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ferro-vanadium Slag in Improving Inner Chloride Solidification Rate of Cement materials

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Journal of Wuhan University of Technology(materials Science) 2023年第5期38卷 1065-1076页

作者： CHEN Pian ma Baoguo TAN Hongbo LIU Xiaohai State Key Laboratory of Silicate materials for Architectures Wuhan University of TechnologyWuhan 430070China School of materials Science and Engineering Zhengzhou UniversityZhengzhou 450052China

We investigated the effects of ferro-vanadium slag(FVS)as a supplemental cementing material which can dissolve a large amount of active aluminum phases without excessive pretreatment or excitation to enhance the inner chloride solidified rate(CSR)of cement-based ***-FVS pastes with 0-30%content of FVS was designed,and the CSR was *** at different curing ages were studied by X-ray diffraction(XRD)and thermo-gravimetric analysis(TGA);hydration heat and^(29)Si nuclear magnetic resonance(^(29)Si-NMR)were tested to analyze the hydration degree of the system;mechanical properties in cement-FVS system were evaluated by compressive strength test,pore structure and the fractal *** revealed that the incorporation of FVS could greatly promote the CSR of cement-FVS *** with the control groups,30%dosage of FVS could increase the CSR by 69%at 3 d,47%at 7d,36%at 28 d and 34%at 60 *** was demonstrated that the incorporation of FVS could enhance the chemical solidifying ability of chloride,and the main reason was the promoted generation of Kuzel’s salt and the Friedel’s salt in hydrate products,and the enhanced chloride migration resistance capacity by increasing the volume of gel pores in the cement-FVS *** the influence of FVS on strength performance,this paper suggested that the suitable dosage of FVS as a supplemental cementing material was around 10%.The study in this paper might provide one efficient path to promote the chloride solidifying capacity of cement-based material and meanwhile the comprehensive utilization of FVS.

关键词： ferro-vanadium slag chloride solidified rate cement-FvS system Friedel's salt Kuzel's salt

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基于“两化”融合钒氮合金生产增效节能降碳

铁合金 2024年第2期55卷 24-31页

作者：杨波陈国荣李强马飞虎中色(宁夏)东方集团有限公司宁夏石嘴山753000

为了解决钒氮合金生产中配混料系统不精准,产量低、能耗高,五氧化二钒单耗高,产品中钒含量不稳定,配碳比高及如何降低碳排放等问题,分析了物料配混料系统生产设备在系统中的执行能力,研究了推板窑砌筑技术、钒氮合金生产机理及推板窑设... 详细信息

为了解决钒氮合金生产中配混料系统不精准,产量低、能耗高,五氧化二钒单耗高,产品中钒含量不稳定,配碳比高及如何降低碳排放等问题,分析了物料配混料系统生产设备在系统中的执行能力,研究了推板窑砌筑技术、钒氮合金生产机理及推板窑设备还原氮化工艺曲线。结合物料特性及推板窑能耗,通过对原系统进行优化和生产系统过程控制,结合MES系统建设实现各生产工序间的横向及纵向信息集成以及实践验证确立推板窑参数的最佳运行区间,实现了生产过程精准控制,配碳比稳定控制在下限值,钒含量稳定在77.5%±0.1%,合理降低CO_(2)排放量,将推板窑能耗降幅53%,实现增效节能降碳。

关键词：钒氮合金五氧化二钒配混料系统工艺曲线 MES系统节能降碳

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硅铁冶炼用兰炭的调控制备与工业应用试验

铁合金 2024年第1期55卷 19-26页

作者：王毅邹冲马成李彦雄李彬李信李磊西安建筑科技大学冶金工程学院陕西西安710055 西京学院电子信息学院陕西西安710123 内蒙古正能化工集团有限公司内蒙古鄂尔多斯017200

介绍了硅铁冶炼用兰炭的调控制备方法,考察了依据调控制备方法生产的兰炭在硅铁冶炼中的应用,通过对调控制备兰炭的质量检测和其入硅铁炉后的冶炼指标进行追踪分析,证实了调控制备方法的可行性。试验结果表明:以优选原煤、调整干馏工艺... 详细信息

