Article
Metallurgy & Metallurgical Engineering
Anna Dobkowska, Boguslawa Adamczyk-Cieslak, Jiri Kubasek, Dalibor Vojtech, Dariusz Kuc, Eugeniusz Hadasik, Jaroslaw Mizera
Summary: The study found that the relative composition of Mg-7.5Li-3Al-1Zn alloy changed after extrusion and post-processing annealing, with an increase in beta(Li) content leading to improved corrosion resistance.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Chemistry, Physical
Zhong Ming Brendan Teo, Gururaj Parande, Vyasaraj Manakari, Manoj Gupta
Summary: The study demonstrated that by controlling temperature, magnesium alloys and nanocomposites with high zinc content can be fabricated, reducing the formation of secondary phases and improving physical and mechanical properties. The addition of SiO2 nanoparticles enhanced thermal stability and damping response, while the compressive yield strength, ultimate compressive strength, and fracture strain were similar for both the alloy and nanocomposite.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Yuehua Sun, Fan Zhang, Richu Wang, Chaoqun Peng, Jian Ren, Guangsheng Song
Summary: The microstructure and corrosion behavior of Mg-8Li-3Al-2Zn(- 1.0Gd) alloys were studied. Galvanic corrosion occurs at the & alpha;-Mg/& beta;-Li phase interface in the homogenized LAZ832(-1.0Gd) alloys, while pitting corrosion occurs in the & alpha;-Mg matrix and & beta;-Li matrix. After hot extrusion, the corrosion form of the & alpha;-Mg matrix changes to intergranular corrosion. The corrosion resistance of LAZ832 alloy is effectively improved by combining Gd alloying and hot extrusion, with the as-extruded LAZ832-1.0Gd alloy showing the best corrosion resistance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Weili Cheng, Yanhui Liu, Yao Zhang, Shuaiju Meng, Srinivasan Arthanari, Hong-xia Wang, Lifei Wang
Summary: The novel dilute Mg-0.5Sn-0.7Al-0.8Zn alloy, directly extruded after casting, exhibited a fine bimodal grained microstructure, local nano-precipitates micro-region, and typical extrusion direction (ED)-tilted texture. It achieved a great balance between tensile properties and corrosion resistance, suggesting its potential for development as a biomaterial.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Metallurgy & Metallurgical Engineering
Yang Liu, Wei-li Cheng, Xiong-jie Gu, Yan-hui Liu, Ze-qin Cui, Li-fei Wang, Hong-xia Wang
Summary: The addition of 0.5 wt% Mn microalloy significantly enhances the corrosion resistance of Mg-0.5Bi-0.5Sn alloy, reducing grain size and dislocation density, while also observing new second phase and grain boundary segregation in certain micro-regions.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Materials Science, Multidisciplinary
Yihao Bao, Liang Chen, Jianwei Tang, Zhigang Li, Guoqun Zhao, Cunsheng Zhang
Summary: In this study, a Mg alloy with alloying elements of Zn, Al, Sn, and Mn was designed, and hot extrusion was carried out at various speeds and temperatures. It was found that high speed extrusion resulted in more second phase particles, while high extrusion temperature increased the number of second phases, grain size, and dynamic recrystallization degree. The sample extruded at a speed of 10 mm/min and temperature of 300 degrees C showed the highest yield strength, tensile strength, and corrosion resistance.
MATERIALS CHARACTERIZATION
(2021)
Article
Materials Science, Multidisciplinary
T. Nakata, C. Xu, H. Yamato, L. Geng, S. Kamado
Summary: The addition of Al and Ca microelements can improve the mechanical properties of magnesium alloys, but Al addition can deteriorate corrosion resistance, while the single addition of Ca can help increase both tensile and compressive yield strengths and improve yield anisotropy. This property improvement was achieved without compromising corrosion resistance. A ViscoPlastic Self-Consistent simulation showed that the single Ca addition effectively enhanced the hardening of basal and prismatic slips, resulting in improved yield strength in both tension and compression.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Multidisciplinary
Suhail Ahmed Manroo, Noor Zaman Khan, Babar Ahmad
Summary: Friction stir processing was used to fabricate surface metal matrix composites using ZE41-rare earth magnesium alloy and nano-particles as reinforcement. The results showed that the process could refine the grains, increase microhardness and tensile strength, and improve wear resistance of the composites.
