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Synthesis of SiC in an Electric Arc Argon Plasma 电弧氩等离子体中碳化硅的合成
IF 1.1 4区 物理与天体物理
Technical Physics Pub Date : 2025-03-15 DOI: 10.1134/S106378422470107X
E. A. Erlingaite, N. G. Andreeva, A. V. El’chishcheva, R. R. Shaikhattarov, I. G. Galeev, B. A. Timerkaev
{"title":"Synthesis of SiC in an Electric Arc Argon Plasma","authors":"E. A. Erlingaite,&nbsp;N. G. Andreeva,&nbsp;A. V. El’chishcheva,&nbsp;R. R. Shaikhattarov,&nbsp;I. G. Galeev,&nbsp;B. A. Timerkaev","doi":"10.1134/S106378422470107X","DOIUrl":"10.1134/S106378422470107X","url":null,"abstract":"<p>An experimental setup that consists of a vacuum chamber, vacuum pump, power source, pressure gage to measure the pressure in the chamber, ballast resistor, and gas delivery system has been constructed, and the process of SiC growth in an argon arc discharge has been studied. Appropriate process conditions have been selected, and experiments on SiC synthesis have been carried out in the vacuum chamber in an argon atmosphere at a pressure of 350−500 Torr. The grown material has been examined under optical and scanning electron microscopes. It has been reliably established that the presented approach provides the synthesis of SiC nano- and microparticles with a diamond-like structure.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":"69 11","pages":"2616 - 2619"},"PeriodicalIF":1.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629746","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
Nonuniformity of Temperature Distributions of Flue Gas Temperature over the Depth of a Tube Furnace 管式炉烟气温度分布的不均匀性
IF 1.1 4区 物理与天体物理
Technical Physics Pub Date : 2025-03-15 DOI: 10.1134/S106378422470097X
A. V. Sadykov
{"title":"Nonuniformity of Temperature Distributions of Flue Gas Temperature over the Depth of a Tube Furnace","authors":"A. V. Sadykov","doi":"10.1134/S106378422470097X","DOIUrl":"10.1134/S106378422470097X","url":null,"abstract":"<p>The influence of a three-dimensional change in the parameters of flue gases on the distributions of temperatures and radiant heat fluxes in the radiant chamber of a tubular furnace is investigated. The external heat and mass transfer in the radiant chamber of the furnace is modeled by three-dimensional differential equations of energy, radiation transfer, motion, continuity, <i>k</i>–ε turbulence model, and two-step model of methane combustion. To solve the equation of radiation transfer, the method of discrete ordinates is used. Areas with the highest temperature gradients are identified.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":"69 11","pages":"2671 - 2674"},"PeriodicalIF":1.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629635","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
Spatial Characteristics of Arc Discharge Plasma in Relation to the Synthesis of Silicon Nanostructures 电弧放电等离子体的空间特性与硅纳米结构的合成
IF 1.1 4区 物理与天体物理
Technical Physics Pub Date : 2025-03-15 DOI: 10.1134/S1063784224701081
A. A. Kaleeva, B. A. Timerkaev, O. A. Petrova, A. A. Saifutdinova
{"title":"Spatial Characteristics of Arc Discharge Plasma in Relation to the Synthesis of Silicon Nanostructures","authors":"A. A. Kaleeva,&nbsp;B. A. Timerkaev,&nbsp;O. A. Petrova,&nbsp;A. A. Saifutdinova","doi":"10.1134/S1063784224701081","DOIUrl":"10.1134/S1063784224701081","url":null,"abstract":"<p>The paper presents an arc discharge model as applied to the synthesis problems of semiconductor nanostructures. The model is based on a completely nonequilibrium approximation and includes charged particle density balance equations, electron energy balance and energy balance equation for the heavy component of plasma, and Poisson’s equations for describing a self-consistent electric field. As a result of a numerical study of the system of equations describing an electric arc discharge, spatial distributions of the main characteristics of an arc discharge, such as the potential and intensity of the electric field, densities of electrons and ions, and gas temperatures were obtained.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":"69 11","pages":"2626 - 2631"},"PeriodicalIF":1.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629738","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
Periodicity of the Debye Temperature of Metals 金属德拜温度的周期性
IF 1.1 4区 物理与天体物理
Technical Physics Pub Date : 2025-03-15 DOI: 10.1134/S1063784224700993
D. V. Kosenkov, V. V. Sagadeev
