Article
Nanoscience & Nanotechnology
J. Svoboda, K. Hackl, F. D. Fischer
Summary: It is confirmed in this study that the evolution of a non-equilibrium system corresponds to the constrained maximum of dissipation, while a system in a steady state minimizes dissipation. Additionally, the maximal dissipation generally decreases to its minimum value when the system approaches its steady state. Although these results agree with previous literature, the problem is still not fully clarified.
SCRIPTA MATERIALIA
(2023)
Article
Nanoscience & Nanotechnology
V. Kranthi Kumar, Shashwat Rathkanthiwar, Ankit Rao, Priyadarshini Ghosh, Sukanya Dhar, Hareesh Chandrasekar, Tanushree Choudhury, S. A. Shivashankar, Srinivasan Raghavan
Summary: A predictive approach to grain size control from 10 nm to 100 µm in chemical vapor deposited MoS2 monolayers is demonstrated. Physico-chemical modeling is used to correlate the variation in grain size to changes in supersaturation and kinetics on the growth surface. By intentionally adding reaction products to the source chemistry, nucleation density and final grain size are shown to be very sensitive to supersaturation in the initial stage of growth. This study shows that microstructural improvement can enhance field-effect electronic mobility from 0.1 to 17 cm²/V s.
ACS APPLIED NANO MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Christopher A. Hareland, Gildas Guillemot, Charles-Andre Gandin, Peter W. Voorhees
Summary: A unified thermodynamic description is proposed for moving non-equilibrium interfaces in solid-solid and solid-liquid transformations. The theory applies to concentrated multicomponent alloys with diffusion in both phases or only in the parent phase, and considers energy dissipation due to solute drag. The study reveals that solute drag affects both the velocity of the interface and the distribution coefficients for the compositions of the two phases at the interface.
Article
Chemistry, Physical
Giorgio Pia, Elisa Sogne, Andrea Falqui, Francesco Delogu
Summary: This study focuses on the mechanical behavior of nanoporous Au samples exposed to ozone and carbon dioxide alternately. The results show that repeated exposure to different gases induces progressive hardening of nanoporous Au, with a greater degree of hardening observed in samples with smaller ligament thickness.
Article
Materials Science, Multidisciplinary
Hamid Abdoli, Shahriar Bozorgmehri
Summary: The electrical and microstructural stability of a glass sealant sandwiched between two SS430 interconnects was studied under designed acceleration stress (AST) tests for 500 hours in air. Different stressors, including DC voltage, inverse voltage cycles, and temperature, were applied to the specimen. Morphological changes at the anodically/cathodically polarized interfaces were observed. The study found that stable resistivity and well-bonded interfaces were achieved at 0.7 V and 750°C, but higher voltages led to resistivity decay and accelerated interfacial corrosion and delamination at the anode side, as well as roughening and losing contacts due to Si accumulation at the cathode side. Cyclic polarization resulted in less degradation in resistivity and interfacial deterioration. Aging at higher temperature caused a slight decrease in resistivity.
Review
Materials Science, Multidisciplinary
Huai-Jun Lin, Yan-Shan Lu, Liu-Ting Zhang, Hai-Zhen Liu, Kaveh Edalati, Adam Revesz
Summary: In this review, recent advances in the study of metastable alloys for hydrogen storage applications are comprehensively reviewed. The synthesis methods and hydrogen storage properties of metastable alloys are summarized and discussed, highlighting their unique kinetics and thermodynamics properties. For example, Mg-based amorphous and nanoglass alloys exhibit superior hydrogenation kinetics and higher hydrogen storage capacity, while the immiscible Mg-Mn and Mg-Zr alloys show destabilized thermodynamics properties.
Article
Environmental Sciences
R. Gayathri, K. P. Gopinath, P. Senthil Kumar
Summary: In this study, ultrasonic assisted jujube seeds (UAJS) treated with sulphuric acid were experimented as adsorbents for removing Zn(II) and Pb(II) contaminated water. Results show that UAJS has higher adsorption capacity and is effective in treating industrial wastewater containing metal ions.
Article
Materials Science, Multidisciplinary
Marek Zajusz, Monika Jawanska, Juliusz Dabrowa, Katarzyna Berent, Grzegorz Cieslak, Tadeusz Kulik, Krzysztof Mroczka
Summary: The diffusion kinetics of BCC-structured high-entropy alloys (HEAs) are experimentally studied, revealing fast diffusion kinetics and supporting the absence of sluggish diffusion effect in HEAs.
