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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 Q4 PHYSICS, APPLIED Pub Date : 2024-06-03 DOI: 10.1134/S1063785024700251
G. Dubov, A. Bogomolov, A. Chernichenko, S. Nokhrin

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.

摘要 介绍了冷却液中低浓度防腐蚀添加剂对气体柴油采矿自卸卡车内燃机缸体冷却套腐蚀、结垢和点蚀影响的研究结果。研究了发动机油系统中冷却剂的负面影响。研究认为,即使冷却剂在发动机油中的浓度很小,也会导致气蚀,同时在发动机的特别受力部件(曲柄连杆衬套、凸轮轴衬套)上出现洞穴或明显的深坑。通过研究可以得出结论,如果冷却液中的防腐蚀添加剂浓度不足,以及当冷却液渗入机油系统时,会对内燃机零件表面层的磨损和破坏产生足够大的影响。
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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 Q4 PHYSICS, APPLIED Pub Date : 2024-06-03 DOI: 10.1134/S1063785024700263
G. Petrishin, F. Panteleenko, V. Blumenstein, F. Switala, E. Panteleenko

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.

摘要 本文评估了在磁性磨料加工技术中应用新型扩散氮化铁磁磨料的效率。在这项工作中,选择加工效率和加工表面可达到的粗糙度作为效率标准。所提出的新型粉末材料是通过对基于 16MnCr5 钢的分散金属废料进行氮化而制造的,它提高了磁性磨料加工的生产率,有效降低了加工表面的粗糙度,并使粗糙度 Ra 达到 0.16 μm。与最常见的烧结粉末材料 Fe-TiC 相比,对基于金属废料的新型氮化粉末材料进行了测试。
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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 Q4 PHYSICS, APPLIED Pub Date : 2024-06-03 DOI: 10.1134/S1063785024700317
S. O. Gladkov

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.

摘要给出了小球在重力场中运动方程的解,并考虑了制动力与时间的关系。计算基于求解阿贝尔积分方程的算法。
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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 Q4 PHYSICS, APPLIED Pub Date : 2024-06-03 DOI: 10.1134/S106378502470024X
E. V. Cherkasova, T. G. Cherkasova

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 Ln3+ 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.

摘要 研究了镧系元素铈与 3-吡啶-3-羧酸的六(硫氰酸盐-N)铬酸盐配合物的一些物理和化学特性。通过红外光谱分析表明,这些化合物为 N-硫氰酸盐,有机配体为双齿型。X 射线衍射分析表明,这些物质具有等离子结构,结晶结构类型相同,其结晶参数随 Ln3+ 离子半径的变化而有规律地变化。物质组成的不同之处仅在于分子中结晶水的含量。本文介绍了这些物质在惰性气氛和氧化气氛中的磁特性和热行为。
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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 Q4 PHYSICS, APPLIED Pub Date : 2024-06-03 DOI: 10.1134/S1063785024700275
D. B. Shatko, V. S. Lyukshin, P. A. Strelnikov

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.

摘要 本文专门研究了在制造柔性磨具时将磨料涂抹到衬底表面的静电方法问题。文章介绍了一种独创的技术,用于制造磨粒以不同角度定向的实验样品。文中给出了磨粒相对于衬底表面的定向装置图。实验揭示并证实了磨粒定向的最佳角度。文章分析了改变电极间距对磨粒在样品底面集中程度的影响参数。结果显示了不同粒度的取向磨粒占磨粒总数的百分比。确定了倾斜角与背衬单位表面实际磨粒数量之间的关系。根据所获得的统计数据,得出了可用于制造柔性磨具的结论。
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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 Q4 PHYSICS, APPLIED Pub Date : 2024-06-03 DOI: 10.1134/S1063785024700305
A. A. Fefelov, A. N. Chuvilin

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.

摘要 本研究考虑了使用接触法对用于制造印刷电路板基座的材料样品实际达到的测量温度精度问题。这项工作的目的是估算当热电偶探头与样品表面接触时,由于温度场畸变而造成的样品表面温度测量误差。对样品与热电偶探针接触前后的温度分布进行了数值模拟。研究了样品的热导率和热电偶与样品的接触面积对温度测量误差的影响。讨论了通过在接触区域引入导热膏形式的热界面来提高接触法温度测量精度的可能性。
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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 Q4 PHYSICS, APPLIED Pub Date : 2024-06-03 DOI: 10.1134/S1063785024700342
A. A. Serebryakova, V. V. Shlyarov, D. V. Zaguliaev, V. E. Gromov

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.

