Article
Nanoscience & Nanotechnology
Umer Masood Chaudry, Yeonju Noh, Gukin Han, Russlan Jaafreh, Tea-Sung Jun, Kotiba Hamad
Summary: This study investigates the effects of CaO additions on the microstructure, texture, and mechanical properties of AZ61 magnesium alloy. The addition of CaO leads to the formation of Ca-rich intermetallic compounds and influences the evolution of the alloy's structure. Additionally, the alloys containing CaO exhibit twined structures, with an increased fraction of tension twins as the amount of CaO increases.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Chemistry, Physical
Jiri Kubasek, Jan Pinc, Klara Hosova, Marketa Strakova, Orsolya Molnarova, Jan Duchon, David Necas, Miroslav Cavojskyc, Michal Knapek, Matjaz Godec, Irena Paulin, Dalibor Vojtech, Jaroslav Capek
Summary: This paper investigates the effects of extrusion temperature and ratio on the microstructure and mechanical properties of Zn-0.8Mg-0.2Sr alloy. The results show that the grain size, material texture, and dislocation substructures have a significant influence on the alloy's elongation range and anisotropy. Under appropriate extrusion conditions, the alloy's mechanical properties can be greatly improved.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Joung Sik Suh, Byeong-Chan Suh, Jae Ok Choi, Young Min Kim, Bong Sun You
Summary: This study investigates the effect of extrusion temperature on room temperature tensile properties of as-extruded AZ91 plates regarding microstructure and texture development. The research reveals that, contrary to expectations, yield strength increases with extrusion temperature despite an increase in grain size. Stronger basal texture was found to play a dominant role in increasing yield strength.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Ming Gao, Zheng Ma, Iniobong P. Etim, Li-Li Tan, Ke Yang
Summary: The study aimed to investigate the influence of microstructural evolution on mechanical and corrosion properties of Mg-2Zn-0.5Nd alloy during room-temperature drawing, and found that grain refinement and texture transformation significantly affected the mechanical and corrosion resistance of the alloy.
Article
Nanoscience & Nanotechnology
Chao Meng, Juntao Yang, Zhengqiang Zhang, Jianlin Yang, Weibin Zhuang, Xuelei Wang, Xin Ren, Shizhen Bai, Yongheng Jiang
Summary: The study showed that laser bionic treatment can effectively improve the mechanical properties of TIG welded magnesium alloy joints by refining grain size and adjusting crystal orientations.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Metallurgy & Metallurgical Engineering
Suming Zhu, Trevor B. Abbott, Jian-Feng Nie, Hua Qian Ang, Dong Qiu, Kazuhiro Nogita, Mark A. Easton
Summary: The re-evaluation of magnesium die-casting alloy AE44 with minor Mn addition shows that T5-aged AE44 exhibits a better strength-ductility combination and improved creep resistance. The findings suggest that precipitation hardening of the alpha-Mg matrix plays a more important role than grain boundary reinforcement by intermetallic phases in enhancing the creep resistance of die-cast Mg alloys. These results could open up new application perspectives for AE44, particularly in the automotive industry.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Chemistry, Physical
Qiang Yang, Xiaohan Wu, Wei Zhang, Zixaing Yan, Guodong Tong, Xuegang Chen, Shuhui Lv, Tao Xu, Jun Li, Xin Qiu
