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Nanostructured PtZn intermetallic compound: Controlled formation from PtZn(CH3COO)4 molecular precursor and tests of catalytic properties Intermetallics (IF 3.398) Pub Date : 2021-03-04 Nadezhda S. Smirnova; Evgeny V. Khramov; Igor P. Stolarov; Ilya A. Yakushev; Galina N. Baeva; Galina O. Bragina; Ekaterina V. Belova; Arcady V. Ishchenko; Anna S. Popova; Yan V. Zubavichus; Michael N. Vargaftik; Aleksander Y. Stakheev
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The effect of radio-waves irradiation on copper-ore leaching Hydrometallurgy (IF 3.338) Pub Date : 2021-02-22 Zohre Moravvej; Ali Mohebbi; Ali Behrad Vakylabad; Sona Raeissi
In this study, focused radio wave (RW) assisted leaching was investigated for the first time to considerably enhance the efficiency of copper leaching from its low-grade ores. For this purpose, the effect of exposure to radio wave electromagnetic irradiation was experimentally investigated. Two series of leaching tests were conducted, in the form of agitated slurry and fixed-bed column modes. The experimental
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Microstructure evolution of chalcopyrite agglomerates during leaching – A synchrotron-based X-ray CT approach combined with a data-constrained modelling (DCM) Hydrometallurgy (IF 3.338) Pub Date : 2021-03-04 Xiyu Gao; Yi Yang; Sam Yang; Yalong Ma; Miao Chen
Agglomeration provides substantial advantages on heap leaching, such as creating a porous heap to improve low-permeability ore leaching efficiency, as well as building an environmentally friendly heap by reducing metal releases from waste rock and tailings. In this study, we employed synchrotron X-ray computed tomography (X-ray CT) combined with a data-constrained modelling (DCM) approach to investigate
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Effect of conjugated small molecular electrolytes based on carbazole with N and F atoms for the automatic formation of electron transport layer in polymer solar cell Synth. Met. (IF 3.286) Pub Date : 2021-03-04 Juae Kim; Yong Ryun Kim; Minji Kim; Chang Jae Yoon; Junying Piao; Jong Sung Jin; Ji Yeong Sung; Heejoo Kim; Kwanghee Lee; Hongsuk Suh
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A clean and efficient approach for recovery of vanadium and tungsten from spent SCR catalyst Miner. Eng. (IF 3.795) Pub Date : 2021-03-03 Yijun Cao; Junfan Yuan; Hao Du; David Dreisinger; Meng Li
The widespread use of selective catalytic reduction (SCR) catalysts will provide many waste SCR catalysts. These spent catalysts can be identified as hazardous solid waste because they contain a lot of heavy metals. This work aims to develop a clean, green, and economical way to recover valuable metals and regenerate the catalyst. The effect parameters of hydrogen peroxide and ammonium carbonate concentration
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A method to identify wet ball mill’s load based on CEEMDAN, RCMDE and SRNN classification Miner. Eng. (IF 3.795) Pub Date : 2021-03-03 Lirong Yang; Jiacheng Cai
Ball mill plays a key role in mineral processing plant, and its load identification for optimal control has great significance for the energy consumption reduction and production efficiency improvement. The vibration signal of ball mill shell contains abundant load information, which can be used to identify ball mill load. However, due to the non-linear and non-stationary characteristics of vibration
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Promoting polysulfide redox kinetics by Co9S8 nanoparticle-embedded in N-doped carbon nanotube hollow polyhedron for lithium sulfur batteries J. Alloys Compd. (IF 4.65) Pub Date : 2021-02-23 Yi Yu; Zuhang Zhan; Peijuan Tang; Qingyu Xu; Qi Fan; Wei Wang; Kai Shen
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Calculation and construction of deformation mechanism maps and processing maps for CoCrFeMnNi and Al0.5CoCrFeMnNi high-entropy alloys J. Alloys Compd. (IF 4.65) Pub Date : 2021-02-19 H.T. Jeong; W.J. Kim
Though extensive studies have been performed on high entropy alloys, there is still a lack of understanding of their high-temperature deformation mechanisms. By systematically analyzing the high-temperature behavior of fine-grained and coarse-grained CoCrFeMnNi and Al0.5CoCrFeMnNi high-entropy alloys (HEAs) studied in this work and reported in the literature, their constitutive deformation equations
