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Research of the Corrosive Effect of Coolant on the Internal Combustion Engines of Gas-Diesel Mining Dump Trucks 冷却液对天然气柴油采矿自卸车内燃机的腐蚀效应研究
IF 0.8 4区 物理与天体物理
Technical Physics Letters Pub Date : 2024-06-03 DOI: 10.1134/S1063785024700251
G. Dubov, A. Bogomolov, A. Chernichenko, S. Nokhrin
{"title":"Research of the Corrosive Effect of Coolant on the Internal Combustion Engines of Gas-Diesel Mining Dump Trucks","authors":"G. Dubov,&nbsp;A. Bogomolov,&nbsp;A. Chernichenko,&nbsp;S. Nokhrin","doi":"10.1134/S1063785024700251","DOIUrl":"10.1134/S1063785024700251","url":null,"abstract":"<p>The results of the study of the effect of low concentration of anti-corrosion additives in the coolant on corrosion, scaling and pitting of cooling jackets of the cylinder block of the internal combustion engines of the gas-diesel mining dump trucks are presented. The negative influence of the presence of coolant in the engine oil system has been studied. It is argued that even an insignificant concentration of coolant in the engine oil leads to cavitation with the concomitant occurrence of caverns or significant and deep pits—pockmarks—on especially stressed parts of the engine (crank-connecting rod liners, camshaft bushings). The conducted studies allow concluding that the coolant, in the presence of an insufficient concentration of anti-corrosion additives in it, as well as when it penetrates the oil system, has a sufficiently significant effect on the wear and destruction of the surface layer of the internal combustion engine parts.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":"50 1","pages":"30 - 36"},"PeriodicalIF":0.8,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141252355","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
Estimation of the Efficiency of Applying Nitrogen Powder Materials in Magnetic Abrasive Processing Technology 氮粉材料在磁性磨料加工技术中的应用效率估算
IF 0.8 4区 物理与天体物理
Technical Physics Letters Pub Date : 2024-06-03 DOI: 10.1134/S1063785024700263
G. Petrishin, F. Panteleenko, V. Blumenstein, F. Switala, E. Panteleenko
{"title":"Estimation of the Efficiency of Applying Nitrogen Powder Materials in Magnetic Abrasive Processing Technology","authors":"G. Petrishin,&nbsp;F. Panteleenko,&nbsp;V. Blumenstein,&nbsp;F. Switala,&nbsp;E. Panteleenko","doi":"10.1134/S1063785024700263","DOIUrl":"10.1134/S1063785024700263","url":null,"abstract":"<p>The article evaluates the efficiency of applying new diffusion-nitrided ferromagnetic abrasive materials in the technology of magnetic abrasive processing. In this work, the efficiency of processing and the attainable roughness of the processed surface are selected as efficiency criteria. The proposed new powder materials are manufactured by nitriding dispersed metal waste based on 16MnCr5 steel and provide an increase in the productivity of magnetic abrasive processing, an effective decrease in the roughness of the processed surface, and the achievement of a roughness Ra of 0.16 μm. The tests of new nitrided powder materials based on metal waste were carried out in comparison with the most common sintered powder material Fe–TiC.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":"50 1","pages":"37 - 41"},"PeriodicalIF":0.8,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141252388","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
Toward the Analysis of the Equation of Motion of a Ball Moving Unevenly in a Gravity Field 浅析在重力场中做匀速运动的小球的运动方程
IF 0.8 4区 物理与天体物理
Technical Physics Letters Pub Date : 2024-06-03 DOI: 10.1134/S1063785024700317
S. O. Gladkov
{"title":"Toward the Analysis of the Equation of Motion of a Ball Moving Unevenly in a Gravity Field","authors":"S. O. Gladkov","doi":"10.1134/S1063785024700317","DOIUrl":"10.1134/S1063785024700317","url":null,"abstract":"<p>An of the solution to the equation of motion of a ball in a gravity field is given with allowance for the dependence of the braking force on time. The calculations are based on an algorithm for solving the Abel integral equation.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":"50 1","pages":"63 - 66"},"PeriodicalIF":0.8,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141252466","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
