Article
Chemistry, Physical
Min-Seok Baek, Abdul Wahid Shah, Young-Kyun Kim, Shae-K. Kim, Bong-Hwan Kim, Kee-Ahn Lee
Summary: This study investigated the microstructures, mechanical properties, tensile deformations, and strengthening mechanisms of Al-Mg alloys with different Mg contents. Higher Mg content resulted in higher fractions of C15 phases and increased yield strengths. The 9Mg alloy exhibited better resistance to serrated flow due to its fine equiaxed grains and higher Mg content and number densities of obstacles. Solid-solution and grain-boundary strengthening contributed to the overall yield strength. The study demonstrated the potential of conventional models to accurately predict the yield strengths of Al-Mg alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Hongxiang Jiang, Qiuju Zheng, Yan Song, Yanqiang Li, Shixin Li, Jie He, Lili Zhang, Jiuzhou Zhao
Summary: The influence of the rare earth element La on the microstructures and properties of Al-Mg-Si alloys has been investigated. It was found that adding minor La can increase the ultimate tensile strength and yield strength of the alloy by decreasing grain size and promoting the precipitation of (Mg, Si) phase.
MATERIALS CHARACTERIZATION
(2022)
Article
Metallurgy & Metallurgical Engineering
Shu-heng He, Ce Wang, Chao Sun, Yue Zhang, Kai Yan, Jing-hua Jiang, Jing Bai, Feng Xue, Huan Liu
Summary: This study investigates the effect of separate Al2Ca and Mg2Ca phases on the corrosion properties of Mg-Al-Ca-Mn alloys. The results show that ECAP alloys corrode slower compared to as-cast alloys, thanks to the dispersion and refinement of the second phase. Additionally, the corrosion degree is lower in the presence of the Al2Ca phase compared to the Mg2Ca phase, indicating that Al2Ca phase enhances the corrosion resistance of Mg-Al-Ca-Mn-based alloys more effectively.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2022)
Article
Materials Science, Multidisciplinary
Anderson Thadeu Nunes, Guilherme Lisboa de Gouveia, Jose Eduardo Spinelli
Summary: This study investigates the influence of cooling rates on the phase morphology and tensile properties of ternary Al-Mg-Sc alloys. It was found that higher amounts of Mg result in higher solidification rates and the formation of a variety of microstructures. Among the alloys studied, the Al-5 wt% Mg-Sc alloy exhibited superior tensile strength due to the predominance of cells and thinner primary dendrites trunks forming its microstructure.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Chongchen Xiang, Zhuo Huang, Zijian Wang, Hanlin Ding, Shun Xu
Summary: In this paper, Cu alloying was used to study Mg-Al-Ca-Mn-Cu magnesium alloys, aiming to develop magnesium alloys with higher heat conduction. The mechanical properties and thermal conductivity of the alloys were evaluated simultaneously due to the addition of Cu, meeting the requirements of developing high-strength and high-conductivity magnesium alloys. Compared with the commercial AZ31 magnesium alloy, the strength and plasticity of the alloys were improved through fine grain strengthening. Meanwhile, the amount of solid solution atoms in the alloy decreased and the content of the second phase particles increased, leading to a reduced degree of lattice distortion. On the other hand, the Cu element provided a large amount of free electrons for heat transfer, resulting in high thermal conductivity for the alloys.
MATERIALS CHARACTERIZATION
(2023)
Article
Chemistry, Multidisciplinary
Hong-Chen Yu, Yu-Zhuo Men, Shu-Guo Yang, Hui Liu, Lei Yu, Xue-Dong Xu, Yi-Fei Li, Chang-Sheng Zou, Hao-Nan Wang, Wei-Rong Zhong
Summary: The study investigated the combined influence of Mg/Si and Ca contents on the crystallization of primary Mg2Si in Al-Mg2Si alloy. By restricting the embryo formation and growth of primary Mg2Si, the researchers successfully prepared dice-like primary Mg2Si in an over-modified alloy, revealing a novel method to control the morphology and particle size of primary Mg2Si and further understand the crystallization process.
