Article
Materials Science, Multidisciplinary
Wook Ha Ryu, Kyung Jun Kim, Min Kyung Kwak, Chae Woo Ryu, Eun Soo Park
Summary: This research provides a practical guideline to significantly reduce production costs of metallic glasses (MGs) through tailored alloy design and precise control of thermoplastic forming (TPF) process parameters. It is discovered that commercially available MGs with a low glass transition temperature (Tg) can be developed in the Zr-rich alloy systems. Moreover, the challenge of maintaining a wide TPF window in Be-free Zr-based MGs while keeping Tg low has been addressed.
MATERIALS & DESIGN
(2023)
Article
Materials Science, Multidisciplinary
Fei Feng, Jianjun Li, Liang Huang, Yunjun Zhang, Shijing Cao, Rongchuang Chen, Suo Fan
Summary: Direct pulse current electromagnetic forming (DPCEMF) is a high-speed forming method that combines pulsed current heating and electromagnetic forming to address forming difficulties in low conductivity and high strength materials. Experimental validation of the DPCEMF process was conducted, and a process window for corrugation forming of Ti-6Al-4V titanium alloy was proposed.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Dan Wang, Ying He, Yangyang Yu, Peng Fan, Han Gao, Penghuai Fu, Liming Peng
Summary: Microstructures and mechanical properties of Mg-6Gd-xY-0.5Zr (wt.%, x = 0, 0.5, 1 and 3) alloys with different conditions are investigated. The addition of Y modifies the species of precipitates and influences the size and area number density of β' precipitate. Mg-6Gd-1Y-0.5Zr alloy with good combination properties is developed.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Wenli Wang, Xin Yang, Kong Kong Wang
Summary: Selective laser melting (SLM) is a laser additive manufacturing technology that offers high efficiency and is capable of processing complex structural parts. This study investigated the microstructure characteristics and performance mechanism of Mg-Y-Sm-Zn-Zr alloy manufactured using SLM. The results showed that samples with high densities and low surface roughness could be produced at an energy density of 83.3-166.7 J/mm3, with the highest density of 97.8% achieved at 125.7 J/mm3. The molten pool exhibited slender columnar grains at the edge, a small amount of equiaxed grains at the top, and coarsened grains below. The role of Y2O3 in solidification was affected by lattice mismatch and did not serve as an effective nucleation particle. The highest compressive performance was obtained at 125.7 J/mm3, with a yield strength (YS) of 304 +/- 5 Mpa and ultimate tensile strength (UTS) of 394 +/- 5 Mpa. The main strengthening mechanisms were fine-grain strengthening, precipitation strengthening, and the limited effect of solid solution strengthening. This work provides guidance for further research on SLMed rare earth magnesium alloy.
MATERIALS CHARACTERIZATION
(2022)
Article
Chemistry, Physical
Ming Li, Xu Wang, Yu Liu, Zhengbing Xiao, Yuanchun Huang
Summary: The heterogeneous bimodal microstructure and its formation mechanism of Mg-Gd-Y-Zn-Zr alloy during iso-thermal compression at 450 degrees C and 0.001 s-1 were investigated. The alloy exhibited bimodal grain size distribution and bimodal texture distribution during uniaxial isothermal compression. Particle-stimulated nucleation (PSN) and continuous dynamic recrystallization (CDRX) were identified as the main grain refinement mechanisms. Inhomogeneous plastic deformation, DRX, and grain boundary pinning effect were determined to be the necessary conditions for the formation of the bimodal microstructure.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Beibei Dong, Jing Chai, Guoqin Wu, Huifang Zhang, Zhimin Zhang, Jianmin Yu, Yong Xue, Mu Meng
Summary: The effects of isothermal multi-directional forging (MDF) on the microstructure, texture evolution, and mechanical properties of homogenized Mg-13Gd-4Y-2Zn-0.5Zr alloy were investigated in this study. The results showed that the MDF passes gradually decreased the average grain size of the alloy, resulting in a more uniform microstructure distribution. The MDF process also led to changes in the distribution of LPSO phases and Mg5(Gd,Y) precipitates within the grains. Additionally, the maximum texture intensity on the basal plane decreased with the increasing MDF passes due to the formation of dynamic recrystallized grains. The alloy exhibited excellent mechanical properties, attributed to various strengthening mechanisms such as grain boundary strengthening, dislocation strengthening, texture strengthening, and precipitation strengthening.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Nanoscience & Nanotechnology
Zhibing Ding, Xuanle Zhi, Bin Liu, Hua Hou, Shuai Zhang, Wenmin Guo, Dongrui Chen, Yuhong Zhao
Summary: The effect of Sn addition on the microstructure and mechanical properties of Mg-12Gd-3Y-0.5Zn-0.6Zr alloys was investigated. The addition of Sn increased the number and high temperature stability of Sn3RE5 phases, resulting in an increased elastic modulus of the alloys. It also significantly increased the number of fine circular beta' phases in peak-aged alloys. Suitable addition of Sn endowed the Mg-12Gd-3Y-0.5Zn-0.6Zr-1Sn alloy with excellent comprehensive performance.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Z. Aalipour, A. Zarei-Hanzaki, A. Moshiri, H. R. Abedi, Daudi Waryoba, A. Kisko, L. P. Karjalainen
