Article
Materials Science, Coatings & Films
Zhenlong Peng, Xiangyu Zhang, Deyuan Zhang
Summary: The study compared the surface integrity of conventional cutting and high-speed ultrasonic vibration cutting on Inconel 718 alloy, finding that HUVC resulted in lower surface roughness, regular surface micro-texture, deeper subsurface deformation zone, higher surface microhardness rate, and higher surface compressive residual stress compared to CC. In some cases, a single HUVC step could replace the need for both cutting operation and mechanical surface treatment, improving overall surface integrity.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Engineering, Manufacturing
Dong Zhang, Xiao-Ming Zhang, Guang-Chao Nie, Zheng-Yan Yang, Han Ding
Summary: This study attempts to develop a methodology to understand and identify plastic deformation behaviors during cutting tests, utilizing high-speed filming and induction preheating. By varying the rake angle, cutting velocity, and initial workpiece temperature, different levels of strain, strain rate, and temperature are achieved, providing insights into material behaviors that can be further used in numerical machining models.
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE
(2021)
Article
Materials Science, Multidisciplinary
Longyun Yang, Chunzheng Duan, Xiuru Li, Zhaocheng Wei, Minjie Wang
Summary: This study investigates the adiabatic shear behavior of metal materials at high strain rates. It analyzes the effects of strain rate, temperature, and hardness on the plastic flow behavior and microstructural characteristics of the materials. A new dynamic constitutive model considering adiabatic shear damage and non-uniform gradient stress changes is proposed.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Nanoscience & Nanotechnology
Christopher Brown, Thomas McCarthy, Kanwal Chadha, Samuel Rodrigues, Clodualdo Aranas, Gobinda C. Saha
Summary: The study investigates the plastic flow behavior of high-entropy alloys under hot compression conditions and evaluates the suitability of various constitutive models, with some models showing reasonable accuracy in predicting the deformation behavior of the alloy. Microstructural analysis confirms the occurrence of discontinuous dynamic recrystallization during deformation at lower strain rates.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
P. Snopinski, M. Krol, T. Tanski, D. Pakula, A. Kriz
Summary: This study investigated the hot deformation behavior of high-temperature annealed and as-cast AlMg5Si2Mn aluminum alloy through compression tests, comparing their deformation properties. Results showed that the annealed state exhibited lower deformation resistance at lower deformation temperatures. Activation energies for deformation were calculated to be 181 kJ*mol(-1) for the as-cast condition and 169 kJ*mol(-1) for the annealed condition.
MATERIALS CHARACTERIZATION
(2021)
Article
Chemistry, Physical
Gang Su, Zhong Yun, Yong-Cheng Lin, Dao-Guang He, Song Zhang, Zi-Jian Chen
Summary: The study investigated the flow behavior and microstructure change of the Ti-55511 alloy through thermal compression experiments. A unified constitutive model was developed, considering work hardening effect and dynamic softening mechanisms, with material parameters optimized using a multi-objective algorithm, demonstrating the model's ability to accurately describe the hot compressed alloy's flow features and microstructure evolution.
Article
Engineering, Multidisciplinary
Wei-Li Song, Quan Ma, QingLei Zeng, ShengXin Zhu, MingBin Sui, TangQing Cao, Wei Qi, YinQiang Chen, XiaoQi Yu, YunFei Xue, Hao-Sen Chen
Summary: This study investigates the mechanism of dynamic shear banding in a BCC HEA HfNbZrTi, and finds that in this material, dynamic shear banding is primarily controlled by damage softening, with thermal softening playing a secondary role.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2022)
Article
Materials Science, Multidisciplinary
Zhecheng Zhou, Qi Wang, Ruirun Chen, Xu Wang, DeZhi Chen, Hengzhi Fu
Summary: The variations in flow stress at elevated temperature for Nb-20Ti-16Si-0.5Gd alloy were studied through thermal simulation experiment. The results showed that the flow stress decreased with increasing deformation temperature, but increased with increasing strain rate. The constitutive equation of the alloy was derived using the Arrhenius hyperbolic sine function, accurately fitting the relationship between strain rate, stress, and temperature.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Zhijie Wang, Yan Cao, Sergey Gorbachev, Victor Kuzin, Weiliang He, Junde Guo
Summary: This paper conducted finite element analysis on the conventional and high-speed cutting processes of 7075-T6 aluminum alloy, investigating the influence of Johnson Cook constitutive model parameters on cutting force simulation. Results showed that parameter adjustments are necessary for accurate cutting force prediction under different cutting conditions.
