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Novel Insight into the Preparation of Ti-6Al-4V Alloy Through Thermite Reduction Based on the Mass Action Concentration

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Journal of Wuhan University of Technology(Materials Science) 2023年第3期38卷 652-658页

作者：宋玉来 DOU Zhihe cheng chu 张廷安 School of Materials Science and Engineering Liaocheng UniversityLiaocheng 252059China Key Laboratory of Ecological Metallurgy of Multi-metal Intergrown Ores Ministry of EducationNortheastern UniversityShenyang 110819China School of Materials Science and Engineering Henan University of Science and TechnologyLuoyang 471003China

Based on the mass action concentration theory,a novel thermodynamic analysis for the raw material ratio in the procedure of preparing Ti-6Al-4V alloy by aluminothermic reduction process is proposed in this paper,which is originated from TiO_(2),Al particles,and V_(2)O_(5) as feedstocks,and the relevant equilibrium thermodynamics was calculated through this new *** results show that the range of aluminum addition coefficient in raw material to experiment should be controlled within 61.5%-100%,which can significantly reduce the number of experimental *** method is ready to regulate the matter of excessive aluminum content in reactants for materials preparation,especially for those reactions including elements that are effortless to combine with aluminum to form the corresponding intermetallics or *** addition,it can also be used in general metallurgy or material preparation process to effectively predict the composition and proportion of equilibrium components under certain conditions.

关键词： mass action concentration titanium alloy thermodynamics intermetallics thermite reduction

Multistage desulfurization mechanism to reduce sulfur content of high ferrotitanium prepared using thermite method

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Rare Metals 2021年第8期40卷 2313-2319页

作者： chu cheng Zhi-He Dou Ting-An Zhang Yu-Lai Song Collaborative Innovation Center of Nonferrous Metals Henan Province School of Materials Science and EngineeringHenan University of Science and TechnologyLuoyang471003China Key Laboratory of Ecological Utilization of Multi-metal Intergrown Ores of Ministry of Education Northeastern UniversityShenyang110819China

High ferrotitanium is used as a deoxidizer and alloying agent in steelmaking processes and is mainly produced using high-cost remelting *** thermite method is a simple and low-cost method for preparing low ***,the high levels of S,Al,and O residues in the product severely restrict its applicability in the low-cost preparation of good-quality high *** this study,a novel multistage deep reduction method for preparing high-quality high ferrotitanium is proposed,and the multistage desulfurization mechanism is systematically *** results indicate that multistage desulfurization is an effective method for reducing the S content of high ferrotitanium prepared via the thermite *** the strong desulfurization stage,Ti_(2)S reacts with CaO at the slag-metal interface and produces *** S content decreases,while the O content increases,with the increase of CaO in the CaO-Al_(2)O_(3)-based *** the deep desulfurization,Ti_(2)S is deeply reduced by the Ca and produces CaS,thus further reducing the S *** S content decreases with the incremental addition of Ca and can be reduced to 0.035 wt%after multistage desulfurization.

关键词： Multistage desulfurization High ferrotitanium Thermite method Multistage reduction Deep reduction

Effect of sintering temperature on the microstructure and thermal conductivity of Al/diamond composites prepared by spark plasma sintering

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International Journal of Minerals,Metallurgy and Materials 2010年第2期17卷 234-240页

作者： Ke chu cheng-chang Jia Xue-bing Liang Hui Chen School of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 China

Spark plasma sintering was used to fabricate Al/diamond *** effect of sintering temperature on the microstructure and thermal conductivity（TC） of the composites was investigated with the combination of experimental results and theoretical *** composite sintered at 550℃shows high relative density and strong interfacial bonding,whereas the composites sintered at lower（520CC） and higher（580-600℃） temperatures indicate no interfacial bonding and poor interfacial bonding,*** relative density and strong interfacial bonding can maximize the thermal conductivity of Al/diamond composites,and taking both effects of particle shape and inhomogeneous interfacial thermal conductance into consideration can give a fairly good prediction of composites＇ thermal conduction properties.

