Article
Materials Science, Multidisciplinary
Guillaume Donadey, Simon Caillaud, Pierre Coeuret, Maria Moussa, Laurent Cuzacq, Jean-Louis Bobet
Summary: Hydrogen production through hydrolysis using Mg-based waste in simulated seawater was investigated. Different mechanical treatments, such as ball milling, cold rolling, cryo rolling, and cryo ball milling, were employed to study their effects on the hydrolysis yield. The results show that pretreatment with cryo rolling before ball milling achieved the highest yield of 90.5% in salted water within 10 minutes.
Article
Chemistry, Physical
Maria Rodriguez, Guillermina Urretavizcaya, Jean-Louis Bobet, Facundo J. Castro
Summary: This paper discusses the reprocessing of Mg scraps from sacrificial anodes manufacturing by mechanical milling for the production of H2 by hydrolysis. The effects of iron and graphite as additives to improve the hydrolysis reaction are presented. It has been found that pre-milling the scraps with 1.5 wt% of Fe for 10 hours followed by an extra milling with 5 wt% of graphite for 1 hour produces the best results. The addition of Fe accelerates the reaction rate by inducing microgalvanic coupling with Mg, while graphite acts as a process control agent during milling and contributes to size reduction of the material, resulting in faster H2 production.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Maria Rodriguez, Franco Niro, Guillermina Urretavizcaya, Jean-Louis Bobet, Facundo J. Castro
Summary: Magnesium-based wastes were reprocessed by mechanical milling and used to produce hydrogen through hydrolysis. The material evolved during reprocessing and hydrogen was generated in a MgCl2 solution at 24 degrees C. The particle size, crystallite size, microstrain, and phase abundance changed during mechanical processing. Hydrogen yields of 70-90% were obtained after 30 min of reaction, depending on milling time. The reaction kinetics improved with milling time, and the hydrolysis curves could be fitted with a model limited by a three-dimensional geometric contraction process. Mg17Al12 and Fe played a role in promoting hydrogen production during the reaction.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Review
Chemistry, Physical
Zipeng Liu, Jinling Zhong, Haiyan Leng, Guanglin Xia, Xuebin Yu
Summary: The hydrolysis of Mg-based alloys and their hydrides can produce hydrogen with high theoretical capacity, but the formation of passive magnesium hydroxides can interrupt the reaction, leading to low yield and sluggish reaction rates. Enhancement methods are needed to improve both yield and kinetics in the hydrolysis reactions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Lei Wang, Tong Su, Ning Wang, Yujun Chai
Summary: This study reveals the reaction mechanism of magnesium with water in different salt solutions and explores its potential application in fuel cells.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Lishuai Xie, Jiahao Ren, Yaqiu Qin, Xiaomin Wang, Fei Chen, Zhixin Ba
Summary: In this study, Mg-Nd binary and Mg-Nd-Ni ternary alloys with different Nd/Ni contents were successfully synthesized via near equilibrium solidification. It was found that the addition of Ni significantly enhanced the hydrolysis properties of Mg alloys, and ternary alloys with abundant eutectic microstructures showed superior performance. The results suggest that microstructure optimization is feasible to modify the hydrogen generation performance of Mg-based alloys.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Q. Gouty, F. J. Castro, G. Urretavizcaya, J. Sabatier, J. -l. Bobet
Summary: This study investigates the hydrolysis performance of Mg alloys scraps with the addition of different elements and compounds during ball milling. The results show that the hydrolysis curve can be divided into an incubation period and a logarithmic stage, and a new model is proposed to describe this process.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Energy & Fuels
Tingting Xu, Ning Wang, Yujun Chai
Summary: The rapid generation of hydrogen can be achieved by immersing Mg in a solution of Mn(Ac)(2), which forms an Mg/Mn galvanic cell that destroys the oxide film and induces a continuous reaction. The involvement of Mn in the generation of hydrogen is illustrated by its oxidation back to Mn2+.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Engineering, Biomedical
Yuqiuhan Zhang, Tycho Zimmermann, Wolf-Dieter Mueller, Frank Witte, Florian Beuer, Andreas Schwitalla
Summary: This study aims to describe the degradation process of magnesium and magnesium alloys through electrochemical measurements, assess its predictability, and investigate the effect of adding silver on the degradation process.
