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Recycling of ironmaking and steelmaking slags in Japan and China

International Journal of Minerals,Metallurgy and Materials 2022年第4期29卷 739-749页

作者： Hiroyuki Matsuura Xiao Yang Guangqiang Li zhangfu yuan Fumitaka Tsukihashi Graduate School of Engineering The University of TokyoTokyo 113-8656Japan Key Laboratory of Coastal Environment and Resources of Zhejiang Province School of EngineeringWestlake UniversityHangzhou 310024China Institute of Advanced Technology Westlake Institute for Advanced StudyHangzhou 310024China Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education Wuhan University of Science and TechnologyWuhan 430081China Collaborative Innovation Center of Steel Technology University of Science and Technology BeijingBeijing 100083China The University of Tokyo Tokyo 113-8656Japan

The mass production of steel is inevitably accompanied by large quantities of *** treatment of ironmaking and steelmaking slags is a great challenge in the sustainable development of the steel *** and China are two major steel producing countries that have placed a large emphasis on developing new technologies to decrease slag emission or promote slag *** are almost completely reused or recycled in ***,due to stagnant infrastructural investments,future applications of slags in conventional sectors are expected to be *** new functions or applications of slags has become a research priority in *** example,the utilization of steelmaking slags in offshore seabeds to create marine forests is under *** is the top steel producer in the *** utilization ratios of ironmaking and steelmaking slags have risen steadily in recent years,driven largely by technological *** example,hot stage processing of slags for materials as well as heat recovery techniques has been widely applied in steel plants with good ***,increasing the utilization ratio of basic oxygen furnace slags remains a major *** innovations in slag recycling are crucial for the steel industries in Japan and ***,the current status and developing trends of utilization technologies of slags in both countries are reviewed.

关键词： ironmaking steelmaking slag recycling seawater stabilization

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Self-supporting hierarchically micro/nano-porous Ni_(3)P-Co_(2)P-based film with high hydrophilicity for efficient hydrogen production

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Journal of Materials Science & Technology 2021年第6期65卷 118-125页

作者： Xiangtao Yu Xiangyu Ren Yanwei Zhang zhangfu yuan Zhuyin Sui Mingyong Wang Collaborative Innovation Center of Steel Technology University of Science and Technology BeijingBeijing 100083China School of Chemistry&Chemical Engineering Yantai UniversityYantai 264005China State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

Designing efficient and stable non-precious metal HER(hydrogen evolution reaction)electrocatalysts with high large current density adaptability is significant for industrial application of hydrogen production by water ***,a facile strategy was developed to construct a multi-phase Ni3 P-Co_(2)P-(Ni-Co)film with self-supporting hierarchically micro/nano-porous structure by using bubble template method electrodeposition of self-supporting micro-porous Ni Co P film,oxygen-free annealing for phase separation producing Ni_(3)P-Ni-Co_(2)P-Co structure,and acid etching for constructing surface nano-porous *** effective active sites for HER was significantly increased due to the hierarchically micro/nano-porous structure,which not only enlarged the surface roughness,but enhanced the bubble detachment by improving the ***,the HER electrolysis durability was improved benefiting from the Ni_(3)P-Co_(2)P phases with high corrosion resistance(especially in acid solution)and the self-supporting film structure without ***,the Ni Co P-OA-AE film exhibited high HER catalytic performance,which delivered a current density of 10 m A cm^(-2)at a low overpotential of 42.9 and 39.7 m V in 1 M KOH and 0.5 M H_(2)SO_(4),*** also possessed high long-term electrolysis durability,and the cell voltage of water electrolysis using self-supporting porous Ni Co P-OA-AE||Ir O_(2)-Ta_(2)O_(5) electrolyzer at 500 m A cm^(-2)for 250 h in 0.5 M H_(2)SO_(4 )is only 2.9 V.

关键词： Self-supporting Micro/nano-porous film High hydrophilicity Bubble detachment High HER(hydrogen evolution reaction) catalytic performance

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Study on Carburizing and Temperature Rising of the Semi-Steel Melt with Plasma Heating

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Journal of Iron and Steel Research International 1997年第1期4卷 19-21页

作者： yuan zhangfu Zeng Jiaqing Huang Daochang Wan Tianji Fan Yousan Beijing University of Science and Technology Tsinghua University

Experiments were carried out on carburizing and temperature rising of the semi steel melt in a plasma induction *** of many factors, such as power supply mode,position of the plasma torch and bottom blown gas stirring,on heating efficiency and melt temperature distribution was studied. Melt temperature could be effectively controlled by plasma heating,and carbon content of semi steel melt increased from 1.92 % to 4.58 %, and the utilization rate of carbon reached up to 61.57 % during carburizing of the melt.

