Article
Materials Science, Multidisciplinary
I Estrada-Guel, C. A. Rodriguez-Gonzalez, J. Hernandez-Paz, O. Jimenez, A. Santos-Beltran, R. Martinez-Sanchez, M. Romero-Romero, C. D. Gomez-Esparza
Summary: The concept of High-Entropy Alloy (HEA) has expanded the research field of advanced metallic materials. In this study, the AlCoCrCuFeNi HEA was modified by replacing copper with titanium to form a tetragonal phase for hardening effects. Through structure and microstructure analysis, as well as nanoindentation testing, the correlation between composition, crystalline structure, and mechanical properties of the alloy was determined.
Article
Materials Science, Multidisciplinary
Guangyu Ma, Tuo Cheng, Hailong Jia, Long Yuan, Orest M. Ivasishin, Dmytro G. Savvakin
Summary: The sintered TC16 alloy prepared by the master-alloy pre-hydrogenation method exhibits nearly full density and good mechanical properties, with reduced porosity and improved strength and ductility.
MATERIALS & DESIGN
(2023)
Article
Chemistry, Physical
Laura Elena Geambazu, Dorinel Talpeanu, Robert Viorel Bololoi, Ciprian Alexandru Manea, Alina Elena Bololoi, Florin Miculescu, Delia Patroi, Vasile Danut Cojocaru
Summary: Alloys with superior properties have been the focus of recent studies due to their effectiveness in reducing equipment maintenance costs and improving usage time. In this study, Al0.5CrFeNiTi alloy was produced by solid state processing in a planetary ball mill, and further processed by pressing and sintering. The results showed that mechanical alloying processing reduced the particle size of the metal powder, and the pressed and sintered samples had no major defects.
Article
Chemistry, Physical
Hansung Lee, Ashutosh Sharma, Byungmin Ahn
Summary: This study investigates the influence of Si addition on the microstructure, compressive strength, and fracture mechanisms of FeCoNiAlSi high-entropy alloys (HEAs). The results show that the addition of Si changes the phase structure of the alloy and increases its Vickers hardness and compressive strength. The findings suggest that HEAs with different Si contents can be used for designing high-strength structural alloys for automotive applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Yuehuang Xie, Zhen Zhang, Yifei Luo, Jun Wang, Jiamiao Liang, Deliang Zhang
Summary: High strength ultrafine grained CoCrFeNiMn high entropy alloys containing TiO(C) nanoparticles were fabricated. The results showed that grain refinement led to a decrease in yield strength but a significant increase in fracture elongation. Introducing intragranular Ni-Ti nanoparticles can maintain high yield strength and enhance fracture elongation.
Article
Materials Science, Multidisciplinary
Ahmad Farrahnoor, Hussain Zuhailawati
Summary: By varying the content of HA in titanium-niobium-hydroxyapatite composite, the bioactivity of the material can be adjusted, with the most significant impact observed at 15% HA content. The decomposition of HA was found to enhance bioactivity, and the formation of apatite on the surface of the composite accelerated this process.
MATERIALS TODAY COMMUNICATIONS
(2021)
Review
Materials Science, Multidisciplinary
Bo-ren Ke, Yu-chen Sun, Yong Zhang, Wen-rui Wang, Wei-min Wang, Pei-yan Ma, Wei Ji, Zheng-yi Fu
Summary: This paper introduces the methods of synthesizing HEA powders and consolidating HEA bulk. It summarizes the phase transformation, microstructural evolution, and mechanical properties of HEAs obtained by powder metallurgy. Additionally, HEA-related materials such as ceramic-HEA cermets and HEA-based composites fabricated by powder metallurgy are also discussed.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Parisa Akhlaghi, Mostafa Amirjan, Nader Parvin
Summary: CoCrFeMnNiTi0.1 high-entropy alloy was fabricated using mechanical alloying and sintering, showing that smaller grain size over time led to improved mechanical properties. The addition of Ti resulted in grain boundary strengthening and precipitation hardening, with the 20-h heat-treated sample exhibiting the optimum mechanical properties.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Physical
Chenzeng Zhang, Cunguang Chen, Pei Li, Mengjie Yan, Qian Qin, Fang Yang, Wenwen Wang, Zhimeng Guo, Alex A. Volinsky
Summary: Powder metallurgy Cu-30Fe alloy was prepared using mechanical alloying, pressureless sintering, and rolling processes. The rolling process affected the alloy microstructure and physical properties. The Fe particles became elongated and changed shape, while the Cu grains became elongated and refined. The coordinated deformation of the Cu and Fe phases resulted in finer Cu grains near the Fe particles. After annealing, the cold-rolled Cu-30Fe alloy achieved a good combination of mechanical and functional properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Zhen Zhang, Qianqian Wang, Dikunqi Mu, Gaoyuan Shen, Mohan Liu, Mai Zhang, Sammy Lap Ip Chan, Jiamiao Liang, Jun Wang
