Article
Chemistry, Multidisciplinary
Jing Zhou, Xuesong Li, Xibei Hou, Haibo Ke, Xingdu Fan, Junhua Luan, Hailong Peng, Qiaoshi Zeng, Hongbo Lou, Jianguo Wang, Chain Tsuan Liu, Baolong Shen, Baoan Sun, Weihua Wang, Haiyang Bai
Summary: A promising nanocrystalline-amorphous composite alloy with a normal composition Fe75.5Co0.5Mo0.5Cu1Nb1.5Si13B8 is reported, which exhibits exceptionally high permeability at high frequencies, surpassing all existing nanocrystalline alloy systems and commercial soft magnetic materials.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jinming Lai, Likang Xiao, Zhengwei Xiong, Leiming Fang, Wenkun Zhu, Fangguang Kuang, Zhipeng Gao
Summary: FeNiMo/SiO2 powder cores were prepared using the sol-gel method, with an amorphous SiO2 coating outside the FeNiMo particles. The thickness of the SiO2 layer was controlled by varying the concentration of TEOS. The optimized powder cores exhibited high permeability and low magnetic loss, with improved high-frequency stability and superior magnetic properties compared to commercial products.
Article
Chemistry, Physical
Yongcheng Lu, Yuanxun Li, Daming Chen, Rui Peng, Qinghui Yang, Shijun Zhang
Summary: Through the study of the crystal structure, microstructure, and electrical properties of composite ceramics, it was found that the addition of LaCo0.4Ni0.58Zn0.02O3 decreased the electrical conductivity and changed the temperature coefficient of resistance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Metallurgy & Metallurgical Engineering
Chuang-Shi Feng, Tian-Wei Lu, Tian-Li Wang, Man-Zhen Lin, Junhua Hou, Wenjun Lu, Wei-Bing Liao
Summary: This study investigates a novel high-entropy thin film (HETF) with amorphous structure deposited via pulsed laser deposition system, which exhibits high electrical resistivity and excellent corrosion resistance, making it a potential new material for use in microelectronic components.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2021)
Article
Chemistry, Physical
Qimeng Sun, Songjie Li, Xiaomei Yu, Yanmin Zhang, Tiantian Liu, Jin You Zheng
Summary: In this study, amorphous Bi-WO3 films with enhanced electrochromic performance were synthesized through a simple sol-gel method. The effects of Bi doping amount and sol concentration on the electrochromic properties of Bi-WO3 films were investigated. The optimized Bi-WO3 film displayed excellent electrochromic performance and could be used for assembling high-performance electrochromic devices.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Electrical & Electronic
Xingang Luan, Shaomin Gu, Qiqi Zhang, Sam Zhang, Laifei Cheng
Summary: This paper investigates the relationship between microstructure and resistivity of SiHfBCN film, and explores the methods to regulate resistivity. It is found that the resistivity of amorphous SiHfBCN film is mainly determined by the overall electronegativity difference and contents of insulating chemical bonds. The resistivity of SiHfBCN films can be effectively controlled by changing their composition. Additionally, annealed SiHfBCN exhibits a stable structure.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Engineering, Multidisciplinary
Stephane Multon, Jerome Verdier, Geraldine Villain, Hognon Sogbossi, Xavier Derobert, Hugo Cagnon, Jean-Paul Balayssac
Summary: This study aims to evaluate the capability of non-destructive techniques to assess the leakage flow of concrete structures. The analysis highlights the importance of combining permeability, capacitive and resistive measurements for evaluating the air tightness of concrete in the field.
