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Facile synthesis of composite polyferric magnesium–silicate–sulfate coagulant with enhanced performance in water and wastewater Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-03-14 Xiangtao Huo, Rongxia Chai, Lizheng Gou, Mei Zhang, Min Guo
The coagulation process is a widely applied technology in water and wastewater treatment. Novel composite polyferric magnesium–silicate–sulfate (PFMS) coagulants were synthesized using Na2SiO3·9H2O, Fe2(SO4)3, and MgSO4 as raw materials in this paper. The effects of aging time, Fe:Si:Mg, and OH:M molar ratios (M represents the metal ions) on the coagulation performance of the as-prepared PFMS were
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Review on the plastic instability of medium-Mn steels for identifying the formation mechanisms of Lüders and Portevin–Le Chatelier bands Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-03-08
Abstract Plastic instability, including both the discontinuous yielding and stress serrations, has been frequently observed during the tensile deformation of medium-Mn steels (MMnS) and has been intensively studied in recent years. Unfortunately, research results are controversial, and no consensus has been achieved regarding the topic. Here, we first summarize all the possible factors that affect
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Flow characteristics and hot workability of a typical low-alloy high-strength steel during multi-pass deformation Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-02-17 Mingjie Zhao, Lihong Jiang, Changmin Li, Liang Huang, Chaoyuan Sun, Jianjun Li, Zhenghua Guo
Heavy components of low-alloy high-strength (LAHS) steels are generally formed by multi-pass forging. It is necessary to explore the flow characteristics and hot workability of LAHS steels during the multi-pass forging process, which is beneficial to the formulation of actual processing parameters. In the study, the multi-pass hot compression experiments of a typical LAHS steel are carried out at a
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Structural and magnetic properties of micropolycrystalline cobalt thin films fabricated by direct current magnetron sputtering Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-02-17 Kerui Song, Zhou Li, Mei Fang, Zhu Xiao, Qian Lei
Pure cobalt (Co) thin films were fabricated by direct current magnetron sputtering, and the effects of sputtering power and pressure on the microstructure and electromagnetic properties of the films were investigated. As the sputtering power increases from 15 to 60 W, the Co thin films transition from an amorphous to a polycrystalline state, accompanied by an increase in the intercrystal pore width
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Prediction model for corrosion rate of low-alloy steels under atmospheric conditions using machine learning algorithms Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-02-17 Jingou Kuang, Zhilin Long
This work constructed a machine learning (ML) model to predict the atmospheric corrosion rate of low-alloy steels (LAS). The material properties of LAS, environmental factors, and exposure time were used as the input, while the corrosion rate as the output. 6 different ML algorithms were used to construct the proposed model. Through optimization and filtering, the eXtreme gradient boosting (XGBoost)
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Preferentially selective extraction of lithium from spent LiCoO2 cathodes by medium-temperature carbon reduction roasting Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-02-17 Daixiang Wei, Wei Wang, Longjin Jiang, Zhidong Chang, Hualei Zhou, Bin Dong, Dekun Gao, Minghui Zhang, Chaofan Wu
Lithium recovery from spent lithium-ion batteries (LIBs) have attracted extensive attention due to the skyrocketing price of lithium. The medium-temperature carbon reduction roasting was proposed to preferential selective extraction of lithium from spent Li-CoO2 (LCO) cathodes to overcome the incomplete recovery and loss of lithium during the recycling process. The LCO layered structure was destroyed
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Structural properties of residual carbon in coal gasification fine slag and their influence on flotation separation and resource utilization: A review Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-02-17 Rui Han, Anning Zhou, Ningning Zhang, Kaiqiang Guo, Mengyan Cheng, Heng Chen, Cuicui Li
Coal gasification fine slag (FS) is a typical solid waste generated in coal gasification. Its current disposal methods of stockpiling and landfilling have caused serious soil and ecological hazards. Separation recovery and the high-value utilization of residual carbon (RC) in FS are the keys to realizing the win-win situation of the coal chemical industry in terms of economic and environmental benefits
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Progress in the research on organic piezoelectric catalysts for dye decomposition Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-02-17 Zhaoning Yang, Xiaoxin Shu, Di Guo, Jing Wang, Hui Bian, Yanmin Jia