Summary: An ultrathin wall Mg-8Zn-8Al alloy with coarse ix-Mg grains, ultra-fine beta-Mg grains, and nano-sized icosahedral quasicrystal phase particles has been manufactured by high-pressure die casting. The alloy exhibits outstanding strength and acceptable elongation. The observations through HAADF-STEM reveal possible amorphous regions, C-containing phase and/or MgO aggregations, and Zn-rich clusters and pyramidal precipitates. The combination of ultra-fine grains and the skeleton consisting of nano-sized I-phase particles and solutes contributes to the ultra-high strength. In addition, the study indicates the unavoidable interaction of alloy melt with CO2 during ultra-thin wall HPDC and the possibility of pyramidal precipitation in Zn-containing magnesium alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Metallurgy & Metallurgical Engineering
Min-jie Liang, Jie Zheng, Huan Liu, Bao-xing Yao
Summary: This study investigates the microstructure, texture evolution, and mechanical properties of AZ31 magnesium alloy during the cyclic expansion extrusion with the asymmetrical extrusion cavity (CEE-AEC) process. The results show that after 3 passes, the microstructures are refined and the textures are deflected, leading to significant improvements in the mechanical properties of the alloy.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2022)
Article
Nanoscience & Nanotechnology
Lei Liu, Naiguang Wang, Yunfeng Liu, Chuming Liu
Summary: A large-size AZ80-Ag magnesium alloy support beam was fabricated via isothermal semi-closed die forging (ISDF). Its microstructure features and mechanical properties with or without subsequent aging were systematically characterized. The results indicate that the ISDF at 400 degrees C creates strong basal texture and leads to an obvious mechanical anisotropy between the height direction (HD) and transverse direction (TD). Subsequent aging at 175 degrees C can promote the discontinuous or continuous precipitation of 13-Mg17Al12 phases without changing the texture mode, whilst the mechanical anisotropy is significantly weakened as the difference in yield strength between TD and HD decreases from 71 MPa to 6 MPa after aging for 12 h. Such aging-induced anisotropy-weakening effect results from the fact that the HD is a soft direction for basal slip and the precipitate-strengthening related to 13-Mg17Al12 is more significant in this direction.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Lingyun Feng, Xixi Dong, Mingxu Xia, Xiangzhen Zhu, Gang Ji, Hailin Yang, Bin Wang, Eric A. Nyberg, Shouxun Ji
Summary: A novel high thermal conductivity (TC) and cost-effective die-cast Mg2.8Al3.8-La0.4Nd alloy with enhanced yield strength (YS) was developed. Compared with the commercially widely used AE44 magnesium alloy, the new alloy exhibited improved TC by 13.5% and enhanced YS through the formation of Al-based intermetallic phases at grain boundaries.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Xiaohan Wu, Qiang Yang, Tao Xu, Jinghuai Zhang, Pengyue Wang, Chenggang Wang, Wei Sun, Xin Qiu
Summary: The effects of 3 wt% RE addition on the microstructures and mechanical properties of a high-pressure die casting Mg-8Zn-6Al (ZA86) alloy before and after aging treatment were thoroughly studied. The addition of RE did not significantly affect the dendrite structure and grain size, but introduced Al-RE intermetallic phases. The volume fraction of Mg-Al-Zn ternary phases was reduced by RE addition. Aging treatment resulted in the increase of precipitates' volume fraction and size, as well as the improvement of the yield strength of the ZA86 alloy.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Peng-Fei Qin, Qiang Yang, Yu-Ying He, Jing-Huai Zhang, Jin-Shu Xie, Xi-Ru Hua, Kai Guan, Jian Meng
Summary: The new high-pressure die-cast (HPDC) Mg-4Al-3La-1Ca-0.3Mn (ALaX431) alloy achieves higher strength than existing HPDC Mg alloys, mainly due to the formation of fine grained structure, semi-continuous reticular structure, and nanoscale precipitates. Consequently, it has great potential for wide application.
