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Prospects of the Hydrometallurgical Processing of Laterite Nickel Ores with Selective Nickel and Cobalt Recovery
IF 0.4
Russian Metallurgy (Metally) Pub Date : 2025-03-19 DOI: 10.1134/S0036029524702732
Yu. V. Zablotskaya, G. B. Sadykhov, K. G. Anisonyan, A. S. Tuzhilin, M. Sh. Khasanov
{"title":"Prospects of the Hydrometallurgical Processing of Laterite Nickel Ores with Selective Nickel and Cobalt Recovery","authors":"Yu. V. Zablotskaya,&nbsp;G. B. Sadykhov,&nbsp;K. G. Anisonyan,&nbsp;A. S. Tuzhilin,&nbsp;M. Sh. Khasanov","doi":"10.1134/S0036029524702732","DOIUrl":"10.1134/S0036029524702732","url":null,"abstract":"<p>The hydrometallurgical processing of preliminarily reduced ferriferrous laterite (limonite) ores from the Buruktal deposit using weak solutions of sulfuric acid under atmospheric pressure with nickel and cobalt recovery to the solution is studied. The introduction of an ammonia reagent (NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub>, which forms complexes with Ni and Co, into the initial solution is shown to enhance the selectivity of the process. Sulfuric acid leaching at 90°C and pH 3.0 and 3.5 in the presence of 5% (NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub> for 2 h shows high recovery parameters: more than 90% for nickel and up to 70% for cobalt. The process is characterized by a decrease in the H<sub>2</sub>SO<sub>4</sub> consumption by four times compared to the known method of the sulfuric acid pressure leaching of ferriferrous oxidized nickel ores.</p>","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2024 7","pages":"1544 - 1549"},"PeriodicalIF":0.4,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143655273","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
Sliding Friction of Modified Powder Coatings and Steel Counterbodies under Cold Conditions
IF 0.4
Russian Metallurgy (Metally) Pub Date : 2025-03-19 DOI: 10.1134/S0036029524702859
D. I. Lebedev, N. F. Struchkov, G. G. Vinokurov, E. A. Osipov
{"title":"Sliding Friction of Modified Powder Coatings and Steel Counterbodies under Cold Conditions","authors":"D. I. Lebedev,&nbsp;N. F. Struchkov,&nbsp;G. G. Vinokurov,&nbsp;E. A. Osipov","doi":"10.1134/S0036029524702859","DOIUrl":"10.1134/S0036029524702859","url":null,"abstract":"<p>Wear tests and thermophysical measurements are conducted using powder coating–steel counterbody friction pairs under low climatic temperature conditions. The study reveals the laws governing the behavior of the operating temperature of the friction unit in cold environment. Data on the weight wear of coatings and counterbodies are obtained, and the characteristics of profiles are examined. Additionally, the structure of friction surfaces is analyzed. The study reveals the wear mechanisms on the contact friction surfaces of both coatings and counterbodies.</p>","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2024 7","pages":"1624 - 1630"},"PeriodicalIF":0.4,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143655185","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
Modeling of the Consequences of Lead Particle Deformation into Plates during Lead Oxidation under Surface Mechanical Action
IF 0.4
Russian Metallurgy (Metally) Pub Date : 2025-03-19 DOI: 10.1134/S0036029524702690
S. D. Pozhidaeva, A. M. Ivanov
{"title":"Modeling of the Consequences of Lead Particle Deformation into Plates during Lead Oxidation under Surface Mechanical Action","authors":"S. D. Pozhidaeva,&nbsp;A. M. Ivanov","doi":"10.1134/S0036029524702690","DOIUrl":"10.1134/S0036029524702690","url":null,"abstract":"<p>We investigated the effects of mechanical factors on the oxidation of lead in organic phases containing both molecular iodine and hydrogen peroxide, as well as in phases where hydrogen peroxide was the sole oxidizing agent. The study used single lead plates with varying weight and physical surface area, as well as sets of multiple plates with approximately equal total weight. Simulations assessed the potential outcomes of transforming bulk lead particles into thin plates during oxidation. The findings showed that, under the selected conditions, single plates were consumed according to zero-order macrokinetics, with reaction rates increasing as plate weight decreased and physical surface area increased. A similar trend was observed in sets of lead plates: as the number of plates increased, while maintaining a constant total weight, the process efficiency declined. Each set exhibited a distinct type of macrokinetics curve for lead consumption, ranging from auto-accelerated progression transitioning to a stationary or wave-like regime to auto-decelerated progression leading to a slow, near-zero-order stationary regime. Therefore, the transformation of bulk lead particles into thin plates during the process inherently slowed down the reaction, a limitation that could not be mitigated through external intervention.</p>","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2024 7","pages":"1516 - 1521"},"PeriodicalIF":0.4,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143655277","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