关键词： metal matrix composites thermal properties spark plasma sintering interface

Recovery of nickel,cobalt,copper and zinc in sulphate and chloride solutions using synergistic solvent extraction

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Chinese Journal of Chemical Engineering 2016年第2期24卷 237-248页

作者： chu yong cheng keith r.barnard wensheng zhang zhaowu zhu yoko pranolo Minerals Resources Flagship KarawaraWA 6152Australia

A number of synergistic solvent extraction （SSX） systems have been developed to recover nickel, cobalt, zinc and copper from sulphuric and chloride leach solutions by the solvent extraction team of CSIRO, Australia. These in- clude （1） Versatic 10/CLXS0 system for the separation of Ni from Ca in sulphate solutions, （2） Versatic 10/4PC system for the separation of Ni and Co from Mn/Mg/Ca in sulphate solutions, （3） Cyanex 471X/HRJ-4277 system for the separation of Zn from Cd in sulphate solutions, （4） Versatic 10/LIX63 system for the separation of Co from Mn/Mg/Ca in sulphate solutions, （5） Versatic 10/LIX63/TBP system for separation of Ni and Co from Mn/Mg/Ca in sulphate solutions, （6） Versatic 10/LIX63 system for the separation of cobalt from nickel in sulphate solutions by difference in kinetics, （7） Cyanex 272/LIX84 system for the separation of Cu/Fe/Zn from Ni/Co in sulphate solutions, （8） Versatic 10/LIX63fFBP system to recover Cu/Ni from strong chloride solutions, and [9） Versatic 10/LIX63 system to separate Cu from Fe in strong chloride solutions. The synergistic effect on metal separation and efficiency is presented and possible industrial applications are demonstrated. The chemical stability of selected SSX systems is also reported.

关键词： Synergistic solvent extraction Nickel Cobalt Copper Zinc

Sulfur–nitrogen co-doped graphene supported cobalt–nickel sulfide rGO@SN-CoNi_(2)S_(4) as highly efficient bifunctional catalysts for hydrogen/oxygen evolution reactions

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Rare Metals 2022年第3期41卷 911-920页

作者： Bing-Lu Deng Li-Ping Guo Yuan Lu Hai-Bo Rong Dong-chu cheng School of Materials Science and Hydrogen Energy Foshan UniversityFoshan 528000China Guangdong Key Laboratory for Hydrogen Energy Technologies Foshan 528000China School of Environment and Energy South China University of TechnologyGuangzhou 510006China

Designing highly active and stable electrocata-lysts for hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)is a challenge for energy con-version and storage *** this work,a S and N co-doped graphene supported cobalt–nickel sulfide composite catalyst(rGO@SN-CoNi_(2)S_(4))was synthesized simply via a one-step hydrothermal *** as-synthesized CoNi_(2)S_(4)particles grew in a mosaic manner inside GO lamellae and were encapsulated with *** a bifunctional catalyst,the r GO@SN-CoNi_(2)S_(4)exhibits excellent electrocatalytic performance under alkaline con-ditions,which only required the overpotential of 142.6 mV(***)and 310 m V(***)to deliver a current density of 10 mA·cm^(-2) for HER and OER,*** good hydrophilicity of the r GO@SN,the pure phase of bimetallic structure,and the chemical coupling/interaction between the CoNi_(2)S_(4)and the rGO@SN are attributable to be the possible reasons responsible for the higher HER and OER catalytic ***,the rGO@SN-CoNi_(2)S_(4)also shows a great potential for serving as an excellent cathode and anode electrolyzer during the water splitting process.