MATERIALS RESEARCH LETTERS
(2022)
Article
Water Resources
Jonas Bayuo
Summary: Utilizing unmodified Shea fruit shells as a biosorbent for Cd(II) removal from synthetic wastewater was found to be dependent on parameters such as pH, contact time, temperature, and initial concentration. The adsorption process was best represented by the Freundlich isotherm and was determined to be chemisorption. Thermodynamic analysis revealed that the process was endothermic and spontaneous.
APPLIED WATER SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Xiangji Zhou, Lihua Qian, Tianshui Yu, Hengbo Xiao, Lin Liu, Yao Yu, Pengxiang Lei
Summary: In this study, it is found that the volume diffusion of Bi atoms in nanoporous AgBi can be driven by electrochemical potential at room temperature, leading to the conformal covering of an amorphous Bi2O3 shell. The growth kinetics of the amorphous shell show that the potential dependence of Bi volume diffusion activation energy is 0.932 eV V-1. Compared with temperature dependence, potential supply is more feasible to modulate volume diffusion rate and shell thickness.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Yue Li, Zhijun Wang, Xianghan Gao, Yujian Wang, Junjie Li, Jincheng Wang
Summary: The kinetics of transient coarsening co-controlled by interface and matrix diffusion is studied in a new framework developed in the Lifshitz-Slyozov-Wagner space. The time for transient coarsening is found to change non-monotonically with the width and tail length of the initial distribution. A unique attractor state for the steady stage is identified, and the numerical origin of 'quasi-steady' distributions is revealed. The increase in volume fraction shortens the transient stage dominated by single mechanism but delays the transition to the diffusion-controlled stage.
Article
Materials Science, Multidisciplinary
Jiwei Yao, Hui Yong, Yang Zhao, Chengyan Sun, Xianliu Xu, Baosheng Liu, Dongliang Zhao, Jifan Hu, Yanghuan Zhang
Summary: The Mg90Ce5Y5 + x wt% ZnF2 (x = 3, 6, 10, 15) composites were prepared by mechanical ball-milling, and their effects on the hydrogen absorption and desorption properties of Mg90Ce5Y5 alloy were investigated. The addition of ZnF2 introduced MgF2 and MgZn2 phases, which acted as catalysts and improved the hydriding-dehydriding characteristics. Mg90Ce5Y5 + 6 wt% ZnF2 composites exhibited the fastest hydrogen adsorption/desorption kinetics and lower decomposition temperatures.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Linmei Yang, Shiran Ma, Guowan Mu
Summary: The addition of Mo nanoparticles in Sn3.0Ag0.5Cu and Sn58Bi alloys led to the preparation of two kinds of composite lead-free solders with refined microstructures and significantly enhanced hardness. The mechanism of these effects on the microstructure and hardness was analyzed.
Article
Materials Science, Ceramics
Pengfei Li, Xiwei Qi, Li-Min Wang
Summary: The study found that for PbTe-based alloys, a combination of thermodynamics and kinetics is crucial in understanding the glass formation process, with low entropy of fusion and deep eutectic fashion being key factors in determining glass forming ability.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Materials Science, Multidisciplinary
Xiaohu Chen, Feng Ding, Pingze Zhang, Dongbo Wei, Fengkun Li, Zhongkai Qiu, Zhangzhong Wang, Xiurong Zhu, Guoping Ling
Summary: This study investigates the oxidation performance of a gradient MCrAlY bond coating on titanium alloys prepared using the double glow plasma surface alloying process (DGP). The results demonstrate the potential of this technology in coating synthesis and application, as well as the enhancement of oxidation resistance of titanium alloys by the coating.