Article
Thermodynamics
E. B. Peixoto, J. G. S. Duque, L. S. Silva, R. A. G. Silva
Summary: In this study, the effects of thermal heating on an as-cast Fe-based amorphous ribbon were investigated using various characterization techniques. The results showed that the transition temperatures of magnetic phases, crystallized fraction, and magnetic anisotropy are all dependent on the thermal heat. Additionally, the XRD analysis confirmed the presence of Fe3Si nanocrystalline phase within the amorphous matrix.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Pharmacology & Pharmacy
Afroditi Kapourani, Aikaterini-Theodora Chatzitaki, Ioannis S. Vizirianakis, Panagiotis Barmpalexis
Summary: This study aims to investigate some unanswered questions about a newly introduced class of high drug loading amorphous solid dispersions (ASDs) based on the in-situ thermal crosslinking of poly(acrylic acid) (PAA) and poly(vinyl alcohols) (PVA). The results showed that the in-situ thermal crosslinked IND HD ASDs presented similar kinetic solubility profiles when dissolution studies were conducted with a steady sink index value, regardless of the different dissolution medium's volume and the total dose of the API. Additionally, the newly proposed HD ASD system resulted in a remarkably increased ex-vivo intestinal permeability of IND.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2023)
Article
Chemistry, Physical
Shujing Zheng, Zhaobing Cai, Jibin Pu, Chun Zeng, Liping Wang
Summary: The novel VAlTiCrSi amorphous high entropy alloy (HEA) film exhibited better corrosion resistance than 304 stainless steel due to its complex composition. During the rupture process of the passive film, the interaction between Cr element and Cl ions played a major role, while other elements except Cr hindered the rupture process to some extent.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Ceramics
Ting Luo, Yuanzheng Yang, Chenfeng Fan, Fangtao Hou, Guotai Wang, Jia Xu
Summary: The addition of phosphorus in Fe-Si-B-Cu-Nb alloys improves the amorphous forming ability and soft magnetic properties of the alloys, although it affects the thermal stability. High phosphorus-containing alloys show insensitivity to frequency changes in magnetic permeability and can achieve frequency-dependent constant magnetic permeability through composition design.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Chemistry, Physical
Quang Tran, Pratanu Ghosh
Summary: This study investigated the variation of bulk resistivity and charge passed in various high-performance concrete mixtures, and found that the addition of supplementary cementitious materials significantly reduced the charge passed.
Article
Engineering, Electrical & Electronic
Xiaokang Liu, Flavia Grassi, Giordano Spadacini, Sergio A. Pignari, Francois Trotti, Nicolas Mora, Werner Hirschi
Summary: This article presents a systematic procedure for accurately reproducing the frequency response of the input impedance of magnetic cores using equivalent circuit networks. The procedure utilizes a high-order Debye series expansion to represent the complex permeability spectra of the magnetic core, which is then synthesized into suitable Foster and Cauer networks. These networks can be implemented in any circuit simulator and are particularly favorable for time-domain transient simulation.
IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY
(2021)
Article
Materials Science, Multidisciplinary
Kai Chong, Yu Gao, Zhibin Zhang, Yong Zou, Xiubing Liang
Summary: The present study has designed and prepared a novel Zr22.5Ti22.5Hf22.5Ni22.5Ta10 high-entropy amorphous alloy with excellent thermal stability and corrosion resistance. The hysteresis diffusion effect caused by the high mixing entropy of the multi-principal system affects the formation of the crystalline phase and improves thermal stability. The alloy exhibits excellent corrosion resistance compared to 316 L in 3.5 wt% NaCl solution. The XPS results indicate that the passive film of Zr22.5Ti22.5Hf22.5Ni22.5Ta10 is rich in oxides of Zr, Ti, Hf, and Ta, which provides excellent resistance to chloride ion attack.
Article
Geochemistry & Geophysics
Peiqiang Zhao, Lianbo Zeng, Yuting Hou, Cong Hu, Yueli Wang, Wei He, Zhiqiang Mao
Summary: This study explores the impact of resistivity on wettability and presents a new experimental method for accurate identification of fluid types. Experimental results demonstrate that the resistivity index is highly accurate in distinguishing oil-wet rocks from water-wet rocks.
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)