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Growth and Microstructure of r.f. Sputtered Fe/Ti Multilayers

Journal of materials science & Technology 2001年第5期17卷 521-524页

作者： wei wang shenyang national laboratory for materials science, institute of metal research, Chinese {2. of {3.s, shenyang 110016, china lishi wen department of surface engineering of materials, institute of metal research, Chinese {2. of {3. shenyang Natl. Lab. for Mat. Sci. Inst. of Metal Res. Chinese Acad. of Sci. Shenyang 110016 China

Fe/Ti multilayers with different modulation wavelengths (Lambda) prepared by r.f. sputtering has been investigated by using cross sectional transmission electron microscopy (XTEM). It was observed that the columnar structure, interface morphology, and metastable phase presented at the interface of the multilayer system strongly depend on the bilayer thickness (Lambda). For high period multilayers, the waviness wavelength of interfaces is about two times broader than the column diameter. For a sample with Lambda =3. nm, its column width and waviness wavelength was about 80, and 190 nm, respectively. Both of them decreased with the reduction of Lambda, so as to nearly equal values of column diameter and waviness wavelength were obtained. The Fe and Ti grains of both 3. nm and 6 nm multilayers are polycrystalline, and have a textured structure. In short bilayer thickness (Lambda =6 nm), the intermetallic compound Fe2.i was presented at the interfaces due to solid state reaction; for Lambda =2.nm, amorphous phase Ti-rich layer was formed at the interfaces, resulting in a sharp interface multilayer structure.

关键词： Ti Growth and Microstructure of r.f Sputtered Fe/Ti Multilayers Fe

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State of the art of lightweight aggregates used in lightweight refractories for working lining of high-temperature furnaces

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Journal of Iron and Steel research International 2024年第6期31卷 1320-1343页

作者： wei Zhang wen-yong Dai shenyang national {2. for {3. science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016LiaoningChina research and Development department AGC Plibrico(Dalian)Industries Inc.Dalian 116600LiaoningChina

Lightweight refractories for the working lining of high-temperature furnaces play an important role in the smelting of advanced steels and *** prepare lightweight refractories for the working lining of high-temperature furnaces,the synthesis of lightweight aggregates is the ***,the {3. on the synthesis of lightweight aggregates with high service temperature,low thermal conductivity,high strength,and good slag resistance has received widespread *** available literature on the synthesis of lightweight aggregates was summarized,including corundum,mullite,mullite-corundum,spinel,corundum-spinel,cordierite,cordierite-mullite,calcium hexaluminate,corundum-calcium hexaluminate,bauxite,magnesia,magnesia-based,and forsterite-based ***,the future development trend of lightweight aggregates was proposed.

关键词： Lightweight aggregate Lightweight refractory Working lining Apparent porosity Closed porosity Thermal conductivity Pore-forming approach

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Enhanced linear magneto-resistance near the Dirac point in topological insulator Bi2.Te1−xSex)3.nanowires

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Nano research 2020年第5期13卷 1332-1338页

作者： LingNan wei ZhenHua wang ZhiDong Zhang Chieh-{2. Liu Xuan P.A.Gao shenyang national {2. for {3. science Institute of Metal ResearchChinese Academy of Sciences72 Wenhua RoadShenyang 110016China School of materials science and {2. University of Science and Technology of ChinaHefei 230026China department of Physics Case Western Reserve UniversityClevelandOhio 44106USA

We report the composition and back-gate voltage tuned transport properties of ternary compound Bi2.Te1−xSex)3.nanowires synthesized by chemical vapor deposition(CVD).It is found that the population of bulk carriers can be suppressed effectively with increasing the Se concentration *** Bi2.Te1−xSex)3.nanowires with x=2.%±5%,the ambipolar {3. conduction associated with tuning the Fermi energy across the Dirac point of topological {3. states is induced by applying a back-gate ***,we find that while the magnetoresistance(MR)follows the weak antilocalization(WAL)behavior when the Fermi level is tuned away from the Dirac point,MR is enhanced in magnitude and turns more linear in the whole magnetic field range(between±9 T)near the Dirac *** observation of the enhanced linear magneto-resistance(LMR)and crossover from WAL to LMR,near the Dirac point provides a deeper insight into understanding the nature of topological insulator’s {3. transport and the relation between these two widely observed magneto-transport phenomena.

关键词： Topological insulator nanowire ambipolar conduction bismuth selenide bismuth telluride linear magneto-resistance weak anti-localization

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Prediction of blast furnace gas generation based on data quality improvement strategy

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Journal of Iron and Steel research International 2023年第5期30卷 864-874页

作者： Shu-han Liu wen-qiang Sun wei-dong Li Bing-zhen Jin department of Energy engineering School of MetallurgyNortheastern UniversityShenyang 110819LiaoningChina State Environmental Protection Key laboratory of Eco-Industry(Northeastern University) Ministry of Ecology and EnvironmentShenyang 110819LiaoningChina State Key laboratory of metal Material for Marine Equipment and Application Anshan 114009LiaoningChina Ansteel Iron and Steel research institute Ansteel Group Corporation LimitedAnshan 114009LiaoningChina General Heavy Section Mill Angang Steel Company LimitedAnshan 114021LiaoningChina

The real-time energy flow data obtained in industrial production processes are usually of low *** is difficult to accurately predict the short-term energy flow profile by using these field data,which diminishes the effect of industrial big data and artificial intelligence in industrial energy *** real-time data of blast furnace gas(BFG)generation collected in iron and steel sites are also of low *** order to tackle this problem,a three-stage data quality improvement strategy was proposed to predict the BFG *** the first stage,correlation principle was used to test the sample *** the second stage,the original sample set was rectified and *** the third stage,Kalman filter was employed to eliminate the noise of the updated sample *** method was verified by autoregressive integrated moving average model,back propagation neural network model and long short-term memory *** results show that the prediction model based on the proposed three-stage data quality improvement method performs *** short-term memory model has the best prediction performance,with a mean absolute error of 17.85 m3.min,a mean absolute percentage error of 0.2.%,and an R squared of 95.17%.

关键词： Blast furnace gas Iron and steel industry Data quality improvement Artificial intelligence Gas generation prediction

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2. titanium carbide(MXene) electrodes with lower-F surface for high performance lithium-ion batteries

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Journal of Energy Chemistry 2019年第4期28卷 148-153页

作者： Ming Lu Haojie Li wenjuan Han Junnan Chen wen Shi Jiaheng {2. Xiang-Min Meng Jingang Qi Haibo Li Bingsen Zhang {3. Zhang {3.tao Zheng Key laboratory of Automobile materials MOE School of Materials Science & Engineering Electron Microscopy Center International Center of Future Science Jilin University shenyang national {2. for {3. science Institute of Metal Research Chinese Academy of Sciences department of Mechanical engineering Hefei University of Technology Key laboratory of Functional materials Physics and Chemistry of the Ministry of Education Jilin Normal University Key laboratory of Photochemical Conversion and Optoelectronic materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences School of Material science & engineering Liaoning University of Technology

MXene has shown distinctive advantages as anode materials of lithium-ion batteries. However, local surface chemistry, which was confirmed that can block ion transfer and limit redox reaction, has a significant effect on electrochemical performance. Herein, annealing MXene under hydrogen was employed for removing-F and turning-OH to-O terminations. We demonstrate that it improves the kinetics of Li-ion transport between the electrolyte and electrode. As a result, a lower interfacial charge transfer impedance was obtained. The electrochemical measurement exhibited that a nearly 2.fold increase of specific capacity was achieved for the annealed MXene.

关键词： Ti3.2 MXene Li-ion Hydrogen -F content

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