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Magnesium Technology Symposium held at the TMS Annual Meeting and Exhibition, 2024

作者： Mc Arthur Sehar, Daniel Telgerafchi, Armaghan Ehsani Iurkovskyi, Artem Opoku, Emmanuel Powell, Adam Materials Science and Engineering Program Department of Mechanical Engineering Worcester Polytechnic Institute WorcesterMA United States Department of Mechanical Engineering Worcester Polytechnic Institute WorcesterMA United States

ISBN: (纸本)9783031502392

MagnesiumMagnesium metal has been significantly used in commercial applications from automobiles to aluminum alloys to defense weaponry. The surge in structural usage of magnesium over the past years has been due to high strength and excellent stiffness-to-weight ratio. RecyclingRecycling magnesium scrap is a crucial aspect of the sustainability of the economy and environmental welfare. G-METS is an advanced distillationDistillation system used in the conversion of low-grade magnesium scrap into high-purityHigh-purity magnesium metal. This multiple-effect system uses the weight of magnesiumMagnesium as a compressor, to build pressure differences between each effect of the condenser-evaporator, modifying boiling points, and enabling transfer of vaporization enthalpy. This system is exceptionally efficient compared to the energy-intensive conventional distillationDistillation technique. This study compares experiments and models of one- and two-effect distillers. © The Minerals, Metals & materials Society 2024.

关键词： Magnesium alloys

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Tunable antiferroelectric-like polarization behavior and enhanced energy storage characteristics in symmetric BaTiO_(3)/BiFeO_(3)/BaTiO_(3) heterostructure

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Journal of Materiomics 2024年第6期10卷 1290-1298页

作者： Ying Wang Hanfei Zhu Hongyu Luo Jianting Li Yu Huan Yuyao Zhao Li Li Hongbo Cheng Chao Liu Qingguo Chi Jun Ouyang School of Chemistry and Chemical Engineering Qilu University of Technology(Shandong Academy of Sciences)Jinan250353China School of Mechanical Engineering Qilu University of Technology(Shandong Academy of Sciences)Jinan250353China Key Laboratory of Engineering Dielectrics and Its Application(Ministry of Education) Harbin University of Science and TechnologyHarbin150080China School of Material Science and Engineering University of JinanJinan250022China State Key Laboratory of Metal Matrix Composites School of Material Sciences and EngineeringShanghai Jiao Tong UniversityShanghai200240China Key Laboratory of Key Film Materials&Application for Equipments(Hunan Province) Hunan Provincial Key Laboratory of Thin Film Materials and DevicesSchool of Material Sciences and EngineeringXiangtan UniversityXiangtan411105China

The excellent energy storage performances of dielectric materials,a high energy density and efficiency,the stability in a wide range of temperature,frequency and cycling time,are surely desirable for the energy storage devices.A trade-off relationship between polarization and breakdown strength,however,limits the enhancement of energy storage properties of dielectric *** effectively boost the energy density and efficiency of dielectric capacitors,by inserting a BiFeO_(3) layer into the BaTiO_(3) film in present case,the symmetric BaTiO_(3)/BiFeO_(3)/BaTiO_(3) tri-layer film heterostructure with antiferroelectric-like characteristics was constructed based on the dual-interlayer coupling effect,what's more,its antiferroelectric-like characteristics will evolve with electric *** the tunable polarization behavior endows it with an enhanced maximum polarization but a reduced remnant one,a delayed saturation of polarization and a high breakdown strength,which are synergistically accountable for a large energy density(Wrec∼109 J/cm^(3))and a high efficiency(η∼82.6%),together with the good thermal(TR∼200℃,ΔWrec<3%&Δη<10%)and frequency(50 Hz–10 kHz,ΔWrec<7%&Δη<13%)stabilities,particularly an outstanding cycling reliability(10^(9) cycles,both ΔWrec and Δη<1%).Hence these findings can provide some innovative ideas for enriching the performance tuning of ferroelectrics,especially in enhancing their energy storage characteristics.