Summary: The microstructure and microtexture changes of an extruded and annealed magnesium alloy were investigated under different strain and processing conditions. The results showed that the material underwent noticeable refinement even at low applied compressive strain. Recrystallization process was completed at a true strain of 0.3, and grain refinement was attributed to the LSN and CDRX mechanisms. At higher strain levels, most grains were found in deformed states and the microtexture only changed in terms of intensity.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Physical
Jingyu Jiang, Feng Jiang, Hongfeng Huang, Menghan Zhang, Zhongqin Tang, Mengmeng Tong
Summary: The deformation behavior and microstructure evolution of the alloy are significantly affected by deformation temperature and strain rate. High temperature and low strain rate are beneficial for dynamic recrystallization or dynamic recovery.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Qian Gao, Zengyun Jian
Summary: Isothermal phase transformation of Zr50Cu43Ag7 (at%) amorphous alloy was studied, and the released crystallization enthalpy Alfx was calculated. It was found that the incubation time τ and the end time tce of crystallization decreased with increasing annealing temperature. The maximum rates of crystallization [df/d(tIso-τ)]max, crystallization volume fraction fmax, and corresponding time tmax were determined. The local activation energy E(f) decreased initially, remained essentially unchanged, and then sharply decreased with further crystallization transformation. The crystallization mechanism for Zr50Cu43Ag7 amorphous alloy was found to be interface-controlled growth.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Metallurgy & Metallurgical Engineering
Maria Nienaber, Jan Bohlen, Sangbong Yi, Gerrit Kurz, Karl Ulrich Kainer, Dietmar Letzig
Summary: This study investigates the influence of Ca addition in a Y-Zn-containing magnesium alloy on the recrystallization behaviors and formation mechanism of the quadrupole texture. The results show that Ca addition promotes the dynamic recrystallization of WZ10 alloy, but is not beneficial for the formability of WZX100 alloy.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Materials Science, Ceramics
Q. Wang, L. L. Pan, B. Z. Tang, D. Ding, L. Xia
Summary: Fe88La4Ce3B5 amorphous alloy was successfully vitrified in ribbon form with outstanding magnetocaloric properties, surpassing other iron-based metallic glasses and offering a new approach to enhance the magnetocaloric properties of iron-based metallic glasses.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Materials Science, Multidisciplinary
Mozhgan Shokri, Abbas Zarei-Hanzaki, Hamid Reza Abedi, Jae Hyung Cho
Summary: The study investigated the correlation between microstructure/texture evolutions and high temperature flow behavior in Mg alloy containing long period stacking order (LPSO) phases. The annealing treatment effectively strengthened the alloy and decreased ductility, with blocky LPSO assisting dynamic recrystallization and lamellar LPSO increasing alloy strength. The findings suggest that microstructure and texture evolution play a significant role in the high-temperature behavior of the Mg alloy.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Chemistry, Physical
Yabo Fu, Haonan Chen, Renqing Guo, Yuanding Huang, Mohammad Reza Toroghinejad
Summary: The study investigated the microstructure and mechanical properties of Zr-based alloys prepared by vacuum suction-cast, revealing that the alloy with gradient amorphous structure exhibited exceptional strength and ductility, with a maximum compressive strength of 1811.7 MPa and a plastic strain of 23.6%. The enhancement of strength was attributed to the presence of nanoscaled amorphous particles, oxide nanoparticles, and the toughening phase CuZr in the alloy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Metallurgy & Metallurgical Engineering
Lirong Xiao, Xuefei Chen, Huiyan Ning, Ping Jiang, Yi Liu, Bin Chen, Dongdi Yin, Hao Zhou, Yuntian Zhu
Summary: In Mg-Gd-Y-Ag alloy, high temperature brittleness may occur due to weakened grain boundaries caused by segregated interfacial compounds.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Materials Science, Multidisciplinary
Hao-Ran Jiang, Benedikt Bochtler, Maximilian Frey, Qi Liu, Xian-Shun Wei, Yang Min, Sascha S. Riegler, Dan-Dan Liang, Ralf Busch, Jun Shen
Article
Materials Science, Multidisciplinary
Cong Ma, Xianshun Wei, Biao Yan, Pengfei Yan
Article
Engineering, Mechanical
K. L. Zheng, X. S. Wei, B. Yan, P. F. Yan
Article
Chemistry, Physical
Hao-Ran Jiang, Benedikt Bochtler, Sascha S. Riegler, Xian-Shun Wei, Nico Neuber, Maximilian Frey, Isabella Gallino, Ralf Busch, Jun Shen
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Metallurgy & Metallurgical Engineering
Dandan Liang, Xiaodi Liu, Yinghao Zhou, Yu Wei, Xianshun Wei, Gang Xu, Jun Shen
Summary: The study demonstrates that sub-T-g annealing can improve the thermal stability, hardness, and corrosion resistance of Fe-based amorphous coatings, enhancing their performance in 3.5 wt% NaCl solution.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Chunyue Yin, Zhehao Lu, Xianshun Wei, Biao Yan, Pengfei Yan
Summary: The study investigates the microstructure and mechanical properties of hypereutectic Al-Si alloy processed by selective laser melting, showing significant improvements in hardness and bending strength compared to traditional production methods. The fine microstructure induced by rapid cooling rate of SLM results in smaller primary silicon sizes, leading to enhanced mechanical properties in the fabricated Al-22Si-0.2Fe-0.1Cu-Re alloy.
