Russian Physics Journal最新文献_第9页

Deformation and deterioration of C235 steel contact layer in dry sliding against C45 steel under high density alternating current 高密度交流电作用下C235钢与C45钢干滑动接触层的变形与劣化

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-05-14 DOI: 10.1007/s11182-025-03442-y

M. I. Aleutdinova, V. V. Fadin

{"title":"Deformation and deterioration of C235 steel contact layer in dry sliding against C45 steel under high density alternating current","authors":"M. I. Aleutdinova, V. V. Fadin","doi":"10.1007/s11182-025-03442-y","DOIUrl":"10.1007/s11182-025-03442-y","url":null,"abstract":"<div>The paper studied the tribological behavior of the C235 steel under high-density electric current density over 100 A/cm2. It was shown that dry sliding of steel against steel under electric current, induced plastic flow in the contact layer ~75 μm thick beyond the nominal contact area in and against the sliding direction. It was supposed that the surface waves induced plastic flow. These waves could be excited by numerous mechanical and electrical pulses arising in meeting the surface microroughness. Sliding wear did not provide the material weight loss, although wear particles did appear. Moreover, the transfer layer formation was observed on the contact surface. The X‑ray phase analysis showed that it contained more than 70 vol.% FeO. The sliding surface morphology on the nominal contact area consisted of two regions, one of them having melting traces. It was assumed that high self-induction pulses appeared in the contact area and caused high-density displacement currents. The latter directly affected FeO ions and transferred them to the melt. Numerous discharge traces were observed in the melting zone. Dry contact spots were detected also. That confirmed that the current passed through the melt and contact spots in the form of discharges.</div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 3","pages":"369 - 375"},"PeriodicalIF":0.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145143329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimization of lattice structures using neural networks and numerical simulations based on FEM 网格结构的神经网络优化与有限元数值模拟

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-05-13 DOI: 10.1007/s11182-025-03461-9

I. A. Podpruzhnikov, A. V. Vershinin, V. A. Levin, K. M. Zingerman

{"title":"Optimization of lattice structures using neural networks and numerical simulations based on FEM","authors":"I. A. Podpruzhnikov, A. V. Vershinin, V. A. Levin, K. M. Zingerman","doi":"10.1007/s11182-025-03461-9","DOIUrl":"10.1007/s11182-025-03461-9","url":null,"abstract":"<div>The effects occurring in the cases where the acoustic waves generated by a pulsed source are applied to linearly elastic solids formed by a periodic lattice structure are examined. For a series of numerical experiments based on the finite element method, various types of lattice structures are modeled in the CAE Fidesys. In these lattice structures, the parameters of the undulation of the bars forming the lattice structure, the frequency of the applied pulse, and the distance at which the sound insulation level is measured, are varied. A number of points forming the cells of the lattice structure are also varied. The presence of frequency filtering is established for some of these variable parameters. An analysis of the relationships of variable parameters and sound insulation level is made. Using a series of virtual experiments, a model predicting the level of sound insulation is built based on a neural network. This algorithm is configured using the Python programming language and the scikit-learn library. The use of this algorithm allows reduce the time for calculating the sound insulation level by a factor of hundreds.</div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 3","pages":"532 - 539"},"PeriodicalIF":0.4,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145143522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study of phase transitions in α-Fe2O3 during mechanical grinding in a high-energy ball mill 高能球磨机机械磨削α-Fe2O3相变研究

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-05-13 DOI: 10.1007/s11182-025-03448-6