MATERIALS AT HIGH TEMPERATURES
(2021)
Article
Materials Science, Multidisciplinary
Haoping Peng, Zehuan Lin, Ruidi Li, Pengda Niu, Zhijian Zhang
FRONTIERS IN MATERIALS
(2020)
Article
Chemistry, Physical
Rong Xu, Ruidi Li, Tiechui Yuan, Pengda Niu, Minbo Wang, Zehuan Lin
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Metallurgy & Metallurgical Engineering
Fangsheng Mei, Tiechui Yuan, Ruidi Li, Jingwei Huang
Summary: This study compared the effect of tin-doped indium oxide and In2O3-SnO2 mixed powders on the microstructure and properties of ITO targets and thin films. The results showed differences in density, grain size, and optical properties between the two types of ITO targets, highlighting the importance of raw powder selection in preparing high-quality ITO targets.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Pengda Niu, Ruidi Li, Kefu Gan, Tiechui Yuan, Siyao Xie, Chao Chen
Summary: Additive manufacturing of equimolar CoCrNi medium entropy alloy through selective laser melting showed improved mechanical properties compared to traditional manufacturing methods, with some challenges related to density, grain size, and residual stress that need further optimization.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2021)
Article
Chemistry, Physical
Ping Li, Ruidi Li, Haiou Yang, Tiechui Yuan, Pengda Niu, Minbo Wang, Lanbo Li, Chao Chen
Summary: Selective laser melting (SLM) of Al-3.48Cu-2.03Si-0.48Sc-0.28Zr alloy was systematically investigated in this work, showcasing a strong correlation between specimen density and laser parameters, along with the influence of laser energy input on pore formation and initiation of microcracks. The microstructure of the printed specimen exhibited grain refinement and lattice distortion, leading to increased tensile strength and elongation. This study provides valuable insights for designing high strength-ductility aluminum alloys for SLM.
Article
Chemistry, Physical
Haoping Peng, Siyao Xie, Pengda Niu, Zhijian Zhang, Tiechui Yuan, Zhiqiang Ren, Xiaoming Wang, Yang Zhao, Ruidi Li
Summary: Al0.3CoCrFeNi high-entropy alloy was additively manufactured by laser melting deposition, and its microstructure and tensile properties were studied. Thermal stress induced dislocation loops and cracks, leading to poor ductility in the samples, while annealing facilitated further precipitation of phases introducing hardening effects.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Zhijian Zhang, Tiechui Yuan, Ruidi Li
Summary: The corrosion behavior of the SLM MEA and cast MEA was compared, revealing that the SLM MEA has inferior corrosion resistance due to metallurgical defects and smaller grain size. Specifically, the XY-plane of the SLM MEA showed poorer corrosion resistance than the XZ-plane, attributed to metallurgical defects, lack of fusion pores, and higher grain boundary density.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Nanoscience & Nanotechnology
Pengda Niu, Ruidi Li, Zhiqi Fan, Tiechui Yuan, Zhijiang Zhang
Summary: The metastable dual-phase Fe50Mn30Co10Cr10 high entropy alloy was prepared successfully using the laser melting deposition (LMD) technique. The as-printed samples showed anisotropic mechanical properties, with deformation bands observed in the FCC matrix after deformation. The formation of stacking faults and increase of dislocations were significantly influenced by sliding of Shockeley partial dislocations, contributing to the nucleation of HCP martensite.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Metallurgy & Metallurgical Engineering
Zheng Dan, Li Rui-di, Yuan Tie-chui, Xiong Yi, Song Bo, Wang Jia-xing, Su Ya-dong
Summary: The study compared NiTi shape memory alloy manufactured by selective laser melting and laser directed energy deposition methods, revealing significant differences in mechanical properties and phase behavior between SLM and DED samples. SLM samples exhibited better ductility and shape memory effect, while DED samples showed higher yield strength and lower elongation.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2021)
Article
Metallurgy & Metallurgical Engineering
Wang Yin, Wang Yue-ting, Li Rui-di, Niu Peng-da, Wang Min-bo, Yuan Tie-chui, Li Kun
Summary: Materials prepared by additive manufacturing technology exhibit improved mechanical properties due to grain refinement and the presence of cellular structures, with grain size rather than cell size being a more accurate predictor of strength.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2021)
Article
Chemistry, Physical
Hong Wu, Yaojia Ren, Junye Ren, Luxin Liang, Ruidi Li, Qihong Fang, Anhui Cai, Quan Shan, Yingtao Tian, Ian Baker
Summary: The effect of volumetric energy density (VED) on the fabrication of AlSi10Mg alloy by selective laser melting (SLM) was investigated, revealing different melting modes and resulting in varied microstructural evolution and mechanical properties. Higher VED led to the formation of keyhole defects and two types of molten pools, affecting the grain size, Si network, and mechanical properties of the SLM parts differently.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Qian Hua, Ruidi Li, Minbo Wang, Hongbin Zhu, Xinyan Liu, Duan Lai, Jinfeng Li, Tiechui Yuan
Summary: Laser powder bed fusion (LPBF) of high-strength Al-Mg-Sc-Zr alloy has potential application in aerospace industry. The study investigates the high cycle fatigue property of LPBF-fabricated Al-Mg-Sc-Zr alloy and its correlation with defects, microstructure, and precipitated phases. Aging treatment results in the precipitation of nanosized Al3Sc intragranular particles and Mn-rich intergranular particles, which inhibit dislocation movement and improve fatigue strength. The ultimate tensile strength after aging treatment is 507.05 MPa, with a corresponding 10^7 cycle fatigue strength (R = -1) of 106 MPa. Fatigue crack initiation occurs at surface defects, especially lack of fusion, and propagates through the remaining part.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Engineering, Manufacturing
Pengda Niu, Ruidi Li, Zhiqi Fan, Peng Cao, Dan Zheng, Minbo Wang, Cao Deng, Tiechui Yuan
Summary: Hot cracking is a problem in laser powder bed fused AlxCoCrFeNi high entropy alloys. The researchers propose a strategy to transform the BCC phase to FCC phase to inhibit cracking. They found that Al0.5CoCrFeNi alloy with a single FCC crystal structure has low cracking sensitivity and good intergranular plastic compatibility. Precipitation heat treatment can further enhance the mechanical properties of the LPBF printed Al0.5CoCrFeNi alloy.