介绍了硅铁冶炼用兰炭的调控制备方法,考察了依据调控制备方法生产的兰炭在硅铁冶炼中的应用,通过对调控制备兰炭的质量检测和其入硅铁炉后的冶炼指标进行追踪分析,证实了调控制备方法的可行性。试验结果表明:以优选原煤、调整干馏工艺参数和入炉还原剂再优化为手段的调控制备方法可以稳定兰炭的质量,并有效降低硅铁冶炼电耗;通过对原煤热解兰炭的性能评估可预测其工业兰炭的性能,从而优选出可生产适宜硅铁冶炼用兰炭的原煤;通过优选原煤和调控干馏炉参数可生产出成分和性质稳定的高性能硅铁冶炼用兰炭。

关键词：兰炭硅铁工业应用

Whole-genome sequencing reveals selection signals among Chinese,Pakistani,and Nepalese goats

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Journal of Genetics and Genomics 2023年第5期50卷 362-365页

作者： Yefang Li Ying Gong Zhengkai Zhang Ling Li Xuexue Liu Xiaohong He Qianjun Zhao Yabin Pu Yuehui ma Lin Jiang Institute of Animal Sciences Chinese Academy of Agricultural SciencesBeijing 100193China CAAS-ILRI Joint Laboratory on Livestock and Forage Genetic Resources Institute of Animal ScienceChinese Academy of Agricultural SciencesBeijing 100093China College of Animal Science and Technology Qingdao Agricultural UniversityQingdaoShandong 266109China Centre d’Anthropobiologie et de Genomique de Toulouse Universite Paul SabatierToulouse 31000France

The goat(Capra hircus)is one of the oldest domesticated animal species,with archeological evidence indicating that its earliest domestication from the wild ancestor(bezoar)occurred in the Fertile Crescent 10,000 calibrated calendar years ago(Zeder and Hesse,2000).A variety of well-adapted goat breeds with excellent economic traits have been selected artificially and naturally for human needs in China,Pakistan,and *** example,cashmere goat breeds produce fine cashmere wool and are mainly distributed on the Himalayan Plateau(e.g.,Nepal and Tibet)and in cold northern China(e.g.,Inner Mongolia and Liaoning).The Toggenburg dairy goat is the most productive breed of dairy goat and is distributed in at least 50 countries on all continents(ferro et al.,2017).Pakistani ewes are reared mostly for meat and wool purposes,but some are used as dairy goats,such as the Bugi Toori goat and Pateri goat(Bilal et al.,2018).Additionally,indigenous goats of the southern Asian regions are well adapted to the local hot *** unique traits and biodiversity serve as genetic resources that can be used for the artificial breeding of ***,several studies have provided patterns of genome-wide characteristics in goat populations to explore the underlying genetic basis of trait formation and environmental adaptability in China(Zhang et al.,2018),Pakistan(Kumar et al.,2018),and Nepal(Sasazaki et al.,2021),***,due to the proximity of these geographic regions,the profiles of genetic differences,gene flow,and common genes related to high trait performance between goat populations from China,Pakistan,and Nepal remain unclear.

关键词： breeding adapted Whole

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工业硅渣浮选熔融分离提纯金属硅的实验研究

铁合金 2024年第2期55卷 8-11页

作者：王家发罗文波周登凤龙潇麻红刚罗达阳贵州理工学院材料与能源工程学院贵州贵阳550003 贵州雅友新材料有限公司贵州瓮安550400

介绍了使用工业硅渣浮选获得的工业硅粉,通过高温熔融法,分离残余渣相提纯工业硅,考察了不同气氛及熔剂添加量对渣-硅分离效果和工业硅杂质含量的影响。分别在空气气氛、氩气保护气氛及添加不同含量复合熔剂条件下,将10 g精矿样品于145... 详细信息

