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Selective Separation Mechanism of Arsenic and Antimony in Lead-Zinc Smelting Dust 铅锌冶炼粉尘中砷锑的选择性分离机理
IF 2.3 4区 材料科学
JOM Pub Date : 2025-07-25 DOI: 10.1007/s11837-025-07562-1
Lei Mei, YaMing Zhou, JiaRun Zhang, ZhiHong Liu, ZhiYong Liu
{"title":"Selective Separation Mechanism of Arsenic and Antimony in Lead-Zinc Smelting Dust","authors":"Lei Mei,&nbsp;YaMing Zhou,&nbsp;JiaRun Zhang,&nbsp;ZhiHong Liu,&nbsp;ZhiYong Liu","doi":"10.1007/s11837-025-07562-1","DOIUrl":"10.1007/s11837-025-07562-1","url":null,"abstract":"<div><p>The smelting process of lead (Pb) and zinc (Zn) affords various types of dusts, which often contain high concentrations of arsenic (As) and antimony (Sb) introduced into the system from raw materials. These dusts also contain economically valuable elements such as bismuth, tin and tellurium. Herein, we explored an efficient As removal method to facilitate the comprehensive recovery of valuable metals from dusts produced during Pb and Zn smelting. As- and Sb-bearing dust produced during the Pb-Zn smelting process was subjected to alkaline oxidative pressure leaching. The total leaching efficiency of As (measured from both the leaching and washing solutions) increased to 98.26%, whereas that of Sb was &lt; 0.5%. During the reaction, trivalent As was oxidised to pentavalent As, which transformed into sodium arsenate (Na<sub>3</sub>AsO<sub>4</sub>·10H<sub>2</sub>O). As the solubility of Na<sub>3</sub>AsO<sub>4</sub>·10H<sub>2</sub>O reduces in highly alkaline solutions, this led to its precipitation and a corresponding reduction in the leaching efficiency of As. However, after washing, the alkalinity of the solution changed, facilitating the dissolution of Na<sub>3</sub>AsO<sub>4</sub>·10H<sub>2</sub>O. In addition, under high alkalinity, Sb converts to sodium antimonate. Furthermore, at low alkalinity, the solubility behaviours of Na<sub>3</sub>AsO<sub>4</sub>·10H<sub>2</sub>O and sodium antimonate are inversely related, facilitating their effective separation.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 10","pages":"7696 - 7709"},"PeriodicalIF":2.3,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11837-025-07562-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145078981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of Bending Angle on Defect Formation in ER4043 Aluminum Alloy in Wire Arc Additive Manufacturing 电弧增材制造中弯曲角度对ER4043铝合金缺陷形成的影响
IF 2.3 4区 材料科学
JOM Pub Date : 2025-07-21 DOI: 10.1007/s11837-025-07565-y
Jiaxin Shi, Milan Brandt, Andrey Molotnikov, Mark Easton
{"title":"Effect of Bending Angle on Defect Formation in ER4043 Aluminum Alloy in Wire Arc Additive Manufacturing","authors":"Jiaxin Shi,&nbsp;Milan Brandt,&nbsp;Andrey Molotnikov,&nbsp;Mark Easton","doi":"10.1007/s11837-025-07565-y","DOIUrl":"10.1007/s11837-025-07565-y","url":null,"abstract":"<div><p>Direct energy deposition using an arc source (DED-Arc), also known as wire arc additive manufacturing, is a promising technique to fabricate large engineering components due to the high deposition rates. ER4043 aluminum alloy is widely used as a commercial feedstock for DED-Arc. However, defects such as porosity and cracking pose significant challenges and affect process reliability, particularly in real parts with more complex geometries. This study investigates the influence of the deposited geometry (bending angle in zig-zag tracks) on microstructure and defect formation in ER4043 fabricated by DED-Arc. Experimental results show that increasing bending deviations in bent corners intensify defect formation because of the thermal profile variations and localized stress accumulation during solidification. Additionally, distinct grain morphologies and defect distributions are observed at the interior and anterior edges of bent corners. These findings highlight that zig-zag tracks can be used as a practical approach for improving process reliability and defect control for industrial-scale DED-Arc in aluminum components.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 10","pages":"7264 - 7273"},"PeriodicalIF":2.3,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11837-025-07565-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145078837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of Oxygen on the Phase Reconstruction of Low-Grade Complicated Niobium Resources During Cooling Process 氧对低品位复杂铌资源冷却过程中相重构的影响
