystalline film grows, without post-annealing or solvent vapor treatment. At the substrate temperature of 100 °C, dendritic objects of several microns in size are formed in the AlQ3 film on a continuous sublayer. At lower deposition temperatures, the films are amorphous and have the usual fine-grained structure. Crystallization affects the electrophysical properties of AlQ3 films. The development of this technique will make it possible to obtain functional structures (multilayer, hybrid, etc.) with an AlQ3 crystal layer in a standard vacuum process.

Keywords: AlQ3, vacuum thermal deposition, thin films, structure, conductivity.

DOI: 10.30791/1028-978X-2025-10-5-12

Reference citing:
Koptyaev A.I., Pakhomov G.L. Poluchenie tonkih plenok AlQ3 s detektiruemoj kristallichnost'yu bez postprocessinga [Deposition of AlQ₃ thin films with detectable crystallinity without postprocessing]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 10, pp. 5 – 12. DOI: 10.30791/1028-978X-2025-10-5-12

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Magnetoreological polishing of KDP crystals surface

D. V. Belov, S. N. Belyaev, N. A Sorokoletova, E. I. Serebrov

Magnetorheological polishing technology is widely used in surface treatment of high-precision nonlinear optical elements used for manufacturing high-precision laser technology. In this work, the magnetorheological finishing (magnetorheological polishing) of the surface of water-soluble crystals of potassium dihydroorthophosphate (KDP) was studied. A nano abrasive based on amorphous silicon dioxide, obtained by modified sol-gel synthesis, was introduced into the composition of the magnetorheological suspension. The advantages of the developed method of magnetorheological polishing of the surface of KDP single crystals are the possibility of processing large-aperture samples, as well as achieving high-quality surface treatment. The final polishing of the surface of KDP single crystals with SiO2 nanoabrasive provided a roughness value of no more than 0.6 nm.

Keywords: magnetorheological finishing, magnetorheological polishing, magnetorheological suspension, smart material, surface, roughness, nanoabrasive, single crystal, potassium dihydroorthophosphate, KDP, nonlinear optical elements, SiO2, organozole, sol-gel method.

DOI: 10.30791/1028-978X-2025-10-13-26

Reference citing:
Belov D.V., Belyaev S.N., Sorokoletova N.A, Serebrov E.I. Magnitoreologicheskoe polirovanie poverhnosti kristallov kaliya digidroortofosfata [Magnetoreological polishing of KDP crystals surface]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 10, pp. 13 – 26. DOI: 10.30791/1028-978X-2025-10-13-26

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Constants of hyperelastic models

S. A. Muslov, A. I. Lotkov

A comparison was made of the numerical values of the constants of hyperelastic models of soft biological tissues. The hyperelastic models most often found in the literature are considered: neohookean, Mooney – Rivlin, Ogden, polynomial, Yeoh and Veronda – Westmann and biological tissues of the myocardium, aorta, aortic valve, vena cava, multilayer structure of the fundus wall, body and antrum of the stomach, wall common bile duct, oral mucosa, gums, periodontal ligament, fibrous capsule and parenchyma of the kidney, ureter, Lieto’s triangle and body of the bladder, uterus, vagina, umbilical cord, skin of the face and back, periosteum and fascia of the nose, hair and nail plate. A very strong scatter in the numerical values of the permanent organ tissues studied was established. The lowest coefficient of variation CV of the numerical values of the parameters of hyperelastic models was demonstrated by the Ogden model (2.06 for the constant μ and 0.77 for α), the largest — by the Yeoh model (15.47 for the constant C3) and the polynomial model (8.63 for the constant C02 and 7.6 for the constant C11, respectively). Based on constant models and their combinations, the shear moduli of tissues in the undeformed state were calculated.

Keywords: hyperelastic material models, elastic constants, shear modulus, biological tissues

10.30791/1028-978X-2025-10-27-33

Reference citing:
Muslov S.A., Lotkov A.I. Uprugie postoyannye modelej giperuprugih materialov [Constants of hyperelastic models]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 10, pp. 27 – 33. DOI: 10.30791/1028-978X-2025-10-27-33

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Sorption of phenol by highly porous carbon materials
based on vegetable waste from rapeseed processing