Organic contaminants have posed a direct and substantial risk to human wellness and the environment. In recent years, piezoelectric catalysis has evolved as a novel and effective method for decomposing these contaminants. Although piezoelectric materials offer a wide range of options, most related studies thus far have focused on inorganic materials and have paid little attention to organic materials
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Effects of iron oxide on crystallization behavior and spatial distribution of spinel in stainless steel slag Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-02-17 Zihang Yan, Qing Zhao, Chengzhi Han, Xiaohui Mei, Chengjun Liu, Maofa Jiang
Chromium plays a vital role in stainless steel due to its ability to improve the corrosion resistance of the latter. However, the release of chromium from stainless steel slag (SSS) during SSS stockpiling causes detrimental environmental issues. To prevent chromium pollution, the effects of iron oxide on crystallization behavior and spatial distribution of spinel were investigated in this work. The
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Cross-upgrading of biomass hydrothermal carbonization and pyrolysis for high quality blast furnace injection fuel production: Physicochemical characteristics and gasification kinetics analysis Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-02-17 Han Dang, Runsheng Xu, Jianliang Zhang, Mingyong Wang, Jinhua Li
The paper proposes a biomass cross-upgrading process that combines hydrothermal carbonization and pyrolysis to produce high-quality blast furnace injection fuel. The results showed that after upgrading, the volatile content of biochar ranged from 16.19% to 45.35%, and the alkali metal content, ash content, and specific surface area were significantly reduced. The optimal route for biochar production
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Effect of solidification cooling rate on microstructure and tribology characteristics of Zn-4Si alloy Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-02-17 F. Akbari, M. Golkaram, S. Beyrami, G. Shirazi, K. Mantashloo, R. Taghiabadi, M. Saghafi Yazdi, I. Ansarian
The main objective of this work was to modify the microstructure and enhance the tribological properties of a new Zn-4Si alloy through a high solidification cooling rate (SCR). According to the results, by increasing the SCR from 2.0 to 59.5°C/s the average size of primary Si particles and that of the grains reduced from 76.1 and 3780 µm to less than about 14.6 and 460 µm, respectively. Augmenting
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Effect of titanium on the sticking of pellets based on hydrogen metallurgy shaft furnace: Behavior analysis and mechanism evolution Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-02-17 Jinge Feng, Jue Tang, Zichuan Zhao, Mansheng Chu, Aijun Zheng, Xiaobing Li, Xiao’ai Wang
Direct reduction based on hydrogen metallurgical gas-based shaft furnace is a promising technology for the efficient and low-carbon smelting of vanadium–titanium magnetite. However, in this process, the sticking of pellets occurs due to the aggregation of metallic iron between the contact surfaces of adjacent pellets and has a serious negative effect on the continuous operation. This paper presents
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Ferric ion-triggered surface oxidation of galena for efficient chalcopyrite-galena separation Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-02-17 Qiancheng Zhang, Limin Zhang, Feng Jiang, Honghu Tang, Li Wang, Wei Sun
The efficient separation of chalcopyrite (CuFeS2) and galena (PbS) is essential for optimal resource utilization. However, finding a selective depressant that is environmentally friendly and cost effective remains a challenge. Through various techniques, such as microflotation tests, Fourier transform infrared spectroscopy, scanning electron microscopy (SEM) observation, X-ray photoelectron spectroscopy
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Effect of Ni content on the wear behavior of Al-Si-Cu-Mg-Ni/SiC particles composites Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-02-17 Yanyu Liu, Lina Jia, Wenbo Wang, Zuheng Jin, Hu Zhang
In recent years, the addition of Ni has been widely acknowledged to be capable of enhancing the mechanical properties of Al-Si alloys. However, the effect of Ni on the wear behaviors of Al-Si alloys and Al matrix composites, particularly at elevated temperatures, remains an understudied area. In this study, Al-Si-Cu-Mg-Ni/20wt% SiC particles (SiCp) composites with varying Ni contents were prepared
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Recent progresses in the development of tubular segmented-in-series solid oxide fuel cells: Experimental and numerical study Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-02-07 Shuo Han, Tao Wei, Sijia Wang, Yanlong Zhu, Xingtong Guo, Liang He, Xiongzhuang Li, Qing Huang, Daifen Chen
Solid oxide fuel cells (SOFCs) have attracted a great deal of interest because they have the highest efficiency without using any noble metal as catalysts among all the fuel cell technologies. However, traditional SOFCs suffer from having a higher volume, current leakage, complex connections, and difficulty in gas sealing. To solve these problems, Rolls-Royce has fabricated a simple design by stacking