Summary: The CoCrFeNiAl0.3 high entropy alloy samples were produced using different ball milling strategies, and the microstructure and phase formation were investigated. The study found that mechanical mixing resulted in a mixture of FCC and BCC structured matrix, as well as intermediate multiphases, while mechanical alloying produced a single phase FCC matrix. The microstructure exhibited good thermal stability, attributed to the pinning effects of dispersed Al2O3 nanoparticles. The Al2O3 nanoparticles played a dominant role in improving the mechanical properties.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Multidisciplinary
Wenshu Li, Bingfeng Wang, Xiaoxia Huang, Bin Liu, Jamieson Brechtl, Peter K. Liaw
Summary: Powder-metallurgy-fabricated CoCrFeMnNi high-entropy alloys (HEAs) show great potential for application in high-speed impact deformation due to their uniform microstructures and compositions. The mechanical behavior of the alloy at room temperature and under different strain rates was investigated, revealing the occurrence of serration behavior and shear localization. The study also found that the yield strength values of the alloy were sensitive to strain rates, with an increase observed as the strain rates increased. Shear bands with nanotwins and ultrafine-equiaxed grains were observed in the alloy, indicating higher strength compared to the matrix grain.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Nanoscience & Nanotechnology
Peyman Asghari-Rad, Praveen Sathiyamoorthi, Nhung Thi-Cam Nguyen, Alireza Zargaran, Taek Soo Kim, Hyoung Seop Kim
Summary: This study demonstrates a novel approach to achieve a high synergy of tensile strength and ductility in alloys fabricated by powder metallurgy, using high-pressure torsion and annealing. The results show exceptional tensile properties that have never been achieved before in this field, offering new possibilities for the fabrication of high-entropy alloys and composites.
SCRIPTA MATERIALIA
(2021)
Article
Nanoscience & Nanotechnology
Cheenepalli Nagarjuna, Sheetal Kumar Dewangan, Hansung Lee, Byungmin Ahn
Summary: A novel equiatomic CrFeNiTiV high entropy alloy (HEA) was synthesized through mechanical alloying and spark plasma sintering, and the effects of heat treatment temperature on the phase stability and mechanical properties were investigated. The results showed that the phase and mechanical properties of the HEA were improved after heat treatment, making it suitable for high-temperature applications.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Chemistry, Physical
Yigit Garip
Summary: This study investigated the effects of alloying elements on the microstructure and oxidation performance of high entropy alloys, revealing that Si addition can enhance oxidation resistance, while Cu addition leads to thickening of the oxide scale and increased mass change. Si addition increases the amount of Ni-rich oxide in the oxide scale, and Cu addition results in a specific structure of the oxide scale in Cu-added and Si-Cu co-added HEAs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Yigit Garip
Summary: This study investigates the effects of alloying elements on the microstructure and oxidation performance of high entropy alloys. It was found that the addition of Si improves the oxidation resistance, while Cu addition increases the thickness of the oxide scale. The alloying elements do not have a favorable effect on relieving internal oxidation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
M. A. Aviles, J. M. Cordoba, M. J. Sayagues, F. J. Gotor
JOURNAL OF MATERIALS SCIENCE
(2020)
Article
Materials Science, Ceramics
E. Chicardi, C. Garcia-Garrido, J. Hernandez-Saz, F. J. Gotor
CERAMICS INTERNATIONAL
(2020)
Article
Materials Science, Multidisciplinary
Sergio Sauceda, Sheila Lascano, Luis Bejar, Guilherme O. Neves, Ernesto Chicardi, Christopher Salvo, Claudio Aguilar
Article
Pharmacology & Pharmacy
Isabel de Lavera, Patrick J. Merkling, Jose M. Oliva, Maria J. Sayagues, David Cotan, Jose A. Sanchez-Alcazar, Juan J. Infante, Ana P. Zaderenko
Summary: The study has identified promising candidates by conjugating the ligand and antibody to a drug delivery system, demonstrating synergy and enhancing the anti-tumor activity.
EUROPEAN JOURNAL OF PHARMACEUTICAL SCIENCES
(2021)
Article
Materials Science, Multidisciplinary
Jesus E. Gonzalez, Gabriela de Armas, Jeidy Negrin, Ana M. Beltran, Paloma Trueba, Francisco J. Gotor, Eduardo Peon, Yadir Torres
Summary: Ti6Al4V samples obtained by selective laser melting were treated with acid etching, chemical oxidation, and thermochemical processing to observe the effects on surface features. Acid etching temperature had a greater influence on surface characteristics than time. The surfaces displayed nanostructures after the full treatment process, enhancing bioactivity and biomechanics fixation.
