MetalMat最新文献

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MetalMat Pub Date : 2025-09-22 DOI: 10.1002/metm.70018

引用次数: 0

Low-Temperature Thermochemical Treatments of Face-Centered Cubic Alloys: New Perspectives for Expanded Austenite From Austenitic Stainless Steels to High-Entropy Alloys 面心立方合金的低温热化学处理：从奥氏体不锈钢到高熵合金扩展奥氏体的新视角

MetalMat Pub Date : 2025-08-20 DOI: 10.1002/metm.70013

Francesca Borgioli

{"title":"Low-Temperature Thermochemical Treatments of Face-Centered Cubic Alloys: New Perspectives for Expanded Austenite From Austenitic Stainless Steels to High-Entropy Alloys","authors":"Francesca Borgioli","doi":"10.1002/metm.70013","DOIUrl":"https://doi.org/10.1002/metm.70013","url":null,"abstract":"Thermochemical treatments performed at low temperatures (< ∼500°C) have received increasing interest for the surface modification of austenitic stainless steels. In fact, when treatment media rich in nitrogen and/or carbon are used at these temperatures, the formation of chromium compounds is inhibited and the interstitial atoms are retained in the face-centered cubic lattice of austenite beyond the solubility limit. The obtained supersaturated solid solution, known as expanded austenite or S-phase, has high hardness and can maintain or even increase the corrosion resistance in many environments. In the international literature, many studies are present that highlight the effects of the formation of this phase on tribological properties, fatigue resistance, corrosion behavior, wettability, biocompatibility, and magnetic properties of austenitic stainless steels. However, using analogous treatment conditions, expanded austenite can be obtained in many other alloys having a matrix with a face-centered cubic lattice, such as austenitic steels, nickel and cobalt alloys, and the more recent medium- and high-entropy alloys, but the studies on this topic are mostly at their very beginning. In this review, the characteristics and properties of expanded austenite and of the modified surface layers in which it is present are analyzed and discussed, considering all the different alloys in which this supersaturated phase can be produced. The role of alloy elements in promoting or hindering the formation of expanded austenite and the competing compound precipitates is taken into account. The opportunities and challenges of the low-temperature treatments are highlighted, and possible future directions for the investigation are suggested.","PeriodicalId":100919,"journal":{"name":"MetalMat","volume":"2 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/metm.70013","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145110834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recent Progress in Magnetoelastic Fe2P-type Materials for Magnetocaloric Cooling 磁热冷却用磁弹性fe2p型材料的研究进展

MetalMat Pub Date : 2025-07-29 DOI: 10.1002/metm.70012

King Yin Ho, Fengqi Zhang, Xuefei Miao, Niels van Dijk, Ekkes Brück, Yang Ren

{"title":"Recent Progress in Magnetoelastic Fe2P-type Materials for Magnetocaloric Cooling","authors":"King Yin Ho, Fengqi Zhang, Xuefei Miao, Niels van Dijk, Ekkes Brück, Yang Ren","doi":"10.1002/metm.70012","DOIUrl":"https://doi.org/10.1002/metm.70012","url":null,"abstract":"Solid-state magnetocaloric cooling attracts increasing attention as a novel technique for its high efficiency in energy conversion and its sustainability. Several high-quality magnetocaloric materials (MCMs) have been found, but among these MCMs, (Mn,Fe)2(P,Si)-based materials are one of the most promising candidates for its giant magnetocaloric effect (GMCE), noncritical components, and tuneable Curie temperature (TC) around room temperature. To further accelerate its practical market applications, a lot of studies have been made to enhance the GMCE, tune TC, and reduce the thermal hysteresis (ΔThys). This review mainly focuses on introducing the latest efforts to optimize the GMCE performance of this material family, including doping with different elements, microstructural improvements, and practical manufacturing techniques. Besides that, we further suggest possible approaches to boost the material engineering and highlight promising efforts of applying machine learning in the search for the optimal composition and structure of (Mn,Fe)2(P,Si)-based MCMs. This bridges the gap between fundamental research and engineering to advance the magnetocaloric energy conversion technology closer to real applications.","PeriodicalId":100919,"journal":{"name":"MetalMat","volume":"2 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/metm.70012","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145111290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recent Advances and Challenge of Bismuth-Based Architectures for Aqueous Anion Storage 基于铋的阴离子存储体系的最新进展和挑战

MetalMat Pub Date : 2025-07-21 DOI: 10.1002/metm.70007

Jinhao Xie, Songkai Li, Qiyu Liu, Zishou Zhang, Xihong Lu

{"title":"Recent Advances and Challenge of Bismuth-Based Architectures for Aqueous Anion Storage","authors":"Jinhao Xie, Songkai Li, Qiyu Liu, Zishou Zhang, Xihong Lu","doi":"10.1002/metm.70007","DOIUrl":"https://doi.org/10.1002/metm.70007","url":null,"abstract":"Bismuth-based materials have emerged as promising candidates for aqueous anion storage, addressing critical challenges in conventional battery systems such as safety risks, resource scarcity, and environmental concerns. This review comprehensively analyzes recent advancements in aqueous bismuth-based batteries (ABBs), focusing on anion-mediated storage mechanisms involving hydroxyl, halide, sulfide, phosphate, and carbonate ions. Key advantages of bismuth include low toxicity, cost-effectiveness, minimal volume expansion, and multi-electron redox capabilities enabling high theoretical capacities. However, practical deployment remains hindered by capacity fade, insufficient mass loading, and electrolyte instability. The discussion highlights material design strategies, such as nanostructuring, heterojunction engineering, and lattice strain modulation, to enhance conductivity, cycling stability, and rate performance. Comparative analyses reveal trade-offs between charge carrier kinetics, capacity, and stability with halogen-based systems excelling in rate capability and multivalent anions offering higher capacities. The further challenges and further prospects are also discussed in the end. By bridging fundamental insights with scalable innovations, this work outlines pathways to realize high-energy, durable, and environmentally sustainable Bi-based ABBs for grid-scale and portable energy storage.","PeriodicalId":100919,"journal":{"name":"MetalMat","volume":"2 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/metm.70007","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145111231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Novel Approach to Lithium Extraction From Spodumene by Combining Maleic Acid Leaching and Cyanex 936P Solvent Extraction 顺丁酸浸出-氰酸盐936P萃取锂辉石中锂的新工艺

