Article
Materials Science, Multidisciplinary
Yayoi Tanaka, Hisashi Sato, Osamu Eryu
Summary: In this study, a fixed abrasive wheel for solid phase chemical-mechanical polishing (SPCMP) was developed to successfully sharpen the cutting edge of cemented carbide (WC-Co) tools and remove latent flaws. SPCMP method can remove latent scratches from the surfaces of WC-Co materials, as well as reduce wear rate and extend the service life of the tools.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Physical
Masaki Tahara, Kazuya Hasunuma, Hideki Hosoda
Summary: This study investigated the decomposition process of the isothermal alpha '' phase in beta-Ti alloys, and found that the resulting alpha + beta dual phase inherited the microstructural characteristics of the alpha ''(iso) phase. The research results indicate the existence of a strict variant selection rule between the decomposed alpha and beta phases, with a specific variant combination observed.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Maxim Ozerov, Vitaly Sokolovsky, Sergey Nadezhdin, Ekaterina Zubareva, Nadezhda Zherebtsova, Nikita Stepanov, Lujun Huang, Sergey Zherebtsov
Summary: The TiZrNb metal-matrix composites reinforced by in-situ formed borides were produced using different amounts of TiB2. The composites exhibited varying microstructures and mechanical properties with the increase in boride content. Load transfer strengthening was found to be the main contributor to the overall strength of the composite. The biocompatibility evaluation suggested a decrease in the proliferation rate of mesenchymal stem cells with an increase in boride content.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Biochemistry & Molecular Biology
Elisabetta Esposito, Laura Calderan, Andrea Galvan, Enrica Cappellozza, Markus Drechsler, Paolo Mariani, Alessia Pepe, Maddalena Sguizzato, Enrico Vigato, Edoardo Dalla Pozza, Manuela Malatesta
Summary: This study investigated the transdermal fate of ethosomes and transethosomes on human skin. The results showed that the vesicle penetration capability was influenced by their physical-chemical features, with different vesicles reaching different levels of the skin. This offers potential for tailored transdermal drug delivery based on specific cutaneous pathologies.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Materials Science, Ceramics
S. V. Vasiliev, T. V. Tsvetkov, K. A. Svyrydova, V. M. Tkachenko, A. S. Aronin, V. I. Tkatch
Summary: The changes in structure and mechanical characteristics of amorphous Al86Ni9Gd5 melt-spun ribbons under linear heating were studied. The results showed non-monotonic changes in mechanical characteristics due to structural variations during a three-stage transformation process. Nanocrystallization resulted in a decrease in all measured properties, while formation of intermetallic compounds and coarsening of structure led to partial recovery. Microhardness reached a maximum in samples with partially crystallized structure. The potential for practical applications of plasticity recovery and high microhardness was discussed.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Materials Science, Multidisciplinary
Soban Muddassir Dar, Yutao Zhao, Xizhou Kai, Zhuangzhuang Xu
Summary: This study investigated the microstructures, mechanical properties, and strain hardening properties of 1 vol% and 2 vol% (Al3Zr/Al2O3 + ZrB2) nanoparticles reinforced 6016Al matrix composites, which were synthesized through in-situ chemical reaction and solidified under squeezing pressure. It was found that Fe-B-rich and AlB2 phase particles were also formed in addition to the reinforcement particles. The matrix of the 1 vol%-6016Al composite exhibited fine Mg2Si precipitates under high squeezing pressure, while the matrix of the 2 vol%-6016Al composite did not show such precipitates. The squeezed 1 vol%-6016Al composite also had a greater reduction in grain size compared to the squeezed 2 vol%-6016Al composite. The squeezed 6016Al matrix composites exhibited high strength, high ductility, and lower strain hardening effect in the aged state, which was different from monolithic 6016Al alloys.
MATERIALS CHARACTERIZATION
(2023)
Article
Chemistry, Physical
Munmun Basak, Md Lutfor Rahman, Md Farid Ahmed, Bristy Biswas, Nahid Sharmin
Summary: Cobalt ferrite nanoparticles were synthesized using co-precipitation technique with different precipitating agents, affecting the structure and size distribution. Various analysis methods showed highly correlated results, with SSP method being the most compatible.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Kamila Hyra, Pawel M. Nuckowski, Joanna Willner, Tomasz Suponik, Dawid Franke, Miroslawa Pawlyta, Krzysztof Matus, Waldemar Kwasny
Summary: The article assesses the solutions and dried residues from the bioleaching process of PCB using Acidithiobacillus ferrooxidans. The analysis of the residues showed a difference in the component oxidation, with the leachate consisting mainly of amorphous particles and the control solution showing crystalline components. The investigation confirmed the activity of A. ferrooxidans bacteria in solubilizing electronic waste components.