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Temperature dependence of deformation behavior, microstructure evolution and fracture mechanism of Inconel 625 superalloy J. Alloys Compd. (IF 4.65) Pub Date : 2021-02-27 Xudong Liu; Jiangkun Fan; Peizhe Zhang; Jin Xie; Fulong Chen; Degui Liu; Ruihao Yuan; Bin Tang; Hongchao Kou; Jinshan Li
The temperature effect on deformation behavior, microstructural evolution and fracture mechanism of Inconel 625 superalloy sheet were systematically investigated in a wide temperature range from room temperature (RT) to 950 °C. Tensile temperature was varied in increments of 50 °C after reaching 500 °C. Obvious serrations occurred at the medium temperature range and evolved in the sequence of B→B+C→C
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Preparation and Characterization of Cu2ZnSnS4 Thin Films with Various Compositions Deposited by a Dual Thermal Evaporation Technique J. Alloys Compd. (IF 4.65) Pub Date : 2021-03-04 Sarah Alamri; Muna Khushaim; Saleh Alamri
Cu2ZnSnS4 (CZTS) thin films were deposited successfully with four different compositions, namely, Cu-rich, Sn-rich, Zn-rich and near-stoichiometric CZTS, by a dual thermal evaporation technique to investigate the effect of stoichiometry on the physical properties of the deposited films. The thin films were characterized by energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction, Raman spectroscopy
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Facile preparation of carbon quantum dots/TiO2 composites at room temperature with improved visible-light photocatalytic activity J. Alloys Compd. (IF 4.65) Pub Date : 2021-03-04 Jingjie Zhang; Quanrun Liu; Junhao Wang; He He; Feng Shi; Baolin Xing; Jianbo Jia; Guangxu Huang; Chuanxiang Zhang
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Harnessing Oxygen Vacancy in V2O5 as High Performing Aqueous Zinc-Ion Battery Cathode J. Alloys Compd. (IF 4.65) Pub Date : 2021-03-04 Zichen Qi; Ting Xiong; Tao Chen; Wen Shi; Mingchang Zhang; Zhi Wei Javier Ang; Huiqing Fan; Hong Xiao; Wee Siang Vincent Lee; Junmin Xue
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Flexible Al-Ti-Zn-O MIM Capacitors Fabricated by Room Temperature Atomic Layer Deposition and Their Electrical Performances J. Alloys Compd. (IF 4.65) Pub Date : 2021-03-04 Jin Lei; Chang Fang; Chang Liu; Di Wu; Ai-Dong Li
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Highly efficient and stable Li extraction device by coupling Li4Ti5O12 electrode and matching perfluoro electrolyte J. Alloys Compd. (IF 4.65) Pub Date : 2021-03-04 Xin Wu; Jie Zhong; Houji Liu; Yuxi Ren; Haiquan Zhang; Zijing Liu; Ning Wang
Based on the large extraction efficiency of 10 – 200 μg cm-2 h-1, the electrolysis-based technology is one of the most promising methods for large-scale extraction of lithium resources from natural seawater. The high potential safety hazard is the inherent defect of the conventional two-electrode electrolytic cell because of the threshold voltage of 3.9 V, which is very close to the decomposition voltage
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Atomic Insights into Surface Orientations and Oxygen Vacancies in the LiMn2O4 Cathode for Lithium Storage J. Alloys Compd. (IF 4.65) Pub Date : 2021-03-04 Wangqiong Xu; Yonghui Zheng; Lina Lin; Weibin Lei; Zhenguo Wang; Haili Song; Yan Cheng; Ruijuan Qi; Hui Peng; Hechun Lin; Zhenzhong Yang; Rong Huang
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Rare-earth elements doped Nd2CuO4 as Cu-based cathode for intermediate-temperature solid oxide fuel cells J. Alloys Compd. (IF 4.65) Pub Date : 2021-03-04 Liu Bo; Li Na; Sun Liping; Li Qiang; Huo Lihua; Zhao Hui
The design of cobalt-free cathode substance with unexceptionable electrochemical property and high thermochemical stability is an important target for IT-SOFC. In this work, the impact of some rare earth elements doping on the construction, TEC, DC conductivity and electrochemical properties of Nd1.9Ln0.1CuO4 (Ln=La, Nd, Sm and Ce) are investigated. Nd1.9Ln0.1CuO4 forms single tetragonal structure
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Boosting ultrafast Li storage kinetics of conductive Nb-doped TiO2 functional layer coated on LiMn2O4 J. Alloys Compd. (IF 4.65) Pub Date : 2021-03-04 Ki-Wook Sung; Dong-Yo Shin; Hyo-Jin Ahn
Interface engineering of LiMn2O4 (LMO) is a promising strategy to enhance the lithium storage capability and cycling stability of cathode materials in Li-ion batteries (LIBs). This is because the strategy prevents structural degradation; however, Li storage kinetics remains unsatisfactory, resulting in poor ultrafast cycling performance. Therefore, we fabricated an Nb-doped TiO2 (NTO) functional layer