Article
Materials Science, Multidisciplinary
X. S. Wei, J. L. Jin, Z. Z. Jiang, D. D. Liang, J. Shen
Summary: The FeCrMoWCBY metallic glass showed excellent corrosion resistance in oxygen-saturated lead-bismuth eutectic at 500 degrees C. Adding the right amount of W element can enhance corrosion resistance, but excessive W can reduce it. The surface structure of the Fe-based metallic glass consists of an inner amorphous transition layer and an outer FeCr2O4 oxide nanocrystal layer, with the continuous amorphous layer acting as a diffusion barrier to prevent further corrosion.
Article
Materials Science, Coatings & Films
Jingchen Wang, Yukui Gao, Xianshun Wei
Summary: The study found that a combination treatment of shot peening and magnetron sputtering could significantly improve the fretting fatigue resistance of GH4169 superalloy at 650 degrees C. Shot peening improved the adhesion behavior of oxidized films, while magnetron sputtering further increased the fatigue life.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Physics, Applied
C. X. Zhou, Y. Yu, X. S. Wei, B. Yan
Summary: This study evaluated the influence of working pressure on the structure and magnetic properties of iron film. It was found that increasing working pressure led to a decrease in crystallinity and particle size, resulting in improved magnetic properties due to the production of compressive strain.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2022)
Article
Engineering, Mechanical
K. L. Zheng, P. F. Yan, X. S. Wei, B. Yan
Summary: The study investigates the formation of an iron-poor friction transfer film in hybrid reinforced aluminum-based composites, resulting in high friction coefficient and low wear rate. The composition of the friction transfer film was analyzed using various techniques, revealing the presence of nanosized aluminum, ultra-fine aluminum, and crushed silicate particles interwoven in a nano-network structure.
Article
Engineering, Environmental
Jianguo Feng, Zhiguang Chen, Cong Wu, Chaokui Qin, Xianshun Wei
Summary: This paper investigates the corrosion behavior of buried steel pipelines near urban rail transits under dynamic direct current interference. The results indicate that the corrosion resistance of Q235B steel decreases with increasing current density, and the corrosion morphology shows pitting corrosion. The study also finds that the corrosion of buried steel pipelines is related to the types and counts of rail train arrivals.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Materials Science, Multidisciplinary
Xianshun Wei, Zongyi Liao, Shaochong Wei, Guoxing Chen, Haifeng Lu, Yan Liang, Mingwei Cai, Jun Shen
Summary: The effects of nanosecond pulsed laser processing on Fe-based metallic glass coating were investigated, revealing changes in surface morphology, microstructure, and corrosion resistance. The remelted coating showed improved corrosion resistance in a NaCl solution.
Article
Materials Science, Multidisciplinary
KaiLong Zheng, Hui Xing, Lanting Zhang, PengFei Yan, XianShun Wei, Biao Yan
Summary: Friction transfer film is an important factor in the evolution of subsurface microstructure of frictional contact materials. A study was conducted on an iron-poor friction transfer film of aluminum-based composites using various microscopic techniques. The study revealed the presence of ultra-fine aluminum, nano-aluminum, broken silicon carbide and silicate particles, as well as in-situ generated andradite and gismondine, which formed a nano-network structure supporting the friction transfer film. Thermodynamic calculations and high-resolution transmission electron microscopy provided insights into the formation mechanism of andradite and gismondine.
Review
Optics
Y. Liang, Z. Y. Liao, L. L. Zhang, M. W. Cai, X. S. Wei, J. Shen
Summary: In recent years, there has been a demand for critical parts in the industry that possess excellent high-temperature resistance, wear resistance, corrosion resistance, and other properties. Extreme high-speed laser cladding (EHLA) has emerged as a new surface treatment technology that efficiently and economically prepares high-performance coatings on part surfaces. EHLA enables good metallurgical bonding between coating and substrate at low heat input and promotes microstructure refinement and uniform composition distribution. This paper provides a detailed overview of the research progress in EHLA technology, covering cladding process optimization, process simulations, material systems, and defect types, as well as the setting of process parameters, factors affecting coating performance, and defect formation mechanism.
OPTICS AND LASER TECHNOLOGY
(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)