Article
Engineering, Mechanical
Xueqiang Wang, Lingyang Yuan, Gang Xiao, Liming Peng, Siping Li
Summary: Die-cast Al-Si aluminium alloys are increasingly used in the lightweight design of automobiles, and their mechanical properties under dynamic loading are crucial. However, the original Johnson-Cook (J-C) constitutive model fails to accurately predict the mechanical properties of this alloy. To address this issue, high-speed tensile tests are conducted on a die-casting aluminium alloy, and a new model based on experiments is proposed to accurately predict the flow stress of the alloy.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Engineering, Mechanical
Wei Fang, Junkai Chen, Fei Cai, Qi Zhou, Mingxi Li, Shihong Zhang
Summary: AlTiBN coatings with varied B contents were produced to investigate their microstructures, thermal stability, and high-speed dry cutting performance. The addition of B promoted structural refinement, increased adhesive strength, ratios of H/E * and H3/E * 2, thereby reducing coefficients of friction and wear rates. Compared to AlTiN coating, the high-speed dry turning tests demonstrate significant improvement in tool life for AlTiBN coating, with the B10 coating showcasing the longest cutting length of approximately 780 m due to its high toughness, superior thermal stability, increased ratios of H/ E * (0.082) and H3/E * 2 (0.207 GPa) at 1000 degrees C, and reduced crater wear and cutting force.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Cong Li, Can Huang, Zhili Ding, Xing Zhou
Summary: The thermal deformation behavior of Ti-10V-2Cr-3Al titanium alloy was investigated through hot compression experiments. The results showed that the rheological stress decreases with increasing deformation temperature or decreasing strain rate. Flow softening is dominated by dynamic recrystallization or dynamic recovery in different phase regions.
Article
Chemistry, Physical
Lukasz Zylka, Rafal Flejszar, Pawel Lajmert
Summary: The impact of cutting-edge microgeometry on cutting forces in the finish milling of a 7075-aluminium alloy was analyzed. The influence of rounding radius of cutting edge and the size of the margin width on cutting-force parameters was analyzed. Experimental tests were carried out for different cross-sectional values of the cutting layer. Mathematical models of the relationship between force parameters and the radius of the rounded cutting edge and the width of the margin were developed.
Article
Automation & Control Systems
Ping Zhang, Zhenyong Lin, Shunxiang Wang, Xiujie Yue, Yeran Gao, Songting Zhang
Summary: This paper examines the impact of different cutting parameters on the micro-cutting mechanism of high-entropy alloy FeCoCrNiAl0.6. The findings show that increasing the cutting depth leads to a gradual rise in cutting force and a positive correlation between them. Higher cutting speed results in small fluctuations in cutting force, while increasing the feed rate leads to a gradual increase in cutting force. Moreover, the cutting temperature and maximum temperatures of the tool surface and chip surface increase with higher cutting depth, and they are positively correlated. There is also a positive correlation between cutting temperature and cutting speed.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Automation & Control Systems
Farhad Molaiekiya, Ali Aliakbari Khoei, Maryam Aramesh, Stephen C. Veldhuis
Summary: The study evaluates the surface integrity of Inconel 718 machined with SiAlON cutting tools at high speeds, showing potentially negative surface effects.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Mingming Lu, Jianzhong Chen, Dongpo Zhao, Jieqiong Lin, Zhimin Zhu, Bin Chen, Allen Yi
Summary: This paper presents the results and challenges of vibration-assisted swing cutting (VASC) technology in ultra-precision manufacturing, microelectronics engineering, and bioengineering applications. Theoretical modeling and cutting experiments validate the effectiveness of VASC technology in suppressing residual-height between adjacent trajectories, demonstrating its practical applications in micro/nano machining.