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Numerical investigation of sinusoidal pulsating gas intake to intensify the gas-slag momentum transfer in the top-blown smelting furnace Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-02-01
Abstract The variation characteristics of bubble morphology and the thermal-physical properties of bubble boundary in the top-blown smelting furnace were explored by means of the computational fluid dynamics method. The essential aspects of the fluid phase (e.g., splashing volume, dead zone of copper slag, and gas penetration depth) were explored together with the effect of sinusoidal pulsating gas
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Lattice Boltzmann simulation study of anode degradation in solid oxide fuel cells during the initial aging process Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-02-01
Abstract For present solid oxide fuel cells (SOFCs), rapid performance degradation is observed in the initial aging process, and the discussion of the degradation mechanism necessitates quantitative analysis. Herein, focused ion beam-scanning electron microscopy was employed to characterize and reconstruct the ceramic microstructures of SOFC anodes. The lattice Boltzmann method (LBM) simulation of
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Effect of Ti and Ta content on the oxidation resistance of Co-Ni-based superalloys Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-02-01
Abstract Co-Ni-based superalloys are known for their capability to function at elevated temperatures and superior hot corrosion and thermal fatigue resistance. Therefore, these alloys show potential as crucial high-temperature structural materials for aeroengine and gas turbine hot-end components. Our previous work elucidated the influence of Ti and Ta on the high-temperature mechanical properties
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Recent progress on Sn3O4 nanomaterials for photocatalytic applications Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-02-01
Abstract Tin(IV) oxide (Sn3O4) is layered tin and exhibits mixed valence states. It has emerged as a highly promising visible-light pho-tocatalyst, attracting considerable attention. This comprehensive review is aimed at providing a detailed overview of the latest advancements in research, applications, advantages, and challenges associated with Sn3O4 photocatalytic nanomaterials. The fundamental concepts
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Dual-ion carrier storage through Mg2+ addition for high-energy and long-life zinc-ion hybrid capacitor Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-01-26 Junjie Zhang, Xiang Wu
Cation additives can efficiently enhance the total electrochemical capabilities of zinc-ion hybrid capacitors (ZHCs). However, their energy storage mechanisms in zinc-based systems are still under debate. Herein, we modulate the electrolyte and achieve dual-ion storage by adding magnesium ions. And we assemble several Zn//activated carbon devices with different electrolyte concentrations and investigate
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Metal-to-insulator transitions in 3d-band correlated oxides containing Fe compositions Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-01-26 Yiping Yu, Yuchen Cui, Jiangang He, Wei Mao, Jikun Chen
Metal-to-insulator transitions (MITs), which are achieved in 3d-band correlated transitional metal oxides, trigger abrupt variations in electrical, optical, and/or magnetic properties beyond those of conventional semiconductors. Among such material families, iron (Fe: 3d64s2)-containing oxides pique interest owing to their widely tunable MIT properties, which are associated with the various valence
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Precise regulation of the phase transformation for pyrolusite during the reduction roasting process Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-01-26 Ruofeng Wang, Peng Gao, Shuai Yuan, Yanjun Li, Yingzhi Liu, Cheng Huang
The mechanism involved in the phase transformation process of pyrolusite (MnO2) during roasting in a reducing atmosphere was systematically elucidated in this study, with the aim of effectively using low-grade complex manganese ore resources. According to single-factor experiment results, the roasted product with a divalent manganese (Mn2+) distribution rate of 95.30% was obtained at a roasting time
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Hybrid model for BOF oxygen blowing time prediction based on oxygen balance mechanism and deep neural network Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-01-26 Xin Shao, Qing Liu, Zicheng Xin, Jiangshan Zhang, Tao Zhou, Shaoshuai Li
The amount of oxygen blown into the converter is one of the key parameters for the control of the converter blowing process, which directly affects the tap-to-tap time of converter. In this study, a hybrid model based on oxygen balance mechanism (OBM) and deep neural network (DNN) was established for predicting oxygen blowing time in converter. A three-step method was utilized in the hybrid model.
