Article
Multidisciplinary Sciences
Valerio Di Lisio, Isabella Gallino, Sascha Sebastian Riegler, Maximilian Frey, Nico Neuber, Golden Kumar, Jan Schroers, Ralf Busch, Daniele Cangialosi
Summary: The glass transition temperature of metallic glasses can be depressed by up to 40 K by reducing the sample size to below 10 & mu;m, allowing the attainment of glasses with low energy states. The properties of bulk metallic glasses are profoundly affected by reducing the sample size. By systematically reducing the length scale of gold and platinum-based metallic glasses, the vitrification behavior and atomic mobility were studied, revealing size-dependent vitrification kinetics in micrometer-sized glasses.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Jaskaran Singh Saini, John P. Miska, Fuqiong Lei, Nicholas AuYeung, Donghua Xu
Summary: Metallic glasses, especially Hafnium based MGs, have superior properties to conventional crystalline metals/alloys, with HBMGs having the additional advantage of high density. However, their glass-forming ability is limited. Our discovery of two HBMGs with a critical casting diameter significantly higher than the current record allows for the production of bigger products and easier manufacturing/processing.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
G. Afonin, J. C. Qiao, A. S. Aronin, N. P. Kobelev, V. A. Khonik
Summary: In this study, the effect of uniaxial compression on ultrasonic resonant vibrations in a metallic glass was investigated. The 3rd- and 4th-order elastic moduli were determined and previous calculations of sound propagation parameters were corrected. The obtained data were discussed in relation to theoretical predictions.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Chemistry, Physical
S. Sohrabi, R. Gholamipour
Summary: The addition of a small amount of niobium has a significant effect on the glass transition kinetics and fragility of Zr55Cu30Al10Ni5 metallic glasses. It narrows the width of glass transition, accelerates the relaxation process, and decreases the energy barrier of glass transition, resulting in a lower fragility and stronger glass performance.
Article
Materials Science, Multidisciplinary
Yong Hak Kim, Ka Ram Lim, Dong-Won Lee, Yoon Suk Choi, Young Sang Na
Summary: The study suggests that the density of flow units in metallic glass is mainly affected by the final cooling rate rather than the quenching temperature.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Nanoscience & Nanotechnology
A. S. Makarov, G. V. Afonin, R. A. Konchakov, V. A. Khonik, J. C. Qiao, A. N. Vasiliev, N. P. Kobelev
Summary: By introducing a dimensionless order parameter 4, the structural order of glass can be estimated, and this parameter shows a strong correlation with the glass-forming ability.
SCRIPTA MATERIALIA
(2024)
Article
Materials Science, Multidisciplinary
A. Lindsay Greer, Miguel B. Costa, Owain S. Houghton
Summary: There have been remarkable advances in the field of metallic glasses over the last 50 years, including an expanded range of compositions, improved production and shaping techniques, and the discovery of property combinations offering unparalleled performance. Ongoing research continues to provide fundamental insights into the structure and properties of glasses and liquids. This article focuses on the latest advances in understanding and the rapidly expanding prospects for applications.
Article
Nanoscience & Nanotechnology
Bosong Li, Keita Nomoto, Shenghui Xie, Simon P. Ringer, Bernd Gludovatz, Jamie J. Kruzic
Summary: The study investigated the effects of elastostatic compression (ESC) on the structural state and mechanical properties of bulk metallic glasses (BMGs). The results showed that ESC can induce either relaxation or rejuvenation depending on the initial energy state of the samples. Materials in the highest and lowest energy states were stable against structural changes, while those in intermediate energy states exhibited both relaxation and rejuvenation after ESC loading. These findings provide new insights into the behavior of BMGs under ESC.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Physics, Condensed Matter
K. Chen, M. Yuan, H. M. Zheng, S. H. Chen
Summary: In this study, the apparent elastic limit of kirigami metallic glasses (MGs) was determined using finite element analysis (FEM) and the impact of geometric parameters on this limit was investigated. Through parameter optimization, the largest apparent elastic limit of 709% was achieved. These findings are significant for enhancing the elastic performance of kirigami MGs.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Materials Science, Multidisciplinary
Yilin Yao, Qing Du, Yihuan Cao, Yuan Wu, Xianzhen Wang, Xiongjun Liu, Hui Wang, Suihe Jiang, Zhaoping Lu
Summary: This study reports the long-term stability of a series of Cu-Zr MGs in natural environment after twelve years. MGs with low Zr content encounter severe instability due to room-temperature oxidation, while MGs with high Zr content have significantly changed thermal properties due to oxygen permeation.