{"title":"Periodicity of the Debye Temperature of Metals","authors":"D. V. Kosenkov,&nbsp;V. V. Sagadeev","doi":"10.1134/S1063784224700993","DOIUrl":"10.1134/S1063784224700993","url":null,"abstract":"<p>On the basis of the theory of dimensions, the relationship between the periodicity of the Debye temperatures of metals and integral hemispherical fluxes of thermal radiation is revealed. The periodicity of the Debye temperatures of metals is established in accordance with the position in the Periodic System.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":"69 11","pages":"2638 - 2641"},"PeriodicalIF":1.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629740","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
Experimental Stand and Methodology for Conducting Experiment to Measure the Solubility Coefficient of Supercritical Carbon Dioxide in Hydrocarbons in a Homogeneous Porous Medium 均质多孔介质中超临界二氧化碳在碳氢化合物中的溶解度系数测定实验台及方法
IF 1.1 4区 物理与天体物理
Technical Physics Pub Date : 2025-03-15 DOI: 10.1134/S1063784225700045
I. D. Zakiev, A. V. Radayev, A. A. Mukhamadiyev, A. N. Sabirzyanov
{"title":"Experimental Stand and Methodology for Conducting Experiment to Measure the Solubility Coefficient of Supercritical Carbon Dioxide in Hydrocarbons in a Homogeneous Porous Medium","authors":"I. D. Zakiev,&nbsp;A. V. Radayev,&nbsp;A. A. Mukhamadiyev,&nbsp;A. N. Sabirzyanov","doi":"10.1134/S1063784225700045","DOIUrl":"10.1134/S1063784225700045","url":null,"abstract":"<p>The article presents the results of studies of the process of oil displacement with supercritical CO<sub>2</sub> fringes and water from a low-permeable heterogeneous oil reservoir with a water content of 8% at a pressure of 8 and 12 MPa. The results show that an increase in the CO<sub>2</sub> injection pressure does not lead to an increase in the oil displacement coefficient within the experimental error. The mechanism of the process of displacing oil from a low-permeable heterogeneous reservoir is considered. The results of the experiment are processed in the form of a generalizing dependence.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":"69 11","pages":"2719 - 2725"},"PeriodicalIF":1.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629677","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 the Possibility of Using Aluminosilicates as a Foaming Filler for Sandwich Panels 硅酸盐铝用作夹芯板发泡填料的可能性研究
IF 1.1 4区 物理与天体物理
Technical Physics Pub Date : 2025-03-15 DOI: 10.1134/S1063784224701056
K. Aeraiguli, K. A. Andrianova, L. M. Amirova
{"title":"Study of the Possibility of Using Aluminosilicates as a Foaming Filler for Sandwich Panels","authors":"K. Aeraiguli,&nbsp;K. A. Andrianova,&nbsp;L. M. Amirova","doi":"10.1134/S1063784224701056","DOIUrl":"10.1134/S1063784224701056","url":null,"abstract":"<p>The paper considers the possibility of using aluminosilicate binders as a foaming aggregate for sandwich panels. The main factors influencing the foaming process (viscosity, surface tension of the compositions, as well as the time and temperature of the process) are investigated. The optimal foaming temperature and time of drying, foaming, and solidification have been determined to achieve a strong and homogeneous foam structure. Tests for the strength of the glued joint of the obtained panels have been carried out.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":"69 11","pages":"2606 - 2609"},"PeriodicalIF":1.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629742","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
Nonlinear Diagnostics of Semiconductors by Multifrequency Radiation at Low Temperatures 低温下多频辐射对半导体非线性诊断的影响
IF 1.1 4区 物理与天体物理
Technical Physics Pub Date : 2025-03-15 DOI: 10.1134/S106378422470110X
A. A. Adkhamov, F. Kholmurodov
{"title":"Nonlinear Diagnostics of Semiconductors by Multifrequency Radiation at Low Temperatures","authors":"A. A. Adkhamov,&nbsp;F. Kholmurodov","doi":"10.1134/S106378422470110X","DOIUrl":"10.1134/S106378422470110X","url":null,"abstract":"<p>Diagnostics of semiconductors by multi-frequency irradiation is a fairly effective way to determine all possible parameters of the samples. It is shown that, when a semiconductor sample cooled to low temperatures is irradiated by multi-frequency electromagnetic radiation, several variants of nonlinear scattering in the crystal plasma are possible. Nonlinear interaction of incident and reflected light waves in the region where the plasma flow velocity is close to the speed of sound can significantly reduce the efficiency of using multi-frequency pumping for deep diagnostics of semiconductor crystals with a narrow band gap at low temperatures.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":"69 11","pages":"2603 - 2605"},"PeriodicalIF":1.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629720","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
Reynolds Number as a Universal Function for Determining the Equilibrium Concentration of a Solvent–Solid System for a Flow Measurement Method 雷诺数作为确定溶剂-固体系统平衡浓度的通用函数用于流量测量方法
