Article
Materials Science, Multidisciplinary
Hai Liu, Zhao-Hui Ma, Jing-Cun Huang, Jian-Dong Zhang, Guo-Qing Yan, Li-Jun Wang
Summary: The Al-Hf alloy containing 40% Hf was prepared by open aluminothermic reduction with a maximum recovery of 70.7%. The alloy consists of Al and Al3Hf phases, with an oxygen content of about 0.2%.
Article
Green & Sustainable Science & Technology
Liyu Chen, Jiaxin Yang, Yifan Zhang, Shaohua Wu, Youjian Yang, Wenju Tao, Zhaowen Wang
Summary: This study investigated the synthesis of an Al-Zr master alloy using a combination of aluminothermic reduction and molten salt electrolysis processes. The reduction parameters were optimized to achieve high Zr content and recovery rate in the alloy. Additionally, electrolysis of the reduced molten salt successfully extracted Zr, resulting in a high recovery rate. This two-step process shows feasibility for large-scale extraction of Zr and production of Al-Zr master alloys.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Crystallography
Sergey Savchenkov, Yaroslav Kosov, Vladimir Bazhin, Kirill Krylov, Rudolf Kawalla
Summary: Aluminum-erbium master alloys obtained by metallothermic reduction show a uniform distribution of intermetallic compounds and grain refinement effect. The microstructure varies depending on the erbium content, preserving eutectic structure at lower content and forming solid solution at higher content. The research provides valuable insights into the production and microstructural characteristics of Al-Er master alloys.
Article
Chemistry, Physical
Yifan Zhang, Xianwei Hu, Fengguo Liu, Jiaxin Yang, Liyu Chen, Wenju Tao, Aimin Liu, Zhongning Shi, Zhaowen Wang
Summary: In this study, the reaction process and reaction mechanism of the aluminothermic reduction of NaVO3 to prepare aluminum-vanadium intermediate alloy were investigated by experimental analysis and quantum chemical calculations. The study found that the reduction process of NaVO3 was a multi-step process and temperature played a critical role. The results showed that aluminum first interacted with NaVO3 to form an intermediate complex through electrostatic interaction, leading to the formation of aluminum-vanadium intermediate alloy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Juan Alberto Salas Aviles, Alfredo Flores Valdes, Jesus Torres Torres, Rocio Maricela Ochoa Palacios, Alfredo Alan Flores Saldivar
Summary: The study aims to determine the activation energy values for the aluminothermic reduction of MnO and Mn3O4 oxides derived from alkaline batteries. The reduction of Mn3O4 occurs in stages, indicating a complex reaction mechanism.
Article
Materials Science, Ceramics
Bin Yu, Tiechui Yuan, Junjie Shi, Yuchao Qiu, Chenglong Jiang, Xiaoping Wu, Daihong Xiao, Ruidi Li, Han Jing, Mingfeng Ye
Summary: As the most widely used vanadium intermediate alloy, ferrovanadium is mainly prepared by the self-propagating high-temperature synthesis (SHS) process, with the advantages of short process and large heat release. However, there is a trade-off between the amount of reduction agent of Al and the product quality of ferrovanadium, which is caused by the thermodynamic equilibrium limitation of the reduction between Al and vanadium oxides. A new SHS-EAH process with multi-stage gradient aluminum addition coefficient pattern was implemented to improve yield and quality of ferrovanadium, reducing the vanadium content in slag and aluminum content in the alloy.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Kun Zhao, Xiaorui Huang, Yaowu Wang, Yuehong Zhang, Kejia Liu
Summary: A novel aluminothermic reduction combined with deoxidation process was developed to prepare low-oxygen Ti-6Al-4V alloy powder. The oxygen content in the crude Ti-6Al-4V alloy powder was detected and analyzed, and the deoxygenation process was carried out using calcium as a deoxidizer. The final Ti-6Al-4V powder met the required composition standards.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Jinzhao Guan, Kaiyu Xie, Aimin Liu, Zhongning Shi, Gong Chen, Miroslav Boca
Summary: In this study, Al-Si alloy was prepared via aluminothermic reduction-molten salt electrolysis of SiO2, using liquid aluminum as the working cathode. The Faradic current efficiency of the process was calculated as 28.4%, indicating that the Al-Si alloy was predominantly prepared in the aluminothermic reduction step, supplemented by electrolysis.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Wen Zhan, Xinxiang Li, Xuzhen Qian, Yingpeng Li, Yunhu Ding, Yunhe Zu, Fan Xie, Feng Tian
Summary: This paper aimed to develop synchronous chemical conversion coating with good corrosion resistance on multi-metal substrates. The results showed that the synchronous conversion coatings exhibited improved corrosion resistance and surface characteristics. The structure and composition of the coatings varied with different metal substrates.