Article
Chemistry, Physical
Davoud Bovand, Hassan Abdollah-Pour, Omid Mirzaee, Sara Bagherifard
Summary: The aim of this study is to investigate the impact of Ti on the corrosion and wear properties of Mg-5Sn-xTi (x = 0, 0.15, 0.75, 1.5 wt.%) alloys. The results showed that the wear rate decreased with an increase in Ti content, while the coefficient of friction increased with higher Ti contents. The sample with 0.75 wt.% Ti exhibited superior wear properties at lower normal forces, while the sample with 0.15 wt.% Ti showed better wear resistance at higher forces. Additionally, Ti deteriorated the corrosion features of the Mg-5Sn alloy.
Article
Chemistry, Physical
Neeraj Kumar, Ashutosh Sharma, Manoranjan Kumar Manoj
Summary: This study investigates the corrosion behavior of boron carbide reinforced Al-Mg-Si matrix composites in different aqueous environments. The results show that the composites exhibit the highest corrosion resistance in NaCl medium, and a protective barrier layer is formed.
Article
Materials Science, Multidisciplinary
Yuan Gong, Junguang He, Jiuba Wen, Wuyun Feng, Xiangyang Zheng, Huan Li
Summary: This study investigates the microstructure evolution and properties of as-cast Mg-2.0Sn-1.0Zn-1.0Y-0.3Zr magnesium alloys under different extrusion ratios (lambda = 6, 8, 10, and 12) using various techniques. The results show that the alloy consists of Mg14SnY and Mg6SnY precipitated phases before and after extrusion. Hot extrusion leads to the breaking of the second phase into particles and a significant reduction in grain size, along with the presence of dynamic recrystallization and deformed grains in the microstructure. The mechanical properties of the extruded alloy improve, but its corrosion resistance weakens. The alloy extruded with a ratio of lambda = 10 exhibits relatively good mechanical properties and corrosion resistance. The corrosion behaviors of the extruded alloys are influenced by grain size and galvanic corrosion.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Yuzhao Xu, Jingyuan Li, Mingfan Qi, Wenhui Guo, Yue Deng
Summary: This study investigated the influence of extrusion temperature on the microstructure, mechanical properties, and corrosion behavior of ZGMS alloy. The results showed that lower extrusion temperature led to refined grain size and improved mechanical properties. The alloy exhibited excellent mechanical properties and low corrosion rate after extrusion at 360 degrees Celsius.
MATERIALS CHARACTERIZATION
(2022)
Article
Metallurgy & Metallurgical Engineering
Feng Li, Wei-li Cheng, Hui Yu, Hong-xia Wang, Xiao-feng Niu, Li-fei Wang, Hang LI, Hua Hou
Summary: A novel low-alloyed Mg-Bi-Y-Zn alloy system was successfully developed and extruded at 673 K. The corrosion behavior and tensile properties of the extruded alloy were investigated, showing a nearly fully recrystallized grain structure with scattered extrusion fiber texture and sub-micron precipitates. The alloy exhibited a change in corrosion mode from galvanic induced pitting corrosion to filiform-like corrosion and mixed pitting corrosion during long-term corrosion processes. The tensile properties and corrosion resistance of the Mg-0.5Bi-0.5Y-0.2Zn (wt.%) alloy were determined, indicating its promising potential in biomedical applications due to the balanced combination of tensile strength and corrosion resistance.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2023)
Article
Materials Science, Multidisciplinary
G. Keerthiga, Dandapani Vijayshankar, M. J. N. Prasad, Mirco Peron, Jafar Albinmousa, R. K. Singh Raman
Summary: The electrochemical corrosion resistance of Mg-Zn-Zr alloy ZK60 was studied in different directions, and it was found that the corrosion resistance is superior in the plane transverse to the extrusion direction. This difference is attributed to the variations in microstructural features in different directions.