Article
Chemistry, Physical
Okkyun Seo, Jaemyung Kim, Jiayi Tang, L. S. R. Kumara, Koji Kimoto, Kazushi Miki, Akifumi Matsuda, Mamoru Yoshimoto, Osami Sakata
Summary: This research focuses on the influence of atomic arrangement on the electrical and catalytic properties of oxide thin films. The atomic arrangement of LiNiO2 thin films was investigated by uniaxial compression and annealing at 600℃ on sapphire substrates. Thin films with a rock-salt structure were grown using pulsed laser deposition method at room temperature. It was observed that the as-grown thin films transformed from a rock-salt to a layered structure after uniaxial compression at 600℃, and the layer thickness of the latter structure increased with increasing uniaxial compression pressure. Uniaxial compression provides a useful tool for oxide thin film research, contributing to the development of new functional oxide materials and adjustment of the atomic ordering of cation materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Food Science & Technology
Kotaro Matsui, Takamichi Kamigaki, Ryota Wakui, Yuri Nishino, Yoshiko Ito, Atsuo Miyazawa, Koichiro Yoshioka, Makoto Shiota
Summary: The physical properties of butter are influenced by its microstructure, and a novel observation method using AFM without pretreatment process was proposed in this study to observe the fat crystal structure. Measurements of milk fat-crystalline nanoplatelets were conducted using TEM and SAXS, revealing the thickness and structure of the fat crystals. Through this observation method, the relationship between the physical properties of butter and its fat crystal network can be discerned, benefiting the bread and confectionery industries in improving butter processing conditions.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
S. Jublot-Leclerc, G. Bouhali, F. Pallier, A. Declemy
Summary: The study found that at low He concentrations, increasing implantation temperature led to enhanced point defect recombination at RT, resulting in lower strain. However, when He concentration exceeded a certain level, thermally activated mechanisms promoting the formation of He-V complexes overcame point defect recombination, leading to increased strain and damage accumulation.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Jacob Obitso Nielsen, Flemming Bjerg Grumsen, Karen Pantleon
Summary: This study investigates the evolution of crystallite size and microstrain in ferrite in real time using energy-dispersive synchrotron diffraction, providing insights into the thermal stability and phase transformations of iron-carbon coatings.
MATERIALS CHARACTERIZATION
(2021)
Article
Chemistry, Physical
Subodh Shrivastava, Shubhra Mathur, Nutan Sharma, Ankit Kumar Vishwakarma, Chagan Lal Saini, S. P. Nehra
Summary: In this study, conducting MWNT/PANI nanocomposite was successfully synthesized using in-situ oxidative polymerization at low temperatures. The physicochemical properties of the nanocomposite were characterized, and the effect of MWNT loading on the gas sensing properties for hydrogen gas was analyzed. The results showed that the addition of MWNT improved the crystallite, conductivity, stability, and morphology of the composite material. The MWNT/PANI thin film sensor demonstrated high sensitivity and fast response for hydrogen gas detection at low temperatures.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Materials Science, Ceramics
H. Plaisantin, J. Danet, I. Berdoyes, G. Laduye, A. Desenfant, G. Chollon
Summary: Chemical vapor deposited SiC coatings were examined using X-ray diffraction, Raman microspectroscopy, and transmission electron microscopy. Different (micro)structures were observed based on specific preparation conditions, showing varying levels of disorder. The coatings exhibited a columnar morphology with a preferred orientation and a faulted cubic structure.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Nanoscience & Nanotechnology
Saif Haider Kayani, Sangeun Park, Jung Gi Kim, Jae Bok Seol, Hyokyung Sung
Summary: In this study, the existence of chemical short-range order (CSRO) in high-Mn austenitic steel is demonstrated using electron diffraction measurements and dark field imaging via transmission electron microscopy. The CSRO induces additional diffuse scattering and lattice distortions in the steel samples.
SCRIPTA MATERIALIA
(2022)
Article
Engineering, Mechanical
Yuefeng Du, Zhenyu Zhang, Dong Wang, Lezhen Zhang, Junfeng Cui, Yapeng Chen, Mingliang Wu, Ruiyang Kang, Yunxiang Lu, Jinhong Yu, Nan Jiang
Summary: An improved method was used to fabricate highly aligned graphene-epoxy composites (AGEC) with horizontally oriented structure, which exhibited excellent tribological performance according to frictional tests results. This study highlights the potential of expanding the tribological applications of graphene-epoxy composites based on the excellent tribological properties of AGEC.