APPLIED NANOSCIENCE
(2021)
Article
Engineering, Electrical & Electronic
Sai Lei, Mingming Lu, Jieqiong Lin, Xiaoqin Zhou, Xuemei Yang
Summary: This study introduces a new denoising method for remote sensing images, incorporating an eight-direction filter bank and optimized contour transformation. The method features multi-scale and multi-direction characteristics, capturing image details effectively, and utilizes an improved semi-soft threshold function to restore edge information in the image.
SIGNAL IMAGE AND VIDEO PROCESSING
(2021)
Article
Optics
Jieqiong Lin, Yan Zhou, Haitao Wang, Yan Gu, Minghui Gao, Xin Guo, Haibo Xu
Summary: This study conducted a comprehensive analysis of an airborne camera, investigating the connection between camera structure and optical systems, and studying the impact of microvibration on optical performance as well as the change of optical surface accuracy.
Article
Engineering, Multidisciplinary
Hao Liu, Xiaoqin Zhou, Qiang Liu, Meng Ma, Xiuzhi He, Jieqiong Lin
Summary: This paper proposes a new three-axis integrated aerial camera to improve imaging efficiency by analyzing the influence of mechanical errors on pointing errors and establishing pointing parametric and semi-parametric models. Both models successfully calibrate the pointing of aerial cameras, leading to a significant reduction in pointing errors and improvement in image quality.
MEASUREMENT SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Manufacturing
Yan Gu, Si Chen, Jieqiong Lin, HongYu Xu, XianYao Li
Summary: The anti-reflection nanopillar structures layer prepared by the non-resonant vibration-assisted UV nanoimprint lithography has better surface morphology and higher filling rate, with a 39% increase in filling rate and a 68% reduction in reflectivity, leading to a 21.07% improvement in power conversion efficiency of solar cells.
JOURNAL OF MANUFACTURING PROCESSES
(2021)
Article
Materials Science, Composites
Jiakang Zhou, Jieqiong Lin, Mingming Lu, Xiaoqin Zhou, Yongsheng Du, Chao Wang
Summary: This paper proposed a geometric model of cutting force to predict the cutting force and monitor the cutting state during machining of SiCp/Al composites. The validity of the model was confirmed, and the applicability of the model under different volume fractions of SiCp/Al composites was studied.
APPLIED COMPOSITE MATERIALS
(2021)
Article
Engineering, Industrial
Yihang Fan, Yongshuo Xu, Zhaopeng Hao, Jieqiong Lin
Summary: The study shows that the presence of SiC particles changes the microstructure of the matrix material, leading to a high strain gradient in the matrix which makes the material more prone to shear deformation localization. During the cutting process, defects and breakage of SiC particles result in the formation of micro-cracks, which play a key role in chip generation. By comparing simulation and experimental results, it is found that the established theoretical model based on strain gradient better reflects the cutting process of particle-reinforced metal matrix composites.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2022)
Article
Engineering, Manufacturing
Xulong Zhuang, Mingming Lu, Jiakang Zhou, Jieqiong Lin, Weixing Li
Summary: By optimizing the shape of the arc permanent magnet through finite element simulation, the polishing efficiency of planar optical elements can be improved, resulting in better processing quality. Experimental results demonstrate that the use of arc permanent magnets can significantly reduce surface roughness and improve surface accuracy.