Article
Multidisciplinary Sciences
Gnanasambandam Anbuchezhiyan, Nabisab Mujawar Mubarak, Rama Rao Karri, Mohammad Khalid
Summary: This study synthesized Mg-Al-Zn alloy and Mg-Al-Zn/BN/B4C hybrid composite, and evaluated their properties. The results showed that the hybrid composite samples reinforced with 9 wt% B4C outperformed the control specimen in terms of strength and hardness, and reduced the corrosion area.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Multidisciplinary
Motilal Mathesh, Elisha Bhattarai, Wenrong Yang
Summary: This article introduces an enzyme-powered 2D nanobot that achieves active motion at low fuel concentrations and demonstrates excellent chemical behavior and dye removal capabilities.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Materials Science, Multidisciplinary
Diulia Quites, Jose Ramon Leiza, Daniele Mantione, Anthony Somers, Maria Forsyth, Maria Paulis
Summary: This study optimized the incorporation of organic corrosion inhibitors into waterborne coatings and successfully incorporated p-coumaric acid into polymeric binders. The anticorrosion performance of the coatings was tested and compared using electrochemical analysis.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2022)
Article
Chemistry, Physical
Faezeh Makhlooghiazad, Luke A. O'Dell, Luca Porcarelli, Craig Forsyth, Nurul Quazi, Mousa Asadi, Oliver Hutt, David Mecerreyes, Maria Forsyth, Jennifer M. Pringle
Summary: Zwitterionic materials offer unique characteristics which can be highly tunable by variation to the covalently bound cationic and anionic moieties. With molecular disorder and plasticity, they can be used as solid-state conductive matrices, showing promising potential for electrolyte applications.
Article
Chemistry, Physical
Xiaoen Wang, Cheng Zhang, Michal Sawczyk, Qinghong Yuan, Fangfang Chen, Tiago C. Mendes, Patrick C. Howlett, Changkui Fu, Petr Kral, Craig J. Hawker, Andrew Whittaker, Maria Forsyth, Ju Sun, Yiqing Wang, Xiao Tan, Debra J. Searles
Summary: This study developed solvent-free solid polymer electrolytes for safe and stable all-solid-state sodium metal batteries, demonstrating excellent cycling performance and charge/discharge stability. Sodium metal batteries show promising application prospects in energy storage systems.
Article
Electrochemistry
Ju Sun, Dmitrii Rakov, Jinfeng Wang, Yvonne Hora, Milad Laghaei, Nolene Byrne, Xungai Wang, Patrick C. Howlett, Maria Forsyth
Summary: Battery sustainability is often overlooked in battery technology, but the use of harmful materials in standard electrodes has a negative impact on the environment. By utilizing carbonized silk from waste biomass, a sustainable battery anode can be created that avoids the use of harmful materials and has the potential for high energy density batteries.
Article
Chemistry, Physical
Ju Sun, Isuru E. Gunathilaka, Luke A. O'Dell, Patrick C. Howlett, Maria Forsyth
Summary: The relationship between formation procedure and interfacial characteristics of electrodes in sodium-ion batteries is crucial for cell performance. We successfully shortened the formation time and improved the cycling performance of the sodium-ion half cell through optimized formation protocols in superconcentrated ionic liquid electrolytes. Our findings show that high C-rate formation contributes to a highly conductive and thinner solid-electrolyte interphase (SEI) layer, facilitating Na+ diffusion kinetics. This work provides a cost-effective and time efficient formation protocol for NIBs.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Maria Martinez-Ibanez, Nicola Boaretto, Alexander Santiago, Leire Meabe, Xiaoen Wang, Oihane Zugazua, Inigo Raposo, Maria Forsyth, Michel Armand, Heng Zhang
Summary: This paper reports a highly-concentrated FSI-based ternary gel polymer electrolyte (TGPE) with high lithium-ion conductivities, wide electrochemical stability, and superior compatibility with lithium metal electrode. The TGPE enables stable Li plating and stripping processes, as well as high discharge capacity of a Li||Li(Ni0.6Mn0.2Co0.2)O2 cell at ambient temperatures. This study not only provides safe and highly conductive polymer electrolytes but also enhances our understanding of the role of FSI anions in high-energy lithium metal batteries.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Gregorio Guzman-Gonzalez, Marta Alvarez-Tirado, Jorge L. Olmedo-Martinez, Matias L. Picchio, Nerea Casado, Maria Forsyth, David Mecerreyes
Summary: This article demonstrates the use of single-component electrolytes in lithium batteries based on new lithium borate ionic liquids at room temperature. The optimized lithium ionic liquids (LiILs) show high ionic conductivity, lithium transference numbers, and electrochemical stability. These LiILs also exhibit high compatibility with lithium-metal electrodes, resulting in excellent electrochemical performance in lithium-metal battery cells.