Article
Materials Science, Multidisciplinary
Zhe Liu, Zhiyu Fan, Li Liu, Shu Miao, Zhicheng Lin, Chungui Wang, Yunqiang Zhao, Renlong Xin, Chunlin Dong
Summary: In this study, 1 mm-thick AZ31 magnesium alloy sheets were joined by refill friction stir spot welding. The metallurgical features, microstructure, texture, and mechanical response of the spot-welded joints were investigated, and the effect of welding parameters on joint performance was evaluated. The results showed that the highest lap shear strength was achieved with a rotational speed of 1500 rpm and a plunge depth of 1.4 mm. A fine-grain structure was observed in the stir zone, and the grain size decreased with lower rotational speed and plunge depth. Furthermore, strain localization was observed during tensile deformation in the spot weld, and the mechanism behind this phenomenon was discussed.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
Hong Xu, Zhi-Peng Guo, Ping-Yu Zhang, You Zhou, Pin-Kui Ma
Summary: The study revealed that the refinement of microstructure in Mg-6Al-1Zn-0.9Sn alloy processed by ECAP is highly dependent on the processing temperature, mainly due to the precipitation of secondary-phase particles. The formation of a 45 degrees texture during the ECAP process significantly influences grain boundary strengthening and yield strength.
Article
Nanoscience & Nanotechnology
Zhirou Zhang, Qinghuan Huo, Zhenyu Xiao, Yuxiu Zhang, Aki Hashimoto, Xuyue Yang
Summary: The study proposed a practical method for optimizing the mechanical properties of Mg-4Y-2Nd-0.2Zn-0.5Zr alloy by combining interrupted compression with intermediate annealing, resulting in the formation of deformation bands triggered by the intermediate annealing and a higher volume fraction of ultra-fine grains in the final IC sample compared to the CC sample.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Multidisciplinary
Meidi Wang, Yutong Wang, Junyi Zhao, Jiyu Zou, Xu Liang, Ziting Zhu, Jiashi Zhu, Hongjian Wang, Yuhan Wang, Fusheng Pan, Zhongyi Jiang
Summary: Here, an electrochemical interfacial polymerization strategy was used to fabricate ultrathin COF membranes with a thickness of 85 nm by actively manipulating the self-healing effect and self-inhibiting effect. The resulting COF membrane showed superior performance in brine desalination with a permeation flux of 92 kg m(-2) h(-1) and a rejection of 99.96%. Our electrochemical interfacial polymerization strategy enriches the fabrication approach of COF membranes and facilitates the rational design of ultrathin membranes.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Peng Peng, Jia She, Qingshan Yang, Shuai Long, Aitao Tang, Jianyue Zhang, Qingwei Dai, Fusheng Pan
Summary: A new low-cost and high mechanical strength Mg-0.5Gd-xMn (x = 0, 0.5, 1.0, 1.5, 2.0 wt. %) alloy system was developed by low-temperature extrusion. The alloy exhibited gradually increased yield strength and ultimate tensile strength with the increment of the Mn content. It possessed comparable high mechanical strength with heavy rare-earth content traditional Mg alloys but at a much lower cost.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Manufacturing
Qiang Liu, Ying Liu, Qing Luo, Jiangfeng Song, Biquan Xiao, Bin Jiang, Liangyin Wu, Hua Zhao, Qiuyan Shen, Fusheng Pan
Summary: Low-cost Mg-1Mn-0.5Al (MA10) alloys with good comprehensive strength and ductility have been developed as potential substitutes for commercial AZ31 alloys. The rollability of MA10 alloy sheets in terms of edge cracking behavior was improved by multi-pass online heating rolling at different temperatures. The improvement can be attributed to the more uniform microstructure, higher degree of recrystallization, more homogeneous strain distribution, and increased activation of non-basal slips at the edge.
