Russian Metallurgy (Metally)最新文献_第6页

Determination of the Conditions for the Electrochemical Removal of Phosphate Ions from Washing Solutions Obtained during the Processing of Alunite from the Zaglik Deposit Zaglik明矾石加工过程中洗涤液中磷离子的电化学去除条件的确定

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Russian Metallurgy (Metally) Pub Date : 2026-08-14 DOI: 10.1134/S0036029526600227

A. A. Heydarov, P. G. Babaeva, D. T. Mehmet, G. I. Alyshanly, S. T. Jafarova

{"title":"Determination of the Conditions for the Electrochemical Removal of Phosphate Ions from Washing Solutions Obtained during the Processing of Alunite from the Zaglik Deposit","authors":"A. A. Heydarov, P. G. Babaeva, D. T. Mehmet, G. I. Alyshanly, S. T. Jafarova","doi":"10.1134/S0036029526600227","DOIUrl":"10.1134/S0036029526600227","url":null,"abstract":"This article investigates the process of electrochemical removal of phosphate ions from washing solutions generated in aluminum production. A distinctive feature of these solutions is the presence of a significant concentration of aluminum (46.42 g/L) in the form of [Al(OH)4]–, in addition to phosphate ions (up to 1.7 g/L). The influence of operational parameters—initial pH, process time (τ), initial phosphate ion concentration, interelectrode distance, and current density—on the efficiency of phosphate removal by electrocoagulation using aluminum electrodes was studied. It is shown that electrochemical dissolution of the aluminum anode followed by hydrolysis of Al3+ ions in solution leads to the formation of an amorphous coagulant precipitate, aluminum hydroxide. It was established that electrolysis of the solution with an aluminum anode at a current density of J = 10 mA/cm2 results in phosphate ion removal exceeding 90%. The electrocoagulation product was characterized by SEM/EDS analysis. The effect of possible impurities (({text{SO}}_{4}^{{2 - }}), ({text{PO}}_{4}^{{3 - }}), F–, Cl–, ({text{VO}}_{4}^{{3 - }})) present in washing solutions obtained during alunite processing on the degree of phosphate removal was also evaluated.","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2026 4","pages":"637 - 645"},"PeriodicalIF":0.3,"publicationDate":"2026-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148719159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanical Testing and Microstructural Characterization of Roll-Formed Profiled Tubes from Circular Pipes 圆管滚轧异型管的力学试验及微观结构表征

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Russian Metallurgy (Metally) Pub Date : 2026-08-14 DOI: 10.1134/S003602952560049X

Meng-long Xing, Yang-chao Liu, Hong-chao Ji, Ji-yan Liu, Feng-shan Du

{"title":"Mechanical Testing and Microstructural Characterization of Roll-Formed Profiled Tubes from Circular Pipes","authors":"Meng-long Xing, Yang-chao Liu, Hong-chao Ji, Ji-yan Liu, Feng-shan Du","doi":"10.1134/S003602952560049X","DOIUrl":"10.1134/S003602952560049X","url":null,"abstract":"To investigate the forming mechanism of shaped tubes in roll forming of circular tubes, this study conducted roll forming experiments on shaped tubes with different materials and geometries. Using a 30 × 30 mm Q345B square tube as the target, samples were taken from both the planar and corner regions for mechanical property testing and microstructural characterization. The results show that in the uniaxial tensile tests of the planar region, 20Mn2 exhibited the highest tensile strength. Fracture surfaces of all materials displayed evident dimples, second-phase particles, and tear ridges, indicating significant ductile fracture characteristics. In the hardness tests of the corner region, the inner side showed noticeably higher hardness than the outer side, with the maximum value occurring in the inner area. The dislocation density in the inner corner was greater than in the middle and outer regions, a result of metal flow in the corner area. TEM observations of the corner region revealed substantial dislocation pile-ups at grain boundaries, demonstrating severe plastic deformation in this zone.","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2026 4","pages":"676 - 684"},"PeriodicalIF":0.3,"publicationDate":"2026-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148719169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation on Microhardness and Microstructure Properties of Titanium Alloy/ WC–Ni–Cr Coating with Laser Cladding Approach 激光熔覆钛合金/ WC-Ni-Cr涂层显微硬度及组织性能研究

IF 0.3

Russian Metallurgy (Metally) Pub Date : 2026-08-14 DOI: 10.1134/S0036029525600579