Physical and Chemical Characteristics of the Chromium and the Cerium Group Lanthanide-Based New Materials 铬和铈族镧系元素新材料的物理和化学特性
IF 0.8 4区 物理与天体物理
Technical Physics Letters Pub Date : 2024-06-03 DOI: 10.1134/S106378502470024X
E. V. Cherkasova, T. G. Cherkasova
{"title":"Physical and Chemical Characteristics of the Chromium and the Cerium Group Lanthanide-Based New Materials","authors":"E. V. Cherkasova,&nbsp;T. G. Cherkasova","doi":"10.1134/S106378502470024X","DOIUrl":"10.1134/S106378502470024X","url":null,"abstract":"<p>Some physical and chemical characteristics of hexa(thiocyanate-N)chromate complexes of cerium lanthanides with 3-pyridine-3-carboxylic acid are studied. It was shown by IR spectroscopy that the compounds are N-thiocyanate, the organic ligand is bidentate. It was established by X-ray diffraction analysis that substances have an isle structure, crystallize acoording the same structural type, and their crystallographic parameters change regularly in accordance with the change in the radii of Ln<sup>3+</sup> ions. The compositions of the substances differ only in the content of crystallization water in the molecules. The magnetic characteristics and thermal behavior of substances in an inert atmosphere and oxidizing atmospheres are presented.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":"50 1","pages":"25 - 29"},"PeriodicalIF":0.8,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141253001","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 Electrostatic Method of Applying Abrasive Grains to the Grinding Tool Backing 将磨粒应用于磨削工具底面的静电方法研究
IF 0.8 4区 物理与天体物理
Technical Physics Letters Pub Date : 2024-06-03 DOI: 10.1134/S1063785024700275
D. B. Shatko, V. S. Lyukshin, P. A. Strelnikov
{"title":"Study of the Electrostatic Method of Applying Abrasive Grains to the Grinding Tool Backing","authors":"D. B. Shatko,&nbsp;V. S. Lyukshin,&nbsp;P. A. Strelnikov","doi":"10.1134/S1063785024700275","DOIUrl":"10.1134/S1063785024700275","url":null,"abstract":"<p>The article is devoted to the study of the problem of the electrostatic method of applying abrasive to the surface of the backing when manufacturing flexible grinding tools. An original technique for the manufacture of experimental samples with abrasive grains oriented at various angles is presented in the article. The diagrams of apparatuses for the orientation of grains relative to the backing surface are given. The optimal angle of grain orientation was revealed and substantiated experimentally. The parameter of the influence of changing the distance between the electrodes on the degree of concentration of grains on the backing surface of the samples is analyzed. The percentage ratios of oriented abrasive grains relative to their total number for various grain sizes are presented. The relationship between the angle of inclination and the actual number of grains per unit surface of the backing is determined. Based on the statistical data obtained, conclusions are formulated that can be used in the manufacture of flexible grinding tools.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":"50 1","pages":"42 - 47"},"PeriodicalIF":0.8,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141252671","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
Studying the Effect of a Thermocouple Contact with the Surface of a Thin Sample with Low Thermal Conductivity on the Accuracy of Temperature Determination 研究热电偶与低导热率薄型样品表面的接触对温度测定精度的影响
IF 0.8 4区 物理与天体物理
Technical Physics Letters Pub Date : 2024-06-03 DOI: 10.1134/S1063785024700305
A. A. Fefelov, A. N. Chuvilin
{"title":"Studying the Effect of a Thermocouple Contact with the Surface of a Thin Sample with Low Thermal Conductivity on the Accuracy of Temperature Determination","authors":"A. A. Fefelov,&nbsp;A. N. Chuvilin","doi":"10.1134/S1063785024700305","DOIUrl":"10.1134/S1063785024700305","url":null,"abstract":"<p>The issue of the actually achieved measurement temperature accuracy of samples of materials used for fabricating printed circuit board bases using the contact method is considered. The purpose of the work is to estimate the error in measuring the temperature of the sample surface caused by the temperature field distortion when a thermocouple probe is brought into contact with the surface. Numerical simulation of the temperature distribution in the sample before and after its contact with the thermocouple probe is carried out. The effect of the thermal conductivity of a sample and the contact area of a thermocouple with the sample on the temperature measurement error is studied. The possibility of increasing the accuracy of temperature measurements by the contact method by introducing a thermal interface in the form of a heat-conducting paste into the contact area is discussed.