Pub Date : 2024-06-03DOI: 10.1134/s1063785024700202
K. V. Aksenova, V. V. Shlyarov, D. V. Zagulyaev, Yu. F. Ivanov, H. M. Mohan
Abstract
High-cycle fatigue tests of VT1-0 titanium samples were carried out under conditions of exposure to a constant magnetic field of various magnitudes and without it. It is shown that the use of a constant magnetic field with induction B = 0.3, 0.4, and 0.5 T leads to a multiple increase in the average number of cycles before the destruction of titanium samples VT1-0 by 64, 123, and 163%, respectively. Using scanning electron microscopy, it was found that the structure of a sample destroyed under fatigue testing conditions, regardless of the test mode, has three characteristic zones: a fatigue crack growth zone, an accelerated crack growth zone, and a fracture zone. It was found that the width of the fatigue crack growth zone depends on the magnetic field induction and reaches its maximum values (h = 264 μm) at B = 0.4 T, and during fatigue tests without a magnetic field, h = 182 μm. This indicates an increase in the critical crack length (the width of the fatigue crack growth zone) by a factor of 1.45. It is shown that the average distance between fatigue striations in titanium samples depends on the value of the magnetic induction of the magnetic field and decreases from 0.78 μm in the absence of a field to 0.49 μm at B = 0.5 T. The formation of a subgrain (fragmented) structure in the zone of fatigue crack growth in a titanium sample was established. The subgrain sizes correspond to the distance between the fatigue striations, which has a retarding effect on the movement of a microcrack. Taken together, the revealed facts indicate a higher resistance of the material to the propagation of a fatigue crack and an increase in its service life during fatigue tests in a magnetic field.
摘要 在暴露于不同大小的恒定磁场和不暴露于恒定磁场的条件下，对 VT1-0 钛样品进行了高循环疲劳试验。结果表明，使用磁感应强度 B = 0.3、0.4 和 0.5 T 的恒定磁场可使 VT1-0 钛样品破坏前的平均循环次数分别增加 64%、123% 和 163%。利用扫描电子显微镜发现，在疲劳测试条件下破坏的样品，无论测试模式如何，其结构都有三个特征区：疲劳裂纹增长区、加速裂纹增长区和断裂区。研究发现，疲劳裂纹增长区的宽度取决于磁场感应，在 B = 0.4 T 时达到最大值（h = 264 μm），而在无磁场的疲劳试验中，h = 182 μm。这表明临界裂纹长度（疲劳裂纹生长区宽度）增加了 1.45 倍。研究表明，钛样品中疲劳条纹之间的平均距离取决于磁场的磁感应强度值，从无磁场时的 0.78 μm 减小到 B = 0.5 T 时的 0.49 μm。亚晶粒的大小与疲劳条纹之间的距离相对应，这对微裂纹的移动具有阻碍作用。综上所述，所揭示的事实表明，在磁场中进行疲劳试验时，材料对疲劳裂纹扩展的阻力更大，使用寿命更长。
{"title":"Increasing the Fatigue Life of VT1-0 Titanium under the Influence of a Constant Magnetic Field","authors":"K. V. Aksenova, V. V. Shlyarov, D. V. Zagulyaev, Yu. F. Ivanov, H. M. Mohan","doi":"10.1134/s1063785024700202","DOIUrl":"https://doi.org/10.1134/s1063785024700202","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>High-cycle fatigue tests of VT1-0 titanium samples were carried out under conditions of exposure to a constant magnetic field of various magnitudes and without it. It is shown that the use of a constant magnetic field with induction <i>B</i> = 0.3, 0.4, and 0.5 T leads to a multiple increase in the average number of cycles before the destruction of titanium samples VT1-0 by 64, 123, and 163%, respectively. Using scanning electron microscopy, it was found that the structure of a sample destroyed under fatigue testing conditions, regardless of the test mode, has three characteristic zones: a fatigue crack growth zone, an accelerated crack growth zone, and a fracture zone. It was found that the width of the fatigue crack growth zone depends on the magnetic field induction and reaches its maximum values (<i>h</i> = 264 μm) at <i>B</i> = 0.4 T, and during fatigue tests without a magnetic field, <i>h</i> = 182 μm. This indicates an increase in the critical crack length (the width of the fatigue crack growth zone) by a factor