Article
Materials Science, Multidisciplinary
Halil Ibrahim Soezen
Summary: This study investigates the possible diffusion mechanisms in B2-FeAl through ab initio calculations. The results suggest that the next-nearest neighbor jump of Fe vacancies and the [110] six-jump cycle are the dominant diffusion mechanisms and are in good agreement with experimental measurements.
COMPUTATIONAL MATERIALS SCIENCE
(2022)
Article
Metallurgy & Metallurgical Engineering
Hui-bin Zhang, Hang Yu, Jun-liang Ma, Long-fei Wang, Sheng-hang Xu, Guo-qu Zheng
Summary: The oxidation mass gains of porous FeAl materials at high temperatures can be significantly reduced through coalloying. The enrichment of B on the oxide scales and the presence of Y at the scale-metal interface promote the formation of thin protective α-Al2O3 oxide scales.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2022)
Article
Materials Science, Multidisciplinary
Xiong Wen, Bensheng Huang, Yujiang Xie, Xia Luo
Summary: Fe-Al-x%TiC composite porous materials were synthesized by the reaction of Fe+Al+TiC mixed powder. The addition of TiC could affect the porosity, phase, and oxidation resistance of Fe-Al-based porous materials by controlling the self-propagating high-temperature synthesis (SHS) reactions of Fe and Al during the sintering process.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2022)
Article
Materials Science, Ceramics
Pavel A. Miloserdov, Vladimir A. Gorshkov, Dmitrii E. Andreev, Vladimir I. Yukhvid, Olga M. Miloserdova, Olga A. Golosova
Summary: The ceramic composite material Al2O3-Cr2O3 + TiC was prepared by metallothermic self-propagating high-temperature synthesis (SHS). The increase in the mass fraction alpha of CrO3 + Al was found to raise the synthesis temperature, resulting in sintered multiphase products or separated carbide and oxide phases. After optimization, the synthesized material exhibited promising physical and mechanical properties for being used as a cutting tool.
CERAMICS INTERNATIONAL
(2023)
Review
Engineering, Manufacturing
Himanshu Singh, Prateek Saxena, Y. M. Puri
Summary: Metal membrane technology is an environmentally promising method for separation, gaining attention for its high flux, simplicity, space and energy savings, and chemical-free operation. Recent developments in metal membrane materials have significantly improved separation technologies, leading to the next generation of metal membrane-based separation methods.
CIRP JOURNAL OF MANUFACTURING SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
Dariusz Siemiaszko, Iwona Garwacka
Summary: Iron aluminium alloy produced by pressure-assisted induction sintering shows unexpectedly high ductility in compression test, but lower tensile properties. Microstructural observations reveal plastic behavior with no decohesion.
Article
Nanoscience & Nanotechnology
Mohammad Abedi, Atefeh Asadi, Saeed Sovizi, Dmitry Moskovskikh, Stepan Vorotilo, Alexander Mukasyan
Summary: The effect of pulsed direct current (PDC) on solid-state diffusion in the Ni-Al binary system was investigated. It was found that PDC significantly enhanced the growth rates of two intermetallic phases and reduced the activation energy of diffusion.
SCRIPTA MATERIALIA
(2022)
Article
Materials Science, Multidisciplinary
Zhigang Xu, Weijin Wang, Hui Wang, Chao Yang, Qiang Shen, Chuanbin Wang
Summary: A porous Fe-Al intermetallic material with ultrahigh open porosity is prepared through multistep sintering using a Fe-Al-Mn powder mixture. The microstructure, phase composition, Mn sublimation, and open porosity are investigated. The 1250 degrees C-sintered compacts exhibit a single Fe-Al intermetallic phase with an even chemical composition and approximate 66.67 vol% open porosity, superior to other reported porous Fe-Al materials. The strength is approximately 22.5 MPa, which is competitive as well. This work opens up a new strategy for designing and optimizing high-quality porous Fe-Al alloys in the future.