Murahari Kolli, Kosaraju Satyanarayana

{"title":"Investigation on Microhardness and Microstructure Properties of Titanium Alloy/ WC–Ni–Cr Coating with Laser Cladding Approach","authors":"Murahari Kolli,  Kosaraju Satyanarayana","doi":"10.1134/S0036029525600579","DOIUrl":"10.1134/S0036029525600579","url":null,"abstract":"This article employs laser cladding to enhance the microhardness and microstructure properties of the Titanium alloy applied to the WC–Ni–Cr powder coating. The 50 wt % WC and 50 wt % Ni/Cr alloy powder (85% Ni, 15% Cr) were chosen as a cladding material, and the appropriate laser cladding parameters were adjusted. The laser cladding parameters are laser power (LP), laser scanning speed (LSS), and powder feed rate (PFR). The Taguchi approach was utilized to develop the experimental arrangement and optimize its performance parameters. An analysis of variance (ANOVA) was executed to evaluate the significance of parameters and their contribution to microhardness. The optimal microhardness observed in experiment 4, i.e., laser power of 2.0 kW, laser scan speed of 0.04 m/s, and powder feed rate of 44 g/min, was identified as the best process parameter. An optical microscope was used to investigate the cladding sample’s microstructure. The microstructure results demonstrate that certain samples have excellent substrate-cladding adhesion, well-distributed WC powder particles, and star structures. Furthermore, energy dispersive spectroscopy (EDS) data revealed that more Ni, W, Ti, and Cr particles were present on the cladding samples.","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2026 4","pages":"585 - 593"},"PeriodicalIF":0.3,"publicationDate":"2026-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148719170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrochemical Control of Concentration of Silicon Ions during Electrolysis of Molten Electrolytes 熔液电解过程中硅离子浓度的电化学控制

IF 0.3

Russian Metallurgy (Metally) Pub Date : 2026-07-31 DOI: 10.1134/S0036029526700710

Y. A. Parasotchenko, T. A. Gevel, A. B. Suzdaltsev

{"title":"Electrochemical Control of Concentration of Silicon Ions during Electrolysis of Molten Electrolytes","authors":"Y. A. Parasotchenko, T. A. Gevel, A. B. Suzdaltsev","doi":"10.1134/S0036029526700710","DOIUrl":"10.1134/S0036029526700710","url":null,"abstract":"Silicon and silicon-based materials are increasingly used, as this element is in demand in microelectronics, solar energy, as well as in lithium-ion batteries with improved anode capacity. To obtain silicon of the required morphology and dimensions, electrodeposition methods are promising. At the same time, in order to meet the requirements, electrodeposition should be performed at a stable concentration of silicon ions in electrolytes. In the present work possible ways are briefly discussed, and a method of electrochemical control of concentration of silicon ions during electrolysis of melts based on mixtures of LiCl, KCl, CsCl with the addition of K2SiF6 in the range of operating temperatures from 550 to 790°C is proposed and tested. For three electrolyte compositions, empirical dependences of the current density of the electroreduction peak current of silicon ions as a function of their concentration in the melts were plotted using spectral analysis, voltametric measurements, and an electrochemical sensor. Based on the obtained dependences, the possibility of online control of silicon ion concentration during electrolysis of KCl–K2SiF6 melt was demonstrated.","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2026 3","pages":"462 - 468"},"PeriodicalIF":0.3,"publicationDate":"2026-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148628435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Calculation of the Densities of Alkali Metal Bromides at High Temperatures with Allowance for the Dipole–Dipole Interactions between Ions in Melts 考虑熔体中离子间偶极-偶极相互作用的高温下碱金属溴化物密度计算

IF 0.3

Russian Metallurgy (Metally) Pub Date : 2026-07-31 DOI: 10.1134/S0036029526700692

