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Effects of gravity on the electrodeposition and characterization of nickel foils

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International Journal of Minerals,Metallurgy and Materials 2011年第1期18卷 59-65页

作者： Ting Liu Zhan-cheng Guo Zhi wang ming-yong wang State Key Lab of Multiphase Complex System Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China Graduate University of Chinese Academy of Sciences Beijing 100049 China Key Laboratory of the Ministry of Education of China for Ecological and Recycle Metallurgy University of Science and Technology Beijing Beijing 100083 China

The effects of gravity on nickel electrodeposition,the morphology and mechanical properties of deposits were studied in a super gravity *** in a microgravity field were also presented based on the obtained experimental *** sweep voltammetry reveals that the nickel electrodeposition process is enhanced by increasing the gravity coefficient（G）.The limiting current density changes from 10.2 to 293.0 mA·cm-2 with the increase of the G value from 10-4 to *** morphology of deposits was analyzed by scanning electron microscopy（SEM） and atomic force microscopy（AFM）.The images show that the morphology deposited in the super gravity field has finer grain sizes and denser and smoother *** roughness reduces from 48.3 to 4.9 nm with the increase of the G value from 10-4 to ***,mechanical tests indicate that the mechanical properties of nickel foils are greatly improved due to introducing a super gravity field during electrodeposition.

关键词： metal foil nickel gravity microgravity electrodeposition mechanical properties

Editorial for special issue on high-temperature molten salt chemistry and technology

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International Journal of Minerals,Metallurgy and Materials 2020年第12期27卷 1569-1571页

作者： Shu-qiang Jiao ming-yong wang Wei-li Song State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China Institute of Advanced Structure Technology Beijing Institute of TechnologyBeijing 100081China

High-temperature molten salt consisting of metal cation and non-metal anion is a promising media to break the limits of aqueous solution due to high conductivity,wide electrochemical window,rapid mass transfer,high solubility to reactants,low vapor pressure,*** the past two hundred years,high-temperature molten salt chemistry and technology attract widely ***,molten salt electrolysis as an indispensable metallurgy technology has been applied industrially for metal extraction of Al,rare earth,and alkali/alkaline-earth *** is well known that industrial aluminum electrolysis was invented by Hall and Heroult in the end of the 19 th *** is a milestone and promotes the change of Al from noble metal to bulk *** present,the yield of Al has reached to 62 millions tons all over the world in ***-temperature molten salt chemistry and technology has brought a revolutionary advancement to human life and infrastructure construction.

关键词： chemistry earth molten

Direct electrochemical N-doping to carbon paper in molten LiCl-KCl-Li3N

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International Journal of Minerals,Metallurgy and Materials 2020年第12期27卷 1687-1694页

作者： Dong-hua Tian Zhen-chao Han ming-yong wang Shu-qiang Jiao State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

Graphite materials are widely used as electrode materials for electrochemical energy storage.N-doping is an effective method for enhancing the electrochemical properties of graphite.A novel one-step N-doping method for complete and compact carbon paper was proposed for molten salt electrolysis in the Li Cl-KCl-Li3 N *** results show that the degree of graphitization of carbon paper can be improved by the electrolysis of molten salts,especially at 2.0 *** gas was produced at the anode and nitrogen atoms can substitute carbon atoms of carbon paper at different sites to create nitrogen doping during the electrolysis *** doping content of N in carbon paper is up to 13.0 wt%.There were three groups of nitrogen atoms,*** N(N-Q),pyrrolic N(N-5),and pyridinic N(N-6)in N-doping carbon paper.N-doping carbon paper as an Al-ion battery cathode shows strong charge-recharge properties.

关键词： N-doping carbon paper molten salt electrolysis electrochemical process

One-step synthesis of hollow UO2 nanospheres via radiolytic reduction of ammonium uranyl tricarbonate

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Chinese Chemical Letters 2017年第2期28卷 197-200页

作者： yong-ming wang Qing-De Chen Xing-Hai Shen Beijing National Laboratory for Molecular Sciences Fundamental Science on Radiochemistry and Radiation Chemistry Laboratory Department of Applied Chemistry College of Chemistry and Molecular Engineering Peking University Beijing 100871 China

Black precipitates were successfully obtained by radiolytic reduction of ammonium uranyl tricarbonate in the aqueous solution of HCOONH_4 by one ***,SAED,EDS,and XRD analysis indicated that the precipitates consist of hollow UO2 nanospheres（φ：30-50 nm,wall thickness：8-15 nm,and cavity diameter：10-20 nm）.The effect of HCOONH4 concentration,irradiation time and dose rate on the morphology,and size of nanospheres was ***,a gas-bubble template mechanism was proposed.

