Article
Nanoscience & Nanotechnology
H. Q. Li, F. L. Shen, H. Guo, R. Zong, X. Y. Fang, L. J. Zhang
Summary: This study explores a novel laser scanning strategy to achieve distinct dense microstructures in alloys through melting scanning and non-melting scanning, resulting in refined grains and the production of ε-martensite, which can effectively tune the mechanical properties.
SCRIPTA MATERIALIA
(2022)
Review
Chemistry, Physical
Yun Zhou, Kai Zhang, Yaru Liang, Jun Cheng, Yilong Dai
Summary: Magnesium and its alloys, known for their low density, high specific strength, and good biocompatibility, hold great potential in biomedicine, transportation, and aerospace. Laser selective melting technology offers advantages such as the ability to manufacture complex parts with high precision. However, the application of magnesium alloys in laser selective melting is less developed due to some of their disadvantages.
Article
Nanoscience & Nanotechnology
Jian Chen, Xingyu Liao, Jingguo Shu, Libo Zhou, Cong Li, Yanjie Ren, Yan Niu
Summary: The study systematically investigated the SLM of Ti-15Mo alloy, particularly focusing on densification, microstructure, and mechanical properties. The samples processed by SLM exhibit a greater combination of high tensile strength and elongation due to the retention of omega phase, high dislocation density, finer grains, twinning-induced plasticity, and changes in texture orientation.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Abdulaziz Kurdi, A. K. Basak
Summary: The mechanical properties and deformation behaviour of SLMed Ti6Al4V alloy are influenced by the microstructure and loading direction, resulting in anisotropy. The alloy exhibits higher yield and ultimate compressive strength compared to mill-annealed alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Yabo Hu, Chaofang Dong, Decheng Kong, Min Ao, Jungang Ding, Xiaoqing Ni, Liang Zhang, Pan Yi, Xiaogang Li
Summary: H2O2 has dual effects on the degradation behavior of biomedical materials depending on its concentration. It can facilitate the formation of a protective passive film at an appropriate concentration, but a high concentration can result in a change in the composition of the film, leading to a loss of protection.
Review
Materials Science, Multidisciplinary
Xinfang Song, Yong Zhang
Summary: HEAs with multi-component characteristics have excellent performance that can be fully utilized by combining SLM technology. SLM-prepared HEAs exhibit complex microstructures, including cellular substructures, precipitates, stacking faults, and nanotwins, which contribute to their excellent mechanical and functional properties. This study also provides useful guidance for the future designs of high-performance HEAs.
SCIENCE CHINA-MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Giovanna Cornacchia, Silvia Cecchel, Davide Battini, Candida Petrogalli, Andrea Avanzini
Summary: The study shows that vacuum heat treatments and hot isostatic pressing have different effects on the properties of SLM CoCrMo alloy, highlighting the importance of selecting the right treatment method to enhance specific mechanical properties.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
W. S. Cai, Y. Luo, A. Yan, L. M. Kang, L. C. Zhang, C. Suryanarayana, C. Yang
Summary: This study successfully fabricated high-strength and high-ductility NiTi alloys by adjusting the process parameters and systematically investigated their microstructure and mechanical properties. By studying the variation of recoverable strain, the optimized process parameters for the fabricated samples were identified.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Zhiguang Zhu, Fern Lan Ng, Hang Li H. Seet, Wenjun Lu, Christian Liebscher, Ziyuan Rao, Dierk Raabe, Sharon Mui Ling Nai
Summary: By utilizing selective laser melting and heat treatment, high-strength AlZnMgCuScZr alloys with an unprecedented strength-ductility synergy were successfully fabricated, paving the way for designing and fine-tuning SLM-produced aluminum engineering components exposed to high mechanical loads.
Article
Materials Science, Multidisciplinary
Xingyu Pan, Chunlei Qiu
Summary: Adding quasi-crystal (QC) powder particles to high entropy alloy (HEA) during selective laser melting (SLM) can enhance the strength of the alloy. The microstructure and tensile properties of the material depend on the input energy density. Optimal energy density can result in a superior microstructure with dispersive columnar gamma grains and arc-shaped B2 phase, while high energy densities can lead to an undesirable grain structure.