IF 2.3 4区 材料科学
JOM Pub Date : 2025-07-18 DOI: 10.1007/s11837-025-07541-6
Wensheng Han, Mengjie Ran, Xiang Lu, Chuling Jiang, Yulin Zhou, Wen Chen
{"title":"Effects of Oxygen on the Phase Reconstruction of Low-Grade Complicated Niobium Resources During Cooling Process","authors":"Wensheng Han,&nbsp;Mengjie Ran,&nbsp;Xiang Lu,&nbsp;Chuling Jiang,&nbsp;Yulin Zhou,&nbsp;Wen Chen","doi":"10.1007/s11837-025-07541-6","DOIUrl":"10.1007/s11837-025-07541-6","url":null,"abstract":"<div><p>Aiming at the low-grade complicated niobium (Nb) resources in Bayan Obo with complex mineral paragenesis, the phase reconstruction method through high-temperature melting–cooling technology is a promising strategy for changing the occurrence mode of niobium. However, the effects of oxygen on phase reconstruction are still unclear. In this study, the effects of oxygen on the Nb-bearing phase reconstruction were investigated by turning the oxygen concentration from 0% to 100%. Through adjusting the atmosphere from argon (Ar) into oxygen (O<sub>2</sub>), the enriched phase of Nb was transformed into calciobetafite (Ca<sub>2</sub>(Ti,Nb)<sub>2</sub>O<sub>7</sub>) from loparite ((Ce,Na,Ca)(Nb,Ti)O<sub>3</sub>). In addition, oxygen is beneficial in reducing the content of impurity elements in the pyrochlore-type Ca<sub>2</sub>(Ti,Nb)<sub>2</sub>O<sub>7</sub> phase and improving the co-enrichment of Nb and cerium (Ce). The mechanism of phase transformation under different atmospheres has been discussed through the process of crystallization. In addition, the crystallization of Fe<sub>2</sub>O<sub>3</sub> under a high oxygen concentration provides a clean recovery of iron from tailings. This study found that adjusting the oxygen concentration of the crystallization process is a controllable method of niobium-bearing phase reconstruction. In addition, this study provides useful information for the phase reconstruction of low-grade complicated niobium and rare earth resources.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 9","pages":"6443 - 6453"},"PeriodicalIF":2.3,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144897091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Powder Metallurgy Fabrication of Multimodal-Grained AA2024 Aluminum Alloy and Microstructural Response to Powder Size Control 多模态晶粒AA2024铝合金的粉末冶金制备及粉末粒度控制对显微组织的响应
IF 2.3 4区 材料科学
JOM Pub Date : 2025-07-18 DOI: 10.1007/s11837-025-07596-5
Jun Xi Li, Feng Li, Yuan Qi Li, Shun Luo, Hai Bo Wang
{"title":"Powder Metallurgy Fabrication of Multimodal-Grained AA2024 Aluminum Alloy and Microstructural Response to Powder Size Control","authors":"Jun Xi Li,&nbsp;Feng Li,&nbsp;Yuan Qi Li,&nbsp;Shun Luo,&nbsp;Hai Bo Wang","doi":"10.1007/s11837-025-07596-5","DOIUrl":"10.1007/s11837-025-07596-5","url":null,"abstract":"<div><p>In order to break the limitations of traditional homogeneous material modification, this paper proposes the preparation of homogeneous and heterogeneous bimodal structural materials by powder metallurgy. AA2024 aluminum alloy powder was mixed with different particle sizes in a certain proportion by ball milling, and the homogeneous mixed crystal material was prepared by hot-press sintering. The results indicate that, by adjusting the ratio of coarse and fine powder, the precise control of the mixed crystal structure composed of coarse and fine crystals is realized. The mixed crystal structure causes additional hardening, which increases the strength and malleability of the mixed crystal material. When the mass ratio of coarse to fine powder is 5:5, the tensile strength is ~ 201.83 MPa, the yield strength is ~ 157.45 MPa, and the elongation is ~ 15.86%, which is ~ 10.45% higher than the fine crystal strength and 1.15 times higher than the elongation. The introduction of a mixed crystal structure breaks the limitation of single modification, the coarse and fine grains coordinate with each other, the soft domain represented by the coarse crystals delays the crack expansion and improves the plasticity, and a hard domain represented by the fine crystals disperses the stress and ensures the strength of the material.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 10","pages":"7642 - 7654"},"PeriodicalIF":2.3,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145078780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Understanding the Collective Effect of Dissolved Ions on the Surface Chemistry of Galena Flotation 了解溶解离子对方铅矿浮选表面化学的集体效应