Determination of Conditions for the Occurrence of Delamination, a Surface Defect Occurring during Hot Rolling of Aluminum Alloy Strips
IF 0.4
Russian Metallurgy (Metally) Pub Date : 2025-03-19 DOI: 10.1134/S0036029524702963
D. N. Klepov, V. V. Yashin, I. A. Latushkin, E. V. Aryshenskii, Ya. A. Erisov
{"title":"Determination of Conditions for the Occurrence of Delamination, a Surface Defect Occurring during Hot Rolling of Aluminum Alloy Strips","authors":"D. N. Klepov,&nbsp;V. V. Yashin,&nbsp;I. A. Latushkin,&nbsp;E. V. Aryshenskii,&nbsp;Ya. A. Erisov","doi":"10.1134/S0036029524702963","DOIUrl":"10.1134/S0036029524702963","url":null,"abstract":"<p>The delamination defect occurring during rolling of aluminum alloys was studied. The defect was found to be formed due to the asymmetry of the deformation zone, and the factors influencing this phenomenon were described. The effect of these factors on the hot rolling deformation zone was analyzed using the Kolmogorov failure criterion.</p>","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2024 7","pages":"1694 - 1699"},"PeriodicalIF":0.4,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143655343","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
Scratch Testing of the Surface Layers of Materials and Coatings Using Acoustic Emission
IF 0.4
Russian Metallurgy (Metally) Pub Date : 2025-03-19 DOI: 10.1134/S003602952470277X
V. M. Matyunin, P. V. Volkov, A. Yu. Marchenkov, V. A. Barat, D. A. Zhgut, N. O. Tsvetkova
{"title":"Scratch Testing of the Surface Layers of Materials and Coatings Using Acoustic Emission","authors":"V. M. Matyunin,&nbsp;P. V. Volkov,&nbsp;A. Yu. Marchenkov,&nbsp;V. A. Barat,&nbsp;D. A. Zhgut,&nbsp;N. O. Tsvetkova","doi":"10.1134/S003602952470277X","DOIUrl":"10.1134/S003602952470277X","url":null,"abstract":"<p>A technique of scratch testing of the treated surface layers of materials is developed using diagrams of scratching with a diamond indenter recorded in the load–scratch length coordinates. This technique makes it possible to determine the scratch hardness, the specific energy of local fracture, and the adhesion resistance of the surface layers of materials and coatings. An effective use of scratch testing in combination with acoustic emission is shown.</p>","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2024 7","pages":"1567 - 1571"},"PeriodicalIF":0.4,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143655186","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 Milling Conditions and Negative Temperature on the Strength of Carbon Fiber Reinforced Polymer during Cyclic Bending Loading
IF 0.4
Russian Metallurgy (Metally) Pub Date : 2025-03-19 DOI: 10.1134/S0036029524702896
I. S. Bolotnikov, E. A. Kosenko
{"title":"Influence of Milling Conditions and Negative Temperature on the Strength of Carbon Fiber Reinforced Polymer during Cyclic Bending Loading","authors":"I. S. Bolotnikov,&nbsp;E. A. Kosenko","doi":"10.1134/S0036029524702896","DOIUrl":"10.1134/S0036029524702896","url":null,"abstract":"<p>The results of tests performed to estimate the change in the fatigue strength of carbon fiber reinforced polymer (CFRP) as functions of the milling conditions during its machining and of the influence of a negative temperature are presented. The tests are carried out on CFRP samples of three series, which differ in the cutting conditions (rate of milling cutter rotation at the same feed rate). Each series is prepared in three sets to estimate the strength change caused by holding at a positive temperature and at –50°C for 60 and 120 h. The tests are performed by cyclic bending three-point loading at a given bending flexure when stress changes are recorded every 5 × 10<sup>3</sup> cycle. The total number of cycles is 10<sup>5</sup> and the cyclic loading frequency is 5 Hz. The test results demonstrate that the CFRPs fabricated by milling at the lowest rate of milling cutter rotation have the best fatigue strength characteristics. A decrease in the rate of milling cutter rotation leads to an increase in the maximum bending flexure and to the best cutting surface quality. After holding at a negative temperature, the fracture of all series of samples occurs at a lower force and the maximum bending flexure increases. The influence of a negative temperature brings about an increase in the rate of decrease of strength with increasing loading cycles.</p>","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2024 7","pages":"1648 - 1653"},"PeriodicalIF":0.4,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143655191","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
Application of Ultrasonic Vibrations to Copper Plating
IF 0.4
Russian Metallurgy (Metally) Pub Date : 2025-03-19 DOI: 10.1134/S0036029524702847
R. I. Nigmetzyanov, S. K. Sundukov, A. V. Sukhov, D. S. Fatyukhin, A. A. Nechai