Review
Materials Science, Multidisciplinary
Kun Li, Chen Ji, Shengwen Bai, Bin Jiang, Fusheng Pan
Summary: This paper discusses the defect formation mechanisms during the SLM process and summarizes characteristics in terms of mechanical properties, oxidation and corrosion resistance of magnesium alloys. Optimization schemes from both macro and micro perspectives are reviewed, as well as the effects of alloying elements, composite reinforcement, and post-treatment on the microstructure and properties of SLMed magnesium alloys. Finally, future application development prospects are envisaged based on the comprehensive review.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Qiyang Tan, Zhiqi Fan, Xiaoqin Tang, Yu Yin, Gan Li, Danni Huang, Jingqi Zhang, Yingang Liu, Feng Wang, Tao Wu, Xianliang Yang, Han Huang, Qiang Zhu, Ming-Xing Zhang
Summary: The study proposed a novel strategy combining substrate modification and inoculation treatment to successfully fabricate crack-free and dense high-strength 7075 alloy using SLM. This strategy can be implemented for SLM of other engineering alloys, providing a foundation for broadening industrial applications of SLM.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Qiyang Tan, Yu Yin, Zhiqi Fan, Jingqi Zhang, Yingang Liu, Ming-Xing Zhang
Summary: In this study, it was found that adding 0.2-0.5 wt% LaB6 nanoparticles to the selective laser melted AlSi10Mg alloy can significantly refine grain size and homogenize the microstructure, thereby improving the mechanical properties of the alloy. However, increasing the LaB6 addition to 2 wt% did not further refine the grains, but instead weakened the ductility of the alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
D. Pede, M. Li, L. Virovac, T. Poleske, F. Balle, C. Mueller, H. Mozaffari-Jovein
Summary: Selective laser melting enables the production of complex and functional parts from difficult processable materials. This study compares the microstructure and corrosion resistance of novel I3-type titanium alloys with traditional titanium alloys, revealing that the new alloys exhibit superior corrosion resistance.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Min Zheng, Lei Wei, Jing Chen, Qiang Zhang, Guohao Zhang, Xin Lin, Weidong Huang
Summary: This study investigated the development of surface features of Inconel 718 samples fabricated by selective laser melting under different laser powers and scanning speeds. The surface tension was identified as a key factor in the SLM process, pulling melted powder into the molten pool and affecting surface morphology.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Engineering, Manufacturing
Qiqiang Cao, Yuchao Bai, Zhongpeng Zheng, Jiong Zhang, Jerry Ying Hsi Fuh, Hao Wang
Summary: Support removal is a challenging issue in laser powder bed fusion (LPBF), especially when it comes to efficient and safe removal of support structures from thin-walled parts while obtaining high-quality surfaces. This study aims to reveal the mechanism of support removal and propose a solution to improve the machinability of supports. The results show that cutting forces increase gradually with each cut due to the tilting and collapsing of support structures. A novel solution of adding resin has been proposed to improve the support machinability, resulting in significant reduction of cutting forces and elimination of sample deflection.
3D PRINTING AND ADDITIVE MANUFACTURING
(2023)
Article
Green & Sustainable Science & Technology
Cuiling Zhao, Yuchao Bai, Hao Wang
Summary: This study investigates the feasibility and reliability of fabricating multi-material components using the LPBF process. The results show that the LPBF process can achieve excellent metallurgical bonding and corrosion resistance in the multi-material parts.
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING-GREEN TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Zixin Liu, Yongqiang Yang, Changjun Han, Hanxiang Zhou, Heng Zhou, Meng Wang, Linqing Liu, Han Wang, Yuchao Bai, Di Wang
Summary: This study presented the formation characteristics and dynamic behavior of droplet spatters in the laser powder bed fusion (LPBF) process under different gas flow parameters using high-speed imaging. It was found that the scan direction against the gas flow (SD-A) produced fewer droplet spatters compared to the scan direction with the gas flow (SD-W). The quantitative relationship between the gas flow parameters and droplet spatter behavior was established for the first time. The maximum spattering velocity increased to 12.8 m/s as the gas flow velocity rose to 2.5 m/s. The mechanisms of droplet spatter behavior influenced by gas flow parameters were discussed. This work provides a theoretical reference for the design and control of gas flow parameters during large-scale LPBF.
MATERIALS & DESIGN
(2023)
Review
Materials Science, Multidisciplinary
Changhui Song, Lisha Liu, Zhengtai Deng, Haoyang Lei, Fuzhen Yuan, Yongqiang Yang, Yueyue Li, Jiakuo Yu
Summary: This study reviews the design and manufacturing performance of porous titanium alloy implants manufactured by additive manufacturing technology, and analyzes the design parameters that affect bone ingrowth performance. Based on current technology trends, the future development of bone implants in terms of advanced multi-materials, design methods, and post-treatment methods is discussed.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Manufacturing
Di Wang, Han Wang, Zixin Liu, Ziyu Chen, Yu Long, Yingjie Zhang, Yuchao Bai
Summary: Multi-laser stitching additive manufacturing technology is an effective solution to overcome size limitations in single-laser additive manufacturing. The study investigates the influence of laser delay parameters on the forming quality of a stainless steel melt track and explores the mechanism of laser delay on internal pore defects and surface quality in the dual-laser stitching region.
JOURNAL OF MANUFACTURING PROCESSES
(2023)
Article
Engineering, Manufacturing
Changhui Song, Zhuang Zou, Zhongwei Yan, Xiyu Yao, Feng Liu, Yongqiang Yang, Ming Yan, Changjun Han
Summary: This study investigated the printability, microstructure, and mechanical properties of Zr-4 alloy additively manufactured by laser powder bed fusion (LPBF) for the first time. The optimized printing parameters resulted in a Zr-4 alloy with a high relative density of 99.77%. Increasing the annealing temperature led to a microstructural change in the alloy, resulting in a high compressive strength of 2130 MPa and compressive strain of 36%. Precipitation of Zr (x) (Fe2Cr) compounds at annealing temperatures exceeding 700 degrees C strengthened the alloy by pinning effect. These findings provide valuable guidance for the manufacture of geometrically complex Zr alloy parts for nuclear power applications.