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Enhanced charges separation to improve hydrogen production efficiency by organic piezoelectric film polarization J. Alloys Compd. (IF 4.65) Pub Date : 2021-03-04 Dafeng Zhang; Xuhui Liu; Shoucheng Wang; Bingjie Fan; Zhuwang Shao; Changhua Su; Xipeng Pu
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Effect of the ionic radius of stabilizing oxide cation on the local structure and transport properties of zirconia based solid solutions J. Alloys Compd. (IF 4.65) Pub Date : 2021-03-04 Sergey A. Artemov; Mikhail A. Borik; Alexey V. Kulebyakin; Irina E. Kuritsyna; Nataliya A. Larina; Elena E. Lomonova; Valentina A. Myzina; Polina A. Ryabochkina; Nataliya Yu. Tabachkova; Tatyana V. Volkova
Features of the local structure of ZrO2-Yb2O3, ZrO2-Y2O3-Yb2O3 and ZrO2-Sc2O3-Yb2O3 single crystals have been studied using optical spectroscopy. The probability of oxygen vacancies to occupy the first coordination shells of the Sc3+, Yb3+ and Y3+ stabilizing oxide cations has been shown to vary in the test solid solutions. Furthermore it has been shown that the probability of oxygen vacancies to occupy
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Black Single-Crystal TiO2 Nanosheet Array Films with Oxygen Vacancy on {001} Facets for Boosting Photocatalytic CO2 Reduction J. Alloys Compd. (IF 4.65) Pub Date : 2021-03-04 Wei Zhang; Jinbo Xue; Qianqian Shen; Shufang Jia; Jiaqi Gao; Xuguang Liu; Husheng Jia
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Subgrain microstructures and tensile properties of 316L stainless steel manufactured by selective laser melting J. Iron Steel Res. Int. (IF 1.213) Pub Date : 2021-03-04 Xin Yang; Wen-jun Ma; Yao-jia Ren; Shi-feng Liu; Yan Wang; Wan-lin Wang; Hui-ping Tang
316L stainless steel samples were manufactured by selective laser melting (SLM). The microstructure of SLM-made 316L stainless steel and the room temperature tensile properties both perpendicular and along the building direction were studied and characterized. The static temperature field during the molten pool formation was simulated by finite element simulation. It indicates that the nonlinear asymmetrical
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Differences in Etheramines Froth Properties and the Effects on Iron Ore Flotation. Part II: Three-Phase Systems Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2021-03-03 Vanderson Eney de Matos; Stephânia da Consolação Silva Nogueira; Gilberto Silva; Przemyslaw B. Kowalczuk; Antônio Eduardo Clark Peres
ABSTRACT Part I of this investigation, addressing two-phase systems, showed that etherdiamine produces more stable and dryer foams, whereas smaller bubbles are formed with faster kinetics by ethermonoamine. These remarkable differences in foam stability, attributed to the distinct chain length and consequent hydrophilic–lipophilic balance, influence froth properties, and may affect the selectivity
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Effect of ultrafine WC contents on the microstructures, mechanical properties and wear resistances of regenerated coarse grained WC-10Co cemented carbides Int. J. Refract. Met. Hard Mater. (IF 3.407) Pub Date : 2021-02-26 Zhenyun Lu; Jin Du; Yujing Sun; Guosheng Su; Chongyan Zhang; Xiangmin Kong
The effects of ultrafine WC content on the microstructure, mechanical properties and wear resistance of regenerated coarse grained WC-10Co cemented carbides have been investigated by SEM, mechanical property tests and wear test. The results show that with the increase of ultrafine WC content, the average grain size of the regenerated cemented carbides increases first and then decreases. When the ultrafine
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The enhancement of the microstructure and mechanical performances of ultrafine WC-Co cemented carbides by optimizing Cr2(C,N) addition and WC particle sizes Int. J. Refract. Met. Hard Mater. (IF 3.407) Pub Date : 2021-02-26 Ding Li; Ying Liu; Jinwen Ye; Xianfu Chen; Lu Wang
Ultrafine WC-10Co cemented carbides with different Cr2(C,N) inhibitor contents and different-scaled WC powders were prepared by low-pressure sintering. Their influence on the microstructure and mechanical performances were investigated and expounded in this work. The result shows that the Cr2(C,N) addition homogenized the microstructure of the cemented carbides and refined WC grains. With the Cr2(C