关键词： Antiferroelectric-like Tri-layer film heterostructure Tunable polarization behavior Interlayer coupling Energy storage

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Simulation Analysis of Stress Field of Walnut Shell Composite Powder in Laser Additive Manufacturing Forming

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Journal of Renewable materials 2023年第1期11卷 333-347页

作者： Yueqiang Yu Tingang Ma Suling Wang Minzheng Jiang Yanling Guo Ting Jiang Shuaiqi Huang Ziming Zheng Bo Yan Jiyuan Lv College of Mechanical Science and Engineering Northeast Petroleum UniversityDaqing163318China College of Mechanical and Electrical Engineering Northeast Forestry UniversityHarbin150040China Research and Development Center of 3D Printing Material and Technology Northeast Forestry UniversityHarbin150040China

A calculation model of stress field in laser additive manufacturing of walnut shell composite powder(walnut shell/Co-PES powder)was *** DFLUX subroutine was used to implement the moveable application of a double ellipsoid heat source by considering the mechanical properties varying with *** stress field was simulated by the sequential coupling method,and the experimental results were in good accordance with the simulation *** addition,the distribution and variation of stress and strain field were obtained in the process of laser additive manufacturing of walnut shell composite *** displacement of laser additive manufacturing walnut shell composite parts gradually decreased with increasing preheating temperature,decreasing laser power and increasing scanning *** the cooling process,the displacement of laser additive manufacturing of walnut shell composite parts gradually increased with the increasing preheating temperature,decreasing scanning speed and increasing laser power.

关键词： Selective laser sintering agricultural and forestry wastes walnut shell stress field warping deformation

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Non-isothermal Crystallization and Thermal Transformation Behaviors of Plasma Sprayed Fe_(48)Cr_(15)Mo_(14)C_(15)B_(6)Y_(2)Amorphous Coating

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Journal of Wuhan University of Technology(materials science) 2024年第6期39卷 1397-1405页

作者： WANG Miqi ZHOU Zehua YI Yu ZHANG Xin SHI Fang Faculty of Mechanical and Material Engineering Huaiyin Institute of TechnologyHuai’an 223003China College of Materials Science and Engineering Hohai UniversityChangzhou 213200China Jiangsu Key Laboratory of Advanced Manufacturing Technology Huaiyin Institute of TechnologyHuai’an 223003China Research Laboratory of Computational Mechanics Huaiyin Institute of TechnologyHuai’an 223003China

The non-isothermal crystallization dynamic behavior and mechanism of plasma sprayed Fe_(48)Cr_(15)Mo_(14)C_(15)B_(6)Y_(2)coating were thoroughly *** phase transition and crystallization kinetics of the coating were elaborately investigated by differential scanning calorimetry(DSC),X-ray diffraction(XRD),scanning electron microscopy(SEM),and transmission electron microscopy(TEM).The findings reveal that the characteristic temperatures of the coating shift to an elevated temperature at a higher heating rate and the crystallization processes are thermally *** 3-rd step of crystallization processes is more susceptible to the continuously increased heating rate while the onset crystallization reaction is less sensitive to the continuously enhanced heating ***_(23)(C,B)_6 phase is inclined to precipitate than other crystal phases due to the substantial pre-generation ofα-*** onset nucleation and growth ofα-Fe crystals is tough due to a higher onset apparent activation ***,the transformation from Fe_(23)(C,B)_(6)to FeB is harder in comparison with the precipitation of other *** most parts of the three crystallization processes are dominated by three-dimensional diffusion model due to the fact that most values of local Avrami exponent are higher than 2.5.

关键词： plasma spraying non-isothermal crystallization phase transition diffusion mode

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Effect of Stirring and Lanthanum in the Steel on the Interfacial Reaction Between the Steel and the MgO-C Refractory

Effect of Stirring and Lanthanum in the Steel on the Interfa...

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materials Processing Fundamentals Symposium held at the TMS Annual Meeting and Exhibition, 2024

作者： Zhao, Mingzhe Zhang, Lifeng School of Materials Science and Engineering Yanshan University Qinhuangdao066004 China School of Mechanical and Material Engineering North China University of Technology Beijing100144 China

ISBN: (纸本)9783031501838

In the current study, laboratory experiments were performed to investigate the interfacial reaction between the molten steel and the MgO-C refractory, and the effect of lanthanum in the steel was studied. A dense MgO reaction layer with a 50 µm thickness at the interface between the quiescent steel without lanthanum and the refractory was observed. Under stirring condition, the thickness of the MgO reaction layer was only 25 µm and the layer was non-continuous and broken at some places. For the interfacial interaction between the lanthanum-bearing steel and the MgO-C refractory, under quiescent condition, a double-layer structure was generated, with a MgO layer close to the refractory side and a La2O3 layer close to the steel side. Under stirring condition, a La2O3-La2O2S layer was generated and afew LaAlO3 particles were embedded inside the MgO reaction layer. The stirring induced the dislodgement of MgO particles from the lining refractory into the molten steel. © The Minerals, Metals & materials Society 2024.