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":"50 1","pages":"58 - 62"},"PeriodicalIF":0.8,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141252654","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
Destruction of Commercially Pure Lead in Process Creep in a Constant Magnetic Field 恒定磁场中工艺蠕变对商用纯铅的破坏
IF 0.8 4区 物理与天体物理
Technical Physics Letters Pub Date : 2024-06-03 DOI: 10.1134/S1063785024700342
A. A. Serebryakova, V. V. Shlyarov, D. V. Zaguliaev, V. E. Gromov
{"title":"Destruction of Commercially Pure Lead in Process Creep in a Constant Magnetic Field","authors":"A. A. Serebryakova,&nbsp;V. V. Shlyarov,&nbsp;D. V. Zaguliaev,&nbsp;V. E. Gromov","doi":"10.1134/S1063785024700342","DOIUrl":"10.1134/S1063785024700342","url":null,"abstract":"<p>Mechanical tests of commercially pure lead grade C2 were carried out, cylindrical samples of lead were destroyed in the process of creep with a constant tensile force. The tests were carried out initially without the inclusion of a magnetic field during deformation, then with the inclusion of a magnetic field with an induction of 0.5 T. Based on the data obtained, characteristic curves of the creep process were constructed. A change in the nature of the curve is revealed. At the discovered linear stage of the process, the creep rate was calculated. A decrease in the creep rate is shown compared to the process without the action of an external magnetic field. The duration of the creep process is analyzed depending on the induction and the percentage of residual relative elongation of the samples. Analysis of the fractograms showed a difference in the morphology of fractures in the studied samples. With the use of a magnetic field during the destruction of the sample, the number of pits on the surface decreased, the fibrous zone increased, and the fracture morphology changed.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":"50 1","pages":"78 - 82"},"PeriodicalIF":0.8,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141252433","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
Superconducting Matching Circuits for an Oscillator and an SIS Mixer in the Subterahertz Frequency Range 用于亚赫兹频率范围振荡器和 SIS 混频器的超导匹配电路
IF 0.8 4区 物理与天体物理
Technical Physics Letters Pub Date : 2024-06-03 DOI: 10.1134/S1063785024700330
A. A. Atepalikhin, F. V. Khan, L. V. Filippenko, V. P. Koshelets
{"title":"Superconducting Matching Circuits for an Oscillator and an SIS Mixer in the Subterahertz Frequency Range","authors":"A. A. Atepalikhin,&nbsp;F. V. Khan,&nbsp;L. V. Filippenko,&nbsp;V. P. Koshelets","doi":"10.1134/S1063785024700330","DOIUrl":"10.1134/S1063785024700330","url":null,"abstract":"<p>At present, microwave transmission lines are characterized by a strong frequency dependence of loss in the subterahertz range. This work is aimed at development, research, and optimization of superconducting integrated circuits designed for matching the impedances of a long Josephson junction oscillator (a so-called “flux-flow oscillator”) and a superconductor–insulator–superconductor (SIS) detector in the subterahertz frequency range. The goal of this study is to improve and approve the numerical calculation methods, which make it possible to describe correctly experimental superconducting structures in a wide frequency range. Numerical calculations of integrated circuits have been performed in order to optimize the topology and parameters of transmission lines. The main parameters of the transmission lines and their influence on the signal propagation are determined. The results of optimization of integrated matching circuits in the range of 450–700 GHz have been experimentally confirmed. Optimization and improvement of transmission lines allow one to design new-generation integrated superconducting detectors and investigate tunnel SIS junctions more thoroughly (including shunted ones) and the properties of heterodyne oscillators based on long Josephson junctions.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":"50 1","pages":"75 - 77"},"PeriodicalIF":0.8,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141252477","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