JOURNAL OF MANUFACTURING PROCESSES
(2023)
Article
Materials Science, Multidisciplinary
Jun Xu, Jun Zhao, Bin Jiang, Wenjun Liu, Hong Yang, Xintao Li, Yuehua Kang, Nan Zhou, Kaihong Zheng, Fusheng Pan
Summary: Mg-3Al-1Zn (AZ31) sheets were produced by transverse gradient extrusion (TGE) process. The microstructures, textures, and mechanical behavior of TGE and conventional extruded (CE) sheets were studied and compared. TGE sheets exhibited finer grain structure, unique textures, and higher ductility compared to CE sheets. Both basal slip and tensile twins were activated during deformation in TGE sheets.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2023)
Article
Chemistry, Physical
Hongju Zhang, Deyu Ding, Meifang Tang, Bo Song, Yubin Niu, Hanwu Dong, Shengfeng Guo, Fusheng Pan
Summary: In this work, the microstructure, corrosion resistance, and discharge properties of the as-extruded Mg-7Li-1Y alloy were studied. The alloy exhibited a bimodal microstructure mainly composed of alpha-Mg and beta-Li phases. Despite poor corrosion resistance, it showed remarkable discharge performance with a discharge voltage of 1.35 V and a high anode utilization rate of 59% at a current density of 10 mA/cm2. The unique morphologies of discharge products and the presence of beta-Li phase contributed to the improved electrochemical activity and discharge performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Cong Dang, Jingfeng Wang, Jinxing Wang, Di Yu, Wenxuan Zheng, Changbing Xu, Zihong Wang, Le Feng, Xianhua Chen, Fusheng Pan
Summary: In this study, a bimodal grain structure consisting of fine recrystallized grains and coarse unrecrystallized grains was obtained by adding Mn into the Mg matrix and using low extruded temperature. The fine recrystallized grains promote grain boundary slip and enhance the alloy's plasticity. The presence of parallel dislocations in the unrecrystallized grains, caused by the suppressed dislocation recovery and dynamic recrystallization rate at low temperature, leads to a high work hardening rate in the bimodal grain structure, resulting in a high yield strength and improved damping capacity at room temperature for Mg-Mn alloys.
Article
Materials Science, Multidisciplinary
Jianxin Zhou, Xiaojun Luo, Hong Yang, Bin Jiang, Wenlong Xie, Zhihua Dong, Jiangfeng Song, Junyao Xu, Guangsheng Huang, Dingfei Zhang, Fusheng Pan
Summary: The microstructural features of GWZ1352 alloys can be tailored by altering the cooling rates. Lower cooling rates result in an increased number and decreased spacing of lamellar long period stacking ordered (LPSO) phase. The excellent high temperature mechanical properties of the furnace-cooling (FE) alloy are mainly attributed to the abundant lamellar LPSO phase.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Yingying Li, Yuan Yuan, Jun Wang, Liang Wu, Fuyong Cao, Ligang Zhang, Fusheng Pan
Summary: The biodegradation behavior and mechanical properties of Mg-Sr-Y alloys were studied, and it was found that the Mg-0.3Sr-0.5Y alloy exhibited low corrosion rate (0.823 mm y(-1)) in Hanks' solution, attributed to the solid solution of Y in α-Mg phase and Mg17Sr2 phase and the formation of a protective film.
NPJ MATERIALS DEGRADATION
(2023)
Article
Metallurgy & Metallurgical Engineering
Hua Zhao, Jiangfeng Song, Jing Wang, Qiang Liu, Gong Chen, Jianfei Xiao, Jin'ge Liao, Hang Teng, Bin Jiang, Fusheng Pan
Summary: In this study, the relationship between semi-solid deformation and hot tearing susceptibility of magnesium alloys was investigated. Tensile experiments were conducted on binary Mg-xCa (x = 0.2, 0.5, and 2 wt%) alloys using a Gleeble 3500 thermal simulator. The linear contraction of the alloys was measured using a novel apparatus based on a constrained rod casting (CRC) hot tearing apparatus. The results showed that the ultimate tensile strength (UTS) and fracture elongation (FE) of the alloys decreased with decreasing solid fraction (increasing test temperature). It was found that Mg-0.5Ca alloy had the highest hot tearing susceptibility, attributed to its extremely low ductility even at a high solid fraction of 0.96 and the highest linear contraction among the three alloys.