关键词： Magnesia

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Influence of Biomimetic Apatite Coating on the Biobehavior of TiO_(2)Scaffolds

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Journal of Bionic engineering 2024年第4期21卷 1975-1986页

作者： Shima Mahtabian Seyed Mehdi Mirhadi Nahid Hassanzadeh Nemati Melika Sharifi Fariborz Tavangarian Department of Biomedical Engineering University of DelawareNewarkDE19716USA Department of Ceramic Engineering Islamic Azad University(Shahreza Branch)ShahrezaIsfahan86145-311Iran Department of Biomedical Engineering Islamic Azad University(Science and Research Branch)TehranIran Mechanical Engineering Program School of ScienceEngineering and TechnologyPennsylvania State UniversityHarrisburgMiddletownPA17057USA Department of Materials Science&Engineering Islamic Azad University(Najaf Abad Branch)Najaf AbadIsfahan***Iran Biomedical Engineering Department Pennsylvania State UniversityState CollegeUniversity ParkPennsylvania16802USA

Immersion of scaffolds in Simulated Body Fluid(10SBF)is a standardized method for evaluating their bioactivity,simulating in vivo conditions where apatite deposits can be formed on the surface of scaffold,facilitating bone integration and ensuring their suitability for bone implant purposes,ultimately contributing to long-term implant *** effect of apatite deposition on bioactivity and cell behavior of TiO_(2)scaffolds was *** were soaked in 10SBF for different durations to form HAP layer on their *** results proved the development of a hydroxyapatite film resembling the mineral composition of bone Extracellular Matrix(ECM)on the TiO_(2)*** XRD test findings showed the presence of hydroxyapatite layer similar to bone at the depth of 10 nm.A decrease in the specific surface area(18.913 m^(2)g^(−1)),the total pore volume(0.045172 cm^(3)g^(−1)(at p/p0=0.990)),and the mean pore diameter(9.5537 nm),were observed by BET analysis which confirmed the formation of the apatite *** was found that titania scaffolds with HAP coating promoted human osteosarcoma bone cell(MG63)cell attachment and *** seems that immersing the scaffolds in 10SBF to form HAP coating before utilizing them for bone tissue engineering applications might be a good strategy to promote bioactivity,cell attachment,and implant fixation.

关键词： Titania Hierarchical meso/macro porous 10SBF Biomimetic apatite Coating

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Tribological Study of AA6061-Based Hybrid Composite Reinforced with Graphene, TiO2, and SiC Fabricated by Hot Isostatic Pressing 1

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1st International Conference on Recent Advancements in materials science and Technology, ICRAMST 2024

作者： Mohan, Madhu Manivannan, S. Ayyappadas, C. Kumar, P. Aneesh Viswas, K. Department of Mechanical Engineering NSS College of Engineering Kerala Palakkad India Department of Material Science Karpagam Academy of Higher Education Tamil Nadu Coimbatore India

ISBN: (数字)9783031699665

ISBN: (纸本)9783031699658

This investigation aims at the fabrication and characterization of a hybrid composite material using aluminum alloy 6061 (AA6061) as the matrix. AA6061 is reinforced with hard ceramic particles such as titanium dioxide (TiO2), silicon carbide (SiC), and soft graphene powder. A constant fraction of 10 and 3 wt%, respectively, of SiC and TiO2 made up the ceramic reinforcement phase. The fabrication process utilizes HIP where HIP parameters such as temperature and pressure along with graphene wt% were varied. The primary focus was to improve the wear behavior of AA6061 for various industrial applications. mechanical properties were evaluated by microhardness and wear tests to identify optimal conditions for maximizing wear resistance. At higher HIP processing temperatures and graphene content, the microhardness was found to be relatively high. SEM analysis revealed good bonding between the matrix and reinforcement phases and a fine distribution of both phases. The wear test results exhibited an initial decrease in wear rate with increasing graphene content, followed by an increase beyond a certain wt% of graphene. Finally, the Taguchi optimization technique was applied to refine the process parameters and enhance the wear performance of composites. This study provides insights into the fabrication, characterization, and optimization of AA6061-based hybrid composites with improved wear properties and mechanical performance. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： Titanium dioxide

