Article
Chemistry, Multidisciplinary
Ying Song, Weiwei Liu, Yufeng Sun, Shaokang Guan, Yao Chen
Summary: The titanium alloy composite reinforced with graphene oxide nanosheets achieved weight reduction and strength improvement, showing a better overall performance.
Article
Chemistry, Physical
Tomila M. Vidyuk, Dina Dudina, Michail A. Korchagin, Alexander Gavrilov, Arina Ukhina, Uliana E. Bulanova, Mikhail A. Legan, Aleksey N. Novoselov, Maksim A. Esikov, Alexander G. Anisimov
Summary: This article presents the features of in-situ synthesis, microstructure evolution, and mechanical properties of TiC-Cu composites obtained by mechanical milling and spark plasma sintering (SPS). Different carbon sources were compared for their influence on the composite mixtures, with the conclusion that carbon black and nanodiamonds facilitate faster conversion of reactants compared to graphite. The TiC-Cu composite obtained showed a relative density of 95%, impressive strength and hardness properties, and an unconventional microstructure.
SURFACES AND INTERFACES
(2021)
Article
Chemistry, Physical
Shiqi Zhou, Wei Zhang, Mabao Liu, Weijia Ren, Qihang Zhou, Jiarui Wei, Pengfei Wu
Summary: In this study, nickel matrix composites reinforced with hybrid graphene nanoplatelets (GNPs) and titanium diboride (TiB2) particles were fabricated using a two-step 3D vibration milling strategy. The introduction of the hybrid GNPs-TiB2 resulted in significantly improved tensile strength and maintained fracture elongation of the composites, demonstrating a better combination of strength and ductility compared to individual GNPs or TiB2 reinforced Ni-based composites. The composites also exhibited a high toughness modulus attributed to the improved strain hardening capacity and GNPs-induced bridging and pull-out effects.
Article
Materials Science, Ceramics
Yifan Yang, Tianbin Zhu, Ning Liao, Yawei Li, Xiong Liang, Zhipeng Xie, Shaobai Sang, Jinning Dai
Summary: This study successfully fabricated high performance SiC-based composites using oscillatory pressure assisted sintering (OPS) and 0.5 wt% graphene nanoplatelets (GNPs) as reinforced agents. The relative density and mean grain size of the composites increased as the sintering temperature increased. The SiC-GNPs composites fabricated by OPS showed improved mechanical properties compared to data obtained by other sintering methods. The crucial toughening mechanisms of crack deflection, crack branching, crack bridging, and GNPs bridging were also confirmed.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Jiashi Yu, Qinyang Zhao, Shixing Huang, Yongqing Zhao, Yue Zhou, Jinwen Lu, Longlong Dong, Yusheng Zhang
Summary: Graphene nanoplates are widely used in titanium matrix composite manufacturing due to their superior mechanical properties. The study showed that sintering temperature greatly influences the interfacial structures and comprehensive mechanical properties of the composites, with 1000 degrees Celsius being the optimal SPS temperature.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Metallurgy & Metallurgical Engineering
Lin Zhangqian, Zheng Wei, Li Hao, Wang Dongjun
Summary: The study investigated the effects of sintering parameters on the microstructure and mechanical properties of TA15 titanium alloy fabricated via spark plasma sintering, showing that sintering temperature and time have a significant impact on microstructure while sintering pressure has minimal effect. Densification of TA15 titanium alloy can be achieved effectively with appropriate sintering conditions, and graphene-reinforced TA15 composites exhibit significantly improved mechanical properties compared to the titanium alloy.