V. D. Elkin, E. N. Lysenko, V. A. Vlasov, A. P. Surzhikov, Yu. V. Knyazev

{"title":"Study of phase transitions in α-Fe2O3 during mechanical grinding in a high-energy ball mill","authors":"V. D. Elkin, E. N. Lysenko, V. A. Vlasov, A. P. Surzhikov, Yu. V. Knyazev","doi":"10.1007/s11182-025-03448-6","DOIUrl":"10.1007/s11182-025-03448-6","url":null,"abstract":"<div>The phase transformations, taking place in α−Fe2O3 during its mechanical grinding in an AGO-2C planetary ball mill with an aim to manufacture a Fe3O4-based magnetic powder, are studied. The grinding is performed using steel vials and balls under different modes, grinding times (up to 120 min), mill rotation frequencies (1290, 1820, 2220 rpm), processing media (water, isopropyl alcohol, dry grinding in air), degree of filling vials with balls and powder (from 1/12 to 2/3 of vial volume), and ball-to-powder mass ratios (from 2.5:1 to 20:1). It is shown that different grinding modes strongly affect the−Fe2O3→Fe3O4 phase transition, resulting in different phase concentration ratios in the milled powder. It is noted that the magnetite concentration increases with the grinding energy density, which depends on the rotation frequency and grinding time. The most effective modes of the Fe3O4-based nanostructured powder manufacture are established, which involve the maximum rotation frequency, the grinding time up to 120 min, and the ball-to-powder ratio 10:1. The magnetic powder thus produced has the Curie temperature of 556 °C and the saturation magnetization of 65 emu/g.</div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 3","pages":"414 - 424"},"PeriodicalIF":0.4,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145143526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Method for calculating the point spread function for the ultrasonic imaging of multi-layered objects with total focusing method 用全聚焦法计算多层物体超声成像点扩展函数的方法

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-05-12 DOI: 10.1007/s11182-025-03462-8

D. O. Dolmatov

引用次数: 0

Structure and properties of titanium and titanium oxide films formed on a substrate by vacuum-arc plasma-assisted method 用真空弧等离子体辅助法在衬底上形成的钛和氧化钛薄膜的结构和性能

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-05-12 DOI: 10.1007/s11182-025-03444-w

N. A. Prokopenko, E. A. Petrikova, M. S. Petyukevich, O. S. Tolkachov, N. N. Koval, Yu. F. Ivanov

{"title":"Structure and properties of titanium and titanium oxide films formed on a substrate by vacuum-arc plasma-assisted method","authors":"N. A. Prokopenko, E. A. Petrikova, M. S. Petyukevich, O. S. Tolkachov, N. N. Koval, Yu. F. Ivanov","doi":"10.1007/s11182-025-03444-w","DOIUrl":"10.1007/s11182-025-03444-w","url":null,"abstract":"<div>The paper presents an analysis of the results of a study on the structure and properties of thin films of titanium oxides (2–3 μm thick) deposited on the surfaces of Ti–6Al–4V titanium alloy and HG40 hard alloy samples using vacuum-arc plasma-assisted technique. It has been found that the deposition of both titanium and titanium oxide films results in the formation of particle droplet fractions the characteristics (the average, minimum, and maximum sizes and the number of particles per unit surface area) of which depend on the value of the “PINK” discharge current. The formed films are shown to be a single-phase material containing titanium dioxide (TiO2) in two modifications: rutile and anatase. The relative content of these two modifications in the film was found to depend on the discharge current value (Ip). It has been established that titanium and titanium oxide films have a columnar structure. The columns are formed by crystallites the dimensions of which are (3.1–5.4) nm in the titanium film and (18.3–20.5) nm in the titanium oxide film. It has been revealed that the maximum microhardness value of the film (TiO2)/(Ti–6Al–4V) substrate system is 9.5 GPa at Ip = 0 A. This value is more than twice the microhardness of the Ti–6Al–4V alloy. Additionally, the specific wear rate k, which is the inverse of the wear resistance, reaches a minimum value of 1.9·10−7 mm3/(N·m) at Ip = 0 A, and this value is more than 250 times lower than the wear parameter of Ti–6Al–4V. For the same spraying mode, the friction coefficient of the film is 0.43, which is 1.6 times less than the friction coefficient of the VT6 alloy and 1.3 times less than the friction coefficient of the titanium film.</div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 3","pages":"383 - 391"},"PeriodicalIF":0.4,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145143641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fast shear wave dynamics of a 3D-printed acrylonitrile-butadiene-styrene sample 3d打印丙烯腈-丁二烯-苯乙烯样品的快速剪切波动力学

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-05-12 DOI: 10.1007/s11182-025-03447-7

A. Volodarskii, E. Morokov, N. Odina, A. Kokshaiskii, A. Korobov

引用次数: 0

Application of X-ray diffractometry and simultaneous thermal analysis for studying the phase composition of barium ferrites 应用x射线衍射和同步热分析研究钡铁氧体的物相组成

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-05-12 DOI: 10.1007/s11182-025-03452-w