MATERIALS AND MANUFACTURING PROCESSES
(2022)
Article
Engineering, Mechanical
Jieqiong Lin, Chao Wang, Mingming Lu, Jiakang Zhou, Shixin Zhao, Yuyang Liu
Summary: The study developed a cutting force prediction model for ultrasonic vibration-assisted turning of SiCp/Al composites, effectively reducing the difficulty of machining and improving machinability. The feasibility of ultrasonic vibration-assisted turning was verified, and systematic analysis of cutting force was conducted.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART E-JOURNAL OF PROCESS MECHANICAL ENGINEERING
(2022)
Article
Chemistry, Analytical
Xifeng Fu, Hong Gong, Mingming Lu, Jiakang Zhou, Jieqiong Lin, Yongsheng Du, Ruiqi Zhou
Summary: This study proposed a piezoelectric hysteresis modeling method based on a generalized Bouc-Wen model, and used an improved flower pollination algorithm (IFPASO) to identify model parameters. Experimental results showed that the model identified by IFPASO had high modeling accuracy, effectively describing the piezoelectric hysteresis characteristics of the 3D-EVC system.
Article
Chemistry, Multidisciplinary
Xian Jing, Wenfang Si, Jie Sun, Jiakang Zhou, Jieqiong Lin, Baojun Yu, Mingming Lu
Summary: This study utilized two-photon polymerization technology to measure the surface topography of crescent arrays in the Nepenthes slippery zone, proposing an outside-in scanning method to address issues in bionic crescent array surface fabrication. It systematically investigated the geometric parameters of BCAS and used perfluorinated polyether oil and fluorocarbon solvent to enhance hydrophobicity. Additionally, anisotropic wetting research was conducted, revealing the effects of offset and outer-inner radius ratio on contact angle differences and observing spreading and pinning phenomena caused by droplet anisotropic wetting.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Multidisciplinary Sciences
Jieqiong Lin, Zhenyan Zhu, Xian Jing, Mingming Lu, Yan Gu
Summary: The swimming performance of the magnetic driven microhelical robot is determined by its geometric structure. By extending the existing swimming mathematical model and exploring different geometric characteristics, the swimming speed and stability of the microhelical robot can be improved, laying a good foundation for future applications in complex environments.
ADVANCED THEORY AND SIMULATIONS
(2021)
Article
Chemistry, Analytical
Shiyu Li, Jinguo Han, Haiqiang Yu, Jinhui Wang, Mingming Lu, Yebing Tian, Jieqiong Lin
Summary: This paper adopts the finite element method to study the cutting force and residual stress of titanium alloy in elliptical vibration cutting. The study finds that cutting speed, vibration amplitude, vibration frequency, and depth of cut have significant effects on the principal cutting force. Furthermore, the 3D EVC method can easily generate a compressive stress layer near the machined surface, which improves the working performance of the workpiece.
Article
Engineering, Electrical & Electronic
Tonghuan Ran, Guangfeng Shi, Jieqiong Lin, Linghe Meng
Summary: In order to obtain high-resolution and high-precision images, an aviation remote sensing stabilization platform (ARSSP) is used to isolate unpredictable aerial camera movements. However, nonlinear interferences in the ARSSP system, such as interaxle coupling interference, adversely affect the imaging quality. To address this problem, a dynamic model of moment coupling between shafts is derived and a nonlinear cross feedback decoupling scheme is adopted. The results show that the SMC-CMAC significantly reduces the interaxle coupling effect and nonlinear interference, resulting in improved tracking performance of the ARSSP system.
Review
Engineering, Mechanical
Dunlan Song, Hongguang Du, Jieqiong Lin, Xiaoqin Zhou, Rongqi Wang
Summary: The magnetorheological jet polishing (MJP) technique is a revolutionary flexible contact polishing approach suitable for the smooth and ultra-smooth machining of functional surfaces with tiny or microstructures. It does not require machine tool accuracy and offers advantages such as high efficiency, minimal surface damage, great surface shape adaptation, and superior material removal process selectivity.
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)
