Article
Materials Science, Multidisciplinary
Shaowei Wang, Zhanyong Zhao, Peikang Bai, Wenbo Du, Liang Li
Summary: The graphene/Ti6Al4V composite prepared by selective laser melting showed that the addition of graphene significantly affected the microstructure of the composite, resulting in a finer internal structure and strong interface bonding between TiC and alpha-Ti.
Article
Chemistry, Physical
Ping Gao, Bing Tian, Jilin Xu, Yunxiang Tong, Feng Chen, Li Li
Summary: The study found that the mechanical strength and ductility of porous NiMnGa alloy were significantly enhanced after compositing with epoxy resin due to the synergistic effect between the polymer and porous alloy. The composite exhibited a martensitic transformation behavior similar to that of the porous alloy, and the constraint effect of the polymer matrix on the phase transformation of the porous alloy could be neglected.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Linmei Yang, Shiran Ma, Guowan Mu
Summary: The addition of Mo nanoparticles in Sn3.0Ag0.5Cu and Sn58Bi alloys led to the preparation of two kinds of composite lead-free solders with refined microstructures and significantly enhanced hardness. The mechanism of these effects on the microstructure and hardness was analyzed.
Article
Materials Science, Multidisciplinary
Wei Sun, Ning Cui, Shuling Zhang, Tiewei Xu, Xiaopeng Wang, Fantao Kong
Summary: A novel Ti6Al4V-Ti43Al9V metal-intermetallic-laminated (MIL) composite with unique microstructure exhibits high strength and fracture toughness.
Article
Chemistry, Physical
Y. Jiraskova, J. Bursik, O. Zivotsky, J. Lunacek, P. Alexa, R. Uhlar, J. Ederer, P. Janos
Summary: Magnetite and magnetite/ceria composites were prepared using chemical methods and underwent calcination treatment. The ceria content and calcination temperature were found to greatly affect the degradation ability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Lingyi Meng, Xiaohu Yao
Summary: Metallic glasses have short-range order but lack long-range order. The short-range order is mostly found in dominant clusters with higher local order metrics, while medium-range order is mainly represented by Bergman-type order centered on icosahedral clusters. With increasing length scale, the correlation between neighboring atoms decreases, including the icosahedral cluster network.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Paolo Barra, Gabriele Traversari, Elisa Sogne, Maria Carta, Alberto Cincotti, Andrea Falqui, Francesco Delogu
Summary: This study investigated the effects of ultrasonic irradiation on nanoporous gold structures and found that it induces coarsening similar to the process of annealing.
Review
Chemistry, Multidisciplinary
Tianyao Gong, Kelly K. K. Rudman, Baichuan Guo, Anthony Shoji Hall
Summary: This article discusses the potential of electrochemical methods for synthesizing ordered intermetallics at room temperature and atmospheric pressure. Electrochemical dealloying and electrochemical deposition methods have proven to be effective in synthesizing phases that are typically inaccessible under ambient conditions. The electrocatalytic performance of these intermetallics was also assessed and showed improved performance compared to commercial Pd/C and Pt/C catalysts, with lower coverages of spectator species. Furthermore, these materials exhibited improved methanol tolerance.
ACCOUNTS OF CHEMICAL RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Qi-Zhi Jiang, Zhi-Ming Wang, Zhi-Ping Sun, Bing-Rong Zhang, Wei-Feng Rao
Summary: In the liquid-solid composite process, ultrasonic vibration can break the oxide film on the solid alloy surface, promoting the contact and wetting between liquid and solid alloys, leading to metallurgical bonding.
Article
Chemistry, Physical
Tao Liu, Ji-Bing Sun, Jun He, Jun Zhou, Zheng-Yan Zhang, Wei-Dong Shi
Summary: In this study, the effect of a new multi-element V-Fe-Ti-Nb-C-Zr-B ribbon inoculant on the microstructure and mechanical properties of high chromium cast iron (HCCI) was investigated. It was found that the inoculant influenced the morphology and size of M7C3 carbides in the melt and can refine the alloy microstructure and enhance its hardness by altering grain size and reducing carbide formation in the as-cast alloy. Moreover, the heat-treated alloy showed improvements in impact toughness, friction coefficient, and wear loss.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Sunil Kumar Tiwari, Akula Umamaheswara Rao, Vipin Chawla, Paritosh Dubey, Vikas Saxena, Amit K. Chawla, Devesh Kumar Avasthi
Summary: Ni3Al and Nickel-rich Ni3Al thin films were deposited on Si substrates using magnetron sputtering and co-sputtering processes. The effects of Ni enrichment on the elemental composition, microstructure, surface topography, and mechanical properties were investigated. The results showed that the hardness and young's modulus decreased with increasing Ni content, while the surface roughness affected the hydrophobic properties. The study demonstrated that surface roughness, microstructure, and elemental composition influenced the mechanical and hydrophobic properties of the Ni3Al coatings.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Coatings & Films
Sirikarn Sattawitchayapit, Visittapong Yordsri, Papan Panyavan, Tongjai Chookajorn
Summary: Nanostructured Nickel and Nickel-Cobalt coatings were synthesized by electrodeposition across the Co composition range of 0-83 wt%. The study investigated the effects of alloying level on surface morphology, microstructure, and phase formation. Results showed an increase in hardness with Co addition, but further Co addition led to phase change and decreased hardness despite smaller grain sizes.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Mengzhao Ding, Xuelong Miao, Lijie Cao, Chaomin Zhang, Yunxia Ping
Summary: By synthesizing the SiO2@a-TiO2@Ag composite, with a core-shell structure, where the a-TiO2 layer exhibits elastic behavior and Ag nanoparticles serve as good conductors, excellent lithium storage properties were demonstrated.
Article
Materials Science, Multidisciplinary
Dongping Fan, Yuxiang Teng, Chongchong Wang, Dongdong Xu
Summary: Large-size Pd nanosheets-assembled nano-films with structural advantages were synthesized, exhibiting excellent electrocatalytic performance for ethanol oxidation, including larger electrochemical active surface areas, excellent mass activity, better CO anti-poisoning ability and stability. This work may offer a novel idea for designing and synthesizing high-efficient electrocatalysts.
Article
Materials Science, Multidisciplinary
S. Sha, J. Chang, S. S. Xu, P. X. Yan, B. Wei
Summary: In this study, the microstructural dependence of magnetic property for hypereutectic Co62Mo38 alloy was investigated by undercooling the alloy using electromagnetic levitation and drop tube techniques. The results showed that as the undercooling increased, the alloy exhibited significant changes in magnetic properties, with a decrease in saturation magnetization and a reduction in coercive force. At small undercoolings, the alloy consisted mainly of lath-shaped primary epsilon-Co7Mo6 dendrites, while at higher undercoolings, the volume fraction of alpha-Co phase decreased continuously.
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)