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Morphology transition of eutectic carbide assisted by thermoelectric magnetic force during the directional solidification of M2 high-speed steel Ironmak. Steelmak. (IF 1.352) Pub Date : 2021-03-04 Tianxiang Zheng; Wanqin Li; Wentao Qi; Zhibin Xia; Qiang Li; Zhe Shen; Yifeng Guo; Yunbo Zhong; Hui Wang; Qiuliang Wang
ABSTRACT The morphology of eutectic carbide was studied by application of a transverse static magnetic field (TSMF) during the directional solidification of M2 high-speed steel. The results show that the morphology of eutectic carbide changed from lamella to fibre as the magnetic flux density (MFD) increased from 0 to 1 T. The transformation from lamella to fibre has been enhanced by the increasing
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Optimal hot metal desulphurisation slag considering iron loss and sulphur removal capacity part II: evaluation Ironmak. Steelmak. (IF 1.352) Pub Date : 2021-03-04 Frank N. H. Schrama; Elisabeth M. Beunder; Sourav K. Panda; Hessel-Jan Visser; Elmira Moosavi-Khoonsari; Adam Hunt; Jilt Sietsma; Rob Boom; Yongxiang Yang
ABSTRACT The optimal hot metal desulphurisation (HMD) slag is defined as a slag with a sufficient sulphur removal capacity and a low apparent viscosity (ηslag) which leads to low iron losses. In part I of this study, the fundamentals behind the optimal slag were discussed. In this part these fundamentals are explored by a Monte Carlo simulation, based on FactSage calculations, plant data analysis and
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Loss mechanism of micro-carbon ferromanganese during RH refining Ironmak. Steelmak. (IF 1.352) Pub Date : 2021-03-04 Chaojie Zhang; Yanping Bao; Liqiang Zhang; Dechi Tang; Aonan Zhao
ABSTRACT It is of great significance to improve the yield of ferroalloy for steelmaking to reduce cost and save energy. In this paper a kind of loss mechanism of micro-carbon ferromanganese which has micro content of carbon during RH refining of interstitial free steel was investigated. The flow field of argon gas in the RH degassing vessel was investigated through numerical simulation. Through force
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Influence of top gas recycling technology on operation parameters and CO2 emission of COREX process Ironmak. Steelmak. (IF 1.352) Pub Date : 2021-03-03 Shun Yao; Bo Song; Shengli Wu; Mingyin Kou; Yifan Hu; Heng Zhou
ABSTRACT Top gas recycling technology is an effective means to reduce fuel consumption and CO2 emission in the ironmaking field. In this work, a static mathematical model of COREX process combined with top gas recycling technology is developed based on material and energy balance. The influence of three types of top gas recycling, such as the recycle gas without CO2 removal (RG-1), the recycle gas
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Modelling the effect of sinter machine speed on bed temperature and coke combustion characteristics in iron ore sintering process Ironmak. Steelmak. (IF 1.352) Pub Date : 2021-03-03 R. Seenivasan; A. V. B. Acharyulu; V. Sabariraj; Jaiswal Arvind; Sah Rameshwar; G. Balachandran
ABSTRACT In the present study, the influence of industrial sinter machine speed on the temperature distribution of the bed is evaluated using a one-dimensional transient mathematical model. The model is developed considering the law of conservation of mass, momentum, and energy of solid and gas phases. The prediction of bed temperature from the model is compared with the measured lab scale pot test
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Dynamic analysis of blockage behavior of fine particles in a packed bed by discrete element method Ironmak. Steelmak. (IF 1.352) Pub Date : 2021-03-03 Xuefeng She; Songhao Liu; Yanjun Liu; Wenshu Zhao; Yanjiang Wang; Heng Zhou
ABSTRACT The dynamic blockage behaviour of fine particles in a packed bed was simulated using the discrete element method (DEM). The influence of key variables are examined. The calculation results showed that fine particles blockage in packed bed are easy to occur in the area where fine particles just enter the bed. The mechanism of blockage formation is mainly due to mechanical interactions between
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Phase transformation of austempered and quench-tempered gray cast irons under laser surface hardening treatment Int. J. Cast Met. Res. (IF 0.987) Pub Date : 2021-03-04 Bingxu Wang; Yuming Pan; Gary Barber; Rui Wang