ADDITIVE MANUFACTURING
(2023)
Article
Metallurgy & Metallurgical Engineering
Zhi-hui Zhou, Mei Zhang, Tie-chui Yuan, Yun-bao Xu, Rui-di Li
Summary: Understanding and controlling the influence of impurity elements on the quality of boron carbide is of great importance. In this study, it was found through hot pressing sintering experiments that impurity elements can result in the formation of aggregation pores and abnormal grain growth, significantly reducing the toughness of boron carbide samples.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2023)
Article
Engineering, Manufacturing
Jingtao Kang, Ruidi Li, Dan Zheng, Huiting Wu, Minbo Wang, Pengda Niu, Jian Li, Xinyan Liu, Duan Lai, Tiechui Yuan
Summary: In this study, we investigate the precipitation and martensitic transformation behavior of Ni-rich NiTi alloys fabricated via laser-directed energy deposition (LDED). The unique behavior observed in these alloys is attributed to the metastable microstructures and high residual stresses induced by the LDED technique. The precipitation of Ni4Ti3 particles is found to be uniform under all ageing conditions, and no traditional multiple-step martensitic transformations are observed.
VIRTUAL AND PHYSICAL PROTOTYPING
(2023)
Article
Materials Science, Multidisciplinary
Deyong Zheng, Huihui Jin, Yucong Liao, Pengxia Ji
Summary: In this study, a highly stable and efficient catalyst, fluorine-doped Co3O4 (F-Co3O4), was developed for hydrogen production by water electrolysis. The F-Co3O4 catalyst exhibited a remarkable reduction in overpotential and demonstrated excellent stability for over 100 hours.
Article
Materials Science, Multidisciplinary
Ziwen Lv, Jintao Wang, Fengyi Wang, Jianqiang Wang, Fuquan Li, Hongtao Chen
Summary: Adding Cu6Sn5 nano particles can effectively inhibit the overgrowth of intermetallic compounds at the interfaces of solder joints in electronic devices, providing a solution to this issue. A new growth mechanism of intermetallic compounds at the interfaces was identified.
Article
Materials Science, Multidisciplinary
Jun Wang, Jiawei Chen, Wanru Liao, Fangyang Liu, Min Liu, Liangxing Jiang
Summary: A BiOI/AgI/Ag plasmonic heterostructure photocathode was successfully designed through electrodeposition, ion-exchange, and illumination methods. This photocathode exhibits superior performance in photoelectrochemical water splitting.
Article
Materials Science, Multidisciplinary
Xiaoxiao Liu, Xianxian Zhou, Xiaotao Ma, Qinbo Yuan, Shibin Liu
Summary: In this study, the authors propose a method to accelerate the reaction of polysulfides in lithium-sulfur batteries using a Ni@OC Mott-Schottky heterojunction as a catalyst. The experimental results demonstrate that the charge redistribution at the Ni@OC interface accelerates electron transfer and enhances catalytic activity, leading to improved reaction kinetics and battery performance.
Article
Materials Science, Multidisciplinary
Dayou Ma, Mohammad Rezasefat, Joziel Aparecido da Cruz, Sandro Campos Amico, Marco Giglio, Andrea Manes
Summary: The matrix has a significant effect on the impact resistance of composite materials. Replacing a brittle polymer with a more flexible one can improve impact resistance, but it poses challenges to standard testing methods. This study designs a new fixture for testing the low-velocity impact of soft composites and investigates the effect of the fixture on the mechanical performance.