D. A. Badin, S. O. Rybakova, A. N. Timirgaliev, O. A. Ananyeva,
I. V. Burakova, A. E. Burakov

The paper is studied liquid-phase adsorption of aromatic organic compound, phenol, on biochar from vegetable wastes of rape processing. Sorption materials were obtained by hydrothermal carbonization of rape meal (R/HTC) (Tambov region) followed by carbonization (R/HTC/C) and alkaline activation (R/HTC/C/KOH). The post-treatment of HTC coal allows to open the porous space of the carbon framework due to the removal of amorphous organics and formation of defects in the structure of the material. As a result of adsorption studies, it was found that the absorption time of phenol is different for the materials: for activated material within 10 min; for R/HTC and R/HTC/C — within 60 min. Meanwhile, the experimental sorption capacity for phenol was 298 mg/g for R/HTC, 1236 mg/g for R/HTC/C and 1309 mg/g for R/HTC/C/KOH. To determine the adsorption mechanism, the kinetic experimental data were processed in the coordinates of the pseudo-first- and -second-order, Elovich, and internal diffusion models, and the isothermal data were processed in the coordinates of the Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich models. The kinetics on all materials are described by a pseudo-second-order equation with a contribution from diffusive uptake of phenol. The Elovich model confirms the presence of chemical heterogeneity of the R/HTC sorbent surface. The maximum adsorption capacity according to the Langmuir model was 434.8 mg/g for R/HTC, 1429 mg/g for R/HTC/C and 1667 mg/g R/HTC/C/KOH. The parameters of the Dubinin-Radushkevich model allow us to conclude that the interaction between the active centers of the sorbent and phenol is physical in nature.

Keywords: biochar, hydrothermal carbonization, alkaline activation, rapeseed, adsorption, phenol, kinetics, isotherm.

DOI: 10.30791/1028-978X-2025-10-34-46

Reference citing:
Badin D.A., Rybakova S.O., Timirgaliev A.N., Ananyeva O.A., Burakova I.V., Burakov A.E. Sorbciya fenola vysokoporistymi uglerodnymi materialami na osnove rastitel'nyh othodov pererabotki rapsa [Sorption of phenol by highly porous carbon materials based on vegetable waste from rapeseed processing]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 10, pp. 34 – 47. DOI: 10.30791/1028-978X-2025-10-34-46

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Investigation of fatigue strength of fine-grained austenitic steel 08Cr18Ni10Ti
obtained by Rotary Swaging

О. A. Belkin, M. K. Chegurov, V. I. Kopylov, D. A. Zotov, K. Е. Smetanina,
N. N. Berendeev, A. N. Sysoev, A. V. Nokhrin

The object of the study was stainless steel 08Cr18Ni10Ti, a two-phase ultrafine-grained (UFG) structure in which it was formed by Rotary Swaging (RS) at room temperature. Bars with a diameter of 6 mm have an uneven hardness distribution in the cross section of the bar; maximum hardness values are observed in the center of the bar. The formation of TiC particles is observed in the annealing temperature range of 450 – 550 °C; the reverse transformation of martensite into austenite occurs in the temperature range of 550 – 650 °C, and recrystallization processes occur at annealing temperatures of more than 700 °C. Fatigue tests of smooth cylindrical samples according to the bending with rotation scheme were carried out at room temperature at a frequency of 50 Hz. Fractographic analysis of the fractures was performed by scanning electron microscopy. Fatigue curves were analyzed using the Basquin power equation: sa = A·N–k. It is shown that RS and annealing lead to a decrease in the coefficient A in the Basquin equation. It has been established that coarse-grained and UFG steel have the same fatigue limit: the physical fatigue limit based on 107 cycles is 500 – 550 MPa; and the relative fatigue limit calculated using the Basquin equation based on 108 cycles is σ–1 = 150 – 155 MPa. It is shown that the dependence of σ–1 on the annealing temperature has a non-monotonic character, with a maximum. The results of fatigue tests were analyzed using a model of plastic deformation at the crack tip.

Keywords: austenitic steel, 08Cr18Ni10Ti, rotary swaging, fatigue.