of 1.45. It is shown that the average distance between fatigue striations in titanium samples depends on the value of the magnetic induction of the magnetic field and decreases from 0.78 μm in the absence of a field to 0.49 μm at <i>B</i> = 0.5 T. The formation of a subgrain (fragmented) structure in the zone of fatigue crack growth in a titanium sample was established. The subgrain sizes correspond to the distance between the fatigue striations, which has a retarding effect on the movement of a microcrack. Taken together, the revealed facts indicate a higher resistance of the material to the propagation of a fatigue crack and an increase in its service life during fatigue tests in a magnetic field.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141252667","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}
Pub Date : 2024-06-03DOI: 10.1134/s1063785024700299
S. I. Koshoridze
Abstract
The electrostatic stabilization of bulk nanobubbles is investigated taking into account the structure of a double layer consisting of diffusion and Stern regions, with the permittivity of the latter being significantly lower than that of the former. It is shown that a narrow hydrated Stern layer significantly increases the negative electrostatic pressure and, at certain values of the surface charge, can compensate for the huge compressive Laplace pressure by preventing the diffusion dissolution of bulk nanobubbles.
{"title":"The Effect of the Structure of an Electric Double Layer on the Stability of Bulk Nanobubbles","authors":"S. I. Koshoridze","doi":"10.1134/s1063785024700299","DOIUrl":"https://doi.org/10.1134/s1063785024700299","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The electrostatic stabilization of bulk nanobubbles is investigated taking into account the structure of a double layer consisting of diffusion and Stern regions, with the permittivity of the latter being significantly lower than that of the former. It is shown that a narrow hydrated Stern layer significantly increases the negative electrostatic pressure and, at certain values of the surface charge, can compensate for the huge compressive Laplace pressure by preventing the diffusion dissolution of bulk nanobubbles.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141252932","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}
Pub Date : 2024-06-03DOI: 10.1134/s1063785024700287
Yanhu Wang, Xizhang Chen, S. Konovalov
Abstract
A new wire-arc additive manufacturing (WAAM) based on Cold Metal Transfer (CMT) welding process is used to fabricate iron-chromium-aluminum (Fe–Cr–Al) alloy by simultaneously feeding two separate wires. A wall of Fe–Cr–Al containing approximately 4.2% Al and 6.5% Cr was deposited over a steel substrate. Chemical composition test performed on the deposited alloy indicated a uniform material distribution of element throughout the deposited wall. It was also found that an increase in Al content or decrease in Cr content improved the hardness of the Fe–Cr–Al alloy. A macro and microstructural characterization revealed that the top region of the wall contained equiaxed grains, whereas columnar grain in the middle region and some acicular precipitates of Fe3AlC0.5 phase at the bottom were observed. The phases at different locations within the built wall were very different, especially, in the top section and bottom section. In the top and middle sections Fe3C carbide were found. The Cr3C2 carbides were found in the top section. No (Cr,Fe)xCy carbides were found at the bottom of the buildup wall. A comparison of bottom and top sections indicated that the (Fe,Cr)xCy carbides have the ability to prevent cracks from occurring.
