Article
Chemistry, Physical
Junqing Guo, Wanting Sun, Nan Xiang, Fuxiao Chen
Summary: The interfacial bonding and fracture behavior of an ARB-processed AZ63 sheet were studied through electron microscopic analysis. The average grain size of AZ63 Mg alloy processed by ARB was refined from 12.8 μm to 5.7 μm indicating the occurrence of dynamic recrystallization. The microstructure became more uniform with increasing ARB passes, but the further refinement of grain size was inhibited due to the generation of a coherent eutectic plane at the interface.
Article
Materials Science, Multidisciplinary
J. Q. Wang, L. S. Jiao, T. Cao, J. H. Li, D. L. Cui, Y. Q. Chen
Summary: The influence of annealing time on the recrystallization evolution and mechanical behavior of Zr702 alloy obtained by accumulative roll bonding (ARB) has been investigated. Results show that with the increase of annealing time, the bonding degree of the ARB interface gradually improves due to increased diffusion driving force. Almost complete recrystallization and excellent mechanical properties can be achieved with an annealing time of 20 min, and the evolution path of the microstructure with annealing time can be described.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Nanoscience & Nanotechnology
Runrun Xu, Ningning Liang, Limin Zhuang, Dajie Wei, Yonghao Zhao
Summary: This study presents a method to fabricate Al/Cu laminated composites with improved strength and ductility through accumulative roll bonding (ARB) and intermediate annealing. The ARB process decreases layer thicknesses and grain sizes, improving Vickers micro-hardness, while intermediate annealing significantly enhances tensile strength and elongation properties by improving interfacial metallurgical bonding and continuity of layers.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Luming Zeng, Longfei Zeng, Weirong Li, Tongxiang Liang
Summary: The strategy of designing heterogeneous structures has become a new tool to solve the trade-off between strength and ductility in metallic materials. However, there is still a lack of methods to reproducibly synthesize heterostructured materials with effective microstructural control. This study proposes a highly reproducible method based on conventional accumulative roll bonding (ARB) and postannealing to design heterostructured Cu samples with precisely defined heterogeneous lamellar structure (HLS), enabling accurate control of the size, volume fraction, and spatial distribution of coarse and fine grains. An optimal heterogeneous lamellar microstructure is discovered, which exhibits roughly 3 times higher yield strength than coarse-grained Cu and good tensile ductility of approximately 34.7% total elongation. Experimental observations show that the unique HLS induces strong heterodeformation-induced hardening and promotes dislocation accumulation, resulting in the observed exceptional strength-ductility synergy. This novel fabrication method is applicable to a considerably larger number of metal systems and can be used to further optimize the mechanical properties of metals.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Metallurgy & Metallurgical Engineering
H. R. Lin, Y. Z. Tian, S. J. Sun, Z. F. Zhang
Summary: Nanostructured Cu-/Al-laminated composites were processed using the ARB technique for four cycles, revealing microstructural evolutions and interfacial reactions. Recovery and recrystallization occurred in the Cu and Al layers at low annealing temperatures, with the formation of three kinds of intermetallic compounds near the interfaces. The mechanical properties after annealing were investigated through tensile tests, and the strength-ductility synergy was comprehensively discussed considering the roles of constituent materials and intermetallic compounds.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2021)
Article
Chemistry, Physical
Sasan Sattarpanah Karganroudi, Bahman Hatami Nasab, Davood Rahmatabadi, Mina Ahmadi, Mohammad Delshad Gholami, Mehdi Kasaeian-Naeini, Ramin Hashemi, Ahmad Aminzadeh, Hussein Ibrahim
Summary: The study conducted comprehensive investigations on Al1050 sheets processed with ARB technique, showing significant improvements in elongation and tensile strength after five ARB passes, with a 1.8 times increase in hardness. Fractography tests and XRD analysis were used to study the fracture mechanism and texture changes, revealing the enhancement of anisotropy after ARB treatment.