BIOACTIVE MATERIALS
(2022)
Article
Chemistry, Physical
M. Legree, V Charbonnier, S. Al Bacha, K. Asano, K. Sakaki, I Aubert, F. Mauvy, J-L Bobet
Summary: In this study, the hydrogen generation performance of LPSO compounds and LPSO + Mg alloys in simulated seawater solution was investigated. Results showed that LPSO compounds, especially the single phase LPSO Mg(87.6N)i(5.5)Y(6.9), exhibited improved H2 generation features compared to pure Mg. Alloys containing both Mg and LPSO benefited from galvanic coupling between the two phases, leading to higher reactivity and lower activation energies.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Green & Sustainable Science & Technology
S. Al Bacha, A. Thienpont, M. Zakhour, M. Nakhl, J. -L. Bobet
Summary: The study involved using ball-milled magnesium powder with the addition of graphite and nickel for hydrogen production through hydrolysis, resulting in rapid reaction speed and high purity. Lowering the pH of the hydrolysis solution reduces the activation energy of the reaction. Hydrolysis of magnesium-based materials is considered a clean hydrogen production technique under standard pressure and ambient temperature conditions.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Energy & Fuels
Qi Su, Ning Wang, Lei Wang, Yujun Chai
Summary: The study found that the formed precipitate drives the chemical reaction forward, while the Co or Ni catalyst accelerates hydrogen evolution. The catalytic capability of Co is better than that of Ni, but the change in Co morphology significantly affects its catalytic performance.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Nanoscience & Nanotechnology
Guozhu Zhang, Shuyang Qin, Longge Yan, Xinfang Zhang
Summary: Hydrogen energy is gaining prominence as a feasible technological approach for promoting global energy transformation. Electropulsing treatment has been found to improve the dehydrogenation kinetic performance of solid hydrogen storage materials by reducing the initial dehydrogenation temperature and increasing the dehydrogenation rate.
SCRIPTA MATERIALIA
(2021)
Article
Chemistry, Physical
Tomoharu Uchiyama, Daisuke Ando, Yuji Sutou
Summary: This study investigates the hydrogen generating characteristics of Mg-Ca alloys with Mg/Mg2Ca nanolamellar structures in the hydrolysis reaction with artificial seawater. The results show that the eutectic structure with several nanogalvanic cells of Mg/Mg2Ca in the alloys accelerates the hydrolysis reaction and leads to complete reaction with artificial seawater for hydrogen generation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Hongyun Qin, Haoyuan Li, Qiang Fu, Rujun Yu, Yang Zhao, Zhong Kang, Xia Chen, Ming Wang
Summary: This study investigates the hydrolysis performance of magnesium hydride (MgH2) in a self-made hydrolysis reactor. The results demonstrate that the hydrolysis reactor with a plate tower structure enables controllable continuous MgH2 hydrolysis, improving material distribution and liquid-solid mass transfer.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Metallurgy & Metallurgical Engineering
Shaoyang Shen, Liuzhang Ouyang, Jiangwen Liu, Hui Wang, Xu-Sheng Yang, Min Zhu
Summary: A one-step high-energy ball milling process is used to in situ form ultrafine Ni nanoparticles and combine them with expanded graphite to synthesize a MgH2Ni-EG nanocomposite. The nanocomposite exhibits excellent hydrogen storage performance at both high and room temperatures.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Materials Science, Multidisciplinary
Meiqin Zeng, Youtao Pan, Weifeng Liu, Jie Cui, Zhongchen Lu, Min Zhu
Summary: This study prepares nanocrystalline tungsten carbide powder using plasma milling and investigates the influence of plasma on the microstructure. The results show that plasma milling allows for a lower processing temperature and more complete carburization compared to conventional ball milling. It also generates more oxygen vacancies and defects on the surfaces of WO3 and C, resulting in increased reactivity.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Jiasi Luo, Wanting Sun, Dingshan Liang, K. C. Chan, Xu-Sheng Yang, Fuzeng Ren
Summary: Superior wear resistance can be achieved by in-situ formation of an amorphous-crystalline nanocomposite layer and gradient nanostructure during wear at elevated temperatures.