ADVANCED ENERGY MATERIALS
(2023)
Article
Energy & Fuels
Karolina Biernacka, Ju Sun, Faezeh Makhlooghiazad, Ali Balkis, Isuru E. Gunathilaka, Luke A. O'Dell, Montserrat Galceran Mestres, Patrick C. Howlett, Jennifer M. Pringle, Maria Forsyth
Summary: In this study, a promising electrolyte based on hexamethylguanidinium bis(fluorosulfonyl)imide [FSI] at a sodium concentration of 25 mol% NaFSI is presented for sodium batteries. The electrolyte exhibits good physicochemical properties, supporting stable sodium plating and stripping as well as high sodium-ion transference number. The electrolyte also shows excellent cycling performance with hard carbon anode and NaFePO4 cathode.
JOURNAL OF PHYSICS-ENERGY
(2023)
Article
Chemistry, Physical
Mojtaba Eftekharnia, Robert Kerr, Maria Forsyth, Patrick C. Howlett
Summary: In order to utilize the advantages of high energy density lithium-metal batteries, their cycle life and safety need to be improved. External compression has been shown to enhance the performance of these batteries by reducing dendrite growth and improving lithium deposition morphology. This study investigates the behavior of high-capacity Li||LFP pouch cells in pyrrolidinium-based ionic liquid electrolytes under different levels of compression and discusses the mechanisms that affect the cell performance and failure. The results indicate that higher compression leads to more uniform and less dendritic lithium deposition.
JOURNAL OF POWER SOURCES
(2023)
Article
Biochemistry & Molecular Biology
Sharon Monaci, Daniela Minudri, Lorenzo Guazzelli, Andrea Mezzetta, David Mecerreyes, Maria Forsyth, Anthony Somers
Summary: Corrosion is a major problem that affects structures and buildings, leading to premature failure and economic loss. Biobased lignin and ionic liquids have shown potential as corrosion inhibitors. This study investigated the inhibitory properties of new biobased lignin ionic liquids and found that one of them exhibited promising performance.
Article
Electrochemistry
Rafael Del Olmo, Gregorio Guzman-Gonzalez, Ilda O. Santos-Mendoza, David Mecerreyes, Maria Forsyth, Nerea Casado
Summary: Ion transport in composite electrodes is crucial for the performance of lithium-metal batteries, and the use of ionic conducting polymers as binders has been suggested. In this study, two poly(ionic liquid) polymers were analyzed as binders in LiFePO4 cathodes, and PMTFSI-Li showed the best performance with high specific capacity and long lifespan. Surprisingly, the presence of ionic binders also affected the lithium metal deposition morphology, leading to a more homogeneous plating and mitigating mossy lithium growth.
BATTERIES & SUPERCAPS
(2023)
Article
Computer Science, Artificial Intelligence
Nguyen Thi Khanh Chi, Nam Hoang Vu
Summary: Artificial intelligence (AI) applications play a significant role in various industries, including the service sector. This study focuses on the impact of AI applications on communication quality and customer trust. Empirical results from a survey of 507 customers indicate that empathy response is a crucial factor in building customer trust in AI.
CAAI TRANSACTIONS ON INTELLIGENCE TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Nerea Casado, Sara Zendegi, Liliana C. Tome, Santiago Velasco-Bosom, Ana Aguzin, Matias Picchio, Miryam Criado-Gonzalez, George G. Malliaras, Maria Forsyth, David Mecerreyes
Summary: Poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) mixed conducting polymer electrodes have gained significant attention in healthcare monitoring. However, the use of toxic additives in enhancing their electrical conductivity restricts their application in wearable devices. In this study, a family of biocompatible ionic liquids (ILs) based on the cholinium cation and carboxylated anions were explored as dopants and gelators for PEDOT:PSS, resulting in the formulation of safe bioelectrodes for long-term cutaneous recording.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Polymer Science
Luca Porcarelli, Jorge L. Olmedo-Martinez, Preston Sutton, Vera Bocharova, Asier Fdz De Anastro, Montserrat Galceran, Alexei P. Sokolov, Patrick C. Howlett, Maria Forsyth, David Mecerreyes
Summary: Sodium metal batteries are a promising emerging technology that requires solid electrolytes to address safety issues. This study demonstrates a simple method to prepare a mechanically robust and efficient soft solid electrolyte, which exhibits high ionic conductivity and tunable storage modulus.