ACTA METALLURGICA SINICA
(2021)
Article
Biochemistry & Molecular Biology
Bingxian Ou, Lixin Lu, Qinsheng Wang, Qing He, YiLin Xie, Junxia Yan
Summary: Titanium matrix composites reinforced by graphene exhibit excellent mechanical properties, and the addition of graphene nanosheets can improve the microstructure and mechanical properties of the composites.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Nanoscience & Nanotechnology
Qiang Wang, Zhao-Hui Zhang, Xian-Yu Li, Luo-Jin Liu, Xiao-Tong Jia, Yang-Yu He, Zhao-Hu Jia, Tian-Hao Xu, Xing-Wang Cheng
Summary: This study successfully synthesized Ti6Al4V composites with aligned TiB whiskers using the SPSHE method, and investigated the effects of deformation temperature and deformation amount on the microstructure and tensile properties of the composites. The results showed that the orientation of TiB whiskers became gradually consistent with increasing deformation, and the introduction of TiB whiskers improved the strength and ductility of the composites.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Chemistry, Physical
Yuanmeng Wang, Ming Zhu, Longlong Dong, Guodong Sun, Wei Zhang, Hang Xue, Yongqing Fu, Ahmed Elmarakbi, Yusheng Zhang
Summary: Powder metallurgy methods are used to synthesize titanium matrix composites with exceptional mechanical properties. In this study, TiC/Ti-6Al-4V matrix composites were synthesized using a cost-effective and high-performance method and characterized. The addition of graphene nanoplates (GNPs) resulted in smaller grain size and improved mechanical properties of the composites. The strength of the composites was mainly attributed to grain refinement, precipitation of secondary phases, and dislocations strengthening. This work provides a new methodology for fabricating high-performance titanium matrix composites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Qiang Wang, Zhao-Hui Zhang, Luo-Jin Liu, Xiao-Tong Jia, Yang-Yu He, Yuan-Hao Sun, Xing-Wang Cheng
Summary: TiB/Ti6Al4V composite was prepared using spark plasma sintering followed by bidirectional reaction hot rolling. TiB whiskers were synthesized in situ during the rolling process, achieving high strength and ductility in the composite.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Yanhua Guo, Jiaqiang Huang, Kui Yu, Guoqing Dai, Zhonggang Sun, Hui Chang
Summary: This study fabricated 0.5 wt% Ni-P@GNF/ Ti-6Al-4V composites with different particle sizes using chemical nickel plating and plasma sintering, and found that the addition of graphene nanosheets improved the compressive strength of Ti-6Al-4V. With increasing spherical powder particle size, the size of the reinforcing phase of the network structure coarsened and the plasticity was enhanced.
MATERIALS CHARACTERIZATION
(2022)
Article
Metallurgy & Metallurgical Engineering
Zhong Zheng, Xiao-xia Yang, Jian-chao Li, Xue-xi Zhang, Imran Muhammad, Lin Geng
Summary: The aluminum matrix composites with dispersed GNPs exhibited significantly improved mechanical properties compared to the pure aluminum matrix, attributed to the effective load transfer capacity of dispersed GNPs introduced via high-energy ball milling, spark plasma sintering, and hot extrusion techniques.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2021)
Article
Materials Science, Multidisciplinary
Lan Zhang, Mingyuan Li, Jidong Zhang, Zixuan Chen, Huizhong Ma
Summary: This study systematically investigated the effects of GNPs content on the microstructure, mechanical properties, and wear resistance of Ti-6Fe-xGNPs composites. The addition of GNPs significantly enhanced the strength and wear resistance of the composites. Some GNPs were retained in the SPS process, while the remaining GNPs reacted with Ti to form a new TiC phase. The strengthening mechanism includes grain refinement, Fe solid solution strengthening, and TiC dispersion strengthening.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Nanoscience & Nanotechnology
Jiahua Zhu, Yuanfei Cai, Yan Zhang, Xiaodi Liu, Jinseng Tian, Jiang Ma, Jun Shen
Summary: The FeSiB-rich particle-reinforced Cu metal matrix composites were successfully fabricated using the spark plasma sintering technique. The composites showed significantly enhanced strength without sacrificing ductility, which was mainly attributed to the homogeneously distributed reinforcements and high interfacial strength.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Chemistry, Physical
Yu Hong, Jiaqin Liu, Yucheng Wu
Summary: The study prepared 50 vol% SiC/Al composites with different SiC particle size and Al alloy composition using Spark Plasma Sintering. The thermal properties, microstructures, and interface reaction products of the composites were investigated. The optimization of composite components and sintering process parameters were conducted. It was found that SiC particle size and sintering process parameters were crucial for obtaining high thermal-mechanical properties of the composites. The best physical properties were achieved in the 16 μm SiC/6061Al composites sintered at 50 MPa, 8 min, and 520°C, with bending strength of 649 MPa, thermal conductivity of 189 W/(m·K), and coefficient of thermal expansion of 7.9×10-6 K-1 at 50-100°C. XRD and SEM analysis revealed the absence of hazardous reaction product Al4C3 at the interface and the growth of MgAl2O4 and Mg2Si together at the interface.
JOURNAL OF ALLOYS AND COMPOUNDS
(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)