Article
Materials Science, Multidisciplinary
Zahra Nasiri, Mahmoud Sarkari Khorrami, Hamed Mirzadeh, Massoud Emamy
Summary: Friction stir processing leads to significant grain refinement and enhancement of mechanical properties in magnesium alloys. Calcium-containing alloys show more intense grain refinement due to the presence of thermally-stable Al-Ca intermetallics. The AX43 alloy with a grain size of 1.7µm exhibits the best tensile properties.
Article
Chemistry, Physical
Abdul Wahid Shah, Seong-Ho Ha, Jabir Ali Siddique, Bong-Hwan Kim, Young-Ok Yoon, Hyun-Kyu Lim, Shae K. Kim
Summary: The study investigated the effect of varying magnesium levels on the solidification process, microstructure development, tensile properties, and precipitation hardening of Al-Cu-Mg-Ti alloys. The results showed that alloys with different magnesium levels formed different phases during solidification. The alloy with 7% magnesium exhibited the best combination of yield strength and elongation after heat treatment. DSC analysis revealed that the increased tensile strength was associated with the formation of solute clusters and specific phases.
Article
Materials Science, Multidisciplinary
Elaheh Maleki, Farzad Shahri, Masoud Emamy
Summary: The study found that adding 0.1 wt% Ca significantly enhanced the ultimate tensile strength and elongation of the as-cast alloy. The size of DRXed grains decreased with the increase of Ca, and the best result was obtained for the Mg-5Zn-0.1Ca sample, with an ultimate tensile strength of 351 MPa and an elongation percentage of 24% for the extruded alloy.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Xinsheng Huang, Mingzhe Bian, Isao Nakatsugawa, Yasumasa Chino, Masahiko Sato, Kazumasa Yamazaki, Futoshi Kido, Hironori Ueda, Masashi Inoue
Summary: The study found that increasing the manganese content can significantly enhance the yield strength of Mg-3Zn-0.5Ca-0.5Al-xMn alloy, but further increasing to 1.5 wt% manganese content does not contribute to further strengthening. However, the alloy with 1 wt% manganese added achieved high strength, high formability, and improved thermal conductivity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Civil
Zahra Nasiri, Hamed Mirzadeh, Mahmoud Sarkari Khorrami, Massoud Emamy
Summary: The synergistic effects of partial replacement of Al with Ca, homogenization heat treatment, and hot extrusion on the microstructure and mechanical properties of Mg-(7-x)Al-xCa magnesium alloys were studied. Homogenization resulted in eutectic constituents spheroidization and tensile ductility improvement, while hot extrusion led to fragmentation and dispersion of particles, formation of fine microstructures, and profound enhancements of tensile properties. The extruded AX43 alloy showed significantly better product of strength and ductility compared to the as-cast counterpart.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2021)
Article
Metallurgy & Metallurgical Engineering
A. M. Samuel, F. H. Samuel, H. R. Ammar, Y. Zedan, H. W. Doty
Summary: The present study investigated the effects of Ca and Bi additions on the eutectic Si characteristics and tensile properties of B319 alloy modified with about 180 ppm Sr. The results showed that Ca addition up to 500 ppm led to partial modification, while the addition of 0.1% Bi caused almost complete un-modified structure. Interactions between Ca-Mg and Bi-Mg resulted in a significant deterioration in the tensile properties of the alloy.