IF 2.3 4区 材料科学
JOM Pub Date : 2025-07-18 DOI: 10.1007/s11837-025-07579-6
Can Gungoren, Saleban Mohamed Muse, Mert Terzi, Mehmet Faruk Eskibalci, Ilgin Kursun, Orhan Ozdemir
{"title":"Understanding the Collective Effect of Dissolved Ions on the Surface Chemistry of Galena Flotation","authors":"Can Gungoren,&nbsp;Saleban Mohamed Muse,&nbsp;Mert Terzi,&nbsp;Mehmet Faruk Eskibalci,&nbsp;Ilgin Kursun,&nbsp;Orhan Ozdemir","doi":"10.1007/s11837-025-07579-6","DOIUrl":"10.1007/s11837-025-07579-6","url":null,"abstract":"<div><p>This study aimed to investigate the collective effect of commonly found ions in galena flotation. For this purpose, contact angle, bubble–particle attachment time, zeta potential measurements, micro-flotation experiments, and dynamic froth stability analyses, were carried out using artificial plant waters (APWs) at various ion concentrations. As a result of the contact angle and bubble-particle attachment time measurements, the optimum KEX concentration was determined as 50 g/t. The zeta potential measurements, micro-flotation experiments, and DFS analyses in the presence of APWs showed that the zeta potential of galena became less negative in the presence of APWs at greater ion concentrations. The flotation recovery of galena (106 × 75 µm) in the absence of APW and BG increased from 12.1 to 45.9% in the presence of APW1. The DFS analyses indicated that considerably higher froth heights up to 7.7 mm can be obtained in the presence of APWs than in the presence of BG (6.6 mm), related to the ionic strength. The overall experimental results of this study indicated that dissolved ions helped the formation of stable bubbles in the pulp and froth phases, which improved the flotation recovery of galena.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 10","pages":"7713 - 7723"},"PeriodicalIF":2.3,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145078820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Water Pollution Remediation: Efficient Photocatalytic Degradation of Direct Yellow 12 Dye Using Poly(o-ethylaniline)/TiO2/rGO Nanocomposites 水污染修复:聚(邻乙基苯胺)/TiO2/氧化石墨烯纳米复合材料高效光催化降解直接黄12染料
IF 2.3 4区 材料科学
JOM Pub Date : 2025-07-17 DOI: 10.1007/s11837-025-07571-0
Muhammad Fayyaz Farid, Mirza Nadeem Ahmad, Muhammad Naveed Anjum
{"title":"Water Pollution Remediation: Efficient Photocatalytic Degradation of Direct Yellow 12 Dye Using Poly(o-ethylaniline)/TiO2/rGO Nanocomposites","authors":"Muhammad Fayyaz Farid,&nbsp;Mirza Nadeem Ahmad,&nbsp;Muhammad Naveed Anjum","doi":"10.1007/s11837-025-07571-0","DOIUrl":"10.1007/s11837-025-07571-0","url":null,"abstract":"<div><p>Water pollution has become a global issue due to growing industrial activities, particularly the release of toxic dyes in textile wastewater. Therefore, water treatment is inevitable to conserve and reuse the wastewater. In our study, a photocatalytic technique was designed to degrade the commonly used direct yellow 12 (DY-12) dye present in aqueous media using polymeric composite materials based on poly(<i>o</i>-ethylaniline)/titanium dioxide/reduced graphene oxide (POEA/TiO<sub>2</sub>/rGO). The composites were analyzed by Fourier-transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) for the confirmation of the composition and the structural features, respectively. Furthermore, scanning electron microscopy (SEM) was employed to observe the surface morphology of the materials, while the photocatalytic activity of the composites was evaluated for the degradation of DY-12 dye under ultraviolet (UV) irradiation. Then, the factors affecting the photocatalytic activity (pH = 2, dye concentration = 100 ppm, catalyst dose = 500 mg/L, oxidant concentration = 15 g/L, temperature 60 °C, and irradiation time = 60 min) were optimized which achieved up to 98% removal of the target dye by the POEA/TiO<sub>2</sub>/rGO<sub>25%</sub> catalyst. After photocatalytic degradation, total organic carbon (TOC), chemical oxygen demand (COD), and FTIR analysis were performed to ensure the removal of the dye. Moreover, kinetic studies demonstrated that the degradation process followed the first-order rate mechanism.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 10","pages":"7668 - 7683"},"PeriodicalIF":2.3,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145078865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Novel Technology to Deposition Diamond-Like Carbon Thin Films: Cathodic Cylinder Plasma Deposition 一种沉积类金刚石薄膜的新技术:阴极圆柱体等离子沉积