A. G. Davydov

{"title":"Calculation of the Densities of Alkali Metal Bromides at High Temperatures with Allowance for the Dipole–Dipole Interactions between Ions in Melts","authors":"A. G. Davydov","doi":"10.1134/S0036029526700692","DOIUrl":"10.1134/S0036029526700692","url":null,"abstract":"One of the important problems of modern physical chemistry of high-temperature systems is to derive an equation of state to correctly predict the densities of liquid electrolytes over a wide pressure, temperature, and composition range. In addition to the basic repulsive and Coulomb contributions to pressure, this equation of state should take into account the most significant second-order effects caused by the interactions of ion charges with induced dipoles and the mutual orientation of induced dipoles in space. Here, an equation of state, which takes into account charge–dipole and dipole–dipole effects between ions by means of the thermodynamic perturbation theory based on a charged hard sphere reference model, is applied to calculate the temperature dependences of the densities of molten alkali metal bromides. This equation of state makes it possible to describe the change in the melt density with temperature with good accuracy. The calculation errors relative to the experimental dependences of density do not exceed 4% for all salts, and the best agreement is observed for molten lithium, sodium, and potassium bromides, which is explained form a physical standpoint. Taking into account the additional charge–dipole and dipole–dipole contributions to the pressure of melts is shown to improve the agreement of the calculation results with the reported data with allowance for the fact that only tabulated radii and polarizabilities are used in the calculations.","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2026 3","pages":"469 - 474"},"PeriodicalIF":0.3,"publicationDate":"2026-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148628436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermophysical and Optical Properties of the Praseodymium Trifluoride Solutions in a Molten Eutectic Mixture of Lithium, Sodium, and Potassium Fluorides 三氟化镨溶液在氟化锂、钠和钾熔融共晶混合物中的热物理和光学性质

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Russian Metallurgy (Metally) Pub Date : 2026-07-31 DOI: 10.1134/S0036029526700680

V. A. Neznanov, I. V. Korzun, V. A. Khokhlov, V. N. Dokutovich, V. A. Kochedykov

{"title":"Thermophysical and Optical Properties of the Praseodymium Trifluoride Solutions in a Molten Eutectic Mixture of Lithium, Sodium, and Potassium Fluorides","authors":"V. A. Neznanov, I. V. Korzun, V. A. Khokhlov, V. N. Dokutovich, V. A. Kochedykov","doi":"10.1134/S0036029526700680","DOIUrl":"10.1134/S0036029526700680","url":null,"abstract":"The thermophysical and optical properties of the praseodymium trifluoride solutions in a molten eutectic mixture of lithium, sodium, and potassium fluorides (FLiNaK) are experimentally studied in the PrF3 concentration range from 0 to 24 mol %, and the experimental results are discussed. The thermal effects revealed by thermal analysis (TG, DSC), a fragment of the FLiNaK–PrF3 phase diagram is constructed, the specific heat at constant pressure (cp) is determined, and the solubility of praseodymium trifluoride in the melts is estimated. The concentration dependence of the thermal conductivity of the FLiNaK–PrF3 melts is measured in the temperature range 823–1023 K, and their refractive indices and absorption coefficients are also measured in order to estimate the radiative contribution to heat transfer. The IR spectra of the praseodymium trifluoride solutions in the FLiNaK melt, which are cooled to room temperature, have a pronounced band at 618 cm–1, which is related to with the formation of complex ({text{PrF}}_{6}^{{ - 3}}) ions. The existence of complex ions manifests itself in the phase diagram and the concentration dependences of the heat capacity, thermal conductivity, refractive index, and absorption coefficient of the molten FLiNaK–PrF3 mixtures.","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2026 3","pages":"446 - 455"},"PeriodicalIF":0.3,"publicationDate":"2026-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148628442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Calculation of the Densities of Calcium Halides above Their Melting Temperatures Using Perturbation Theory 用摄动理论计算熔点以上卤化钙的密度

IF 0.3

Russian Metallurgy (Metally) Pub Date : 2026-07-31 DOI: 10.1134/S0036029526700771

A. G. Davydov

{"title":"Calculation of the Densities of Calcium Halides above Their Melting Temperatures Using Perturbation Theory","authors":"A. G. Davydov","doi":"10.1134/S0036029526700771","DOIUrl":"10.1134/S0036029526700771","url":null,"abstract":"An equation of state capable of describing the temperature dependences of the densities of halide melts containing multiply charged cations with a good accuracy is developed and tested. This equation of state can take into account both polarization effects and the dispersion interactions between ions in the melts. To consider these additional contributions to the pressure of the melts, we use a thermodynamic perturbation theory based on a multicomponent charged hard sphere mixture model. Using the calcium halide melts as an example, we show that taking into account charge–dipole and dipole–dipole corrections to pressure leads to an increase in their density by about 10%, which significantly improves the agreement between the calculated and experimental data. The obtained results are in good qualitative and quantitative agreement with the reported density dependences. The errors in their calculation for most melts under study do not exceed 2%, increasing to 5% only in the case of calcium chloride. Note that only the standard tabulated values of ionic radii and polarizabilities, as well as the constants characterizing dipole–dipole interactions, are used in calculating the melt density. Thus, taking into account the second-order effects by the statistical theory of liquids is shown to be justified from the point of view of both the quality of results and the low computational cost of calculations.","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2026 3","pages":"507 - 511"},"PeriodicalIF":0.3,"publicationDate":"2026-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148628687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of Surface Properties on the Efficiency of the Separation of Molten Metals in Capillaries 表面性质对毛细管中熔融金属分离效率的影响