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Preparation of sodium molybdate from molybdenum concentrate by microwave roasting and alkali leaching Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-01-26 Fengjuan Zhang, Chenhui Liu, Srinivasakannan Chandrasekar, Yingwei Li, Fuchang Xu
The preparation process of sodium molybdate has the disadvantages of high energy consumption, low thermal efficiency, and high raw material requirement of molybdenum trioxide, in order to realize the green and efficient development of molybdenum concentrate resources, this paper proposes a new process for efficient recovery of molybdenum from molybdenum concentrate and preparation of sodium molybdate
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Prediction of the thermal conductivity of Mg-Al-La alloys by CALPHAD method Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-01-26 Hongxia Li, Wenjun Xu, Yufei Zhang, Shenglan Yang, Lijun Zhang, Bin Liu, Qun Luo, Qian Li
Mg−Al alloys have excellent strength and ductility but relatively low thermal conductivity due to Al addition. The accurate prediction of thermal conductivity is a prerequisite for designing Mg−Al alloys with high thermal conductivity. Thus, databases for predicting temperature- and composition-dependent thermal conductivities must be established. In this study, Mg−Al−La alloys with different contents
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Alkyl dimethyl betaine activates the low-temperature collection capacity of sodium oleate for scheelite Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-01-26 Xu Wang, Zhengquan Zhang, Yanfang Cui, Wei Li, Congren Yang, Hao Song, Wenqing Qin, Fen Jiao
The impact of alkyl dimethyl betaine (ADB) on the collection capacity of sodium oleate (NaOl) at low temperatures was evaluated using flotation tests at various scales. The low-temperature synergistic mechanism of ADB and NaOl was explored by infrared spectroscopy, X-ray photoelectron spectroscopy, surface tension measurement, foam performance test, and flotation reagent size measurement. The flotation
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High corrosion and wear resistant electroless Ni-P gradient coatings on aviation aluminum alloy parts Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-01-26 Bo Wang, Jiawei Li, Zhihui Xie, Gengjie Wang, Gang Yu
A Ni-P alloy gradient coating consisting of multiple electroless Ni-P layers with various phosphorus contents was prepared on the aviation aluminum alloy. Several characterization and electrochemical techniques were used to characterize the different Ni-P coatings’ morphologies, phase structures, elemental compositions, and corrosion protection. The gradient coating showed good adhesion and high corrosion
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Paraffin–CaCl2·6H2O dosage effects on the strength and heat transfer characteristics of cemented tailings backfill Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-01-26 Hai Li, Aibing Jin, Shuaijun Chen, Yiqing Zhao, You Ju
The challenge of high temperatures in deep mining remains harmful to the health of workers and their production efficiency. The addition of phase change materials (PCMs) to filling slurry and the use of the cold storage function of these materials to reduce downhole temperatures is an effective approach to alleviate the aforementioned problem. Paraffin–CaCl2·6H2O composite PCM was prepared in the laboratory
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Spark plasma sintering of tungsten-based WTaVCr refractory high entropy alloys for nuclear fusion applications Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-01-26 Yongchul Yoo, Xiang Zhang, Fei Wang, Xin Chen, Xing-Zhong Li, Michael Nastasi, Bai Cui
W-based WTaVCr refractory high entropy alloys (RHEA) may be novel and promising candidate materials for plasma facing components in the first wall and diverter in fusion reactors. This alloy has been developed by a powder metallurgy process combining mechanical alloying and spark plasma sintering (SPS). The SPSed samples contained two phases, in which the matrix is RHEA with a body-centered cubic structure
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Competitive oxidation behavior of Ni-based superalloy GH4738 at extreme temperature Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-01-26 Hui Xu, Shufeng Yang, Enhui Wang, Yunsong Liu, Chunyu Guo, Xinmei Hou, Yanling Zhang
A high thrust-to-weight ratio poses challenges to the high-temperature performance of Ni-based superalloys. The oxidation behavior of GH4738 at extreme temperatures has been investigated by isothermal and non-isothermal experiments. As a result of the competitive diffusion of alloying elements, the oxide scale included an outermost porous oxide layer (OOL), an inner relatively dense oxide layer (IOL)
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Development and prospects of molten steel deoxidation in steelmaking process Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-01-26 Zhongliang Wang, Yanping Bao