ADVANCED ENGINEERING MATERIALS
(2023)
Review
Materials Science, Multidisciplinary
Seetharama C. Deevi
Summary: This review discusses the unique ability of spray coatings of intermetallic iron aluminides to overcome the limitations of traditional engineering materials, comparing their high temperature oxidation and corrosion resistant properties with high temperature steels. The status of Fe3Al and FeAl coatings obtained by various spray techniques is presented, along with discussions on spray parameters, microstructure, and properties of the coatings. Additionally, the paper explores the application of spray techniques in achieving cost effective manufacturing by applying a layer of material as a coating instead of replacing the product obtained after melting, casting, and processing into desired shape.
PROGRESS IN MATERIALS SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
A. D. Prokopets, P. M. Bazhin, A. S. Konstantinov, A. P. Chizhikov, M. S. Antipov, V. V. Avdeeva
Summary: By studying the preparation and properties of TiAl/TiB2-based composite materials, the hardness, structure, and phase composition of the material can be determined, achieving a gradual approach of the surface hardness of the alloy to the hardness of the alloy itself.
Article
Chemistry, Physical
D. Vijaya Lakshmi, P. Suresh Babu, L. Rama Krishna, P. Vijaya Durga, D. Srinivasa Rao
Summary: The electrochemical corrosion and erosion wear behaviors of detonation sprayed ODS FeAl powder coatings on T91 substrate were investigated. The corrosion resistance of the ODS FeAl coatings was better than T91 substrate in 3.5wt% Na2SO4, but worse than detonation sprayed Cr3C2-25NiCr coatings. However, the ODS FeAl coatings exhibited significantly improved wear resistance compared to Cr3C2-25NiCr coatings at room temperature and a higher temperature of 400°C.
Article
Materials Science, Multidisciplinary
Jiri Kozlik, Jozef Vesely, Josef Strasky, Tomas Chraska, Milos Janecek
Summary: The study investigates the manufacturing of architectured heterogeneous metallic composites using FAST technology, showing successful bonding between titanium wire and aluminum alloy powder. The formation of ternary phases and diffusion layer as well as the discovery of a modulated structure resembling LPSO phase open up new possibilities for material design and manufacturing.
Article
Materials Science, Ceramics
Konstantin Bolgaru, Anton Reger, Vladimir Vereshchagin, Alexander Akulinkin
Summary: A method for manufacturing silicon nitride-based composites with a desired porosity using self-propagating high-temperature synthesis has been developed. The effects of starting specimen composition, pressure, and diameter on combustion parameters were studied, with the addition of aqueous-alkali solution. The phase composition of the composites was determined, showing porosities of 25.11%-55.08% predominantly with open pores in the range of 21-305 μm.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
J. X. Yan, Z. J. Zhang, K. Q. Li, J. B. Yang, Z. F. Zhang
Summary: The study investigates the evolution of core structure and cross-slip behavior of a screw [111] superdislocation in FeAl through molecular dynamics simulations. It reveals that the transformation of core configurations determines the cross-slip behavior, proposing two new cross-slip mechanisms. A numerical calculation method is introduced to quantitatively assess the critical shear stress of core transformation and cross-slip under different pressures, showing good agreement with simulation results. The influence of applied stresses on the competition between glide and cross-slip behaviors of a dissociated superdislocation is also discussed, advancing the understanding of core configuration dependence on external pressures and shear stresses.
COMPUTATIONAL MATERIALS SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Jianan Li, Shenghua Deng, Ruidi Li, Tiechui Yuan
Summary: The research discovered the formation of Co7W6 and Co3W layers at the W/Co interface during SPS with the application of current. It was observed that the growth of the Co3W layer was significantly improved by high current, with the growth rate increasing with current density. The activation energy for the growth of the Co3W layer was found to decrease with higher current density, suggesting that current lowers nucleation barrier and promotes chemical reactions.
MATERIALS RESEARCH EXPRESS
(2021)
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)