摘要 对商业纯铅 C2 级进行了力学试验,圆柱形铅样品在恒定拉力的蠕变过程中被破坏。试验开始时在变形过程中不加入磁场,然后加入感应为 0.5 T 的磁场。曲线的性质发生了变化。在发现的线性过程阶段,计算了蠕变速率。与没有外部磁场作用的过程相比,蠕变速率有所下降。蠕变过程的持续时间分析取决于磁感应强度和样品的残余相对伸长率。对断裂图的分析表明,所研究样品的断裂形态存在差异。在样品破坏过程中使用磁场,表面凹坑数量减少,纤维区增加,断口形态发生变化。
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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 Q4 PHYSICS, APPLIED Pub Date : 2024-06-03 DOI: 10.1134/S1063785024700330
A. A. Atepalikhin, F. V. Khan, L. V. Filippenko, V. P. Koshelets

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.

摘要 目前,微波传输线在亚赫兹范围内的损耗具有很强的频率依赖性。这项工作的目的是开发、研究和优化超导集成电路,以便在亚赫兹频率范围内匹配长约瑟夫森结振荡器(所谓的 "磁通流振荡器")和超导体-绝缘体-超导体(SIS)探测器的阻抗。这项研究的目标是改进和认可数值计算方法,使其能够正确描述宽频率范围内的实验超导结构。为了优化传输线的拓扑结构和参数,对集成电路进行了数值计算。确定了传输线的主要参数及其对信号传播的影响。450-700 GHz 范围内集成匹配电路的优化结果已得到实验证实。通过优化和改进传输线,可以设计新一代集成超导探测器,更深入地研究隧道 SIS 结(包括分流结)和基于长约瑟夫森结的外差振荡器的特性。
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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 Q4 PHYSICS, APPLIED 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

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 (CuKα radiation) with a graphite monochromator. The effect of the melt cooling rate on the structural state of the contact and free sides of the Fe77Ni1Si9B13 alloy ribbons has been examined. It has been established that, by increasing the melt cooling rate, one can obtain fast-quenched Fe77Ni1Si9B13 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 Fe77Ni1Si9B13 alloy ribbons with crystallographic structures of three types: A2, C16, and D03 (A2 corresponds to the α-Fe(Si) phase; C16, to the Fe2B phase; and D03, to the Fe3Si phase). In the surface layers on the ribbon free side, texturing of the Fe3Si 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.

摘要通过在硬化盘转速分别为 500、1500、2500 和 3500 rpm 的条件下进行熔融纺丝,获得了厚度分别为 200、50、30 和 20 μm 的快速淬火带。色带的化学成分是通过 Spectroflame Modula S 光谱仪上的原子发射光谱测定的。色带的 X 射线衍射图样是在带有石墨单色器的 DRON-6 衍射仪(CuKα 辐射)上获得的。研究了熔体冷却速度对 Fe77Ni1Si9B13 合金带接触面和自由面结构状态的影响。结果表明,通过提高熔体冷却速度,可以获得具有不同结构的快速淬火 Fe77Ni1Si9B13 合金带:在 3500、2500 和 1500 转/分钟时为 X 射线无定形带,在 500 转/分钟时为结晶带。以 500 转/分的淬火盘转速冷却熔体,可获得具有三种结晶结构的 Fe77Ni1Si9B13 合金带:A2、C16 和 D03(A2 相当于 α-Fe(Si)相;C16 相当于 Fe2B 相;D03 相当于 Fe3Si 相)。在无色带一侧的表层中,检测到了 Fe3Si 相的纹理。值得注意的是,在转速为 500 转/分的淬火盘上熔融冷却得到的带状材料的晶体结构与通过退火从无定形状态结晶出来的带状材料的晶体结构不同。
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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 Q4 PHYSICS, APPLIED Pub Date : 2024-03-14 DOI: 10.1134/s106378502390056x
E. A. Smirnova, I. A. Chepurnaya

Abstract

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.

摘要 首次研究了 N,N'-双(水杨醛)乙二胺镍(II)和 N,N'-双(3-甲氧基水杨醛)乙二胺镍(II)复合物的聚合物形式,将其作为有机电化学晶体管导电通道的功能材料。研究确定了聚合物导电性与电解质阴离子掺杂水平的关系。聚合物薄膜的电导率与栅极电压的曲线参数取决于复合物的分子结构和电解质溶剂的性质。
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引用次数: 0
期刊
Technical Physics Letters
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