In the long traditional process of steelmaking, excess oxygen is blown into the converter, and alloying elements are used for deoxidation. This inevitably results in excessive deoxidation of products remaining within the steel liquid, affecting the cleanliness of the steel. With the increasing requirements for steel performance, reducing the oxygen content in the steel liquid and ensuring its high
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N-doped graphene quantum dot-decorated N-TiO2/P-doped porous hollow g-C3N4 nanotube composite photocatalysts for antibiotic photodegradation and H2 production Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-01-26 Jingshu Yuan, Yao Zhang, Xiaoyan Zhang, Junjie Zhang, Shen’gen Zhang
Exclusive responsiveness to ultraviolet light (∼3.2 eV) and high photogenerated charge recombination rate are the two primary drawbacks of pure TiO2. We combined N-doped graphene quantum dots (N-GQDs), morphology regulation, and heterojunction construction strategies to synthesize N-GQD/N-doped TiO2/P-doped porous hollow g-C3N4 nanotube (PCN) composite photocatalysts (denoted as G-TPCN). The optimal
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MOF-derived porous graphitic carbon with optimized plateau capacity and rate capability for high performance lithium-ion capacitors Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-01-25
Abstract The development of anode materials with high rate capability and long charge–discharge plateau is the key to improve performance of lithium-ion capacitors (LICs). Herein, the porous graphitic carbon (PGC-1300) derived from a new triply interpenetrated cobalt metal-organic framework (Co-MOF) was prepared through the facile and robust carbonization at 1300°C and washing by HCl solution. The
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Microstructure and thermal properties of dissimilar M300–CuCr1Zr alloys by multi-material laser-based powder bed fusion Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-01-11
Abstract Multi-material laser-based powder bed fusion (PBF-LB) allows manufacturing of parts with 3-dimensional gradient and additional functionality in a single step. This research focuses on the combination of thermally-conductive CuCr1Zr with hard M300 tool steel. Two interface configurations of M300 on CuCr1Zr and CuCr1Zr on M300 were investigated. Ultra-fine grains form at the interface due to
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Effect of Zn content on microstructure, mechanical properties and thermal conductivity of extruded Mg-Zn-Ca-Mn alloys Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-01-04 Bei Tang, Jinlong Fu, Jingkai Feng, Xiting Zhong, Yangyang Guo, Haili Wang
Mg-Zn-Ca-Mn series alloys are developed as promising candidates of 5G communication devices with excellent thermal conductivities, great ductility, and acceptable strength. In present paper, Mg-xZn-0.4Ca-0.2Mn (x = 2wt%, 4wt%, 6wt%) alloys were prepared by a near-solidus extrusion and the effect of Zn content on mechanical and thermal properties were investigated. The results showed that the addition
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Improving the electrocatalytic activity of Fe, N co-doped biochar for polysulfide by regulation of N-C and Fe-N-C electronic configurations Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-01-04 Jingchun Sun, Jindiao Guan, Suqing Zhou, Jiewei Ouyang, Nan Zhou, Chunxia Ding, Mei’e Zhong
The conversion of agricultural residual biomass into biochar as a sulfur host material for Li-S batteries is a promising approach to alleviate the greenhouse effect and realize waste resource reutilization. However, the large-scale application of pristine biochar is hindered by its low electrical conductivity and limited electrocatalytic sites. This paper addressed these challenges via the construction
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Clean production of Fe-based amorphous soft magnetic alloys via smelting reduction of high-phosphorus iron ore and apatite Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-01-04 Hua Zhang, Tuoxiao Wang, Guoyang Zhang, Wenjie Wu, Long Zhao, Tao Liu, Shuai Mo, Hongwei Ni
Separated preparation of prealloys and amorphous alloys results in severe solidification–remelting and beneficial element removal–readdition contradictions, which markedly increase energy consumption and emissions. This study offered a novel strategy for the direct production of FePC amorphous soft magnetic alloys via smelting reduction of high-phosphorus iron ore (HPIO) and apatite. First, the thermodynamic
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Residual stress measurement and analysis of siliceous slate-containing quartz veins Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-01-04 Tao Wang, Weiwei Ye, Yemeng Tong, Naisheng Jiang, Liyuan Liu