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Sub-nanometer structured silicon-carbon composite nanolayers armoring on graphite for fast-charging and high-energy-density lithium-ion batteries

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Rare Metals 2023年第11期42卷 3692-3704页

作者： Zhen-Wei Li Mei-Sheng Han Jie Yu Songshan Lake Materials Laboratory Dongguan523808China Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems Shenzhen Engineering Lab for Supercapacitor MaterialsSchool of Material Science and EngineeringHarbin Institute of TechnologyShenzhenShenzhen 518055China Department of Mechanical and Energy Engineering Southern University of Science and TechnologyShenzhen518055China

Silicon/carbon composites are promising alternatives to current graphite anodes in commercial lithiumion batteries(LIBs)because of their high capacity and excellent ***,the unsatisfactory fastcharging capability and cycle stability of Si/C composites caused by slow charge transport capability and huge volume change under industrial electrode conditions severely hamper their ***,a novel Si/C anode was fabricated by homogeneously depositing amorphous C-Si nanolayers on graphite(C-Si@graphite).C-Si nanolayers with uniformly dispersed sub-nanometer Si particles in 3D carbon skeleton significantly boost electron and Li-ion transport and efficiently relieve Si's agglomeration and volume *** a result,the tailored C-Si@graphite electrodes show an excellent rate capacity(760.3 mAh·g^(-1)at 5.0C)and long cycle life of over 1000 cycles at 1.0C and800 cycles at 2.0C under industrial electrode *** addition,the assembled full cells(C-Si@graphite,anode;Li[Ni_(0.8)Co_(0.1)Mn_(0.1)]O_(2),cathode)present superior fastcharging capability(240.4 Wh·kg^(-1),charging for16.2 min,3.0C)and long cycle life(80.7%capacity retention after 500 cycles at 1.0C),demonstrating the massive potential of C-Si@graphite for practical application.

关键词： Si/C anode Sub-nanometer Si Fast-charging capability Lithium-ion batteries(LIBs)

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A Low-cost Surface Modified Battery-used Polyethylene Membranes for Reverse Osmosis Applications

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materials Research Innovations 2023年第5期27卷 348-354页

作者： Song, Yiye Zhang, Ye Yang, Hongjun Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials School of Materials Science and Engineering Jiangsu Collaborative Innovation Centre of Photovoltaic Science and Engineering Changzhou University Changzhou213164 China Department of Mechanical and Material Engineering Changzhou University Huaide College Jingjiang214500 China

Reverse osmosis (RO) membranes have been widely used in the field of membrane separation. However, most of the commercial RO membranes are fabricated based on a polysulphones- or polyethersulfone-modified polyethylene glycol terephthalate (PET) support, which are thick and exhibit poor solvent resistance. In this study, polyethylene (PE) battery membranes without any hydrophilic modification were directly used to prepare PE-RO membranes. The structures of the products were confirmed via attenuated total reflection Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and scanning electron microscopy. The resulting RO membrane prepared with 0.05 wt.% of trimesoyl chloride and 2 wt.% of m-phenylenediamine exhibited a water flux of 12.61 L m−2 h−1 with a desalination (NaCl) rate of 98.6%. The thickness of the PE-RO membrane is 80% of the thickness of the traditional RO membranes and hence has a wider application as a separation membrane. © 2022 Informa UK Limited, trading as Taylor & Francis Group.

关键词： Polyethylenes

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Investigation of Accuracy of Linear Motor Positioning Systems using Different Filters 11

Investigation of Accuracy of Linear Motor Positioning System...

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11th IEEE Open Conference of Electrical, Electronic and Information sciences, eStream 2024

作者： Urbonas, Edgaras Kilikevicius, Arturas Savickas, Julius Valaitis, Danielius Vilnius Gediminas Technical University Department of Mechanical and Material Engineering Vilnius Lithuania Vilnius Gediminas Technical University Institute of Mechanical Science Vilnius Lithuania

ISBN: (纸本)9798350352412

Fast-paced competition in the industrial environment requires high-precision, high-performance systems that allow industry players to stay on top. Precise changes to the mechanical structure of the positioning system are no longer sufficient. This paper examines the axis of a precision positioning system with a linear motor. System controllers (PIDs) of various architectures are investigated to determine their impact on the platform using three system controllers. © 2024 IEEE.

关键词： Linear motors

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