SCIENCE CHINA-MATERIALS
(2023)
Article
Chemistry, Physical
P. F. Wang, H. Y. Jiang, J. A. Shi, M. Liu, L. Gu, W. Zhou, J. Orava, Y. H. Sun, W. H. Wang, H. Y. Bai
Summary: The newly discovered color-changing metallic glasses can continuously and spontaneously change color under ambient conditions, mainly created by light interference and optical bandgap energy of the oxide layer. The unique qualities of these glasses, including continuous oxidation, uniform oxide layer thickness, and fast color-changing capabilities, are connected to the oxygen affinity of cerium, the glassy structure, and the yttrium dopant regulation. This work not only introduces a new direction for metal oxidation, but also highlights new applications for metallic glass.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Tianding Xu, Xiao-Dong Wang, Eric M. Dufresne, Yang Ren, Qingping Cao, Dongxian Zhang, Jian-Zhong Jiang
Summary: The shape memory effect (SME) is found in annealed metallic glasses (MGs), where atoms can return to low-energy configurations through heating, extending the potential applications of MGs as functional materials.
Review
Materials Science, Multidisciplinary
Cheng Zhang, Di Ouyang, Simon Pauly, Lin Liu
Summary: Bulk metallic glasses (BMGs) as metallic materials without long-range order have attracted significant attention from academia and industry in the past three decades. The emerging 3D printing technology provides a viable route to overcome the challenges inherent in conventional processing routes and expand the applications of BMGs.
MATERIALS SCIENCE & ENGINEERING R-REPORTS
(2021)
Review
Materials Science, Multidisciplinary
Jianan Fu, Jiang Ma
Summary: This article systematically summarizes the nanoengineering approaches for fabricating metallic glasses with nanostructures and classifies the morphology and composition of different types of metallic glasses with nanostructures. The functional properties and applications of these materials are focused on, and potential functional applications are anticipated.
ADVANCED ENGINEERING MATERIALS
(2023)
Review
Materials Science, Multidisciplinary
Baran Sarac, Juergen Eckert
Summary: This review provides an overview of the potential of bulk metallic glasses (BMGs) as net-shaping materials, their thermal processing capability, micro-/nano-structure, deformation behavior, and flow kinetics. It also discusses the variation of properties in the supercooled liquid region, high temperature deformation modeling, and applications of thermally-formed BMGs in various fields.
PROGRESS IN MATERIALS SCIENCE
(2022)
Article
Physics, Multidisciplinary
Qi Hao, Ji-Chao Qiao, E. Goncharova, G. Afonin, Min-Na Liu, Yi-Ting Cheng, V. A. Khonik
Article
Materials Science, Multidisciplinary
Andrei Makarov, Gennadii Afonin, Yurii Mitrofanov, Nikolai Kobelev, Vitaly Khonik
Article
Chemistry, Physical
A. S. Makarov, Yu. P. Mitrofanov, E. V. Goncharova, J. C. Qiao, N. P. Kobelev, A. M. Glezer, V. A. Khonik
Article
Physics, Condensed Matter
A. S. Makarov, R. A. Konchakov, Yu P. Mitrofanov, M. A. Kretova, N. P. Kobelev, V. A. Khonik
JOURNAL OF PHYSICS-CONDENSED MATTER
(2020)
Article
Chemistry, Physical
V. A. Khonik
Summary: Professor A.V. Granato is a key scientist known for his contributions to understanding dislocation relaxations in crystals. He also proposed the Interstitialcy theory (IT) which offers new insights on melting, equilibrium/supercooled liquids and glasses in relation to the maternal crystalline state. This theory's origins, basic results, and recent developments are briefly discussed in the article.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Physics, Multidisciplinary
R. A. Konchakov, A. S. Makarov, A. S. Aronin, N. P. Kobelev, V. A. Khonik
Summary: Molecular dynamics simulations of aluminum near its melting point show a significant increase in vibrational entropy of interstitial defects with dumbbell configuration. By estimating the density of these defects in the melt through three independent methods, the configurational entropy of the system with defects is determined. Approximately 70% of the total entropy of melting can be attributed to the generation of interstitial dumbbells at T = T-m.