Engineering geological disasters such as rockburst have always been a critical factor affecting the safety of coal mine production. Thus, residual stress is considered a feasible method to explain these geomechanical phenomena. In this study, electron backscatter diffraction (EBSD) and optical microscopy were used to characterize the rock microcosm. A measuring area that met the requirements of X-ray
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Hot deformation behavior of novel high-strength Mg-0.6Mn-0.5Al-0.5Zn-0.4Ca alloy Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-01-04 Hao Chen, Yanmei Yang, Conglin Hu, Gang Zhou, Hui Shi, Genzhi Jiang, Yuanding Huang, Norbert Hort, Weidong Xie, Guobing Wei
The hot compression behavior of as-extruded Mg-0.6Mn-0.5Al-0.5Zn-0.4Ca alloy was studied on a Gleeble-3500 thermal simulation machine. Experiments were conducted at temperatures ranging from 523 to 673 K and strain rates ranging from 0.001 to 1 s−1. Results showed that an increase in the strain rate or a decrease in deformation temperature led to an increase in true stress. The constitutive equation
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Effect of variations in the polar and azimuthal angles of coarse particles on the structure of drainage channels in thickened beds Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-01-04 Cuiping Li, Gezhong Chen, Zhu’en Ruan, Raimund Bürger, Yuan Gao, Hezi Hou, Hui Wang
The 3D reconstruction and quantitative characterization of drainage channels and coarse tailings particles in a bed were conducted in this study. The influence of variations in the azimuthal angle (θ) and polar angle (φ) of coarse particles on drainage channel structure was analyzed, and the drainage mechanism of the bed was studied. Results showed that water discharge in the bed reduced the size of
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Highly dispersed NiMo@rGO nanocomposite catalysts fabricated by a two-step hydrothermal method for hydrogen evolution Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-01-04 Duanhao Cao, Xiaofeng Ma, Yipeng Zhang, La Ta, Yakun Yang, Chao Xu, Feng Ye, Jianguo Liu
Exploring and designing a high-performance non-noble metal catalyst for hydrogen evolution reaction (HER) are crucial for the large-scale application of H2 by water electrolysis. Here, novel catalysts with NiMo nanoparticles decorated on reduced graphene oxide (NiMo@rGO) synthesized by a two-step hydrothermal method were reported. Physical characterization results showed that the prepared NiMo@rGO-1
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Formation and control of the surface defect in hypo-peritectic steel during continuous casting: A review Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-01-04 Quanhui Li, Peng Lan, Haijie Wang, Hongzhou Ai, Deli Chen, Haida Wang
Hypo-peritectic steels are widely used in various industrial fields because of their high strength, high toughness, high processability, high weldability, and low material cost. However, surface defects are liable to occur during continuous casting, which includes depression, longitudinal cracks, deep oscillation marks, and severe level fluctuation with slag entrapment. The high-efficiency production
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Insights into the oxidation resistance mechanism and tribological behaviors of multilayered TiSiN/CrVxN hard coatings Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-01-04 Hongbo Ju, Moussa Athmani, Jing Luan, Abbas AL-Rjoub, Albano Cavaleiro, Talha Bin Yaqub, Abdelouahad Chala, Fabio Ferreira, Filipe Fernandes
In the last decades, vanadium alloyed coatings have been introduced as potential candidates for self-lubrication due to their perfect tribological properties. In this work, the influence of V incorporation on the wear performance and oxidation resistance of TiSiN/CrN film coatings deposited by direct current (DC) reactive magnetron sputtering is investigated. The results show that vanadium incorporation
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Structural survey of metal-covalent organic frameworks and covalent metal-organic frameworks Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-01-04 Chaozhi Xiong, Zhenwu Shao, Jia’nan Hong, Kexin Bi, Qingsong Huang, Chong Liu
This review offers an overview of the latest developments in metal-covalent organic framework (MCOF) and covalent metal-organic framework (CMOF) materials, whose construction entails a combination of reversible coordination and covalent bonding adapted from metal-organic frameworks (MOFs) and covalent organic frameworks (COFs), respectively. With an emphasis on the MCOF and CMOF structures, this review
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Processing map and dynamic recrystallization behaviours of 316LN-Mn austenitic stainless steel Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-01-04 Shaolong Sheng, Yanxin Qiao, Ruzong Zhai, Mingyue Sun, Bin Xu