IF 2.3 4区 材料科学
JOM Pub Date : 2025-07-16 DOI: 10.1007/s11837-025-07572-z
Anthunes Íkaro de Araújo, Igor Oliveira Nascimento, Michelle Cequeira Feitor, Maxwell Santana Libório, Álvaro Albueno da Silva Linhares, Pâmala Samara Vieira, Salete Martins Alves, Rômulo Ribeiro Magalhães de Sousa, Cleânio da Luz Lima, Ediones Maciel de Sousa, Thercio Henrique de Carvalho Costa
{"title":"A Novel Technology to Deposition Diamond-Like Carbon Thin Films: Cathodic Cylinder Plasma Deposition","authors":"Anthunes Íkaro de Araújo,&nbsp;Igor Oliveira Nascimento,&nbsp;Michelle Cequeira Feitor,&nbsp;Maxwell Santana Libório,&nbsp;Álvaro Albueno da Silva Linhares,&nbsp;Pâmala Samara Vieira,&nbsp;Salete Martins Alves,&nbsp;Rômulo Ribeiro Magalhães de Sousa,&nbsp;Cleânio da Luz Lima,&nbsp;Ediones Maciel de Sousa,&nbsp;Thercio Henrique de Carvalho Costa","doi":"10.1007/s11837-025-07572-z","DOIUrl":"10.1007/s11837-025-07572-z","url":null,"abstract":"<div><p>This study investigates the influence of deposition temperature on the formation of diamond-Like carbon (DLC) films on AISI 4340 steel using the cathodic cylinder plasma deposition (CCyPD) technique. The films were deposited in an acetylene atmosphere at 350°C, 400°C, and 450°C, and the samples were characterized using Raman spectroscopy, X-ray diffraction (XRD), Vickers hardness testing, and friction coefficient measurements. The results indicate that increasing the deposition temperature significantly impacts the microstructure and tribological properties of the DLC films. At 450°C, the films exhibited higher hardness due to the increased concentration of <i>sp</i><sup>3</sup> carbon, which led to a denser and more rigid structure. However, a notable reduction in film thickness was observed, likely due to increased carbon deposition efficiency and structural densification. The film deposited at 400°C demonstrated the optimal balance between hardness and wear resistance. These findings highlight the critical role of temperature control in optimizing the mechanical and tribological properties of DLC films for various industrial applications.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 9","pages":"6387 - 6399"},"PeriodicalIF":2.3,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144897080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of Y Doping on Phase Structure, Microstructure and Electrical Conductivity of La10−xYxSi6O27 (x = 0, 0.1, 0.2, 0.3) Y掺杂对La10−xYxSi6O27 (x = 0,0.1, 0.2, 0.3)相结构、微观结构和电导率的影响
IF 2.3 4区 材料科学
JOM Pub Date : 2025-07-15 DOI: 10.1007/s11837-025-07582-x
Dongliang Li, Xiangnan Wang
{"title":"Effects of Y Doping on Phase Structure, Microstructure and Electrical Conductivity of La10−xYxSi6O27 (x = 0, 0.1, 0.2, 0.3)","authors":"Dongliang Li,&nbsp;Xiangnan Wang","doi":"10.1007/s11837-025-07582-x","DOIUrl":"10.1007/s11837-025-07582-x","url":null,"abstract":"<div><p>La<sub>10−<i>x</i></sub>Y<sub><i>x</i></sub>Si<sub>6</sub>O<sub>27</sub> (<i>x</i> = 0, 0.1, 0.2, 0.3) ceramics were prepared by a two-step ball-milling method. This study aims to address the research gap in Y<sup>3+</sup> doping of lanthanum silicate systems by systematically investigating the synergistic effects of Y<sup>3+</sup> doping concentration on the phase structure stability, microstructural evolution, and total conduction behavior of apatite-type electrolyte materials. La<sub>10-<i>x</i></sub>Y<sub><i>x</i></sub>Si<sub>6</sub>O<sub>27</sub> belongs to the hexagonal apatite structure, while the La<sub>2</sub>SiO<sub>5</sub> secondary phase emerged when <i>x</i> ≥ 0.2. As the Y content continues to increase, a few pores appear in the sintered body, and Y ions are effectively integrated into the lattice of lanthanum silicate. The <i>x</i> = 0.1 sample demonstrates the maximum conductivity of 7.26 × 10<sup>-3</sup> S cm<sup>−1</sup> at 800°C, whereas the <i>x</i> = 0.2 composition shows an order-of-magnitude decrease in conductivity due to pore formation.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 9","pages":"6530 - 6534"},"PeriodicalIF":2.3,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144897079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An Empirical Model for Water Recovery in Column Flotation Based on Operation Parameters 基于操作参数的柱浮选水回收经验模型