ABSTRACT In this research, the effects of laser surface hardening treatment on the phase transformation of austempered and quench-tempered grey cast irons were investigated. It was found that there were four zones in the matrix of austempered grey cast iron and three zones in the matrix of quench-tempered grey cast iron produced by the laser hardening process. Both cast irons had central laser-hardened
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Effect of the Fe2O3 Addition Amount on Dephosphorization of Hot Metal with Low Basicity Slag by High-Temperature Laboratorial Experiments Metals (IF 2.117) Pub Date : 2021-03-04 Wenkui Yang; Jian Yang; Yanqiu Shi; Zhijun Yang; Fubin Gao; Runhao Zhang; Han Sun
In this paper, the influence of the Fe2O3 addition amount on the dephosphorization of hot metal at 1623 K with the slag of the low basicity (CaO/SiO2) of about 1.5 was investigated by using high-temperature laboratorial experiments. With increasing the Fe2O3 addition amount from 5 to 30 g, the contents of [C], [Si], [Mn] and [P] in the hot metal at the end of dephosphorization are decreased and the
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The Influence of Particle Shape, Powder Flowability, and Powder Layer Density on Part Density in Laser Powder Bed Fusion Metals (IF 2.117) Pub Date : 2021-03-04 Lukas Haferkamp; Livia Haudenschild; Adriaan Spierings; Konrad Wegener; Kirstin Riener; Stefan Ziegelmeier; Gerhard J. Leichtfried
The particle shape influences the part properties in laser powder bed fusion, and powder flowability and powder layer density (PLD) are considered the link between the powder and part properties. Therefore, this study investigates the relationship between these properties and their influence on final part density for six 1.4404 (316L) powders and eight AlSi10Mg powders. The results show a correlation
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Experimental Analysis and Optimization of EDM Parameters on HcHcr Steel in Context with Different Electrodes and Dielectric Fluids Using Hybrid Taguchi-Based PCA-Utility and CRITIC-Utility Approaches Metals (IF 2.117) Pub Date : 2021-03-04 Manjunath Patel Gowdru Chandrashekarappa; Sandeep Kumar; Jagadish; Danil Yurievich Pimenov; Khaled Giasin
Industries demand stringent requirements towards economical machining without hindering the surface quality while cutting high carbon high chromium (HcHcr) steel. Electrical discharge machining (EDM) of HcHcr steel aims at reducing machining cost (i.e., maximize material removal rate (MRR) and minimize tool wear rate (TWR)) with good surface quality (i.e., minimize surface roughness (SR)). A comparative
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Liquid-Phase Deposition Synthesis of ZIF-67-Derived Synthesis of Co3O4@TiO2 Composite for Efficient Electrochemical Water Splitting Metals (IF 2.117) Pub Date : 2021-03-04 Zaffar Ahmed Shaikh; Asif Ali Laghari; Oleg Litvishko; Valery Litvishko; Tatyana Kalmykova; Artur Meynkhard
In this article, a novel Co3O4@TiO2 composite is synthesized by applying two-step methods. ZIF-67 is synthesized and used as a template for the synthesis of the composite. The composite is designed by using the effective photocatalytic properties of Co3O4 and TiO2. The resulting synthesized composite is supposed to offer superior properties compared to their counterparts. The synthesized Co3O4@TiO2
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Aluminum Alloys with the Addition of Reduced Deep-Sea Nodules Metals (IF 2.117) Pub Date : 2021-03-04 Alena Michalcová; Matouš Orlíček; Pavel Novák
An innovative way to utilize deep-sea manganese nodules is described in this paper. The manganese nodules were reduced by aluminothermy and subsequently added into aluminum as a mixture of alloying elements in their natural ratio. The microstructure and properties of aluminum alloys containing 1.2, 7.7, and 9.7 wt % of reduced nodules were studied. The alloys were formed by Al matrix and minor amounts
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A Study of the Feasibility of Using Ammonium Sulfate in Copper–Nickel Ore Processing Metals (IF 2.117) Pub Date : 2021-03-04 Andrey A. Goryachev; Elena V. Chernousenko; Sergey S. Potapov; Nikita S. Tsvetov; Dmitriy V. Makarov
The possibility of applying a combined concentration and metallurgical method for processing low-grade and refractory copper–nickel ores was considered. The resulting rougher and scavenger flotation concentrate contained 2.07% nickel and 0.881% copper at a recovery of 85.44% and 89.91%, respectively. The concentrate was then roasted with ammonium sulfate, followed by aqueous leaching of clinker to