Article
Chemistry, Physical
Shengcheng Shu, Qiang Zhang, Joerg Ihde, Qilong Yuan, Wen Dai, Mingliang Wu, Dan Dai, Ke Yang, Bo Wang, Chen Xue, Hongbing Ma, Xu Zhang, Jiemin Han, Xuyuan Chen, Cheng-Te Lin, Wanbin Ren, Yifei Ma, Nan Jiang
Summary: Graphene has shown promise as an effective reinforcement for metal matrix composites due to its exceptional properties, but achieving uniform dispersion remains a challenge. A gel-assisted route was designed to produce graphene-reinforced copper matrix composites with significantly enhanced mechanical properties, low friction coefficient, and improved wear resistance, offering a new solution for mass production of graphene-based composites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Junfeng Cui, Zhenyu Zhang, Le Lv, Kazuhito Nishimura, Guoxin Chen, Nan Jiang
Summary: The self-attraction of nanowires can lead to clustering in high density and potential short circuits in devices. A versatile method for investigating this phenomenon was developed, revealing a two-stage mechanism for SiC nanowires. The charge density and Hamaker constant play key roles in nanowire attraction.
Article
Materials Science, Composites
Yue Qin, Bo Wang, Xiao Hou, Linhong Li, Chunlong Guan, Zhongbin Pan, Maohua Li, Yuefeng Du, Yunxiang Lu, Xianzhe Wei, Shaoyang Xiong, Guichen Song, Chen Xue, Wen Dai, Cheng-Te Lin, Jian Yi, Nan Jiang, Jinhong Yu
Summary: Polymer composites with high thermal conductivity are in high demand for electronic packaging fields due to their light weight, easy process, and high chemical resistance. The development of a novel hybrid filler structure, similar to a Tanghulu-like structure, has shown to significantly enhance thermal conductivity and heat transportation performance in the polymer composites, representing a promising strategy for future applications in electronic packaging.
COMPOSITES COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Yunxiang Lu, Bo Wang, Qing Mu, Ke Yang, He Li, Andreas Rosenkranz, Nan Jiang, Ping Zhou
Summary: This study successfully fabricated smooth and damage-free diamond surfaces using a vitrified bonded diamond wheel. The results from grinding speed, atomic force microscopy, and transmission electron microscopy demonstrated the significant influence of grinding conditions on the surface quality and subsurface damage of diamond.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Chemistry, Physical
Stephan Tremmel, Xiongxin Luo, Benedict Rothammer, Armin Seynstahl, Bo Wang, Andreas Rosenkranz, Max Marian, Laipan Zhu
Summary: This study investigates the performance of protective thin films on the wear-prone PTFE surface of TENGs, including doped and undoped DLC films, MoS2 coatings, and MXene films. MXenes showed superior performance in contact separation mode, while undoped a-C: H coatings performed well in sliding mode. Long-term tests showed minimal wear on the films, with output reduction primarily due to graphitization and material transfer.
Article
Engineering, Manufacturing
Zhenyu Zhang, Xin Wang, Fanning Meng, Dongdong Liu, Siling Huang, Junfeng Cui, Jianmei Wang, Wei Wen
Summary: This study investigates the formation and evolution mechanism of cracks in silicon using molecular dynamics simulations. Through experimental and simulated nanocutting, it reveals the conditions for crack initiation and propagation in silicon and the formation of a funnel-shaped structure. These findings provide important insights for avoiding catastrophic fracture and preserving the stability and longevity of high-performance devices based on brittle materials.