Article
Chemistry, Physical
Jingjing Wu, Bo Yuan, Yuyang Gu, Yifan Zhang, Zhongyuan Yan, Lida Zhang, Xusheng Yang, Haijiao Zhang, Ling Bai, Ziquan Li, Zhen-Dong Huang
Summary: A multifunctional BiOCl/amorphous antimony oxide (AAO) hetero-hybrid with the molar ratio of Bi3+/Sb3+ in 1/3 (1-BOC/3-AAO) is successfully developed by scalable ball-milling strategy. It exhibits exceptional visible light photocatalytic degradation performance of RhB and superior anodic potassium ion storage performance for potassium ion batteries. The hetero-hybrid possesses large specific surface area, narrow band gap, improved utilization of visible light, effectively suppressed recombination and highly enhanced transfer efficiency of the photogenerated charge carriers.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Materials Science, Multidisciplinary
Shaojie Lv, Hong-Hui Wu, Kaiyang Wang, Shuize Wang, Guilin Wu, Junheng Gao, Xu-Sheng Yang, Jiaming Zhu, Xinping Mao
Summary: The influences of cooling rates, prior austenite grain size, and impurity inclusion density on the microstructure evolution of austenite-acicular ferrite transformation in low alloy steels were quantitatively evaluated by multi-phase-field simulation. The numerical results demonstrate that reducing prior austenite grain size, increasing cooling rate, and increasing inclusion nucleation density can effectively refine acicular ferrite grain size. The findings contribute to better regulating and designing acicular ferrite in steels.
COMPUTATIONAL MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Wanting Sun, Jiasi Luo, Yim Ying Chan, J. H. Luan, Xu-Sheng Yang
Summary: In this study, a laser surface remelting technique was used to fabricate a heterogeneous gradient nanostructured layer on an austenitic Hadfield manganese steel. The layer exhibited a gradient refinement process and had a core-shell structure with ultra-strong mechanical properties due to the extra work hardening ability induced by the strength-ductility synergy in the gradient nanostructure.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Jiasi Luo, Wanting Sun, Dingshan Liang, Wenqing Yang, K. C. Chan, Fuzeng Ren, Xu-Sheng Yang
Summary: Heterogeneous crystalline-amorphous nanostructures exhibit superior strength-ductility synergy through the cooperative effects of nanograins and amorphous grain boundaries in co-deformation. In this study, a facile laser surface remelting technique was successfully developed to fabricate a 100 μm-thick gradient nanostructured layer with phase decomposition on a TiZrHfTaNb0.2 high-entropy alloy. A 5 μm-thick crystalline-amorphous nanostructured surface layer with an average grain size of 7 nm was obtained. This nanostructured layer demonstrated an ultrahigh yield strength of 6.0 GPa and a compression strain of 25% during localized micro-pillar compression tests. Co-deformation cooperative mechanisms observed included well-retained dislocation activities in nanograins and crystallization in amorphous grain boundaries, resulting in grain coarsening through grain boundary-mediated plasticity. This study provides insights into the development of high-performance high-entropy alloys with novel crystalline-amorphous nanostructures and their plastic deformation mechanisms.
MATERIALS & DESIGN
(2023)
Article
Nanoscience & Nanotechnology
Rongjian Shi, Yanlin Wang, Supeng Lu, Saiyu Liu, Yanqi Tu, Shani Yang, Kewei Gao, Xu-Sheng Yang, Xiaolu Pang
Summary: The high-strength spring steel demonstrates superior hydrogen embrittlement resistance and satisfactory work hardening capacity after hydrogen pre-charging with dispersed multiple precipitates via multi-microalloying of 1.04 wt% Cr and 0.14 wt% V. The multiple precipitates include isolated (Mn, Cr, V)-enriched cementite, isolated V-enriched VC, and co-precipitation of cementite and VC, which act as effective hydrogen traps and reduce HE susceptibility by 23%, making this strategy beneficial for designing high-strength and HE-resistant automotive steels.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
De-Xin Zhu, Kun-Ming Pan, Yuan Wu, Xiao-Ye Zhou, Xiang-Yue Li, Yong-Peng Ren, Sai-Ru Shi, Hua Yu, Shi-Zhong Wei, Hong-Hui Wu, Xu-Sheng Yang
Summary: In this study, the dominant factors influencing the bulk modulus of intermetallic compounds were identified as B-cal, dB(avg), and TIE. Surrogate machine learning models using these features achieved a 95% accuracy in predicting bulk modulus. Symbolic regression provided an expression for the relationship between bulk modulus and the screened features. These findings offer a new approach for optimizing and predicting the bulk moduli of intermetallic compounds.