INTERNATIONAL JOURNAL OF METALCASTING
(2022)
Article
Nanoscience & Nanotechnology
Jian Rong, Wenlong Xiao, Yu Fu, Xinqing Zhao, Peng Yan, Chaoli Ma, Ming Chen, Chen Huang
Summary: A high-performance Mg-7Al-3Ca alloy was prepared via high-pressure die casting method, exhibiting high strength, good thermal conductivity, and acceptable heat resistance. The high strength was attributed to various strengthening mechanisms, while the thermal conductivity was maintained due to the presence of Ca.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Qingyu Hou, Xiaofeng Xu, Yang Zhao, Xudong Yan, Yachong Zhou, Jinguo Wang, Lai Wei, Yongqiang Yu
Summary: This study investigates the effects of electropulsing treatment (EPT) and conventional heat treatment on the microstructure and mechanical properties of extruded Mg-1.18Al-0.3Ca-0.46Mn alloy. The results show that EPT can replace solid solution treatment, refine grains, and reduce peak aging time. The accelerated aging process may be attributed to the increased vacancies and dislocations induced by EPT.
Article
Materials Science, Multidisciplinary
Shunzi Luo, Leyun Wang, Jingya Wang, Gaoming Zhu, Xiaoqin Zeng
Summary: Laves phases with the AB2 stoichiometry are commonly found in Mg alloys. It is generally believed that Laves phases are detrimental for Mg's ductility. However, recent studies have shown that in Mg-Al-Ca alloys, the Al2Ca phase can deform plastically, resulting in high ductility and strong work hardening.
Article
Metallurgy & Metallurgical Engineering
Wenhui Yao, Yonghua Chen, Yanning Chen, Liang Wu, Bin Jiang, Fusheng Pan
Summary: This study utilizes the slippery liquid-infused porous surface (SLIPS) technique to form a protective coating on AZ31 magnesium alloys. The results show that 120°C is the optimal condition for SLIPS to provide corrosion protection.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2023)
Article
Metallurgy & Metallurgical Engineering
Jinge Liao, Jiangfeng Song, Gong Chen, Hua Zhao, Shengkun Tong, Jun Zhou, Bin Jiang, Junyao Xu, Fusheng Pan
Summary: Mg-10Gd-3Y-0.5Zr alloy castings show great potential for aerospace applications due to their excellent tensile and creep properties. The hot tearing behavior of these alloys, which is an important characteristic for engineering applications, is investigated in this study through the addition of minor amounts of Ag and Ce. The results show that the addition of Ag and Ce worsens the hot tearing resistance of the alloy, with Ag increasing the susceptible freezing range and coefficient of thermal expansion, and Ce increasing grain size and coefficient of thermal expansion.
INTERNATIONAL JOURNAL OF METALCASTING
(2023)
Article
Materials Science, Multidisciplinary
Tongtong Cao, Yong Zhu, Yuyang Gao, Yan Yang, Gang Zhou, Xiaofei Cui, Chen Wen, Bin Jiang, Xiaodong Peng, Fusheng Pan
Summary: The microstructure of the Mg-Li-Zn-Mn alloy was refined and precipitates were uniformly distributed through hot extrusion. The as-extruded alloy exhibited improved mechanical properties, including higher yield strength, ultimate tensile strength, and elongation. Both the as-extruded and as-cast alloys showed superior damping capacities.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Xiaoying Qian, Yuyang Gao, Zhihua Dong, Bin Jiang, Chao He, Cuihong Wang, Ang Zhang, Baoqing Yang, Changyong Zheng, Fusheng Pan
Summary: The micro addition of Ca effectively increases the strength and ductility of Mg-Zn-Ce alloy by enhancing alloying segregation at grain boundary. The addition of Ca leads to enhanced Zn segregation and co-segregation of Zn, Ce, and Ca. This is attributed to the decreased segregation energy and promoted diffusion process of Zn by Ca, which accelerates the thermodynamic and kinetic process of segregation. The controllable segregation at grain boundary, induced by Ca, contributes to the development of advanced magnesium alloys by stabilizing grain boundary, refining grain size, inhibiting dislocation mobility, improving strength, and enhancing grain boundary cohesion and ductility.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