IF 2.3 4区 材料科学
JOM Pub Date : 2025-07-15 DOI: 10.1007/s11837-025-07549-y
Reza Zolfaghari, Mohammad Karamoozian
{"title":"An Empirical Model for Water Recovery in Column Flotation Based on Operation Parameters","authors":"Reza Zolfaghari,&nbsp;Mohammad Karamoozian","doi":"10.1007/s11837-025-07549-y","DOIUrl":"10.1007/s11837-025-07549-y","url":null,"abstract":"<div><p>Nowadays, with the processing of low-quality and complex minerals, the entrainment of fine gangue solids has become a critical issue in column flotation. Water recovery (<span>(R_{{text{w}}} )</span>) contributed to the entrainment and affected concentrate recovery. In this study, batch surface response column flotation tests have been carried out to question the primary and composed effects of solid content, frother dosage, airflow rate, and collector dosage on the water recovery by utilizing a mix of released quartz and gangue mineral in a 10-L batch column flotation. The results showed that <span>(R_{{text{w}}})</span> was affected by (1) airflow rate, (2) solid content, (3) frother dosage, (4) the interaction between solid content and frother dosage, and (5) it was the interaction between solid content and collector dosage (in order of decreasing effects). It was interesting to note that, as the airflow rate in column flotation increased, water recovery became more sensitive to frother dosage. An experimental model for water recovery based on operational parameters is presented in this article. This study addresses the lack of a comprehensive model for predicting recovery by developing an integrated, data-driven approach that considers simultaneous variations in multiple operational parameters. A significant change was observed on <span>(R_{{text{w}}})</span>. The observed effects and interactions, along with the influence of froth residence time, indicate that accurate prediction of water recovery is possible when both water drainage and the influx of water from the pulp into the froth phase are taken into account. For that reason, it could be assumed that the froth residence time influenced the <span>({R}_{{text{ent}},i})</span> by <span>(R_{{text{w}}})</span>, but did not alter the relative move of solids to water (i.e., the entrainment).</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 10","pages":"7610 - 7625"},"PeriodicalIF":2.3,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145079001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Comparative Study on the Effect of Potassium on Grain Refinement and Wear Performance of A319 Aluminum Alloy 钾对A319铝合金晶粒细化及磨损性能影响的对比研究
IF 2.3 4区 材料科学
JOM Pub Date : 2025-07-15 DOI: 10.1007/s11837-025-07597-4
Mostafa Karamouz, Seyed Mohammad Jesmani, Majid Bagheri
{"title":"A Comparative Study on the Effect of Potassium on Grain Refinement and Wear Performance of A319 Aluminum Alloy","authors":"Mostafa Karamouz,&nbsp;Seyed Mohammad Jesmani,&nbsp;Majid Bagheri","doi":"10.1007/s11837-025-07597-4","DOIUrl":"10.1007/s11837-025-07597-4","url":null,"abstract":"<div><p>The influence of potassium (K) addition on the structure, hardness and wear characteristics of A319 aluminum alloy was examined. Various amounts of potassium (0, 0.03, 0.06 and 0.09 wt.%) were added to the A319 melt, and the evolution of the microstructure was studied by both optical and scanning electron microscopy. In addition, mechanical properties were assessed through hardness testing and pin-on-disc wear experiments. The results showed that K addition led to substantial grain refinement and altered the eutectic silicon morphology from a coarse, plate-like structure to a fine, interconnected form. The best grain refinement and wear resistance were observed at 0.06 wt.% K, which exhibited the highest hardness value (72 VHN) and the lowest wear rate (37 µg/m). However, increasing the K content to 0.09 wt.% caused porosity formation, reducing the hardness and wear resistance of the alloy. These results prove the importance of controlling the K concentration to achieve optimal microstructure and wear properties in A319 alloys.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 10","pages":"7684 - 7695"},"PeriodicalIF":2.3,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145078778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","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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