{"title":"Fe–Cr–Al Alloy Development Via Wire-Feed Additive Manufacturing Technology","authors":"Yanhu Wang, Xizhang Chen, S. Konovalov","doi":"10.1134/s1063785024700287","DOIUrl":"https://doi.org/10.1134/s1063785024700287","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>A new wire-arc additive manufacturing (WAAM) based on Cold Metal Transfer (CMT) welding process is used to fabricate iron-chromium-aluminum (Fe–Cr–Al) alloy by simultaneously feeding two separate wires. A wall of Fe–Cr–Al containing approximately 4.2% Al and 6.5% Cr was deposited over a steel substrate. Chemical composition test performed on the deposited alloy indicated a uniform material distribution of element throughout the deposited wall. It was also found that an increase in Al content or decrease in Cr content improved the hardness of the Fe–Cr–Al alloy. A macro and microstructural characterization revealed that the top region of the wall contained equiaxed grains, whereas columnar grain in the middle region and some acicular precipitates of Fe<sub>3</sub>AlC<sub>0.5</sub> phase at the bottom were observed. The phases at different locations within the built wall were very different, especially, in the top section and bottom section. In the top and middle sections Fe<sub>3</sub>C carbide were found. The Cr<sub>3</sub>C<sub>2</sub> carbides were found in the top section. No (Cr,Fe)<sub><i>x</i></sub>C<sub><i>y</i></sub> carbides were found at the bottom of the buildup wall. A comparison of bottom and top sections indicated that the (Fe,Cr)<sub><i>x</i></sub>C<sub><i>y</i></sub> carbides have the ability to prevent cracks from occurring.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141252637","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}
Pub Date : 2024-06-03DOI: 10.1134/s1063785024700329
D. A. Chinakhov
Abstract
The authors have considered the gas-dynamic influence upon the mechanical properties, chemical composition, microhardness, and geometry of single-rim welds made of 30ХГСА steel when welding with a consumable electrode under a double-jet gas shield. Their regressional relationships on the selected controlled welding parameters have been developed. It has been found that the gas-dynamic effect of a dynamic shield gas jet has a controlling influence on the formation of welds made of alloy-treated 30ХГСА steel.
{"title":"Gas-Dynamic Influence upon the Properties and Geometry of Single-Rim Welds Made of 30ХГСА Steel When Welding under a Double-Jet Gas Shield","authors":"D. A. Chinakhov","doi":"10.1134/s1063785024700329","DOIUrl":"https://doi.org/10.1134/s1063785024700329","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The authors have considered the gas-dynamic influence upon the mechanical properties, chemical composition, microhardness, and geometry of single-rim welds made of 30ХГСА steel when welding with a consumable electrode under a double-jet gas shield. Their regressional relationships on the selected controlled welding parameters have been developed. It has been found that the gas-dynamic effect of a dynamic shield gas jet has a controlling influence on the formation of welds made of alloy-treated 30ХГСА steel.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141252669","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}
Pub Date : 2024-06-03DOI: 10.1134/s1063785024700196
A. O. Lapich, M. Yu. Medvedik
Abstract
The aim of this study is to develop, construct, and implement methods for solving a nonlinear diffraction problem. The effect of a nonlinear medium specified by the Kerr law ({{k}^{2}}(x) = k_{1}^{2} + alpha {{left| {u(x)} right|}^{2}}) on the propagation of a wave through an object is examined. The differential and integral forms of the problem and the nonlinear integral equation are presented. The problem is solved on different bodies using different computational grids, and plots of convergence of iterative processes and graphical results are presented. Explicit and implicit methods for solving the integral equation are compared.
{"title":"Solution of a Scalar Two-Dimensional Nonlinear Problem of Diffraction on Objects of Arbitrary Shape","authors":"A. O. Lapich, M. Yu. Medvedik","doi":"10.1134/s1063785024700196","DOIUrl":"https://doi.org/10.1134/s1063785024700196","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The aim of this study is to develop, construct, and implement methods for solving a nonlinear diffraction problem. The effect of a nonlinear medium specified by the Kerr law <span>({{k}^{2}}(x) = k_{1}^{2} + alpha {{left| {u(x)} right|}^{2}})</span> on the propagation of a wave through an object is examined. The differential and integral forms of the problem and the nonlinear integral equation are presented. The problem is solved on different bodies using different computational grids, and plots of convergence of iterative processes and graphical results are presented. Explicit and implicit methods for solving the integral equation are compared.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141252473","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}
Pub Date : 2024-06-03DOI: 10.1134/s1063785024700214
V. Yu. Blumenstein, K. S. Mitrofanova
Abstract
The article describes the peculiarities of the formation of the geometry of the deformation zones and the structure of samples made of pure-iron in surface plastic deformation (SPD) by a multiradius roller (MR-roller). The SPD MR-roller leads to a complex kinematic introduction of a deforming tool into the surface layer of a blank and the appearance of a deformation hearth of a curvilinear shape. The results of X-ray structural analysis of pure-iron are presented. It is shown that processing of SPD MR-roller with maximum force results in a significant increase in the microdistortion of the crystal grid, which is characteristic of the nanoscale structure.