Article
Materials Science, Ceramics
A. S. Makarov, G. Afonin, R. A. Konchakov, J. C. Qiao, A. S. Aronin, N. P. Kobelev, V. A. Khonik
Summary: This study conducted parallel measurements of enthalpy and high-frequency shear modulus changes during structural relaxation of five bulk metallic glasses. The analysis revealed a one-to-one correlation between the change in molar enthalpy and the alteration in the calculated number of defects based on Interstitialcy theory. The defect formation enthalpy derived from this correlation aligns well with the accepted quantity in the Interstitialcy theory.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Physics, Condensed Matter
A. S. Makarov, J. C. Qiao, N. P. Kobelev, A. S. Aronin, V. A. Khonik
Summary: This study focuses on the fragility of supercooled liquids, demonstrating the relationship between fragility and high-frequency shear modulus. The heat capacity jump is also found to be related to fragility and shear modulus relaxation. The results suggest that the evolution of interstitial-type defects frozen-in during glass production mediates the connection between fragility, heat capacity jump, and high-frequency shear modulus in the supercooled liquid state.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2021)
Article
Chemistry, Physical
N. P. Kobelev, J. C. Qiao, A. S. Makarov, A. M. Glezer, V. A. Khonik
Summary: The study reports measurements of internal friction and shear modulus of glassy Cu49Hf42Al9 at different frequencies and temperatures. It is found that the relaxation of internal friction and shear modulus decreases with increasing frequency in the investigated range. A new method for determining the Gibbs activation energy of relaxation is derived, and the underlying activation energy spectrum is found to smoothly increase with accessible activation energies in the experiment.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Physics, Condensed Matter
A. S. Makarov, G. Afonin, J. C. Qiao, A. M. Glezer, N. P. Kobelev, V. A. Khonik
Summary: By performing calorimetric and shear modulus measurements on bulk metallic glasses, this study demonstrates the consistency between the calorimetric determination and calculation of excess thermodynamic potentials, with a focus on the physical origin of these potentials being related to a system of interstitial-type defects frozen-in from the liquid state. The estimates of defect formation enthalpy and entropy indicate that the enthalpy scales with the shear modulus while the entropy is significantly large, aligning with the basic assumptions of the interstitialcy theory.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2021)
Article
Physics, Condensed Matter
A. S. Makarov, G. Afonin, A. S. Aronin, N. P. Kobelev, V. A. Khonik
Summary: A novel approach is presented in this paper to understand the heat effects caused by structural relaxation of metallic glasses. By applying a general thermodynamic equation, the entropy change in glass relaxation can be determined, and the kinetics of the heat effects controlled by defect-induced structural relaxation can be calculated. The experimental results show a good agreement with the calculated results.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2022)
Article
Materials Science, Multidisciplinary
Andrei Makarov, Marina Kretova, Gennadii Afonin, Nikolai Kobelev, Vitaly Khonik
Summary: This study conducted high-precision measurements of the temperature dependences of the shear modulus G in bulk metallic glass. It found that plastic deformation significantly affects the anharmonic, electronic, and relaxation components of G, with the relaxation contribution increasing, anharmonic component increasing, and electronic component decreasing.
Article
Nanoscience & Nanotechnology
A. S. Makarov, G. V. Afonin, R. A. Konchakov, V. A. Khonik, J. C. Qiao, A. N. Vasiliev, N. P. Kobelev
Summary: By introducing a dimensionless order parameter 4, the structural order of glass can be estimated, and this parameter shows a strong correlation with the glass-forming ability.
SCRIPTA MATERIALIA
(2024)
Article
Chemistry, Physical
A. S. Makarov, R. A. Konchakov, J. C. Qiao, A. N. Vasiliev, N. P. Kobelev, V. A. Khonik
Summary: This study investigates the relationship between defect concentration and the structure factor of glasses based on shear modulus measurements and molecular dynamics simulation. The results show that defect-induced disordering is independent of glass thermal prehistory above the glass transition temperature, while significant differences exist between initial and relaxed samples below the transition temperature.
Article
Physics, Multidisciplinary
G. V. Afonin, Yu. P. Mitrofanov, N. P. Kobelev, V. A. Khonik
JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS
(2020)
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)