Article
Materials Science, Multidisciplinary
Xinda Sun, Xiaojie Hao, Jinfeng Nie, Yong Fan, Yuyao Chen, Sida Liu, Xiangfa Liu, Yonghao Zhao
Summary: In this study, a heterostructured Al-AlN/Al-Mg laminated composite was successfully prepared and its microstructural evolution and mechanical properties were investigated. The results showed that the distribution of AlN particles was optimized to avoid stress concentration and the matrix grains were refined significantly. The composite exhibited enhanced tensile strength and ductility at low temperature due to the hetero-deformation induced stress.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Nanoscience & Nanotechnology
Huajie Wu, Feng Zhong, Ruizhi Wu, Yang Wang, Dan Wang, Xiaochun Ma, Siyuan Jin, Shun Zhang, Legan Hou, Jinghuai Zhang
Summary: In this study, alpha/beta alternative Mg-Li composite sheets with different initial thickness ratio of alpha to beta (H) were prepared using accumulative roll-bonding (ARB). The hard layer necking, microstructure evolution, and strain hardening sequence of the alpha/beta alloys in the composite sheets during the ARB process were investigated. The results showed that increasing H can alleviate the necking of the LA51 layer and refine the grains of the two alloys. With the increase of ARB passes and H, the strength of the composite sheets first increased and then decreased, while the plasticity decreased first and then increased.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
H. Parvin, M. Kazeminezhad
Summary: The strength evolution of metal matrix composite during processing/cycling via accumulative roll bonding (ARB) is analyzed using a twofold model. The evolution consists of monolithic-like behavior and composite-like behavior, with each behavior making a different contribution. Particle effectiveness is lowest at the beginning of the cycling process and reaches its highest value during the later cycles. The onset of declining monolithic-like behavior is observed at a critical strain, and there is a minimum strain at which composite-like behavior dominates.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Huajie Wu, Yang Wang, Ruizhi Wu, Feng Zhong, Dan Wang, Legan Hou, Jinghuai Zhang
Summary: Alternative alpha/beta Mg-Li composite sheets with a bimodal-grained structure were prepared by accumulative roll bonding (ARB). The sheets exhibit a balance between dislocation accumulation and annihilation, leading to preferable strength and plasticity after 3-pass ARB process. The strain hardening rate gradually increases at low stress in the ARB composite sheets, which remain highly ductile due to the synergistic effect of bimodal grain structure and activation of non-basal texture.
METALS AND MATERIALS INTERNATIONAL
(2022)
Article
Engineering, Manufacturing
A. Farokhpey, M. H. Parsa
Summary: This article investigates the geometry of the prevailing velocity field in the deformation zone of simple rolling and accumulative roll bonding (ARB) samples through experimental tests and finite element simulation. It is found that the rotational triangle velocity field can be detected in both SR and ARB samples, and the surface discontinuities in ARB samples affect the geometry of velocity field. The results suggest the presence of an angular velocity field with a discontinuity at the ARB strip interfaces.
JOURNAL OF MANUFACTURING PROCESSES
(2022)
Article
Materials Science, Multidisciplinary
S. Karami, B. Piroozi, E. Borhani
Summary: In this study, the fatigue and cyclic deformation behavior of ultrafine-grained pure aluminum AA1100 product by accumulative roll bonding (ARB) process under stress-controlled in the presence of mean stress were investigated. The tensile properties of the material were improved due to grain refinement caused by severe strain imposed during seven cycles of the ARB process. The fatigue life was found to depend greatly on the ARB cycle, showing an increase with the increasing cycle. TEM observations revealed the microstructural evolution induced by fatigue, with dense dislocation patterns recovering and transforming during cyclic deformation.
MATERIALS CHARACTERIZATION
(2023)
Article
Engineering, Multidisciplinary
Tao Meng, Kanjun Ying, Haiying Yu, Yongpeng Hong
Summary: The modification effect of nanomaterials on the interfacial transition zone (ITZ) was investigated in this study, by determining the bonding strength, nanoindentation value, layered mineral composition, and microstructure of the interface. The results showed that nanomaterials significantly improved the bonding strength of concrete specimens by regulating the phase and deagglomeration of hydration products. However, different nanomaterials had different modification effects, with nano silica being the most effective.