DOI: 10.30791/1028-978X-2025-10-47-65

Reference citing:
Belkin О.A., Chegurov M.K., Kopylov V.I., Zotov D.A., Smetanina K.Е., Berendeev N.N., Sysoev A.N., Nokhrin A.V. Issledovanie ustalostnoj prochnosti melkozernistoj austenitnoj stali 08H18N10T poluchennoj metodom rotacionnoj kovki [Investigation of fatigue strength of fine-grained austenitic steel 08Cr18Ni10Ti obtained by Rotary Swaging]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 10, pp. 47 – 65. DOI: 10.30791/1028-978X-2025-10-47-65

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Friction processing of plasma layered Ni – TiС – FeNiMo – Ni coating on a cylindrical titanium substrate

V. I. Kalita, D. I. Komlev, A. A. Radyuk, A. B. Mikhailova

The analysis of a microstructure and microhardness of plasma TiС-FeNiMo coating on a cylindrical titanic substrate have made after frictional processing (FP) simultaneously two tools from a fast-cutting steel at pressure to 15 MPa. Experiments have executed with rotation of the sample, 900 rpm, and moving of tools along a forming cylindrical substrate with a speed of 0,24 mm/s. Rise a coating temperature to 1123 °С at the expense of forces of a friction allows to deform a coating up to its fusion. Process of frictional processing characterised values in the linear speed of a coating at its rotation, normal and shifting pressure, friction factor, the work executed on a track and the relation of work to the area of a track. Coatings has sites with not the dense, dense and melted off microstructure and in this connection disorder of values of microhardness. At loadings on 200 G 2,78 – 9,80 GPa and at loading 20 G 3,13 – 16,81 GPa. Places of gaugings with cermet structure have average hardness at loading 200 G Н = 8,55 GPa and at loading on индентор 20 G Н = 14,09 GPa.

Keywords: frictional processing, plasma coverings, TiС-FeNiMo, a cylindrical substrate, a microstructure, microhardness

DOI: 10.30791/1028-978X-2025-10-66-77

Reference citing:
Kalita V.I., Komlev D.I., Radyuk A.A., Mikhailova A.B. Frikcionnaya obrabotka plazmennogo sloistogo Ni – TiS – FeNiMo – Ni pokrytiya na cilindricheskoj titanovoj podlozhke [Friction processing of plasma layered Ni – TiС – FeNiMo – Ni coating on a cylindrical titanium substrate]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 10, pp. 66 – 77. DOI: 10.30791/1028-978X-2025-10-66-77

ПЕРСПЕКТИВНЫЕ МАТЕРИАЛЫ

Study of deformation and destruction mechanisms of fibrous composite materials
by acoustic emission method

A. G. Penkin, I. O. Bannykh, V. I. Antipov, A. G. Kolmakov,
N. A. Minina, Yu. E. Mukhina

The mechanisms of deformation and destruction of the metallic fiber composite material “aluminum-steel” with different volume fractions of fibers and different structural states of the interphase boundary under static tension conditions were studied using the acoustic emission method. The AMG-6 alloy was used as the matrix of the aluminum-steel composite material, and the reinforcing fibers were stainless austenitic-martensitic steel EP322 wire with a diameter of 350 µm. Samples of matrix and composite material with different volume fractions of fibers, including samples with an intermetallic layer at the fiber-matrix boundary with a thickness of 20 μm, which was formed during annealing at a temperature of 470 °C, have been investigated in the work. The samples were tested for static tension at room temperature with a strain rate of 2.8·10–3 s–1 using a low-noise 10-ton Instron 3382 mechanical machine with simultaneous recording of a set of acoustic emission signal parameters in the frequency range of 20 – 1000 kHz and a dynamic range of 84 dB using the SDS1008 diagnostic system. It is found that the amplitude and energy characteristics of acoustic emission signals recorded during static stretching of composite material samples make it possible to control the kinetics of plastic deformation processes, strain hardening of the matrix material, destruction of the intermetallic compound at the interface, and the dynamics of fiber destruction. The possibility of identifying deformation mechanisms based on the analysis of spectral characteristics of acoustic emission signals during static stretching at the stages of yield, strain hardening, plastic flow and fracture of aluminum-steel composite material samples, as well as assessing the degree of influence of the structural state of the matrix-fiber interphase boundary on the nature of fiber fracture has been demonstrates in the work.

Keywords: acoustic emission, composite materials, metals, mechanical properties, static tension, failure mechanisms.

DOI: 10.30791/1028-978X-2025-10-78-88

Reference citing:
Penkin A.G., Bannykh I.O., Antipov V.I., Kolmakov A.G., Minina N.A., Mukhina Yu.E. Issledovanie mekhanizmov deformacii i razrusheniya voloknistyh kompozicionnyh materialov metodom akusticheskoj emissii [Study of deformation and destruction mechanisms of fibrous composite materials by acoustic emission method]. Perspektivnye Materialy [Advanced Materials] (in Russ), 2025, no. 78 – 88. DOI: 10.30791/1028-978X-2025-10-78-88