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Review on the Influence of Temperature upon HydrogenEffects in Structural Alloys Metals (IF 2.117) Pub Date : 2021-03-04 Thorsten Michler; Frank Schweizer; Ken Wackermann
It is well-documented experimentally that the influence of hydrogen on the mechanical properties of structural alloys like austenitic stainless steels, nickel superalloys, and carbon steels strongly depends on temperature. A typical curve plotting any hydrogen-affected mechanical property as a function of temperature gives a temperature THE,max, where the degradation of this mechanical property reaches
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The Effect of 3D Representative Volume Element Grain Morphology Resolution on the Prediction of Fracture and Damage Accumulation for Multiphase Hot‐Stamped Steels Steel Res. Int. (IF 1.81) Pub Date : 2021-02-13 Alexander Bardelcik; Arshdeepsingh Sardar; Caryn J. Vowles
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Ceramic Foam Filter Micropores as Sites for Liquid Inclusion Retention Inter. J. Metalcast. (IF 1.347) Pub Date : 2021-03-04 Soumava Chakraborty; Ronald J. O’Malley; Laura Bartlett
In steel foundries, ceramic filters are often used to capture non-metallic inclusions. It is well documented that solid inclusions are captured and retained within the filter macropores at the metal-refractory interface. However, liquid inclusions appear to be captured and retained by two mechanisms: one within the filter web micropore structure and another as a liquid film at the metal-filter macropore
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Hot Deformation Characterization of Pure Aluminum Using artificial neural network (ANN) and Processing Map Considering Initial Grain Size Met. Mater. Int. (IF 1.99) Pub Date : 2021-03-04 H. R. Rezaei Ashtiani; A. A. Shayanpoor
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Copper Penetration of a Lance in a Smelting Furnace of the Mitsubishi Process Met. Mater. Int. (IF 1.99) Pub Date : 2021-03-04 Sung-Mi Lim; Kyung-Woo Yi
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Synthesis of Silicon Sulfide by Using CS 2 Gas Metall. Mater. Trans. B. (IF 2.035) Pub Date : 2021-03-03 Ryosuke O. Suzuki; Yuta Yashima; Takumi Kaneko; Eltefat Ahmadi; Tatsuya Kikuchi; Takafumi Watanabe; Genki Nogami
Silicon sulfide (SiS2) was synthesized from Si, SiC, Si3N4, and a eutectic Al-Si liquid. An Ar-CS2 gas mixture, after bubbling through liquid CS2, was passed over pulverized Si, SiC, Si3N4, or a eutectic Al-Si alloy liquid. White, needle-shaped SiS2 was precipitated as a single phase on the colder downstream surface when Si powder in a SiO2 liner was heated over 1273 K. This deposition mechanism involves
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Desulfurization Behavior of Fe-18Cr-18Mn Alloy during the Pressurized Electroslag Remelting with Different Atmospheres and Na 2 O-containing Slags Metall. Mater. Trans. B. (IF 2.035) Pub Date : 2021-03-03 Shou-Xing Yang; Hua-Bing Li; Hao Feng; Zhou-Hua Jiang; Min Chen; Tong He
Pressurized electroslag remelting (PESR) has been widely used for preparation of high-quality high nitrogen steels. However, desulfurization might be limited by the pressurized-nitrogen atmosphere in the process. In this paper, the desulfurization behaviors of electroslag remelting in air and nitrogen pressure were investigated and further an appropriate method to improve the sulfur removal in PESR
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Studies on Kinetics of BCC to FCC Phase Transformation in AlCoCrFeNi Equiatomic High Entropy Alloy Metall. Mater. Trans. A (IF 2.05) Pub Date : 2021-03-04 J. P. Panda; P. Arya; K. Guruvidyathri; Ravikirana; B. S. Murty
Kinetics of face-centered cubic (FCC) phase evolution in equiatomic AlCoCrFeNi alloy has been studied in this work, measuring the phase fraction from X-ray diffraction (XRD). As-cast alloy showed a body-centered cubic (BCC)+B2 structure. Heat treatments performed at different temperatures showed the formation up-to 30 to 35 pct FCC phase between 1073 K and 1373 K. A systematic decrease in hardness
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Effect of Secondary Explosive Welding on Microstructure and Mechanical Properties of 10CrNi3MoV Steel-Based Composite Plates Metall. Mater. Trans. A (IF 2.05) Pub Date : 2021-03-04 Changqing Ye; Weiguo Zhai; Guangyao Lu; Qingsong Liu; Liang Ni; Liang Ye; Xiao Fang