The hot deformation behaviours of 316LN-Mn austenitic stainless steel were investigated by uniaxial isothermal compression tests at different temperatures and strain rates. The microstructural evolutions were also studied using electron backscatter diffraction. The flow stress decreases with the increasing temperature and decreasing strain rate. A constitutive equation was established to characterize
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Kinetics of solid-state reduction of chromite overburden Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-01-04 Saida Shaik, Zhiyuan Chen, Preeti Prakash Sahoo, Chenna Rao Borra
The demand for alternative low-grade iron ores is on the rise due to the rapid depletion of high-grade natural iron ore resources and the increased need for steel usage in daily life. However, the use of low-grade iron ores is a constant clinical task for industry metallurgists. Direct smelting of low-grade ores consumes a substantial amount of energy due to the large volume of slag generated. This
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Recent advances and perspectives of zinc metal-free anodes for zinc ion batteries Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-01-01
Abstract Zinc-ion batteries (ZIBs) are recognized as potential energy storage devices due to their advantages of low cost, high energy density, and environmental friendliness. However, zinc anodes are subject to unavoidable zinc dendrites, passivation, corrosion, and hydrogen evolution reactions during the charging and discharging of batteries, becoming obstacles to the practical application of ZIBs
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Enhanced properties of stone coal-based composite phase change materials for thermal energy storage Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-01-01
Abstract Phase change materials (PCMs) can be incorporated with low-cost minerals to synthesize composites for thermal energy storage in building applications. Stone coal (SC) after vanadium extraction treatment shows potential for secondary utilization in composite preparation. We prepared SC-based composite PCMs with SC as a matrix, stearic acid (SA) as a PCM, and expanded graphite (EG) as an additive
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Solid-state impedance spectroscopy studies of dielectric properties and relaxation processes in Na2O-V2O5-Nb2O5-P2O5 glass system Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-01-01
Abstract Solid-state impedance spectroscopy (SS-IS) was used to investigate the influence of structural modifications resulting from the addition of Nb2O5 on the dielectric properties and relaxation processes in the quaternary mixed glass former (MGF) system 35Na2O-10V2O5-(55−x)P2O5−xNb2O5 (x = 0–40, mol%). The dielectric parameters, including the dielectric strength and dielectric loss, are determined
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Advances in depressants for flotation separation of Cu-Fe sulfide minerals at low alkalinity: A critical review Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-01-01
Abstract The flotation separation of Cu-Fe sulfide minerals at low alkalinity can be achieved using selective depressants. In the flotation system of Cu-Fe sulfide minerals, depressants usually preferentially interact with the pyrite surface to render the mineral surface hydrophilic and hinder the adsorption of the collector. This review summarizes the advances in depressants for the flotation separation
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Preparation of CIP@TiO2 composite with broadband electromagnetic wave absorption properties Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2024-01-01
Abstract Scholars aim for the improved impedance matching (Z) of materials while maintaining their excellent wave absorption properties. Based on the hydrolysis characteristics of isopropyl titanate, a simple preparation process for the coating of carbonyl iron powder (CIP) with TiO2 was designed. Given the TiO2 coating, the Z of the CIP@TiO2 composite was adjusted well by decreasing the dielectric
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Potassium thiocyanate additive for PEDOT:PSS layer to fabricate efficient tin-based perovskite solar cells Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2023-12-11 Xu Zhao, Shoudeng Zhong, Shuqi Wang, Shaozhen Li, Sujuan Wu
The commercialized poly(3,4-ethylenedioxythiophene):poly (styrenesulfonate) (PEDOT:PSS) is usually used as hole transport layers (HTLs) in tin-based perovskite solar cells (TPSCs). However, the further development has been restricted due to the acidity that could damage the stability of TPSCs. Although the PEDOT:PSS solution can be diluted by water to decrease acidity and reduce the cost of device
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High throughput screening of localised and general corrosion in type 2205 duplex stainless steel at ambient temperature Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2023-12-01