Article
Chemistry, Multidisciplinary
Francisco J. Garcia-Garcia, Maria J. Sayagues, Francisco J. Gotor
Summary: This study proposed a mechanochemical route for synthesizing the PrBaMn2O5+delta (PMBO) double layered perovskite phase, achieving the desired phase through high-energy milling combined with high-temperature annealing in air. The obtained phase showed high electrical conductivity in a reducing atmosphere, making it an excellent candidate for solid oxide fuel cell (SOFC) electrodes. The microstructural characterization confirmed the formation of the intended PrBaMn2O5+delta phase.
Article
Materials Science, Multidisciplinary
Erika Dutkova, Maria Jesus Sayagues, Martin Fabian, Matej Balaz, Marcela Achimovicova
Summary: In this work, famatinite Cu3SbS4 was successfully synthesized using elemental precursors via laboratory planetary ball milling and industrial eccentric vibratory milling, with crystallite sizes of 14 nm and 10 nm, respectively. The determined band gap energy of 1.31 eV and 1.24 eV shows a blue-shift relative to bulk Cu3SbS4, indicating potential photovoltaic properties. The scalable milling process represents a promising route for mass production of Cu3SbS4.
Article
Engineering, Electrical & Electronic
Erika Dutkova, Maria Jesus Sayagues, Martin Fabian, Jaroslav Kovac, Jaroslav Kovat, Matej Balaz, Martin Stahorsky
Summary: This work presents a rapid one-step mechanochemical synthesis method to prepare nanocrystalline CuSbS2, demonstrating its promising crystal structure, stability, and optical properties for potential application as light absorbers in photovoltaics. The study also suggests a novel approach for the preparation of other ternary semiconductor nanomaterials.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
M. A. Avil, F. J. Gotor
Summary: Solid solution samples of Mn2+-doped ZnSxSe1-x were synthesized through a mechanically-induced self-sustaining reaction process. The band-gap energy of the samples was controlled by changing the stoichiometry of the solid solution. However, an efficiency loss was observed with increasing Se content.
Article
Chemistry, Physical
Ricardo Chavez-Vasconez, Sheila Lascano, Sergio Sauceda, Mauricio Reyes-Valenzuela, Christopher Salvo, Ramalinga Viswanathan Mangalaraja, Francisco Jose Gotor, Cristina Arevalo, Yadir Torres
Summary: Commercially pure titanium grade IV with a bimodal microstructure is a promising material for biomedical implants. The influence of processing parameters on its physical, microstructural, and mechanical properties was investigated. It was found that a bimodal microstructure and a porous structure could be achieved by blending powder particles with different sizes and using the space-holder technique.
Article
Biochemistry & Molecular Biology
Erika Dutkova, Maria Jesus Sayagues, Martin Fabian, Matej Balaz, Jaroslav Kovac, Jaroslav Kovac Junior, Martin Stahorsky, Marcela Achimovicova, Zdenka Lukacova Bujnakova
Summary: Copper, antimony, and sulfur were used to synthesize skinnerite (Cu3SbS3) through mechanochemical synthesis in laboratory and industrial mills. XRD analysis confirmed the formation of pure monoclinic skinnerite in the laboratory mill and a mixture of skinnerite, famatinite, and tetrahedrite in the industrial mill. The resulting nanocrystals were agglomerated into micrometer-sized grains. Optical and optoelectrical properties of the skinnerite prepared in the laboratory mill showed potential for photovoltaic applications.
Article
Crystallography
Erika Dutkova, Matej Balaz, Maria Jesus Sayagues, Jaroslav Kovac, Jaroslav Kovac
Summary: Ternary wittichenite Cu3BiS3 nanocrystals were synthesized in only 5 min by mechanochemical method. The nanocrystals showed orthorhombic structure with an average crystallite size of about 38 nm. The UV-Vis absorption spectrum revealed a bandgap energy of 1.52 eV, indicating their potential application in photovoltaic devices.
Article
Materials Science, Composites
Samia Lemboub, Azzedine Boudebane, Said Boudebane, Amel Bourbia, Samiha Mezrag, Francisco Jose Gotor
Summary: This study successfully produced composite materials through the combustion in thermal explosion mode of reactive mixtures. The manufactured samples exhibited excellent performance in terms of microstructure, hardness, and tribological behavior.
COMPOSITE INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Juliette Normand, Rocio Moriche, Cristina Garcia-Garrido, Ranier Enrique Sepulveda Ferrer, Ernesto Chicardi
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)