JOURNAL OF MANUFACTURING PROCESSES
(2022)
Article
Materials Science, Multidisciplinary
Jose Y. Aguilar Hurtado, Philipp G. Gruetzmacher, Javier Marques Henriquez, Dario Zambrano, Bo Wang, Andreas Rosenkranz
Summary: Multilayer Ti3C2TX nanosheets have gained attention due to their ability to form beneficial tribolayers. This study compares the solid lubrication ability of spray-coated few- or multilayer Ti3C2Tx coatings and finds that multilayer Ti3C2Tx nanosheets exhibit superior tribological performance compared to few-layer MXenes, which show continuously rising frictional values.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Junfeng Cui, Liang Ma, Guoxin Chen, Nan Jiang, Peiling Ke, Yingying Yang, Shiliang Wang, Kazuhito Nishimura, Javier Llorca
Summary: This article reports the abnormal phenomenon that twin boundaries weaken the strength of body-centered cubic (BCC) tungsten. [1-11]-oriented W nanowires with (121) twin planes and free of dislocations were fabricated, and in situ tensile tests were performed. The fracture strength of the twinned W nanowire was found to be 13.7 GPa, 16% lower than that of the single-crystal W nanowire (16.3 GPa). The weakening mechanism was revealed to be the early nucleation of a crack at the intersection of the twin boundary with the surface.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Chemistry, Multidisciplinary
Shanshan Guo, Baomin Wang, Daniel Wolf, Axel Lubk, Weixing Xia, Mingkun Wang, Yao Xiao, Junfeng Cui, Dhanapal Pravarthana, Zehua Dou, Karin Leistner, Run-Wei Li, Ruben Huehne, Kornelius Nielsch
Summary: This study successfully achieved hierarchical La0.7Sr0.3MnO3 thin films with well-defined crystallographic orientations, which significantly broadened the temperature range of the magnetic transition and extended the working window of colossal magnetoresistance. The findings suggest a promising approach for altering magnetic transitions and enhancing phase-transition-related effects in functional oxides.
Article
Chemistry, Multidisciplinary
Junfeng Cui, Yang Sun, Huixin Chen, Yingying Yang, Guoxin Chen, Peiling Ke, Kazuhito Nishimura, Yong Yang, Chun Tang, Nan Jiang
Summary: This study reports the automatic self-healing capability of silicon nanowires, which are important building blocks for high-performance semiconductor nanodevices. Through in situ transmission electron microscopy tensile tests, a recovery of fracture strength (10.1%) on fractured silicon nanowires is achieved. Atomic-resolution characterizations and atomistic simulations reveal the self-healing mechanism and factors affecting the self-healing efficiency. Spontaneous rebonding, atomic rearrangement, and van der Waals attraction are responsible for the self-healing in silicon nanowires. The findings shed light on the self-healing mechanism of silicon nanowires and provide insights into developing high-lifetime and high-security semiconductor devices.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Physical
Yue Xia, Yunxiang Lu, Guoyong Yang, Chengke Chen, Xiaojun Hu, Hui Song, Lifen Deng, Yuezhong Wang, Jian Yi, Bo Wang
Summary: Nano-crystalline diamond has been extensively researched and applied in various fields, including tribology, optics, quantum information and biomedicine. It outperforms other materials in terms of wear resistance due to its hardness. Nano-crystalline diamond coatings can have a friction coefficient as low as single-crystal diamonds, making them ideal for friction reduction and wear resistance.
Article
Chemistry, Physical
Junfeng Cui, Qilong Yuan, Wei Wang, Guoxin Chen, Peiling Ke, Wenrui Zhang, Kazuhito Nishimura, Nan Jiang
Summary: In this study, epsilon-Ga2O3 thin films with columnar crystals and partial unoccupied Ga sites were synthesized, and it was found that the submicron-scale epsilon-Ga2O3 could withstand an ultra-large plastic strain without cracking. This discovery has important implications for the applications of Ga2O3 in micro- or nano-electronic and optoelectronic devices.
Article
Chemistry, Physical
Linhong Li, Maohua Li, Zihui Zhang, Yue Qin, Xiaoxue Shui, Juncheng Xia, Shaoyang Xiong, Bo Wang, Zhenbang Zhang, Xianzhe Wei, Xiangdong Kong, Ping Gong, Tao Cai, Zhongbin Pan, Yong Li, Jinchen Fan, Cheng-Te Lin, Nan Jiang, Jinhong Yu
Summary: Simultaneously achieving high thermal transportation performance and superior mechanical properties in a thermal management composite film is a significant challenge. In this study, hybrid nano and micro-diamonds were introduced to cellulose nanofibers and boron nitride nanosheets to construct a long-range ordered sandwiched structure. The resulting composite film exhibits high thermal conductivity, robust mechanical properties, and excellent electrical insulation performance.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Multidisciplinary
Linhai Wang, Dongdong Liu, Fan Zhang, Zhenyu Zhang, Junfeng Cui, Zhenghao Jia, Zhibin Yu, Yiqiang Lv, Wei Liu
Summary: This study explores the charging effects in transmission electron microscopy, using a defocus estimation algorithm and image feature tracking to quantitatively analyze the image drifting dynamics induced by charging. It provides insights into the dynamic modulation of electron beam propagation by the competition between charging and discharging, enriching understanding of such effects. Specific attention to conductivity control on TEM specimens is emphasized beyond instrumental improvements.
NANOSCALE ADVANCES
(2021)
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)