The secondary explosive welding process promotes the diffusion of the carbon element and accumulation of chromium carbide, which leads to a decrease of tensile properties and toughness of the material. In this work, the average shear strength value increased from 400 to 421 MPa. The crack of the fatigue specimens started from the inclusions rich in alumina near the surface, and the harmful hard-phase
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The Effect of Dissolved Nitrogen on the Fatigue Behavior of Ti-6Al-4V Metall. Mater. Trans. A (IF 2.05) Pub Date : 2021-03-03 C. R. Collins; F. F. Dear; D. Rugg; D. Dye
The effect of nitrogen additions on fatigue behavior has been examined in near-equiaxed, rolled Ti-6Al-4V bar. This is the first-time nitrogen content that has been systematically explored with respect to monotonic and cyclic properties in a Ti-6Al-4V alloy base composition. Nitrogen additions were found to increase the \(\beta \)-transus temperature and strength, but they decreased ductility, even
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Selective Laser Melting of Maraging Steels Using Recycled Powders: A Comprehensive Microstructural and Mechanical Investigation Metall. Mater. Trans. A (IF 2.05) Pub Date : 2021-03-03 Haokun Sun; Xin Chu; Zhiying Liu; Azimi Gisele; Yu Zou
Selective laser melting (SLM) is an additive manufacturing (AM) technique designed to use a high energy density laser to fuse metallic powders for producing three-dimensional parts. So far, most studies of SLM have been focused on using virgin metal powders. There are few comprehensive studies on the microstructure and mechanical properties of SLM-produced parts using recycled powders, especially for
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Microstructure Evolution and Mechanical Properties of cp-Ti Processed by a Novel Technique of Rotational Constrained Bending Metall. Mater. Trans. A (IF 2.05) Pub Date : 2021-03-03 T. Krajňák; M. Janeček; P. Minárik; J. Veselý; P. Cejpek; J. Gubicza; P. T. Hung; D. Preisler; F. Nový; A. G. Raab; G. I. Raab; R. Asfandiyarov
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Ising critical behavior and room temperature magnetocaloric effect in itinerant ferromagnetic Mn5Ge2.9Fe0.1 compound Intermetallics (IF 3.398) Pub Date : 2021-03-03 Swathi S; Arun K; Remya U D; Andrea Dzubinska; Marian Reiffers; Nagalakshmi R
In this work, a novel polycrystalline Mn5Ge2.9Fe0.1 compound has been prepared and a detailed analysis on structural, physical and magnetocaloric properties is carried out. Mn5Ge2.9Fe0.1 compound is a second order-itinerant ferromagnet with enhanced Sommerfeld coefficient. The resistivity of this compound is found to show saturation at high temperatures due to spin fluctuations in the compound. Critical
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High-temperature deformation behavior of a novel high strength and high elasticity Cu–20Ni–20Mn–0.3Nb–0.3Cr–0.1Zr alloy Intermetallics (IF 3.398) Pub Date : 2021-03-03 Bin Liu; Geying Zhao; Xinbin Zhang; Jiali Guo; Shen Gong; Guoliang Xie; Lijun Peng; Zhou Li
The elongation of high-strength copper alloy with tensile strength over 1300 MPa is generally less than 3%. In this paper, a novel Cu–20Ni–20Mn-0.3Nb-0.3Cr-0.1Zr(wt.%) alloy was prepared, of which the tensile strength, elastic modulus and elongation is 1445 MPa, 147 GPa and 6.8%, respectively. The flow stress strain and microstructure evolution during high temperature deformation at different strain
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Comparative investigation of oxidation behavior and hot corrosion behavior in NaCl–Na2SO4 mixture for a Ti2AlNb based alloy at 1023 K Intermetallics (IF 3.398) Pub Date : 2021-03-02 Jiayi Xiang; Faqin Xie; Xiangqing Wu; Shaoqing Wang
Oxidation behavior of a Ti2AlNb based alloy (Ti–22Al–23Nb (at.%)) and hot corrosion behavior of this alloy coated with a salt mixture of NaCl–Na2SO4 at 1023 K were comparatively investigated. The results showed that the alloy possessed relatively good oxidation resistance while suffered severe hot corrosion attack. The mass gain of the hot-corroded alloy was much larger than that of the oxidized alloy
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Energy efficient process for recovery of rare earths from spent NdFeB magnet by chlorination roasting and water leaching Hydrometallurgy (IF 3.338) Pub Date : 2021-02-23 Aarti Kumari; Raman Raj; N.S. Randhawa; Sushanta Kumar Sahu