S. A. Bobuyok, A. P. Surzhikov, E. V. Nikolaev, V. A. Vlasov, E. N. Lysenko

{"title":"Application of X-ray diffractometry and simultaneous thermal analysis for studying the phase composition of barium ferrites","authors":"S. A. Bobuyok, A. P. Surzhikov, E. V. Nikolaev, V. A. Vlasov, E. N. Lysenko","doi":"10.1007/s11182-025-03452-w","DOIUrl":"10.1007/s11182-025-03452-w","url":null,"abstract":"<div>Unsubstituted and complex substituted barium ferrites of a magnetoplumbite structure of the following compositions: BaFe12O19, BaFe11.8Al0.2O19, BaZn0.2Zr0.2Fe11.6O19 and BaZn0.2Zr0.2Al0.2Fe11.4O19 are studied. The main focus is on their phase compositions and magnetic phase transitions within the Curie temperature interval. The common patterns of variation in the ferrite crystal lattice volume as a function of the substituting cation sizes are revealed. During a simultaneous thermal analysis in the magnetic field, a correlation is observed between the instrumental variation of the sample weight and the changes of their heat capacity in the Curie temperature region. It is found out that the temperature range of the magnetic phase transition increases with the increasing content of the elements substituting iron atoms, while the Curie temperature decreases. It is shown that a thermal analysis allows effectively separating the phases in the mixture of composite powders of BaFe12O19—BaZn0.2Zr0.2Al0.2Fe11.4O19, not possible using X‑ray diffraction due to very small differences in the crystal lattice parameters of these two ferrite phases, causing an overlapping of their peaks in the XRD pattern. The results of this study emphasize the importance of using the simultaneous thermal analysis during the examination of phase compositions of multicomponent magnetic materials.</div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 3","pages":"452 - 460"},"PeriodicalIF":0.4,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145143343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal stability of V–W–Cr–Zr alloy after high-pressure torsion 高压扭转后V-W-Cr-Zr合金的热稳定性

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-05-12 DOI: 10.1007/s11182-025-03443-x

I. V. Smirnov, I. A. Ditenberg, V. I. Tolstikhin

{"title":"Thermal stability of V–W–Cr–Zr alloy after high-pressure torsion","authors":"I. V. Smirnov, I. A. Ditenberg, V. I. Tolstikhin","doi":"10.1007/s11182-025-03443-x","DOIUrl":"10.1007/s11182-025-03443-x","url":null,"abstract":"<div>Complex studying of thermal stability of the V–W–Cr–Zr alloy is studied after plastic deformation under torsion at high pressure. Methods of scanning and transmission electronic microscopy are used to study the influence of the temperature on the characteristics of grain, defective, and heterophase structures. A comparison of the results of structural attribution with microhardness values has allowed the main temperature intervals of realization of relaxation processes to be elucidated. It has been established that under the influence of the temperature, the processes of heterophase structure transformations are the main factors determining the thermal stability of the V–W–Cr–Zr alloy. The presence of finely dispersed particles of the second phases promotes preservation of an anisotropic submicrocrystalline state and high microhardness values up to 700 °C. Beginning at 800 °C, the coagulation of particles leads to partial unblocking of dislocation substructures accompanied by the return processes and primary recrystallization gradually encompassing the entire volume of the material. Secondary recrystallization comes to the end at 1100 °C. The relaxation processes in the temperature interval from 800 to 1100 °C are accompanied by the reduction of microhardness values, the character of change of which is determined by the Hall–Petch relation taking into account the joint disperse and grain-boundary hardening.</div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 3","pages":"376 - 382"},"PeriodicalIF":0.4,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145143338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Kinetics of changes in the optical properties of polymethylphenylsiloxane varnish modified with silicone dioxide nanoparticles under electron irradiation 电子辐照下二氧化硅纳米颗粒改性聚甲基苯基硅氧烷清漆光学性能变化动力学

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-05-12 DOI: 10.1007/s11182-025-03459-3

M. M. Mikhailov, V. A. Goronchko, A. N. Lapin, S. A. Yuryev, D. S. Fedosov, S. P. Ivanichko

引用次数: 0

Composite gas sensors based on carbon and tin oxide nanoparticles 基于碳和氧化锡纳米颗粒的复合气体传感器

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-05-12 DOI: 10.1007/s11182-025-03456-6

A. I. Bogomolova, T. I. Gareev, O. A. Nerushev, D. V. Sorokin, A. G. Bannov, D. V. Smovzh

引用次数: 0