Article
Chemistry, Physical
J. Zamora, T. Bautista, N. S. Portillo-Velez, A. Reyes-Montero, H. Pfeiffer, F. Sanchez-Ochoa, H. A. Lara-Garcia
Summary: Experimental and DFT studies were conducted on the structural, magnetic, and optical properties of RFeO3 perovskites. The perovskites exhibited an orthorhombic crystal structure and weak ferromagnetic behavior. They were confirmed to be semiconductors with a bandgap of approximately 2.1 eV.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xianxiang Lv, Jing Jin, Weiguang Yang
Summary: By depositing TiN and TiO2 surface layers on AlSi films, the electrochemical performance of silicon-based anodes can be significantly improved, suppressing volume expansion and promoting the formation of a stable SEI layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Sharafat Ali, Haider Ali, Syedul Hasnain Bakhtiar, Sajjad Ali, Muhammad Zahid, Ahmed Ismail, Pir Muhammad Ismail, Amir Zada, Imran Khan, Huahai Shen, Rizwan Ullah, Habib Khan, Mohamed Bououdina, Xiaoqiang Wu, Fazal Raziq, Liang Qiao
Summary: The construction and optimization of redox-heterojunctions using a bifunctional phosphate as an electron-bridge demonstrated significant improvements in photo catalytic activity, including enhanced dispersion, reduced interfacial migration resistance, and increased abundance of active-sites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ren-Ni Luan, Na Xu, Chao-Ran Li, Zhi-Jie Zhang, Yu-Sheng Zhang, Jun Nan, Shu-Tao Wang, Yong-Ming Chai, Bin Dong
Summary: Extensive research has revealed that oxygen evolution reaction (OER) in alkaline conditions involves dynamic surface restructuring. The development and design of sulfide/oxide pre-catalysts can reasonably adjust the composition and structure after surface reconstruction, which is crucial for OER. This study utilized a simple two-step hydrothermal method to achieve in situ S leaching and doping, inducing the composition change and structure reconstruction of CoFe oxides. The transformed FeOOH and CoOOH exhibited excellent OER activity and could be easily mass-produced using low-cost iron based materials and simple methods.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jun'an Lai, Daofu Wu, Peng He, Kang An, Yijia Wang, Peng Feng, WeiWei Chen, Zixian Wang, Linfeng Guo, Xiaosheng Tang
Summary: Zero-dimensional organic-inorganic metal halides (OMHs) are gaining attention in the fabrication of light-emitting diodes due to their broad emission band and high photoluminescence quantum yield. This work synthesized a zero-dimensional organic tetraphenylphosphonium bismuth chloride (TBC) that showed efficient blue light emission, with the emission mechanism attributed to the transition of Bi3+ ions. White light-emitting diodes (WLEDs) were fabricated using TBC, along with green-emitting and red-emitting single crystals, achieving single-component white emissions. These findings demonstrate the different emission mechanism of ns2 ions-based OMHs and highlight the potential of bismuth-based OMHs in WLEDs applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xuewei Liang, Yunhai Su, Taisen Yang, Zhiyong Dai, Yingdi Wang, Xingping Yong
Summary: The revolutionary design concept of high-entropy alloys has brought new opportunities and challenges to the development of advanced metal materials. In this work, AlCrCuFe2NiTix high-entropy flux cored wires were prepared by combining the design idea of a high-entropy alloy with the characteristics of flux cored wire. AlCr-CuFe2NiTix high-entropy surfacing alloys were prepared using gas metal arc welding technology. The wear properties of the alloys were analyzed, and the phase composition, microstructure, strengthening mechanism, and wear mechanism were discussed. The results show that the alloys exhibit a dendritic microstructure with BCC/B2 + FCC phases. Increasing Ti content leads to the precipitation of Laves phase. The alloys show improved microhardness and wear resistance due to the precipitation of coherent B2 and Laves phases. However, excessive Ti addition results in the increase of Laves phase and reduced wear resistance of the alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
M. Vadivel, M. Senthil Pandian, P. Ramasamy, Qiang Jing, Bo Liu
Summary: This work presents the enhanced photocatalytic and electrochemical performance of g-C3N4 assisted PAA on CoFe2O4 ternary nanocomposites. The incorporation of PAA and g-C3N4 improves the separation efficiency of photogenerated charge carriers, resulting in superior photocatalytic degradation and high specific capacitance values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Vibhu T. Sivanandan, Ramany Revathy, Arun S. Prasad