IF 1.1 4区 物理与天体物理
Technical Physics Pub Date : 2025-03-15 DOI: 10.1134/S1063784224701123
L. Yu. Yarullin, F. R. Gabitov, L. Yu. Sabirova, V. F. Khairutdinov, Ya. Yu. Korepanova
{"title":"Reynolds Number as a Universal Function for Determining the Equilibrium Concentration of a Solvent–Solid System for a Flow Measurement Method","authors":"L. Yu. Yarullin,&nbsp;F. R. Gabitov,&nbsp;L. Yu. Sabirova,&nbsp;V. F. Khairutdinov,&nbsp;Ya. Yu. Korepanova","doi":"10.1134/S1063784224701123","DOIUrl":"10.1134/S1063784224701123","url":null,"abstract":"<p>The paper presents the results of an experimental study of the solubility of tannin in SC-CO<sub>2</sub> on isotherms of 308 and 333 K in the pressure range from 8 to 26 MPa. The range of the Reynolds number is established at which the equilibrium concentration (solubility) of tannin in SC-CO<sub>2</sub> is ensured.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":"69 11","pages":"2684 - 2687"},"PeriodicalIF":1.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629715","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
Mechanical Properties of Composite Films Reinforced with Ceramic Tin Oxide Nanoparticles 陶瓷氧化锡纳米颗粒增强复合膜的力学性能
IF 1.1 4区 物理与天体物理
Technical Physics Pub Date : 2025-02-13 DOI: 10.1134/S1063784224700853
N. A. Bulychev, O. A. Butusova
{"title":"Mechanical Properties of Composite Films Reinforced with Ceramic Tin Oxide Nanoparticles","authors":"N. A. Bulychev,&nbsp;O. A. Butusova","doi":"10.1134/S1063784224700853","DOIUrl":"10.1134/S1063784224700853","url":null,"abstract":"<p>In this paper, the mechanical properties of thin films of filled ethylene-vinyl acetate copolymer and specially synthesized tin oxide nanoparticles are investigated. Tin oxide nanoparticles synthesized in a plasma discharge under the action of ultrasonic cavitation have a size of 50–60 nm, and under ultrasonic exposure, the particle size is 30–40 nm. Using these two types of nanoparticles (before and after ultrasonic exposure), samples of films from composite materials were obtained and studied. The results of studying the fractures of films obtained at the temperature of liquid nitrogen by scanning electron microscopy show that the structure of the material is integral, there are no visible large defects and cavities. Physical and mechanical tests of a film made of a composite material with different contents of tin oxide nanoparticles were carried out. The results of mechanical tests show that ultrasonic treatment of tin oxide nanoparticles before their impregnation into a polymer matrix has a positive effect on the physical and mechanical properties of films made from the studied composite material.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":"69 10","pages":"2501 - 2506"},"PeriodicalIF":1.1,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404154","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
Numerical Study of the Influence of the Dispersed Phase Density on the Interphase Interaction in an Electrically Charged Gas Suspension for the Mass and Surface Electric Charge Density 分散相密度对带电气悬液中相间相互作用影响的数值研究
IF 1.1 4区 物理与天体物理
Technical Physics Pub Date : 2025-02-13 DOI: 10.1134/S1063784224700932
D. A. Tukmakov, N. A. Tukmakova
{"title":"Numerical Study of the Influence of the Dispersed Phase Density on the Interphase Interaction in an Electrically Charged Gas Suspension for the Mass and Surface Electric Charge Density","authors":"D. A. Tukmakov,&nbsp;N. A. Tukmakova","doi":"10.1134/S1063784224700932","DOIUrl":"10.1134/S1063784224700932","url":null,"abstract":"<p>The work is devoted to mathematical modeling of the dynamics of inhomogeneous electrically charged media. The dynamics of gas suspensions (solid particles suspended in a gas) is investigated. The mathematical model has implemented a continual approach to modeling the dynamics of inhomogeneous media; the model takes into account the interphase momentum exchange as well as the interphase heat transfer. The carrier medium is described as a viscous, compressible, heat-conducting gas. The equations of the mathematical model are supplemented with initial and boundary conditions. The influence of the physical density of the dispersed phase material on the intensity of interaction in electrically neutral and electrically charged gas suspensions is investigated. Both surface and mass densities of electric charge are considered.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":"69 10","pages":"2596 - 2602"},"PeriodicalIF":1.1,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404219","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
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