摘 要 本文介绍了多半径轧辊（MR-roller）在表面塑性变形（SPD）过程中形成变形区几何形状和纯铁样品结构的特殊性。多半径轧辊表面塑性变形（SPD）导致变形工具以复杂的运动方式进入坯料表层，并出现曲线形状的变形炉膛。本文介绍了纯铁的 X 射线结构分析结果。结果表明，以最大力加工 SPD MR-roller 会导致晶体网格的微变形显著增加，这是纳米级结构的特征。
{"title":"Investigation of Effect of the State of the Deformation Zones on the Structure of Pure-Iron Samples after Surface Plastic Deformation by a Multiradius Roller","authors":"V. Yu. Blumenstein, K. S. Mitrofanova","doi":"10.1134/s1063785024700214","DOIUrl":"https://doi.org/10.1134/s1063785024700214","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The article describes the peculiarities of the formation of the geometry of the deformation zones and the structure of samples made of pure-iron in surface plastic deformation (SPD) by a multiradius roller (MR-roller). The SPD MR-roller leads to a complex kinematic introduction of a deforming tool into the surface layer of a blank and the appearance of a deformation hearth of a curvilinear shape. The results of X-ray structural analysis of pure-iron are presented. It is shown that processing of SPD MR-roller with maximum force results in a significant increase in the microdistortion of the crystal grid, which is characteristic of the nanoscale structure.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141252543","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}
Pub Date : 2024-06-03DOI: 10.1134/s1063785024700263
G. Petrishin, F. Panteleenko, V. Blumenstein, F. Switala, E. Panteleenko
Abstract
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。
{"title":"Estimation of the Efficiency of Applying Nitrogen Powder Materials in Magnetic Abrasive Processing Technology","authors":"G. Petrishin, F. Panteleenko, V. Blumenstein, F. Switala, E. Panteleenko","doi":"10.1134/s1063785024700263","DOIUrl":"https://doi.org/10.1134/s1063785024700263","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><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":null,"pages":null},"PeriodicalIF":0.6,"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}
Pub Date : 2024-06-03DOI: 10.1134/s1063785024700251
G. Dubov, A. Bogomolov, A. Chernichenko, S. Nokhrin
Abstract
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.
{"title":"Research of the Corrosive Effect of Coolant on the Internal Combustion Engines of Gas-Diesel Mining Dump Trucks","authors":"G. Dubov, A. Bogomolov, A. Chernichenko, S. Nokhrin","doi":"10.1134/s1063785024700251","DOIUrl":"https://doi.org/10.1134/s1063785024700251","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><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":null,"pages":null},"PeriodicalIF":0.6,"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}
Pub Date : 2024-06-03DOI: 10.1134/s1063785024700317
S. O. Gladkov
Abstract
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.
{"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":"https://doi.org/10.1134/s1063785024700317","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><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":null,"pages":null},"PeriodicalIF":0.6,"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}
Pub Date : 2024-06-03DOI: 10.1134/s106378502470024x
E. V. Cherkasova, T. G. Cherkasova
Abstract
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.
{"title":"Physical and Chemical Characteristics of the Chromium and the Cerium Group Lanthanide-Based New Materials","authors":"E. V. Cherkasova, T. G. Cherkasova","doi":"10.1134/s106378502470024x","DOIUrl":"https://doi.org/10.1134/s106378502470024x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><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":null,"pages":null},"PeriodicalIF":0.6,"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}
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