Lintao Liu, Shengwen Bai, Bin Jiang, Chao He, Qinghang Wang, Jianxin Zhou, Liping Wei, Xiaoying Qian, Zhihua Dong, Guangsheng Huang, Dingfei Zhang, Fusheng Pan
Summary: In this study, a novel alloy designing concept is proposed to prepare a Mg alloy with excellent strength-ductility synergy by refining grain size and depressing intergranular deformation simultaneously. Through extrusion at 220 degrees C, an ultrafine microstructure is achieved in the basic alloy, Mg-1Sb-1Mn (SM11). The co-addition of Sn and Zn is then conducted to inhibit intergranular deformation and improve the mechanical properties of the alloy. The results show that the strength of the extruded Mg-1Sb-1Mn-1Sn-0.2Zn (SMTZ1110) alloy is significantly improved while maintaining a high ductility, suggesting a promising approach for the development of Mg alloys with a balanced strength-ductility combination.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
Jianxin Zhou, Hong Yang, Bin Jiang, Chao He, Zhihua Dong, Lintao Liu, Xiaojun Luo, Ying Liu, Dehui Huang, Junyao Xu, Guangsheng Huang, Dingfei Zhang, Fusheng Pan
Summary: The mechanical properties of the GWZ1152 alloy, including ultimate tensile strength, were systematically studied at both room and high temperatures. It exhibited excellent strength at room temperature and maintained relatively high strength as the temperature increased. The outstanding heat resistance can be attributed to various factors, such as fine grain structures, certain phases, and nano-scale precipitates in the alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Metallurgy & Metallurgical Engineering
Chunquan Liu, Xianhua Chen, Yulong Wu, Yaobo Hu, Wei Zhang, Yusheng Zhang, Jingying Bai, Fusheng Pan
Summary: A gradient ultrafine-grained (UFG) Mg-2Gd-0.4Zr alloy sheet with a UFG layer of about 118 nm on the surface was fabricated using sliding friction treatment (SFT). The SFT-processed UFG surface layer exhibited significantly improved corrosion resistance compared to the original coarse-grained (CG) structure, showing higher impedance and lower corrosion rate.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2023)
Article
Chemistry, Analytical
Liang Fu, Guangsheng Huang, Yaobo Hu, Xianhua Chen, Jingfeng Wang, Fusheng Pan
Summary: A new strategy using N2O as a reaction gas for the simultaneous determination of nonmetallic impurity elements in high-purity magnesium alloys by ICP-MS/MS was proposed. Through O-atom and N-atom transfer reactions, spectral interferences were eliminated and higher sensitivity and lower LODs were achieved compared to other reaction modes. The accuracy of the method was evaluated and it showed consistent results with SF-ICP-MS. This study provides a systematic method for precise quantification of impurity elements and can be applied to other fields.
ANALYTICAL CHEMISTRY
(2023)
Article
Thermodynamics
Li Yang, Yuan Yuan, Qin Li, Jiajia Wu, Tao Chen, Jun Wang, Xiaojing Zuo, Aitao Tang, Lijun Zhang, Nele Moelans, Fusheng Pan
Summary: In this study, diffusion couples of Mg-Sn-Zn/hcp-Mg, Mg-Zn/Mg-Sn, and Mg-X (X = Sn or Zn)/hcp-Mg were assembled to determine the interdiffusion coefficients of Mg-X (X = Sn or Zn) binary systems and Mg-Sn-Zn ternary system. The kinetic description of the hcp-Mg phase in the Mg-Sn-Zn system was constructed. The features of interdiffusion coefficients of different elements were discussed.