关键词： plasma heating carburizing temperature rising,semi steel melt

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Surface tension of molten Al-Si alloy at temperatures ranging from 923 to 1123 K

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Chinese Science Bulletin 2008年第17期53卷 2593-2598页

作者： DOU Lei yuan zhangfu LI JianQiang LI Jing WANG XiaoQiang Department of Energy and Resources Engineering College of Engineering Peking University Beijing 100871 China State Key Laboratory of Multi-phase Complex System Institute of Process Engineering Chinese Academy of Sciences Beijing Graduate University of Chinese Academy of Sciences Beijing 100039 China

The surface tension of molten AlSi20 alloy has been measured by using the sessile drop method at 923―1123 K under argon atmosphere in both heating-up and cooling processes. The result shows that the surface tension of this alloy decreases as long as temperature increases. The results of surface tension and contact angles in heating-up process have differences from those obtained in cooling process, because the metal microstructures have some changes at different temperatures based on the metal genetic theory. The surface tension of molten AlSi20 alloy and that of molten pure aluminum have been compared as well, and the temperature coefficient of AlSi20 alloy is slightly lower than that of Al. The result has been analyzed by the linear scanning analysis with ESEM. The concentration of silicon in most region of the bulk is lower than that of the surface and the addition of Si to pure Al decreases the surface tension of molten pure Al.

关键词：铝硅合金表面张力温度变化金属材料

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Spreading kinetics of a Sn-30Bi-0.5Cu alloy on a Cu substrate

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Chinese Science Bulletin 2012年第6期57卷 682-686页

作者： ZANG LiKun yuan zhangfu ZHAN YaPeng WANG ChenYu XU BingSheng Department of Chemistry School of Chemical and Biological EngineeringUniversity of Science and Technology BeijingBeijing 100083China College of Engineering Peking UniversityBeijing 100871China

The reactive wetting kinetics of a Sn-30Bi-0.5Cu Pb-free solder alloy on a Cu substrate was investigated by the sessile drop method from 493 to 623 *** triple line frontier,characterized by the drop base radius R was recorded dynamically with a high resolution CCD using different spreading processes in an Ar-H 2 *** found a good agreement with the De Gennes model for the relationship between ln(dR/dt) and lnR for the spreading processes at 493 and 523 ***,a significant deviation from the De Gennes model was found for the spreading processes at 548 and 623 *** experimental results show a complicated temperature effect on the spreading *** at the Sn-30Bi-0.5Cu/Cu interface were identified as Cu 6 Sn 5 adjacent to the solder and Cu 3 Sn adjacent to the Cu *** intermetallic compounds effectively enhanced the triple line mobility because of reaction product formation at the diffusion frontier.

关键词：传播过程动力学合金铜基板金属间化合物关系模型反应润湿无铅焊锡

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Wetting behavior and interfacial characteristic of Sn-Ag-Cu solder alloy on Cu substrate

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Chinese Science Bulletin 2010年第9期55卷 797-801页

作者： ZHANG XiaoRui yuan zhangfu ZHAO HongXin ZANG LiKun LI JianQiang Department of Energy&Resources Engineering College of EngineeringPeking UniversityBeijing 100871China State Key Laboratory of Multiphase Complex System Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China

Wettability of molten Sn-Ag-Cu alloy on Cu substrate has been determined by sessile drop method, as well as its dependence on time and temperature. It was found that the evolution of contact angle at the alloy’s melting point experienced four different stages. Especially, the contact angle was unstable and fluctuant in stage II, and gradually decreased in stage III mainly due to a chemical reaction between Sn-Ag-Cu alloy and Cu substrate. The contact angle decreased with increasing temperature, but increased slightly at 629 K, for another chemical reaction occurred. Interfacial characteristic has been further investigated by examining the sample’s cross section. Intermetallic compounds of Cu6Sn5 and β-Sn phase were found at the interface of Sn-Ag-Cu/Cu.

关键词： contact angle lead-free solder sessile drop method Sn-Ag-Cu intermetallic compounds

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Space Materials Science in China:*** Studies under Microgravity

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空间科学学报 2020年第5期40卷 946-949页

作者： ZHANG Xingwang YIN Zhigang YU Jianding yuan zhangfu ZHAO Jiuzhou LUO Xinghong PAN Mingxiang Institute of Semiconductors Chinese Academy of SciencesBeijing 100083 Centre of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049 Shanghai Institute of Ceramics Chinese Academy of SciencesShanghai 200050 Collaborative Innovation Center for Steel Technology University of Science and Technology BeijingBeijing 100083 Institute of Metal Research Chinese Academy of SciencesShenyang 110016 School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016 Institute of Physics Chinese Academy of SciencesBeijing 100191 School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049 Songshan Lake Materials Laboratorij Dongguan 523808