Article
Metallurgy & Metallurgical Engineering
Rongjian Shi, Yanqi Tu, Liang Yang, Saiyu Liu, Shani Yang, Kewei Gao, Xu-Sheng Yang, Xiaolu Pang
Summary: This study explored the influence of pre-strain and microstructures on the hydrogen trapping behaviors in 1-GPa high-strength martensitic steel. The results showed that the trapped reversible and trapped irreversible hydrogen contents significantly increased after a pre-strain of 5%. The microstructural evolution revealed that the presence of concomitant dislocation cell-twin duplex microstructure and tangled dislocations contributed to the enhanced hydrogen trapping.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Yongyang Zhu, Shaoyang Shen, Xu-Sheng Yang, Liming Zeng, Gary Tsui, Zheng-Long Xu, Qing Zhou, Renheng Tang, K. C. Chan
Summary: This study proposes a cost-effective method to regenerate LiBH4 by ball milling hydrous lithium metaborate with low-cost Mg-based alloys. The introduction of light rare-earth metals into Mg improves the regeneration kinetics of LiBH4 by facilitating the breakage of B-O and conversion of H+ into H-. A yield of 40% can be achieved for LiBO2 center dot 2H(2)O-CeMg12 system with a relatively short ball milling duration of 10 hours. The optimized regeneration of LiBH4 is believed to be efficient and economical, utilizing an intrinsic hydrogen source in LiBO2 center dot 2H(2)O and cheap reducing agents. This finding is expected to promote the widespread use of LiBH4 for hydrogen storage.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Nanoscience & Nanotechnology
Yuqing Cai, Wenjing Liu, Fangfei Chang, Su Jin, Xusheng Yang, Chuanxiang Zhang, Ling Bai, Titus Masese, Ziquan Li, Zhen-Dong Huang
Summary: In this study, Ni, Fe, Mg, and Ti elements were introduced into Mn-based layered oxide to design a high-entropy compound HE-KMO, which demonstrated exceptional rate capability and cyclic stability.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Coatings & Films
Haoling Huo, Lin Cao, Jie Li, Huaijun Lin, Qiwei Wang, Xusheng Yang, Chuanjun Zang, Jingtao Zhang, Peng Zhang, Wei Li
Summary: In this study, modified coatings with PEEK and nanoparticles were utilized to enhance the strength and wear resistance. The addition of tantalum carbide nanoparticles showed the greatest improvement in mechanical behavior and wear resistance. The modified coatings have the potential to reduce stress on the titanium implant substrate and extend the lifespan of total knee replacement implants.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Yanyu Chen, Jie Li, Yingfei Yang, Junjie Yang, Huaijun Lin, Qiwei Wang, Xusheng Yang, Yuying Meng, Wei Li, Zhidan Lin, Peng Zhang
Summary: A novel porous polymer was prepared using the Pickering high internal phase emulsion (HIPE) template method for efficient oil-water separation from sewage. The addition of OTS-modified carbon nanotubes and surfactants improved the stability, mechanical properties, and separation efficiency of the polyHIPE. The 1%OTS-CNT polyHIPE exhibited high oil absorption capacity and maintained absorption efficiency even after multiple reapplications. Furthermore, the polymer showed superior antibacterial properties against E. coli and S. aureus.
Article
Engineering, Environmental
Yongyang Zhu, Xubo Li, Xu-Sheng Yang, Pengyun Chen, Gary Chi-Pong Tsui, Zheng-Long Xu, Renheng Tang, Fangming Xiao, Kangcheung Chan
Summary: Researchers have developed a low-cost BCC solid solution alloy with excellent activation performance and high effective hydrogen desorption capacity by using a new compositionally complex doping strategy. The synergistic effect of Nb, Fe, Co, Ni, and Mn elements has been confirmed to improve hydrogen storage performance.
CHEMICAL ENGINEERING JOURNAL
(2023)