Abstract Bipolar electrochemistry is used to produce a linear potential gradient across a bipolar electrode (BPE), providing direct access to the anodic and cathodic reactions under a wide range of applied potentials. The occurrence of pitting corrosion, crevice corrosion, and general corrosion on type 2205 duplex stainless steel (DSS 2205) BPE has been observed at room temperature. The critical pit
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Metal-organic decomposition growth of thin film metastable perovskite nickelates with kinetically improved quantum transitions Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2023-12-01
Abstract The multiple quantum transitions within d-band correlation oxides such as rare-earth nickelates (RENiO3) triggered by critical temperatures and/or hydrogenation opened up a new paradigm for correlated electronics applications, e.g. ocean electric field sensor, bio-sensor, and neuron synapse logical devices. Nevertheless, these applications are obstructed by the present ineffectiveness in the
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Effect mechanism of aluminum occurrence and content on the induration characteristics of iron ore pellets Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2023-12-01
Abstract With the intensified depletion of high-grade iron ores, the increased aluminum content in iron ore concentrates has become unavoidable, which is detrimental to the pelletization process. Therefore, the effect mechanism of aluminum on pellet quality must be identified. In this study, the influence of aluminum occurrence and content on the induration of hematite (H) and magnetite (M) pellets
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An integrated and efficient process for borax preparation and magnetite recovery from soda-ash roasted ludwigite ore under CO–CO2–N2 atmosphere Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2023-11-15 Jinxiang You, Jing Wang, Mingjun Rao, Xin Zhang, Jun Luo, Zhiwei Peng, Guanghui Li
To realize the comprehensive utilization of ludwigite ore, an integrated and efficient route for the boron and iron separation was proposed in this work, which via soda-ash roasting under CO–CO2–N2 atmosphere followed by grind-leaching, magnetic separation, and CO2 carbonation. The effects of roasting temperature, roasting time, CO/(CO+CO2) composition, and Na2CO3 dosage on the boron and iron separation
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Effect of ammonium sulfate on the formation of zinc sulfide species on hemimorphite surface and its role in sulfidation flotation Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2023-11-15 Xi Zhang, Yu Wang, Jiushuai Deng, Zhongyi Bai, Hongxiang Xu, Qingfeng Meng, Da Jin, Zhenwu Sun
Effectively strengthening the surface sulfidation is essential for recovering hemimorphite by froth flotation. In this work, inductively coupled plasma optical emission spectrometer (ICP-OES) measurements, Visual MINTEQ calculation, X-ray photoelectron spectroscopy (XPS) analysis, time of flight secondary ion mass spectrometry (ToF-SIMS) analysis, and micro-flotation experiments were explored to systematically
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Intelligent method to experimentally identify the fracture mechanism of red sandstone Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2023-11-15 Zida Liu, Diyuan Li, Quanqi Zhu, Chenxi Zhang, Jinyin Ma, Junjie Zhao
Tensile and shear fractures are significant mechanisms for rock failure. Understanding the fractures that occur in rock can reveal rock failure mechanisms. Scanning electron microscopy (SEM) has been widely used to analyze tensile and shear fractures of rock on a mesoscopic scale. To quantify tensile and shear fractures, this study proposed an innovative method composed of SEM images and deep learning
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Functionalized carbon dots for corrosion protection: Recent advances and future perspectives Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2023-11-15 Li Zhao, Jinke Wang, Kai Chen, Jingzhi Yang, Xin Guo, Hongchang Qian, Lingwei Ma, Dawei Zhang
Metal corrosion causes significant economic losses, safety issues, and environmental pollution. Hence, its prevention is of immense research interest. Carbon dots (CDs) are a new class of zero-dimensional carbon nanomaterials, which have been considered for corrosion protection applications in recent years due to their corrosion inhibition effect, fluorescence, low toxicity, facile chemical modification
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State of the art in applications of machine learning in steelmaking process modeling Int. J. Miner. Metall. Mater. (IF 4.8) Pub Date : 2023-11-15 Runhao Zhang, Jian Yang
With the development of automation and informatization in the steelmaking industry, the human brain gradually fails to cope with an increasing amount of data generated during the steelmaking process. Machine learning technology provides a new method other than production experience and metallurgical principles in dealing with large amounts of data. The application of machine learning in the steelmaking