Summary: In this study, pure and doped cobalt ferrite nanoparticles were prepared using the sol-gel auto-combustion method with the aid of lemon juice as eco-fuel. The crystal structure, lattice parameter, crystallite size, microstrain, optical parameters, and room temperature magnetic properties of the samples were analyzed. The effect of doping on the magnetic properties was also investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qing Guo, Bowen Zhang, Benzhe Sun, Yang Qi
Summary: This study prepared ZnO films with various nonpolar preferred orientations using conventional chemical bath deposition method and characterized their growth process and mechanism. It was found that the type and concentration of nitrate could control the preferred orientation and surface roughness of ZnO films. Additionally, ZnO films with different preferred orientations exhibited different optical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Chong Zhang, Yan Liu, Zhaoyan Wang, Hang Yang
Summary: In this study, six bimetallic FeCo particles were synthesized via the hydrothermal method at different Fe:Co ratios. The Fe:Co ratio not only modulates the composition of the particles but also influences their structure and magnetic properties. The FeCo alloys showed a transformation from an Fe-based structure to a Co-based structure with increasing Co content. The Fe:Co ratio of 1:1 and 3:1 resulted in particles with the highest and lowest saturation magnetization, respectively.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jianning Zhang, Jing Li, Yiren Wang, Xiaodong Mao, Yong Jiang
Summary: We conducted a study on the formation of ultra-fine Y-Ti-Ta-O nano-oxides in Ta+B micro-alloyed 13CrWTi-ODS alloys using electron microscopy and first-principles calculations. The Y-Ti-Ta-O nano-oxides were found to be mainly Y2(Ti,Ta)2O7, with an average size of 7 nm and a number density of 6.8 x 1023 m-3. Excess boron was found to enhance the adhesion of some low-sigma grain boundaries but weaken the Fe/Y2Ti2O7 interface, while excess tantalum enhanced the Fe/Y2Ti2O7 interface but caused serious degradation of grain boundaries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Yirong Fang, Pei Cheng, Hang Yuan, Hao Zhao, Lishu Zhang
Summary: A new composite system of nitrogen-doped reduced graphene oxide and black phosphorus quantum dots has been developed for tumor therapy, showing improved electrochemical properties and stability. The system generates hydrogen peroxide and hydroxyl radical to effectively kill tumor cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xiufang Qin, Yuanli Ma, Hui Zhang, Ting Zhang, Fang Wang, Xiaohong Xu
Summary: The structure and magnetism of cobalt ferrites after Mn2+-Tb3+ co-doping were studied. Co-doped samples exhibited cubic spinel structure and spherical shape of ferrite nanoparticles. The redistribution of Co2+ and Fe3+ ions between octahedral and tetrahedral sites was observed due to Mn2+-Tb3+ co-doping. The coercivity and magnetization saturation of co-doped samples were significantly improved, leading to a maximum energy product that is 190% higher than that of the un-doped sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ho Yeon Lee, Wonjong Yu, Yoon Ho Lee
Summary: Recently, there has been an increasing interest in developing ultra-fine nanostructured electrodes with extensive reaction areas to enhance the performance and low-temperature operation of solid oxide fuel cells. The use of a refined approach involving co-sputtering metal alloys and oxide targets has demonstrated the feasibility of nano-columnar structures in perovskite-based electrodes, expanding the temperature range of thin film electrodes. This study systematically examines the effects of chamber pressure control in the co-sputtering process and identifies the intricate relationship between sputtering pressure and film structure. By fine-tuning the columnar growth in the electrode, significant improvements in performance and thermo-mechanical properties were achieved, resulting in high-performance all-sputtered solid oxide fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qianyun Bai, Xiaoxiao Yan, Da Liu, Kang Xiang, Xin Tu, Yanhui Guo, Renbing Wu
Summary: This study proposes a simple method to develop a non-precious transition metal-based electrocatalyst with high catalytic activity and robustness for the hydrogen evolution reaction. The as-synthesized electrode exhibits a low overpotential and high current density, indicating its potential in energy conversion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