MetalMat Pub Date : 2025-07-13 DOI: 10.1002/metm.70011

Sara El Hakim, Aurelien Randi, Jérôme Sterpenich, Alexandre Chagnes

{"title":"A Novel Approach to Lithium Extraction From Spodumene by Combining Maleic Acid Leaching and Cyanex 936P Solvent Extraction","authors":"Sara El Hakim, Aurelien Randi, Jérôme Sterpenich, Alexandre Chagnes","doi":"10.1002/metm.70011","DOIUrl":"https://doi.org/10.1002/metm.70011","url":null,"abstract":"This paper explores a novel approach to lithium recovery from spodumene, a lithium-bearing mineral. Instead of traditional sulfuric acid leaching, organic acids—specifically maleic acid—are investigated for efficient lithium extraction. The study examines the effects of various parameters on leaching efficiency, including maleic acid concentration, solid-to-liquid ratio, time, and temperature. The results show that using 2 mol L−1 maleic acid, despite being less acidic than sulfuric acid, demonstrates promising leaching performance at 110°C with a solid-to-liquid ratio (S/L) of 80 g/L. After neutralization at pH 13 with sodium hydroxide to remove impurities (Mg, Mn, Fe, Si, and Al), solvent extraction using 30% (v/v) Cyanex 936P diluted in kerosene—a highly selective extractant for lithium—was performed to further purify the lithium-containing leachate and extract lithium. Following stripping with 2 mol L−1 HCl, the resulting stripping solution containing lithium can undergo classical precipitation steps to remove calcium and precipitate lithium as lithium carbonate.","PeriodicalId":100919,"journal":{"name":"MetalMat","volume":"2 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/metm.70011","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145111116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Solar-Powered Remediation of Carcinogenic Chromium(VI) and Methylene Blue Using Ferromagnetic Ni12P5 and Porous Ni12P5-rGO Nanostructures 利用铁磁Ni12P5和多孔Ni12P5- rgo纳米结构太阳能修复致癌性铬（VI）和亚甲基蓝

MetalMat Pub Date : 2025-07-02 DOI: 10.1002/metm.70010

Omkar V. Vani, Anil M. Palve

{"title":"Solar-Powered Remediation of Carcinogenic Chromium(VI) and Methylene Blue Using Ferromagnetic Ni12P5 and Porous Ni12P5-rGO Nanostructures","authors":"Omkar V. Vani, Anil M. Palve","doi":"10.1002/metm.70010","DOIUrl":"https://doi.org/10.1002/metm.70010","url":null,"abstract":"This study explores the potential of magnetic nickel phosphide (Ni12P5) and its porous reduced graphene oxide nanocomposite (Ni12P5-rGO) as photocatalysts for environmental remediation. A vibrating-sample magnetometer (VSM) was used to study the magnetic properties, resulting in the hysteresis loop indicating the ferromagnetic nature of the material. The materials were tested for their ability to reduce hexavalent chromium Cr(VI), a toxic pollutant, to the less harmful trivalent chromium Cr(III) under natural sunlight, using formic acid as a hole scavenger. The Ni12P5 and Ni12P5-rGO catalysts achieved complete Cr(VI) reduction in 160 and 130 min, respectively. Additionally, the photocatalytic degradation of methylene blue, a model organic pollutant, was investigated. The catalysts degraded 78.33% and 82.98% of a 10 mg/L methylene blue solution within 220 min. A mechanism for both the Cr(VI) reduction and methylene blue degradation processes is proposed. Reactive species trapping experiments were conducted to identify the primary active species, such as superoxide radical (<math></math>), hydroxyl radical (<math></math>), and photogenerated holes (h+), involved in the methylene blue degradation pathway.","PeriodicalId":100919,"journal":{"name":"MetalMat","volume":"2 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/metm.70010","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145110878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Machine Learning Helps Data Mining to Build Descriptor Databases for Lithium-Ion Batteries 机器学习帮助数据挖掘构建锂离子电池描述符数据库

MetalMat Pub Date : 2025-06-28 DOI: 10.1002/metm.70008

Xiran Zhao, Zhaomeng Liu, Lukang Zhao, Xuan-Wen Gao, Tianzhen Ren, Wen-Bin Luo

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MetalMat Pub Date : 2025-06-26 DOI: 10.1002/metm.70009

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Review on Magneto-Electrodeposition: Tailoring Material Properties for Enhanced Functionalities and Applications 磁电沉积研究进展：增强功能和应用的裁剪材料特性

MetalMat Pub Date : 2025-06-16 DOI: 10.1002/metm.70004

Jerom Samraj Abraham, N. Rajasekaran

引用次数: 0