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Chunquan Liu, Xianhua Chen, Domonkos Tolnai, Yaobo Hu, Wei Zhang, Yusheng Zhang, Fusheng Pan
Summary: A remarkable annealing hardening effect was observed in gradient ultrafine-grained Mg-0.32Gd-0.11Zr (at.%) alloy sheet fabricated by sliding friction treatment. The annealed ultrafine-grained structure showed a higher hardening response than the annealed coarse-grained structure. The segregation of solute Gd atoms along grain boundaries and around defects contributed to the significant segregation hardening effect.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
H. Zhou, Z. Ding, Y. A. Chen, Z. Q. Lan, S. F. Guo, F. Spieckermann, V. Zadorozhnyy, J. Tan, F. S. Pan, J. Eckert
Summary: The hydrogen storage properties of amorphous and crystalline Mg85Ni5Y10 alloys were compared, and the melt-spun alloy showed higher storage capacity and faster kinetics than the induction-melted alloy. The reversible storage capacity of the melt-spun alloy was 4.2 wt% H2, while the induction-melted sample had 3.8 wt% at 200 degrees C. Furthermore, the melt-spun alloy could release 4.1 wt% H2 within 30 min at temperatures above 275 degrees C, close to its theoretical hydrogen storage capacity of 4.2 wt%.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Review
Electrochemistry
Rong Li, Rongrui Deng, Zhongting Wang, Yumei Wang, Guangsheng Huang, Jingfeng Wang, Fusheng Pan
Summary: From the perspective of future development trend, it is crucial to develop new batteries that are environmentally friendly. Solid-state electrolytes, which have high conductivity, stability, and compatibility, are considered as the key components for the next-generation rechargeable batteries. This paper provides a comprehensive review on the recent progress in solid-state electrolytes for multivalent-ion batteries, focusing on magnesium-ion, calcium-ion, zinc-ion, and aluminum-ion batteries. All-solid-state batteries have emerged as a rising star due to their ability to solve the problems faced by current lithium-ion batteries and achieve the best balance between battery life, safety, and cost.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2023)
Article
Chemistry, Physical
Jin Wang, Zhixiao Liu, Baihua Qu, Zhipeng Li, Yiming Zhang, Chunliu Xu, Zhao Chen, Qingshui Xie, Ming-Sheng Wang, Miao Lu, Junmei Zhao, Jingfeng Wang, Dong-Liang Peng, Fusheng Pan, Yong-Sheng Hu
Summary: By constructing an ionic-electronic dual-conducting interlayer with abundant N-sites on the Na metal anode, the stability of the electrode/electrolyte interaction is improved, resulting in prolonged cycling lifespan and enhanced electrochemical performance of Na-based batteries.
ENERGY STORAGE MATERIALS
(2023)
Article
Chemistry, Physical
Chunfeng Chen, Jinlong Chen, Shuangshuang Tan, Xueting Huang, Yaoyao Du, Bo Shang, Baihua Qu, Guangsheng Huang, Xiaoyuan Zhou, Jingfeng Wang, Lingjie Li, Fusheng Pan
Summary: In this study, a tris(2,2,2-trifluoroethyl) borate (B(Otfe)3) co-solvent is introduced into the magnesium-aluminum-chloride complex electrolyte to improve the electrolyte solvation sheath and solid electrolyte interphase (SEI) structure. The B(Otfe)3-modified solvation structure increases the concentration of active cation, improving the ionic conductivity and area current density. Meanwhile, the B(Otfe)3-modified solvation ions induce the formation of a more stable SEI, reducing the interfacial transfer impedance. The resulting electrolyte shows excellent electrochemical performance and compatibility with different cathodes.
ENERGY STORAGE MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Lunchao Zhang, Yuan Yuan, Jun Wang, Tao Chen, Jingfeng Wang, Fusheng Pan
Summary: High temperature heat treatment Mg-0.69Sn-0.69Y alloy exhibited a high damping capacity (0.201 at epsilon=1 x 10-3) and a very low critical strain amplitude at room temperature (epsilon cr1=2.97 x 10-5), which can be ascribed to the combined effects of purified matrix phase and subgrain interfaces. The substructure is unstable and the damping capacity decreases with temperature increment.
SCRIPTA MATERIALIA
(2023)
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)