INTERNATIONAL JOURNAL OF METALCASTING
(2023)
Article
Nanoscience & Nanotechnology
Junlei Zhang, Yingxing Zhang, Xiang Chen, Zulai Li, Guangsheng Huang, Fusheng Pan
Summary: Two types of welding processes, DS-FSW and SS-FSW, were used for dissimilar welding between AM60 and AZ31 Mg alloys. The microstructure observation indicated that the microstructure of the joint nugget zone (NZ) under both processes was refined after welding and their grain size was relatively close. The tensile tests revealed that the DS-FSW joint exhibited excellent mechanical properties compared with the SS-FSW joint due to its large processing volume, lower volume proportion of the stirring zone, and symmetrically distributed weld zone structure improved the deformation coordination of the joint, thereby delaying its premature fracture and exhibiting better mechanical properties.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
Dongmei Pu, Xianhua Chen, Jingfeng Wang, Jun Tan, Jianbo Li, Hong Yang, Bo Feng, Kaihong Zheng, Fusheng Pan
Summary: TiP/VW94 composites were prepared using semi-solid stirring assisted ultrasonic vibration followed by hot extrusion. The addition of Ti particles promoted the precipitation of lamellar long period stacking ordered structure (LPSO) and inhibited the precipitation of block-shaped LPSO during heat treatment. The tensile properties of TiP/VW94 composites were enhanced by load transfer, grain refinement, dislocation strengthening, and the presence of appropriate content and size of lamellar LPSO and RE-rich phase.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Shiyu Jiang, Li Yang, Yuan Yuan, Ligang Zhang, Jun Wang, Tao Chen, Aitao Tang, Lifeng Ma, Fusheng Pan
Summary: In order to ensure good corrosion resistance and mechanical properties of Mg-Al alloys, it is necessary to strictly control the iron (Fe) impurity. This study investigated the effects of alloying elements and temperatures on the solubilities of Fe in Mg-Al-based alloy melts. It was found that the addition of yttrium (Y) or manganese (Mn) elements could significantly reduce the solubilities of Fe in Mg-xAl (x = 1 and 3 wt.%) alloy melts.
Article
Chemistry, Multidisciplinary
Yuhan Wang, Junyi Zhao, Sui Zhang, Zhiming Zhang, Ziting Zhu, Meidi Wang, Bohui Lyu, Guangwei He, Fusheng Pan, Zhongyi Jiang
Summary: A two-step method for synthesizing COF nanosheets and membranes is proposed. The method involves framework assembly and functional group switching. The fabricated COF membranes demonstrated excellent separation performance.
MATERIALS HORIZONS
(2023)
Article
Chemistry, Physical
Xiaolin Hu, Jichuan Fan, Ronghua Wang, Meng Li, Shikuan Sun, Chaohe Xu, Fusheng Pan
Summary: By combining vacancies and heterogeneous interfacial engineering, three-dimensional core-shell NiCoP/NiO heterostructures with dominated oxygen vacancies have been constructed for efficient electrocatalysis. These materials possess multiple exposed active sites, faster mass transfer behavior, optimized electronic structures, and improved electrochemical performance.
GREEN ENERGY & ENVIRONMENT
(2023)
Article
Materials Science, Multidisciplinary
Luo Yulun, Zhang Dingfei, Hua Jianrong, Dai Qimin, Zhong Shiyu, Xu Junyao, Hu Guangshan, Jiang Bin, Pan Fusheng
Summary: The microstructure and mechanical properties of Mg-2Zn-1Mn-xY (x=0, 1, 3, 5, 7, wt%) alloy were investigated using multiple techniques. The addition of Y element resulted in a transformation of secondary phases and hindered the dynamic recrystallization process, leading to refined grains. However, excessive Y addition did not further refine the grains. The addition of Y element influenced the ductility of the alloy, with an initial increase followed by a decrease, attributed to the combined effect of texture orientation and grain coarsening. The strength enhancement was mainly attributed to grain refinement strengthening and secondary phase strengthening. The Mg-2Zn-1Mn-7Y alloy exhibited optimal mechanical properties with a ultimate tensile strength of 357 MPa, yield strength of 262 MPa, and elongation of 14%.
RARE METAL MATERIALS AND ENGINEERING
(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)