Article
Materials Science, Multidisciplinary
Jin-ru Han, Zhi-he Dou, Ting-an Zhang, Wang An
Summary: This study investigates the reduction behavior and slagging effect of Cr2O3 during the in-situ synthesis of CuCr alloy. The results show that increasing the dosage of Cr2O3 improves the separation of alloy and slag, and affects the density and properties of the alloy.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Aleksandr Filatov, Andrey Suzdaltsev, Yurii Zaikov
Summary: A novel method for continuously obtaining Al-Zr master alloys from oxide raw materials was proposed and applied in grain refinement and improvement of aluminum alloy properties. The addition of zirconium to the alloy significantly refined the grain size, while a joint effect of alloying and rate cooling could achieve further grain size reduction.
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
(2021)
Article
Materials Science, Characterization & Testing
Tanju Teker, Serdar Osman Yilmaz, Alper Karakoca
Summary: A new AlCrFeSrTiBSi master alloy was synthesized in situ in an Al melt and compared with the AlBSr master alloy. The microstructures and structural details of A356 alloy modified with AlCrFeSrTiBSi master alloy were investigated using various techniques. The addition of 0.1 wt% AlCrFeSrTiBSi alloy significantly refined and modified the grain structure of the A356 alloy, leading to an increase in strength by approximately 70%.
Article
Materials Science, Multidisciplinary
Sen Du, Shengen Zhang, Jianwen Wang, Zhengfeng Lv, Zhiyuan Xu, Chen Liu, Jun Liu, Bo Liu
Summary: The conventional refining of aluminum scraps using nitrogen-fluxes often leads to the generation of aluminum nitride and residual fluxes, resulting in low purity of the recycled aluminum melt and difficulties in disposing of secondary aluminum dross. Our innovative research has achieved the recycling of aerospace-grade clean aluminum alloy melts, utilizing the argon bubble floating process to remove impurities and hydrogen, and achieving an ultra-clean melt. The argon refining dross can be recycled as a raw material for aluminum electrolysis, and the hydrogen content and the number of inclusions in the recycled aluminum melt can be reduced to the level of aerospace aluminum alloy melt, except for the inclusions with particle size >= 20 mm, which still remain a challenge.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Liyu Chen, Jiaxin Yang, Youjian Yang, Yifan Zhang, Zhaowen Wang
Summary: In this study, the thermodynamics, kinetics, and mechanism of the aluminothermic reduction of ZrO2 were investigated. The results provide important references for related studies in this field.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Metallurgy & Metallurgical Engineering
A. A. Filatov, A. V. Suzdal'tsev, Yu. P. Zaikov
Summary: The study discusses the application of an electrolytically produced master alloy in aluminum alloys, showing that adding zirconium can effectively refine grain size and increase hardness. The amount of zirconium added significantly impacts the structure and properties of the aluminum melt.