介绍了使用工业硅渣浮选获得的工业硅粉,通过高温熔融法,分离残余渣相提纯工业硅,考察了不同气氛及熔剂添加量对渣-硅分离效果和工业硅杂质含量的影响。分别在空气气氛、氩气保护气氛及添加不同含量复合熔剂条件下,将10 g精矿样品于1450℃熔融处理5 min,随后淬冷制样磨抛统计样品单位截面积内硅滴的尺寸分布,以判断硅滴熔融聚集长大与渣相分离的特性。同时,检测不同条件下,熔融处理后获得的工业硅典型杂质含量变化。结果表明:惰性保护气氛会阻碍硅滴聚集长大与残余渣相分离,添加1%~2%的熔剂可加速硅滴长大集聚与渣相分离。在空气气氛并添加2%熔剂的条件下,可显著脱除熔融工业硅中的钙、铝杂质,可在一定程度上脱除部分铁、钛杂质。

关键词：工业硅硅渣熔融分离提纯

Tunable vertical ferroelectricity and domain walls by interlayer sliding inβ-ZrI_(2)

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npj Computational materials 2021年第1期7卷 1600-1608页

作者： Xiaonan ma Chang Liu Wei Ren Sergey A.Nikolaev Physics Department State Key Laboratory of Advanced Special Steeland International Center of Quantum and Molecular StructuresShanghai UniversityShanghai 200444China materials Genome Institute and Shanghai Key Laboratory of High Temperature SuperconductorsShanghai UniversityShanghai 200444China Tokyo Tech World Research Hub Initiative(WRHI) Institute of Innovative ResearchTokyo Institute of Technology4259 NagatsutaMidori-kuYokohamaKanagawa 226-8503Japan Laboratory for materials and Structures Tokyo Institute of Technology4259 NagatsutaMidori-kuYokohamaKanagawa 226-8503Japan National Institute for materials Science MANA1-1 NamikiTsukubaIbaraki 305-0044Japan

Vertical ferroelectricity where a net dipole moment appears as a result of in-plane ionic displacements has gained enormous attention following its discovery in transition metal *** on first-principles calculations,we report on the evidence of robust vertical ferroelectricity upon interlayer sliding in layered semiconductingβ-ZrI_(2),a sister material of polar semimetals MoTe_(2)and WTe_(2).The microscopic origin of ferroelectricity in ZrI_(2)is attributed to asymmetric shifts of electronic charges within a trilayer,revealing a subtle interplay of rigid sliding displacements and charge redistribution down to ultrathin *** further investigate the variety of ferroelectric domain boundaries and predict a stable charged domain wall with a quasi-twodimensional electron gas and a high built-in electric field that can increase electron mobility and electromechanical response in multifunctional *** behaviour and a small switching barrier of ZrI_(2)hold promise for various ferroelectric applications,and our results provide important insights for further development of slidetronics ferroelectricity.

关键词： ferroelectric interlayer walls

Friction Stir Welding of Discontinuously Reinforced Aluminum matrix Composites:A Review

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Acta Metallurgica Sinica(English Letters) 2014年第5期27卷 816-824页

作者： D.Wang B.L.Xiao D.R.Ni Z.Y.ma Shenyang National Laboratory for materials Science Institute of Metal ResearchChinese Academy of Sciences

Friction stir welding （FSW） is considered a promising welding technique for joining the aluminum matrix composites （AMCs） to avoid the drawbacks of the fusion welding. High joint efficiencies of 60%-100% could be obtained in the FSW joints of AMCs. However, due to the existence of hard reinforcing particles in the AMCs, the wearing of welding tool during FSW is an unavoidable problem. Moreover, the low ductility of the AMCs limits the welding process window. As the hard materials such as ferro-Titanit alloy, cermet, and WC/Co were applied to produce the welding tools, the wearing of the tools was significantly reduced and the sound joints could be achieved at high welding speed for the AMCs with low reinforcement volume fraction. In this article, current state of understanding and development of welding tool wearing and FSW parameters of AMCs are viewed. Furthermore, the factors affecting the microstructure and mechanical properties of the joints are evaluated in detail.