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Non-radiative energy transfer in aqueously dispersed polymeric nanoparticles for photovoltaic applications Synth. Met. (IF 3.286) Pub Date : 2021-03-03 Maiara de Jesus Bassi; Luana Wouk; Wesley Renzi; Camilla Karla Oliveira; José Leonil Duarte; Ismael André Heisler; Lucimara Stolz Roman
Polymeric nanoparticles dispersed in an aqueous medium were synthesized using the miniemulsion technique. In this study, nanoparticles composed of copolymer F8T2, homopolymer MDMO-PPV and a mixture of both were investigated aiming to unravel the interaction between these materials. By decreasing the distance between the nanostructured materials, higher Förster resonance energy transfer (FRET) was observed
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A novel Yb3+/Tm3+ co-doped semiconductor sensitized up-conversion strategy for β-In2S3 photoanode with enhanced photoelectrochemical properties J. Alloys Compd. (IF 4.65) Pub Date : 2021-02-25 Qiujie Li; Jiawei Wang; Yufei Cheng; Lida Chen; Xinyang Liu; Wenwan Zhang; Qian Sun; Jun Fan; Hui Miao; Xiaoyun Hu
N-type β-Indium sulfide (β-In2S3) has emerged as one of the most promising semiconductor photoanode for use in photoelectrochemical water-splitting in recent years, its defective spinel structure facilitates the incorporation of foreign ions to adjust the photoelectrochemical (PEC) performance. Lanthanide ions with excellent optical properties and abundant energy level structure have attracted much
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The role of electronic affinity for dopants in thermoelectric transport properties of InTe J. Alloys Compd. (IF 4.65) Pub Date : 2021-02-17 Huaxing Zhu; Guiwen Wang; Guoyu Wang; Xiaoyuan Zhou; Xu Lu
We investigate the anisotropy in thermoelectric transport properties of pristine and self-doped InTe after spark plasma sintering and ascribe the observed weak anisotropy to the lack in orientation preference of investigated specimens as characterized by the scanning electron microscope. Then, the effect of Cu/Na doping on the transport properties of InTe is discussed for comparison, which suggests
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Niobium disulfide nanosheets modified surface plasmon resonance sensors for ultrasensitive detection of mercury ion J. Alloys Compd. (IF 4.65) Pub Date : 2021-02-25 Yue Jia; Yunlong Liao; Zhongfu Li; Houzhi Cai
Mercury ion (Hg2+) can affect the quality of water and cause damage to human health. Therefore, the detection of Hg2+ in water, especially trace Hg2+, is very important. However, the detection limit (approximately 200 pM) of conventional Hg2+ sensors is far lower than the detection limit (7.5 pM) proposed by the US Environmental Protection Agency for measuring Hg2+. Here, we have developed a novel
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Oxygen vacancies enhancing capacitance of MgCo2O4 for high performance asymmetric supercapacitors J. Alloys Compd. (IF 4.65) Pub Date : 2021-02-25 Hongzhi Wang; Nanyang Mi; Shaofeng Sun; Weiguo Zhang; Suwei Yao
Here, we report a facile strategy to synthesize MgCo2O4 with abundant oxygen vacancies (OV-MgCo2O4) using for the electrode materials of asymmetric supercapacitors (ACS). Benefiting from the NaBH4 reduction treatment to offer oxygen vacancies, the specific capacitance of OV-MgCo2O4 was improved to 460 F g−1 (1 A g−1), much higher than untreated MgCo2O4 (340 F g−1 at 1 A g−1). We fabricated OV-MgCo2O4//AC
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Binder-free MnO2 as a high rate capability cathode for aqueous magnesium ion battery J. Alloys Compd. (IF 4.65) Pub Date : 2021-02-20 Zhenzhen Liu; Wanhai Zhou; Jian He; Hui Chen; Ruixue Zhang; Qian Wang; Yao Wang; Yigang Yan; Yungui Chen
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Grain boundary discontinuity and performance improvement mechanism of wire arc additive manufactured Ti–6Al–4V J. Alloys Compd. (IF 4.65) Pub Date : 2021-02-20 Yong Xie; Mengcheng Gong; Ruize Zhang; Ming Gao; Xiaoyan Zeng; Fude Wang
Most recent studies for improving tensile properties of wire arc additive manufactured Ti–6Al–4V focused on layer-by-layer plastic deformation but with complicated operation. Previous study demonstrated that a sub-transus solution increased the strength and decrease the anisotropic ductility by generating a new micro-lamellae recrystallization to discontinue α grain boundaries (αGB). The current study
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