Article
Materials Science, Multidisciplinary
Lingchang Wang, Qihang Yang, Huzhen Li, Ming Wei, Qian Wang, Zhenzhong Hu, Mengmeng Zhen
Summary: Bronze titanium dioxide (TiO2(B)) is a promising anode material for lithium-ion batteries due to its high specific capacity. However, its practical applications are hindered by poor conductivity and limited electrochemical kinetics. In this study, TiO2(B)-carbon nanosheets heterostructures are synthesized to enhance the cycling performance and rate capability of TiO2(B).
Article
Materials Science, Multidisciplinary
Atul Thakur, Ritesh Verma, Ankush Chauhan, Fayu Wan, Preeti Thakur
Summary: In this study, BaFe12O19 and BaFe12O19: Epoxy (50:50) nanocomposites were synthesized using the co-precipitation method. The structural information and material properties, such as crystallite size and electrical conductivity, were characterized by XRD, FESEM, EDX, and TEM techniques.
Article
Materials Science, Multidisciplinary
Jingyu Wu, Xinyan Ma, Yong Yang
Summary: A well-defined CoS2@NC(CS-500) hierarchical binder-free catalyst cathode is constructed through in-situ grown of ZIF-67 on carbon cloth and high-temperature carbonization. The cathode shows excellent reaction kinetics and electrochemical performance, providing inspiration for developing advanced Li-CO2 battery catalysts.
Article
Materials Science, Multidisciplinary
Svetlana M. Posokhova, Vladimir A. Morozov, Kirill N. Boldyrev, Dina Deyneko, Erzhena T. Pavlova, Bogdan I. Lazoryak
Summary: This study explores the impact of synthesis method and composition on the structure and luminescence properties of K5Eu1-xHox(MoO4)4 with the palmierite-type matrix. The co-doping of Eu3+ and Ho3+ ions plays a critical role in manipulating charge transfer and luminescence efficiency in the visible and infrared regions.
Article
Materials Science, Multidisciplinary
Jian Wang, Yeting Tao, Jingsheng Wang, Youtian Tao
Summary: A new electron-transport material iTPyBI-CN is developed through non-catalytic C-N coupling reaction. It exhibits better electroluminescence efficiency in organic light-emitting diodes compared to the commercial material TPBI, due to its twisted geometry and higher energy levels.
Article
Materials Science, Multidisciplinary
Tao Zhu, Feng Huang, Shuo Li, Yang Zhou
Summary: This article combines XRD analysis and microscopic structural observation to investigate the changes in limestone after high-temperature treatment. It finds that 500 degrees C is the critical temperature for crystalline and spatial arrangement changes in limestone, and the thermal conductivity, specific heat capacity, and heat storage coefficient gradually decrease after thermal treatment.
Article
Materials Science, Multidisciplinary
Muhammad Haekal Habibie, Fransiska Sri Herwahyu Krismastuti, Abdi Wira Septama, Faiza Maryani, Vivi Fauzia
Summary: This study focuses on the synthesis of zinc oxide nanostructure from zinc recovered from galvanization ash and highlights its potential as a sustainable source of zinc and as an antibacterial agent.
Article
Materials Science, Multidisciplinary
Jingyi Li, Yixin Xing, Wei Gu, Shousi Lu
Summary: In this study, PC@CaP microparticles were fabricated using biomimetic mineralization. The results showed that under environmental stress, PC@CaP exhibited improved stability and antioxidative activity, indicating its potential use in high-added value fields.
Article
Materials Science, Multidisciplinary
Yan Liu, Shunyou Chen
Summary: In this study, TNTs were used as a drug carrier and modified with ZIF-8 and silk fibroin to obtain a new drug loading platform. The results showed that this drug-loaded platform had a good drug release effect in vitro and could promote cell proliferation and osteogenic differentiation.
Article
Materials Science, Multidisciplinary
Chunhui Zhu, Wentao Wang, Qing Zhen, Xinning Huang, Shixin Li, Shaochang Wang, Xiaoping Ma, Xiaoxia Liu, Yalong Jiao, Kai Sun, Zhuangzhi Li, Huaixin Yang, Jianqi Li
Summary: A type of stacking fault is revealed in e-InSe crystal, which is associated with a small stacking-fault energy and shows exceptional plasticity.