关键词： Metal matrix composite Friction stir welding Particle, microstructure Wear

Optical spectroscopy study of Ca_3(Ru_(0.91)Mn_(0.09))_2O_7 single crystal in high magnetic fields

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Science Bulletin 2019年第1期64卷 20-25页

作者： Xueli Xu Jin Peng Junpei Zhang Zongwei ma Cheng Chen Junbo Han Bingjie Liu Lingfang Lin Xiaoshan Wu Zhiqiang mao Zhe Qu Zhigao Sheng Anhui Key Laboratory of Condensed matter Physics at Extreme Conditions High Magnetic Field Laboratory Chinese Academy of Sciences University of Science and Technology of China Collaborative Innovation Center of Advanced Microstructures Nanjing University School of Physics Southeast University Wuhan National High magnetic Field Center Huazhong University of Science and Technology School of Physics Nanjing University Department of Physics and Engineering Physics Tulane University

The magneto-optical spectrum, with magnetic fields up to 42 T, of double layered ruthenates Ca_3(Ru_(0.91)Mn_(0.09))_2O_7(CRMO) single crystal is studied. Both the temperature and magnetic field induced insulator-to-metal transitions(IMTs) are observed via magneto-optical properties of the crystal. The critical magnetic field(H//c) of IMT for CRMO is found to be as large as 35 T at 5 K. The fine structure of optical spectra identified the antiferromagnetic/ferro-orbital-ordering configurations of Ru 4d orbitals at low temperatures. Meanwhile, the configuration of orbital polarization of such double-layer CRMO single crystal is discussed. These results suggest that the orbital degree of freedom plays an important role in the field induced IMT of multi-orbital system.

关键词： Ruthenates High magnetic field Optical spectroscopy Insulator to metal transition

Oxygen‑Defect Enhanced Anion Adsorption Energy Toward Super‑Rate and Durable Cathode for Ni–Zn Batteries

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Nano-Micro Letters 2021年第11期13卷 128-141页

作者： Jia Yao Houzhao Wan Chi Chen Jie Ji Nengze Wang Zhaohan Zheng Jinxia Duan Xunying Wang Guokun ma Li Tao Hanbin Wang Jun Zhang Hao Wang Hubei Key Laboratory of ferro and Piezoelectric materials and Devices School of Microelectronics and Faculty of Physics and Electronic ScienceHubei UniversityWuhan 430062People’s Republic of China CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002People’s Republic of China Xiamen Key Laboratory of Rare Earth Photoelectric Functional materials Xiamen Institute of Rare Earth MaterialsHaixi InstituteChinese Academy of SciencesXiamen 361021People’s Republic of China

The alkaline zinc-based batteries with high energy density are becoming a research ***,the poor cycle stability and low-rate performance limit their wide ***,ultra-thin CoNiO2 nanosheet with rich oxygen defects anchored on the vertically arranged Ni nanotube arrays(Od-CNO@Ni NTs)is used as a positive material for rechargeable alkaline Ni–Zn *** the highly uniform Ni nanotube arrays provide a fast electron/ion transport path and abundant active sites,the Od-CNO@Ni NTs electrode delivers excellent capacity(432.7 mah g^(−1))and rate capability(218.3 mah g^(−1) at 60 A g^(−1)).Moreover,our Od-CNO@Ni NTs//Zn battery is capable of an ultra-long lifespan(93.0%of initial capacity after 5000 cycles),extremely high energy density of 547.5 Wh kg^(−1) and power density of 92.9 kW kg^(−1)(based on the mass of cathode active substance).Meanwhile,the theoretical calculations reveal that the oxygen defects can enhance the interaction between electrode surface and electrolyte ions,contributing to higher *** work opens a reasonable idea for the development of ultra-durable,ultra-fast,and high-energy Ni–Zn battery.

关键词： Ni-Zn battery Oxygen defect Nanotube array CoNiO2 nanosheet Adsorption energy