RUSSIAN METALLURGY
(2021)
Article
Chemistry, Applied
Ming Lin, Xianwei Hu, Zhongning Shi, Bingliang Gao, Jiangyu Yu, Zhaowen Wang
JOURNAL OF ENERGY CHEMISTRY
(2020)
Article
Materials Science, Multidisciplinary
Ming Lin, Xianwei Hu, Zhongning Shi, Bingliang Gao, Jiangyu Yu, Zhaowen Wang
Article
Chemistry, Physical
Aimin Liu, Zhongning Shi, Ramana G. Reddy
Article
Metallurgy & Metallurgical Engineering
Jin-zhao Guan, Ai-min Liu, Kai-yu Xie, Zhong-ning Shi, Blanka Kubikova
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2020)
Article
Electrochemistry
Wencai He, Zhongning Shi, Fengguo Liu, Shan Yang
Review
Chemistry, Applied
Fengguo Liu, Aimin Liu, Wenju Tao, Youjian Yang
PROGRESS IN ORGANIC COATINGS
(2020)
Article
Metallurgy & Metallurgical Engineering
Ai-min Liu, Meng-xia Guo, Zi-yang Lu, Bao-guo Zhang, Feng-guo Liu, Wen-ju Tao, You-jian Yang, Xian-wei Hu, Zhao-wen Wang, Yu-bao Liu, Zhong-ning Shi
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2020)
Article
Materials Science, Multidisciplinary
Fengguo Liu, Aimin Liu, Xianwei Hu, Zhaowen Wang, Zhongning Shi
Summary: The electrolysis of CO2 into carbon materials and oxygen gas in LiF-Li2O melts was successfully demonstrated in this study, with the morphology of the carbon material obtained on the cathode being dependent on the electrolysis potentials. The rate of CO2 and O2 production in the anode gas was found to be related to the reaction process, current density, and potentials.
Article
Materials Science, Multidisciplinary
Xiaozhou Cao, Lulu Xu, Chao Wang, Siyi Li, Dong Wu, Yuanyuan Shi, Fengguo Liu, Xiangxin Xue
Article
Metallurgy & Metallurgical Engineering
Ai-min Liu, Meng-xia Guo, Zhong-ning Shi, Yu-bao Liu, Feng-guo Liu, Xian-wei Hu, You-jian Yang, Wen-ju Tao, Zhao-wen Wang
Summary: In this study, zinc chloride was dissolved in the DMI solvent for electrodeposition of metallic zinc coatings in ambient air. The properties of the DMI-ZnCl2 solvated ionic liquid and the electrochemical behavior of Zn(II) were investigated, confirming the deposition of metallic zinc. The effects of deposition parameters on the morphology of the zinc coatings were also studied, showing that a dense and uniform coating can be achieved under specific conditions.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2021)
Article
Metallurgy & Metallurgical Engineering
Ai-min Liu, Yu Yao, Meng-xia Guo, Yu-bao Liu, Zhong-ning Shi, Feng-guo Liu, Xian-wei Hu, Wen-cai He, Zhao-wen Wang
Summary: The electrochemical mechanism and electrodeposition of neodymium from the DMI-LiNO3 solvated ionic liquid were investigated, showing that the electrochemical reduction is irreversible and proceeds via one-step with three-electron transfer. The electrodeposit obtained was confirmed to contain metallic neodymium.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2021)
Article
Electrochemistry
Aimin Liu, Mengxia Guo, Yubao Liu, Fengguo Liu, Xianwei Hu, Zhongning Shi
Summary: In this study, a Zn-Ta coating was electrodeposited from an ionic liquid, and its properties were investigated through electrochemical experiments and characterization techniques. The results showed that a compositionally rich Zn-Ta coating could be obtained by electrodeposition under specific potential and temperature conditions, and it exhibited a certain corrosion current density.
Article
Electrochemistry
Xin Zhang, Aimin Liu, Fengguo Liu, Zhongning Shi, Baoguo Zhang, Xu Wang
Summary: An aluminum-containing solvate ionic liquid was used as the electrolyte for magnesium electrodeposition, and coating of Al3Mg2 can be prepared by potentiostatic electrodeposition.
ELECTROCHEMISTRY COMMUNICATIONS
(2021)
Article
Metallurgy & Metallurgical Engineering
Wen-cai He, Feng-guo Liu, Xiong-wei Zhong, Shan Yang, Zhong-ning Shi
Summary: A new electrolyte, urea?1-ethyl-3methylimidazolium fluoride (urea?[EMIM]F), was synthesized to dissolve PbO for electrochemically extracting Pb at room temperature. The electrochemical behavior of Pb in this electrolyte was studied, revealing a quasireversible process for Pb reduction. With an increase in temperature, the onset potentials for Pb reduction shift anodically. Spherical Pb particles were obtained after electrodeposition in the urea?[EMIM]F system via potentiostatic electrolysis.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2021)
Review
Chemistry, Multidisciplinary
Fengguo Liu, Bo Wang, Lianyu Zhang, Aimin Liu, Zhaowen Wang, Zhongning Shi
PROGRESS IN CHEMISTRY
(2020)