COMPOSITES PART B-ENGINEERING
(2022)
Review
Materials Science, Multidisciplinary
Mahmoud Ebrahimi, Qudong Wang
Summary: Accumulative roll-bonding (ARB) is a suitable severe plastic deformation technique that has significant impact in both scientific and industrial fields. This review paper focuses on the ARB method, its newly developed techniques, and the production and properties of multi-component and composite materials.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Metallurgy & Metallurgical Engineering
Qing-lin Du, Chang Li, Xiao-hui Cui, Charlie Kong, Hai-liang Yu
Summary: Ultrafine-grained AA1060 sheets were fabricated via five-cycle accumulative roll bonding (ARB) and subsequent three-pass cold rolling or cryorolling, leading to further grain refinement. Lower rolling temperatures resulted in finer grain sizes, with cryorolled sheets exhibiting higher strength and ductility compared to cold-rolled sheets.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2021)
Article
Chemistry, Physical
Tianlu Chen, Meng Sun, Rui Liu, Weibin Jiang, Xuebang Wu, Xianping Wang, Changsong Liu, Qianfeng Fang
Summary: The recrystallization process in deformed high-purity aluminum was investigated using internal friction and hardness measurement. It was found that the P-1 peak, a non-relaxational peak, can be attributed to the recrystallization process with an activation energy of 57 +/- 3 kJ/mol. The classical isothermal recrystallization temperature can be determined by adjusting the heating rate from the peak temperature of the P-1 peak.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
L. Li, Y. X. Gao, M. Sun, K. Jing, Z. Zhuang, X. P. Wang, W. B. Jiang, Q. F. Fang
Summary: The research systematically investigated the effect of phase composition on internal friction and magnetostriction in Fe-27Ga alloys, finding that the proportion of L12 phase can be controlled by adjusting the annealing temperature and holding time. The study provides a design concept for high damping Fe-Ga alloys to meet specific requirements in different application fields.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Hui Wang, Zhuoming Xie, Xiang Cheng, Ke Jing, Linchao Zhang, Junfeng Yang, Rui Liu, Le Han, Lei Cao, Xianping Wang, Qianfeng Fang, Changsong Liu, Xuebang Wu
Summary: The microstructural evolution and thermal fatigue resistance of two tungsten composites, WZC and WYO, were investigated under cyclic heat loads. The WZC composite showed better thermal shock resistance than WYO due to the intrinsic properties of the particles. The study also revealed an interesting crack mechanism in tungsten composites. These findings are important for evaluating the thermal fatigue resistance of composites and their application in fusion reactors.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Nuclear Science & Technology
Yongkui Wang, Xiaochen Huang, Jiafeng Zhou, Jun Fang, Yan Gao, Jinlong Ge, Shu Miao, Zhuoming Xie
Summary: In this study, pure W and W-0.5wt%HfC alloy (WHC05) were prepared using the same processing route of sintering and hot-rolling. The evolution of surface morphology, deuterium retention, and hardening behaviors in pure W and WHC05 after exposure to high flux deuterium plasma irradiation were investigated. SEM results showed the formation of D blisters on the irradiated area, with the size of these blisters increasing with the increase of D implantation in both WHC05 and pure W. Higher D retention and significant hardening were observed in pure W compared to WHC05, indicating improved radiation resistance in WHC05.
NUCLEAR ENGINEERING AND TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Yange Zhang, Xiangyan Li, Yichun Xu, Yawei Lei, Zhuoming Xie, Xianping Wang, Qianfeng Fang, Changsong Liu, Xuebang Wu
Summary: This work investigates the role of coherent and semi-coherent interfaces between W and ZrC on hydrogen trapping, desorption, and clustering in nanostructured W alloys. The study finds that pure interfaces have comparable trapping abilities with intrinsic defects in bulk W, while interfaces with W/C vacancies show stronger trapping capabilities, especially for semi-coherent interfaces. The strong traps of vacancy-containing phase interfaces effectively absorb hydrogen and prevent hydrogen-induced damage. This work provides insights into the atomic-level understanding of hydrogen trapping and clustering at phase interfaces, offering explanations for experimental observations and suggesting a feasible route for interface engineering against hydrogen-induced damage in structural metals.
Article
Nanoscience & Nanotechnology
X. F. Xie, Yange Zhang, Z. M. Xie, X. Cheng, R. Liu, Q. F. Fang, C. S. Liu, Xuebang Wu
Summary: In this study, the structure and atomic bonding of the TiC/W interface were investigated through high-resolution TEM observation and ab initio calculation. It was found that strong covalent bonding and a low-energy semi-coherent interface were the key factors for the high stability and refinement of TiC particles (approximately 29 nm), which significantly strengthened the W material. This research highlights the importance of interface bonding and stability in achieving high strength in metallic materials and provides insights for the development of high-performance metallic materials through interface structure and atomic bonding regulation.
SCRIPTA MATERIALIA
(2023)
Article
Chemistry, Physical
Y. Jiang, X. G. Wang, Z. Q. Jiang, M. Chen, M. Sun, X. F. Zhang
Summary: This study analyzes the crystal structure, microstructure, and mechanical performance of TiVZr-Nbx alloys to investigate the transformation from a ternary alloy to a quaternary alloy. The use of high-performance and lightweight materials is crucial for the aerospace industry's technological advancements.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Xueqing Liu, Meng Sun, Ting Hao, Weibin Jiang, Xianping Wang, Qianfeng Fang
Summary: The interaction between C atoms and Mn/Ni/Si atoms during aging in reactor pressure vessel (RPV) steels was investigated using the internal friction technique. Two Snoek peaks were detected: one is a superposition of the Snoek relaxation in Fe-C-Fe and the Snoek relaxation in Fe-C-Mn, and the other is the Snoek relaxation in Fe-C-Ni(Si). It was observed that with increasing aging time, C atoms first combine with substitutional solute atoms and then co-precipitate as MnSiC clusters at the grain boundaries after 20 hours aging at 600 degrees C. The variation of the Snoek peak with aging time provides a reliable method for non-destructively detecting the aggregation and precipitation of Mn/Ni/Si-rich phases in RPV steels.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Yawei Lei, Yange Zhang, Xiangyan Li, Yichun Xu, Xuebang Wu, Xianping Wang, Meng Sun, Junfeng Yang, Changsong Liu, Zhiguang Wang
Summary: Oxygen control technology is an effective method to resist the dissolution corrosion of liquid metals. First-principles calculations were used to investigate the mechanism of resistance to dissolution corrosion by oxygen. The results show that oxygen atoms prevent the adsorption of lead and bismuth atoms and the escape of iron atoms. The bonding between oxygen and lead atoms is strengthened, and the coverage of liquid metals weakens the bond between iron and oxygen atoms.