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Russian Metallurgy (Metally) Pub Date : 2026-07-31 DOI: 10.1134/S0036029526700825

S. N. Uglev, N. P. Uglev

{"title":"Influence of Surface Properties on the Efficiency of the Separation of Molten Metals in Capillaries","authors":"S. N. Uglev, N. P. Uglev","doi":"10.1134/S0036029526700825","DOIUrl":"10.1134/S0036029526700825","url":null,"abstract":"The property of separation of metal melts in capillaries is considered in the context of a quantitative estimation of this effect in addition to the previously published experimental work, which showed the absence of the Marangoni–Gibbs effect in the tin–lead system when a temperature gradient of up to 10°C appears along the capillary height. Quantitative estimates of the influence of surface effects on separation in this system, which are carried out by three independent methods, indicate that the additional contribution from them can be from 10–3 to 10–2 wt %, while the characteristic value of separation for a 0.1-m-long capillary is 10 wt %. Experimental data demonstrate that, when the capillary is wetted by a melt, the separation effect is somewhat reduced but does not disappear. A quantitative estimation of the separation under the influence of the Soret effect is also carried out and shows the absence of noticeable separation of components at a small temperature gradient. For the aluminum–silicon system, the concentration of silicon in the upper part of the capillary indicates the dissolution of silicon in aluminum in the form of a solid component, since the experimental densities of the melts cannot be ensured in the range from 5 to 50 wt % silicon on mixing liquid components. The review of the versions of explanation of the separation of metallic melts in capillaries, which are based on known physical and chemical properties, points to their inconsistency, which suggests the existence of a previously unknown fundamental property in metallic melts (or liquids in general), which has not been taken into account in the theories of liquid state.","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2026 3","pages":"539 - 544"},"PeriodicalIF":0.3,"publicationDate":"2026-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148628653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Nondestructive Method for Determining the Corrosion Parameters of Steels in Lead 测定铅中钢腐蚀参数的无损方法

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Russian Metallurgy (Metally) Pub Date : 2026-07-31 DOI: 10.1134/S003602952670076X

O. A. Golosov, S. S. Khvostov, A. A. Osintseva, V. A. Tsygvintsev

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Effect of Mixed β, γ Irradiation on the Pitting Corrosion of AISI 316L Steel in Artificial Seawater at Various Chloride Ion Concentrations. Part 2: Testing at 70°C 混合β、γ辐照对aisi316l钢在不同氯离子浓度人工海水中点蚀的影响第2部分：在70°C下的测试

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Russian Metallurgy (Metally) Pub Date : 2026-07-31 DOI: 10.1134/S0036029526700746

Yu. V. Lapin, O. A. Golosov, S. S. Khvostov, O. I. Rebrin

{"title":"Effect of Mixed β, γ Irradiation on the Pitting Corrosion of AISI 316L Steel in Artificial Seawater at Various Chloride Ion Concentrations. Part 2: Testing at 70°C","authors":"Yu. V. Lapin, O. A. Golosov, S. S. Khvostov, O. I. Rebrin","doi":"10.1134/S0036029526700746","DOIUrl":"10.1134/S0036029526700746","url":null,"abstract":"Electrochemical studies are performed to determine the susceptibility of AISI 316L steel samples to pitting corrosion in diluted and saturated artificial seawater solutions. This steel is chosen as a structural material for KURION and SARRY adsorption columns for long-term storage of secondary radioactive waste at the Fukushima Daiichi NPP. The studies are carried out in accordance with the recommendations of the Russian State Standard GOST 9-912–89 in artificial seawater solutions with chloride ion contents of ~100, ~10 000, and ~29 000 ppm at 70°C. During the electrochemical studies, the steel samples are in contact with natural clinoptilolite in the absence or presence of mixed ionizing β, γ radiation from 137Cs and 90Sr radionuclides at a total dose rate of ~4.9 × 10−2 Gy/s. The electrochemical parameters of pitting corrosion of AISI 316L steel, which are obtained at 70°C as functions of the chloride ion content in water and the presence or absence of β, γ radiation, are compared with similar parameters determined earlier at 25°C.","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2026 3","pages":"481 - 489"},"PeriodicalIF":0.3,"publicationDate":"2026-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148628438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0