The virtual absence of gravity-dependent phenomena in microgravity allows an in-depth understanding of fundamental events that are normally obscured and therefore are difficult to study quantitatively on *** particular interest is that the low-gravity environment aboard space provides a unique platform to synthesize alloys of semiconductors with homogeneous composition distributions,on both the macroscopic and microscopic scales,due to the much reduced buoyancy-driven *** the other hand,the easy realization of detached solidification in microgravity suppresses the formation of defects such as dislocations and twins,and thereby the crystallographic perfection is greatly ***,the microgravity condition offers the possibilities to elucidate the liquid/solid interfacial structures,as well as clarify the microstructure evolution path of the metal alloys(or composites)during the solidification *** by these facts,growths of compound semiconductors and metal alloys were carried out under microgravity by using the drop tube,or on the scientific platforms of Tiangong-2 and *** following illustrates the main results.

关键词： Space materials Microgravity Bubble behavior Microstructural evolution

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Solidification and Crystal Growth on the SJ-10 Recoverable Scientific Experiment Satellite

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空间科学学报 2018年第5期38卷 836-838页

作者： YIN Zhigang ZHANG Xingwang WU Jinling LI Xiaoya YU Jianding yuan zhangfu Key Lab of Semiconductor Materials Science Institute of SemiconductorsChinese Academy of SciencesBeijing 100083 College of Materials Science and Opto-Electronic Technology University of Chinese Academy of SciencesBeijing 100049 State Key laboratory of High Performance Ceramics and Supe ne Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050 Collaborative Innovation Center of Steel Technology University of Science and Technology BeijingBeijing 100083 College of Engineering Peking UniversityBeijing 100871

The low-gravity environment aboard the space provides a unique platform for understanding crystal-growth-related phenomena that are masked by gravity on the Earth and for exploring new crystal growth techniques. We have characterized the wetting behavior of metal alloys and carried out melt growth of compound semiconductors under the support of materials science program in the SJ-10 recoverable satellite. We found that interfacial reaction plays a significant role in the interfacial evolution of Sn-based alloys. Detached growth of InAsSb was realized under microgravity, whereas during the terrestrial experiment the crystal and the crucible wall contact with each other. Moreover, the suppression of buoyancy-driven convection results in a more uniform composition distribution in the InGaSb and Bi_2Te_3-based semiconductor alloys.

关键词：科学实验卫星水晶生长 InAsSb 金属合金复合半导体半导体合金生长技术材料科学

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Sn-Ag-Cu/Cu体系界面反应动力学研究(英文)

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稀有金属材料与工程 2014年第12期43卷 2893-2897页

作者：徐红艳袁章福北京矿冶研究总院北京100070 北京大学北京100871

利用静滴法研究了Sn-Cu-Ag/Cu体系熔融焊料的润湿机理,结果发现,700 K是合金焊料铺展机理的转折点。利用DTA分析方法研究了界面反应,采用Kissinger方法计算了界面反应热动力学参数,另外,还研究了元素Cu对提高Sn-Ag-Cu/Cu体系界面反应活... 详细信息

利用静滴法研究了Sn-Cu-Ag/Cu体系熔融焊料的润湿机理,结果发现,700 K是合金焊料铺展机理的转折点。利用DTA分析方法研究了界面反应,采用Kissinger方法计算了界面反应热动力学参数,另外,还研究了元素Cu对提高Sn-Ag-Cu/Cu体系界面反应活化能的影响及对界面反应速率的抑制作用。

关键词：铺展机理润湿特性界面反应热动力学动力学

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Thermodynamic Calculation of Equilibrium between Carbon,FeO-containing Slag and CO-CO2-H2O Gas

Thermodynamic Calculation of Equilibrium between Carbon,FeO-...

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“第十届中国钢铁年会”暨“第六届宝钢学术年会”

作者： Wu Yan Matsuura Hiroyuki yuan zhangfu Tsukihashi Fumitaka College of Engineering Peking University Graduate School of Frontier Sciences The University of Tokyo

High temperature slags could act as not only heat carrier and catalyst but also reactants in some chemical reactions to produce syngas due to the individual components in slags. A new method is put forward to utilize the thermal energy of converter slag and generate CO and H gases which could be reused as energy. Thermodynamics of the reaction between carbon, FeO-CaO-SiO slag and CO-CO-HO gas was studied by thermodynamic calculation and the effects of slag composition, slag temperature and added carbon amount on the behavior of the production of H and CO gases were clarified.

关键词： FeO-containing slag steam fuel gas carbon thermodynamic calculation

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