JOURNAL OF NUCLEAR MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
G. J. Zhang, Q. G. Zhang, X. G. Wang, M. Sun, J. F. Yang, T. Hao, G. Li, H. Wang, J. G. Liu, Q. F. Fang, X. P. Wang
Summary: In this study, a newly developed equal channel angular pressing (ECAP) route BC-UD2 was used to extrude Fe9Cr1.5W0.7Si ferrite/martensitic steel, and the effect of microstructural evolution on the internal friction (IF) behavior was systematically investigated. The microstructural characterization revealed a transformation from an initial ferrite/martensitic structure to a fine laminar structure with a roughly 45 degree inclination to the extrusion direction (ED), accompanied by the evolution of texture. The dissolution of M23C6 and MX phases after extrusion led to a decrease in the Zener-Smith dragging force. The correlation between microstructure characterization results and IF behavior demonstrated the accuracy and reliability of the IF technique for studying the recrystallization behavior of structural materials in nuclear reactors.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2023)
Article
Crystallography
Guangjie Zhang, Junfeng Yang, Zhuoming Xie, Linchao Zhang, Rui Liu, Meng Sun, Gang Li, Hui Wang, Yi Hu, Xuebang Wu, Qianfeng Fang, Changsong Liu, Xianping Wang
Summary: Two different Si concentrations of ferrite/martensitic (F/M) steels were irradiated with high-energy He2+ ions, where the addition of Si was found to inhibit the growth of He bubbles, leading to smaller size and higher density of He bubbles. The presence of Si also increased the number density of dislocation loops, exacerbating the irradiation hardening effect.
Article
Materials Science, Multidisciplinary
T. Zhang, H. W. Deng, Z. M. Xie, Y. W. Zhuang, S. Y. Peng, G. Hu, H. Lin
Summary: This paper achieves high thermal and irradiation stability in a representative NC W alloy through nano-segregation and in-situ formation of nano particles. This work opens up new possibilities for the preparation of high-stability nanocrystalline materials.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Lin-Chao Zhang, Ke Jing, Rui Liu, Zhuo-Ming Xie, Jun-Feng Yang, Gang Li, Xian-Ping Wang, Xue-Bang Wu, Qian-Feng Fang, Chang-Song Liu
Summary: In this study, liquid paraffin was used as an additive to improve the homogeneity of W-YSZ cermet. Cermet wafers with a relative density of 97.6% were fabricated, and the sample with 2 wt. % paraffin showed the highest homogeneity and best comprehensive properties. These results are beneficial for the design and optimization of cermet fuels in nuclear thermal propulsion.
Article
Materials Science, Multidisciplinary
Xiang Cheng, Zhuo-Ming Xie, Xue-Feng Xie, Long-Fei Zeng, Rui Liu, Jun-Feng Yang, Xue-Bang Wu, Xian-Ping Wang, Chang-Song Liu, Qiang-Feng Fang
Summary: Hot-swaging can produce a high ultimate tensile strength of 712 MPa, but with limited tensile ductility (3.6% elongation) at a testing temperature of 200 degrees C in a representative W-0.5wt.%ZrC alloy. Through post-annealing around 1300 degrees C, an outstanding tensile ductility was achieved at 200 degrees C, with a uniform elongation of 14% and total elongation of approximately 25%, without sacrificing its strength. The improved low-temperature ductility was attributed to the reduction of residual dislocations and dislocation tanglement, which provided more room to accommodate dislocations, resulting in stronger strain hardening ability and tensile ductility.
Article
Chemistry, Physical
X. Q. Liu, M. Sun, J. X. Liu, X. G. Wang, Y. B. Ke, W. B. Jiang, Y. X. Gao, X. P. Wang, Q. F. Fang
Summary: This study reports new ferromagnetic high damping materials of FeGaMo alloys with different Mo contents. Among these alloys, the alloy with 2 at% Mo content exhibits the best damping capacity. As the Mo content increases, the precipitation of Mo-rich phases restricts the movement distance of domain walls, leading to a decrease in damping. This work provides valuable insights for the design and research of new ferromagnetic high damping materials in the future.
JOURNAL OF ALLOYS AND COMPOUNDS
(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)