On the Effect of the Melt Cooling Rate upon Spinning on the Structure of the Surface Layers of Fe77Ni1Si9B13 Alloy Ribbons 纺丝时熔体冷却速率对 Fe77Ni1Si9B13 合金带表面层结构的影响
IF 0.8 4区 物理与天体物理
Technical Physics Letters Pub Date : 2024-03-28 DOI: 10.1134/S1063785024700184
V. I. Lad’yanov, M. S. Konovalov, M. I. Mokrushina, A. I. Shilyaev, D. P. Ardasheva
{"title":"On the Effect of the Melt Cooling Rate upon Spinning on the Structure of the Surface Layers of Fe77Ni1Si9B13 Alloy Ribbons","authors":"V. I. Lad’yanov,&nbsp;M. S. Konovalov,&nbsp;M. I. Mokrushina,&nbsp;A. I. Shilyaev,&nbsp;D. P. Ardasheva","doi":"10.1134/S1063785024700184","DOIUrl":"10.1134/S1063785024700184","url":null,"abstract":"<p>Fast-quenched ribbons with thicknesses of 200, 50, 30, and 20 μm have been obtained by melt spinning at hardening disk rotation speeds of 500, 1500, 2500, and 3500 rpm, respectively. The chemical composition of the ribbons has been determined by atomic emission spectroscopy on a Spectroflame Modula S spectrometer. X-ray diffraction patterns of the ribbons have obtained on a DRON-6 diffractometer (Cu<i>K</i>α radiation) with a graphite monochromator. The effect of the melt cooling rate on the structural state of the contact and free sides of the Fe<sub>77</sub>Ni<sub>1</sub>Si<sub>9</sub>B<sub>13</sub> alloy ribbons has been examined. It has been established that, by increasing the melt cooling rate, one can obtain fast-quenched Fe<sub>77</sub>Ni<sub>1</sub>Si<sub>9</sub>B<sub>13</sub> alloy ribbons with different structures: X-ray amorphous at 3500, 2500, and 1500 rpm and crystalline at 500 rpm. Cooling of the melt at a quenching disk rotation speed of 500 rpm makes it possible to obtain Fe<sub>77</sub>Ni<sub>1</sub>Si<sub>9</sub>B<sub>13</sub> alloy ribbons with crystallographic structures of three types: <i>A</i>2, <i>C</i>16, and <i>D</i>0<sub>3</sub> (<i>A</i>2 corresponds to the α-Fe(Si) phase; <i>C</i>16, to the Fe<sub>2</sub>B phase; and <i>D</i>0<sub>3</sub>, to the Fe<sub>3</sub>Si phase). In the surface layers on the ribbon free side, texturing of the Fe<sub>3</sub>Si phase has been detected. It is noted that the crystal structure of the ribbons obtained by melt cooling on a quenching disk at a rotation speed of 500 rpm differs from the structure of the ribbons of this alloy crystallized from the amorphous state by annealing.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":"50 1","pages":"1 - 5"},"PeriodicalIF":0.8,"publicationDate":"2024-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140323756","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
Gate-Source Voltage Dependence of the Electrical Conductivity of Nickel-Salen Polymers in the Electrochemical Transistor 电化学晶体管中镍盐聚合物电导率的栅源电压依赖性
IF 0.6 4区 物理与天体物理
Technical Physics Letters Pub Date : 2024-03-14 DOI: 10.1134/s106378502390056x
E. A. Smirnova, I. A. Chepurnaya
{"title":"Gate-Source Voltage Dependence of the Electrical Conductivity of Nickel-Salen Polymers in the Electrochemical Transistor","authors":"E. A. Smirnova, I. A. Chepurnaya","doi":"10.1134/s106378502390056x","DOIUrl":"https://doi.org/10.1134/s106378502390056x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>For the first time, polymeric forms of the complexes N,N'-bis(salicylidene)ethylenediaminonickel (II) and N,N'-bis(3-methoxysalicylidene)ethylenediaminonickel (II) have been investigated as functional materials for the conducting channels of organic electrochemical transistors. The dependence of the electrical conductivity of the polymers on the electrolyte anion-doping level has been established. The polymer film conductance versus gate voltage curve parameters have been shown to depend on the molecular structure of the complex and the nature of the electrolyte solvent.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":"22 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140886586","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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