关键词： Hydrogen evolution reaction Oxygen evolution reaction S and N co-doped grapheme Cobalt–nickel sulfide Water splitting

Electrocatalytic Synthesis of Non-Symmetric Biphenols Mediated by Tri(p-bromophenyl)amine:Selective Oxidative Cross-Coupling of Different Phenols and Naphthols

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Chinese Journal of Chemistry 2019年第4期37卷 352-358页

作者： Qing-Qing Wang Yang-Ye Jiang cheng-chu Zeng Bao-Guo Sun Beijing Advanced Innovation Center for Food Nutrition and Human Health School of Food and Chemical EngineeringBeijing Technology and Business UniversityBeijing 100048China Beijing Key Laboratory of Environmental and Viral Oncology College of Life Science & BioengineeringBeijing University of TechnologyBeijing 100124China

An efficient electrochemical access to the non-symmetric biphenols using tri(p-bromophenyl)amine(TBPA)as a redox mediator has been *** electrochemical protocol features highly selective cross-coupling products in up t... 详细信息

关键词： Non-Symmetric Biphenols Mediated Tri(p-bromophenyl)amine Phenols Naphthols

Approach to N-Alkoxy-2-oxoindole for Mimicing SERMs Structure

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Chinese Chemical Letters 2005年第12期16卷 1593-1596页

作者： Ji cheng chu Dong Zhi LIU Hong Sheng GUO Kang ZHAO School of Chemical Engineering and Technology Tianjin University Tianjin 300072 Medical College Chinese People＇s Armed Police Force Tianjin 300071 College of Pharmaceutical and Biotechnology Tianjin UniversityTianjin 300072

Treatment of N-alkoxyamides with bis（trifluoroacetoxy）iodobenzene generated electron deficient nitrogen species, which readily cyclized onto aromatic ring to give N-alkoxy-2- oxoindoles. The effect of different subs... 详细信息

关键词： N-Alkoxyamides bis(trifluoroacetoxy)iodobenzene intramolecular cyclization

Studying the potential of QQq at finite temperature in a holographic model

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Chinese Physics C 2022年第7期46卷 15-26页

作者： Xun Chen Bo Yu Peng-cheng chu Xiao-hua Li School of Nuclear Science and Technology University of South ChinaHengyang 421001China The Research Center for Theoretical Physics Science SchoolQingdao University of Technology Qngdao 266033China The Research Center of Theoretical Physics Qingdao University of Technology Qigdao 266033China

Using gauge/gravity duality,we investigate the string breaking and dissolution of two heavy quarks coupled to a light quark at finite *** is found that three configurations of QQq exist with the increase in separation distance for heavy quarks in the confined ***,string breaking occurs at the distance L_(QQq)=1.27 fm(T=0.1 GeV)for the decay mode QQq→QQq+*** the deconfined phase,QQq melts at a certain distance and then becomes free ***,we compare the potential of QQq with that of QQ,and it is found that QQ is more stable than QQq at high temperatures.

关键词： doubly heavy baryons holographic QCD potential

Systematic study of proton radioactivity half-lives based on the relationship between Skyrme-Hartree-Fock and the macroscopic quantities of nuclear matter

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Chinese Physics C 2022年第10期46卷 156-162页

作者： Jun-Hao cheng Zhen Zhang Xi-Jun Wu Peng-cheng chu Xiao-Hua Li School of Nuclear Science and Technology University of South ChinaHengyang 421001China Sino-French Institute of Nuclear Engineering and Technology Sun Yat-sen UniversityZhuhai 519082China School of Math and Physics University of South ChinaHengyang 421001China School of Science Qingdao Technological UniversityQingdao 266000China Cooperative Innovation Center for Nuclear Fuel Cycle Technology&Equipment University of South ChinaHengyang 421001China Key Laboratory of Low Dimensional Quantum Structures and Quantum Control Hunan Normal UniversityChangsha 410081China

In this study,we systematically investigate the proton radioactivity half-lives of 33 spherical nuclei based on the relationship between Skyrme parameters and the macroscopic quantities of nuclear *** the two-potential approach with the spherical Skyrme-Hartree-Fock model,the correlation between proton radioactivity half-life and the macroscopic quantities is ***,we obtain a new Skyrme parameter set by fitting the two most weighted macroscopic *** with the Skyrme parameters MSLO and the theoretical model of proton radioactivity UDLP,the theoretical proton radioactivity half-life calculated using the new Skyrme parameter set can better reproduce the experimental data.

关键词： proton radioactivity Skyrme Hartree-Fock macroscopic quantities of nuclear matter