{"title":"Application of Ultrasonic Vibrations to Copper Plating","authors":"R. I. Nigmetzyanov,&nbsp;S. K. Sundukov,&nbsp;A. V. Sukhov,&nbsp;D. S. Fatyukhin,&nbsp;A. A. Nechai","doi":"10.1134/S0036029524702847","DOIUrl":"10.1134/S0036029524702847","url":null,"abstract":"<p>The influence of ultrasonic vibrations applied to an electrolyte during copper plating on micro- and submicrogeometric properties of a coating and characteristics of the electrodeposition process are studied. The altitude parameters of the coating roughness are found to decrease by 7.5–8.5 times, and the submicrostructural parameters are improved by 2 times with increasing copper deposition efficiency.</p>","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2024 7","pages":"1617 - 1623"},"PeriodicalIF":0.4,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143655268","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
Models for the Formation of Flatness Defects of Steel Strip during Its Rolling and Heat Treatment
IF 0.4
Russian Metallurgy (Metally) Pub Date : 2025-03-19 DOI: 10.1134/S0036029524703063
D. L. Shalaevskii
{"title":"Models for the Formation of Flatness Defects of Steel Strip during Its Rolling and Heat Treatment","authors":"D. L. Shalaevskii","doi":"10.1134/S0036029524703063","DOIUrl":"10.1134/S0036029524703063","url":null,"abstract":"<p>The article presents some known methods for assessing the type and amplitude of flatness defects of steel strips and analyzes models of flatness defects in these strips after their rolling and heat treatment. These models can be conditionally divided into four groups. The first group of such models allows one to estimate the presence of flatness defect by the difference in the elongation coefficients across the width of the strip. The models of the second group are based on the possibility of determining the best shape of the cross section of the strip. The models of the third group relate the causes of the loss of strip flatness to the technology of cooling the steel strip after rolling. In the fourth group of models, the main cause of the loss of strip flatness is indicated to be the parameters of the working and support rolls.</p>","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2024 7","pages":"1760 - 1764"},"PeriodicalIF":0.4,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143655338","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
Effect of Zirconium on the Structure and Properties of Deposited Titanium–Aluminum and Titanium–Aluminum–Silicon Alloys 锆对沉积钛铝合金和钛铝硅合金结构和性能的影响
IF 0.4
Russian Metallurgy (Metally) Pub Date : 2025-03-19 DOI: 10.1134/S0036029524702744
A. I. Kovtunov, V. V. El’tsov, Yu. Yu. Khokhlov, A. G. Bochkarev
{"title":"Effect of Zirconium on the Structure and Properties of Deposited Titanium–Aluminum and Titanium–Aluminum–Silicon Alloys","authors":"A. I. Kovtunov,&nbsp;V. V. El’tsov,&nbsp;Yu. Yu. Khokhlov,&nbsp;A. G. Bochkarev","doi":"10.1134/S0036029524702744","DOIUrl":"10.1134/S0036029524702744","url":null,"abstract":"<p>To increase the mechanical, manufacturing, and service properties of deposited titanium aluminides, additional alloying with zirconium is suggested. Alloying during argon-arc deposition of titanium aluminides in using SvA5 and SvAK12 filler wires is found to affect the geometrical parameters of a deposited weld bead and the chemical composition, structure, and properties of the deposited alloys.</p>","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2024 7","pages":"1550 - 1554"},"PeriodicalIF":0.4,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143655274","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
Development of Directional Solidification for High-Temperature and Intermetallic Alloy Castings (Review) 高温和金属间合金铸件定向凝固的发展（综述）
IF 0.4
Russian Metallurgy (Metally) Pub Date : 2025-03-19 DOI: 10.1134/S0036029524702677
E. M. Visik, E. V. Kolyadov
{"title":"Development of Directional Solidification for High-Temperature and Intermetallic Alloy Castings (Review)","authors":"E. M. Visik,&nbsp;E. V. Kolyadov","doi":"10.1134/S0036029524702677","DOIUrl":"10.1134/S0036029524702677","url":null,"abstract":"<p>The improvement of the technology of casting turbine blade castings with a directional and single-crystal structure, casting equipment, and the methods to improve the quality of castings are reviewed. The technology of directional solidification is shown to ensure the production of turbine blades from new nickel superalloys with high performance properties, which meet the requirements imposed on the parts of modern gas turbine engines. The requirements for the structure of turbine blades made of carbon-free alloys, unlike carbon-containing single-crystal alloys, and for acceptable deviations from a specified crystallographic orientation (CGO) of the blades are considered. The trends in the appearance of characteristic defects in the single-crystal structure of the blades are studied. The evolution of domestic and foreign melting and casting equipment for directional solidification is presented, and the conditions for the formation of a single-crystal fine structure of high-temperature alloys in the thin sections of blades with a new penetrating cooling method are discussed.</p>","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2024 7","pages":"1501 - 1507"},"PeriodicalIF":0.4,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143655270","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
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