关键词： Uranium dioxide Hollow nanospheres Ammonium uranyl tricarbonate(AUC) Hydrated electron(eaq^-) γ-Irradiation

Enhanced preparation of dendritic metallic vanadium in recyclable NaCl-KCl-VCl_(2) molten salt by V_(2)CO electrolysis

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Rare Metals 2024年第8期43卷 3961-3973页

作者： Jia-Liang An ming-yong wang yong-Zheng Jia Jin-Tao Zhang Bao-Yan Feng Shu-Qiang Jiao State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China College of Material Science and Engineering Hebei Province Laboratory of Inorganic Nonmetallic MaterialsNorth China University of Science and TechnologyTangshan 063210China

A promising method for the preparation of pure metallic vanadium via V_(2)CO anode electrolysis was proposed and *** simple and controllable synthesis of a molten chloride salt containing VCl_(2) by an insitu reaction between VCl_(3) and metallic vanadium was verified through thermodynamic analysis and ***-KCl-VCl_(2) molten salt exhibited excellent recycling performance and could be repetitively used to prepare metallic vanadium by V_(2)CO *** V^(2+) ions remained in the molten salt after *** electrolysis conditions,such as the cathode diameter,current density,V^(2+) ion concentration,and temperature,were optimised to maximise the current *** was also simulated to reveal the regulatory *** highest current efficiency was 85%.The purity of metallic vanadium was up to 99.8%.In this study,an easy and efficient preparation of pure metallic vanadium was achieved.

关键词： V_(2)CO Metallic vanadium Current efficiency Molten salt electrolysis

Optimal V_(2)O_(3) extraction by sustainable vanadate electrolysis in molten salts

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Tungsten 2024年第1期6卷 141-149页

作者： Bao-Yan Feng Zhong-Hua Zhao yong-Zheng Jia Jia-Liang An ming-yong wang State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China Beijing Key Laboratory of Green Recovery and Extraction of Rare and Precious Metals University of Science and Technology BeijingBeijing 100083China

Recently,an environmentally friendly electrolysis process of soluble vanadates is proposed and successfully confirmed for V_(2)O_(3) *** this paper,the solubilities of various vanadates(***_(3),Na_(4)V_(2)O_(7) and Na_(3)VO_(4))in NaCl molten salt are *** dependences of V_(2)O_(3) extraction on vanadate form,anode material and molten salt system are studied.A long-term electrolysis is carried *** result indicates that the solubilities of all vanadates are high and meet electrolytic *** to Na_(4)V_(2)O_(7) and Na_(3)VO_(4),NaVO_(3) exhibits larger current efficiency and lower electricity *** using SnO_(2) anode instead of graphite anode,the current efficiency of NaVO_(3) electrolysis can be increased to 58.1%and carbon pollution is avoided at 700℃.The extraction rate of V_(2)O_(3) reaches 81.3%after long-term electrolysis of 51 *** work optimizes the electrochemical preparation process of V_(2)O_(3) from various vanadates and contributes to the improvement of current efficiency and extraction rate.

关键词： Molten salt electrolysis Vanadate Vanadium trioxide Current efficiency

Reduction of residual stress in porous Ti6Al4V by in situ double scanning during laser additive manufacturing

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International Journal of Minerals,Metallurgy and Materials 2021年第11期28卷 1844-1853页

作者： Yi-wa Luo ming-yong wang Ji-guo Tu Yu Jiang Shu-qiang Jiao State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China Department of Orthopedics Peking University Third HospitalBeijing 100191China

Selective laser melting(SLM)technology plays an important role in the preparation of porous titanium(Ti)implants with complex structures and precise ***,the processing characteristics of this technology,which include rapid melting and solidification,lead to products with high residual ***,an in situ method was developed to restrain the residual stress and improve the mechanical strength of porous Ti alloys during laser additive *** brief,porous Ti6Al4V was prepared by an SLM three-dimensional(3D)printer equipped with a double laser system that could rescan each layer immediately after solidification of the molten powder,thus reducing the temperature gradient and avoiding rapid melting and *** indicated that double scanning can provide stronger bonding conditions for the honeycomb structure and improve the yield strength and elastic modulus of the *** with an energy density of 75%resulted in 33.5%–38.0%reductions in residual *** porosities of double-scanned specimens were 2%–4%lower than those of singlescanned specimens,and the differences noted increased with increasing sheet *** rescanning laser power should be reduced during the preparation of porous Ti with thick cell walls to ensure dimensional accuracy.

关键词： porous titanium selective laser melting additive manufacturing residual stress mechanical properties

An effective Method for Vegetable Supply Chain Quality Management 36

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An effective Method for Vegetable Supply Chain Quality Manag...

Optimization for Decentralized-Dual-Channel Supply Chain Based on Game Theory

第36届中国控制会议

作者： Hong Li YIN yong ming wang School of Computer Science and Information Technology Yunnan Normal University Faculty of Management and Economics Kunming University of Science & Technology

ISBN: (纸本)9781538629185

Quality control is the challenge of vegetable supply chain,in order to guarantee vegetable quality and reduce the system cost,in this paper,the vegetable supply chain quality problem be model with mixed integer linear *** model has been applied in a chili supply chain,it turned out that this model is useful to production and distribution process in the vegetable supply chain,it also useful to the design of vegetable supply chain.

关键词： Vegetable supply chain Quality control Mixed integer liner programming

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Optimization for Decentralized-Dual-Channel Supply Chain Bas...