VIRTUAL AND PHYSICAL PROTOTYPING
(2023)
Article
Materials Science, Ceramics
Changhui Song, Yongqi Chen, Zibin Liu, Yinong Li, Yongqiang Yang, Jiakuo Yu
Summary: This paper presents a strategy for removing excess cured areas caused by light scattering in order to improve the forming accuracy and speed of ceramic parts.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Optics
Chaojiang Li, Depiao Liu, Guodong Liu, Shenggui Liu, Xin Jin, Yuchao Bai
Summary: AM metal parts often have defects and rough surfaces, and post-treatment processes are required for materials with corrosion resistance requirements. Laser polishing is an efficient and environmentally friendly technique, but research on its effects on surface morphology, defect formation, and surface characteristics of AM parts is lacking.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Mingkang Zhang, Jinwei Li, Chang Liu, Mingjian Deng, Xing Liao, Di Wang
Summary: The anisotropy of triply periodic minimal surface (TPMS) porous structures was studied by rotating them around three crystal directions. The results showed that the IWP structure had the most significant anisotropy when rotated in the [110] direction, with a 275.33% increase in relative elastic modulus. However, the performance of the primitive structure significantly decreased when rotated in the [111] and [110] directions, by 72.66% and 77.6% respectively. Gradient TPMS structures were designed and manufactured based on the anisotropy of TPMS, showing enhanced yielding platforms.
Article
Engineering, Biomedical
Jincheng Tang, Zhuo Sang, Xiaolei Zhang, Changhui Song, Wei Tang, Xiaoping Luo, Ming Yan
Summary: Residual powder in powder bed fusion-based additive manufacturing is a difficult defect to remove. This study compared the immunological reactions and osteolysis caused by typical powders for four implant materials in a mouse skull model and compared the immunological responses and bone regeneration induced by the four 3D printed implants with residual powder in a rat femur model. The results showed good biological safety and potential for future clinical applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE
(2023)
Article
Metallurgy & Metallurgical Engineering
Wang Meng, Yang Yongqiang, Vyacheslav Trofimov, Song Changhui, Zhou Hanxiang, Wang Di
Summary: Selective laser melting (SLM) is a widely used high-precision additive manufacturing technology that can achieve arbitrarily complex structures. The particle size of the powder used in SLM has a significant impact on the processability and forming quality. The study shows that the medium particle size has the best processability for SLM.
ACTA METALLURGICA SINICA
(2023)
Article
Materials Science, Multidisciplinary
Changhui Song, Yongqi Chen, Lisha Liu, Haoyang Lei, Xinji Yang, Jian Hu, Qian Li, Yongqiang Yang, Yueyue Li
Summary: This study synthesized Ti-5Ag alloy with an antibacterial rate close to 100% in situ by laser powder bed fusion (LPBF) and systematically studied its microstructure and properties. Phase analysis showed the existence of Ti2Ag which played a crucial role in achieving excellent antibacterial properties. Benefiting from in situ laser alloying, the elements were uniformly distributed, giving the Ti-5Ag alloy excellent mechanical properties and corrosion resistance. Through the design of TPMS structures, mechanical properties matching human bone were obtained.
MATERIALS TODAY ADVANCES
(2023)
Article
Engineering, Manufacturing
Yuchao Bai, Yan Jin Lee, Yunfa Guo, Qi Yan, Cuiling Zhao, A. Senthil Kumar, Jun Min Xue, Hao Wang
Summary: This study investigates the micro-cutting of additively manufactured high-strength maraging steel and its relationship with microstructural features, mechanical properties, and the effectiveness of the mechanochemical effect. The results show that the mechanochemical effect can be induced successfully, leading to substantial reductions in cutting forces and improvements in surface quality. However, the presence of nanoparticles in age-treated steel renders the mechanochemical effect ineffective in improving machinability.
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE
(2023)
Article
Chemistry, Physical
Yinong Li, Jie Zhan, Changhui Song, Zhongwei Yan, Zhengtai Deng, Feng Liu, Yongqiang Yang
Summary: In this study, a novel neutron shielding composite material was developed using laser powder bed fusion technology, with AlSi10Mg as the frame structure and epoxy resin/B4C mixed materials added. Compression and shielding tests showed that the material exhibited excellent mechanical and shielding properties, making it suitable for neutron shielding in the nuclear industry.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Long Xu, Yuchao Bai, Yunfa Guo, Chang Ren, Xiaohua Tan, Yandong Jia, Gang Wang, Hao Wang
Summary: Researchers have investigated the use of precipitation strengthening and finer microstructures to produce high-entropy alloys with adjustable properties in additive manufacturing. However, the surface roughness and lack of machinability in these alloys limit their engineering applications. This study systematically investigated the microstructural characteristics, mechanical properties, and machinability of Fe29.3Co28.7Ni28.6Al6.8Ti6.6 HEAs with different structures. The results showed that the different structures had significant effects on the alloy's strength, ductility, and machinability.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
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)
