Article
Chemistry, Physical
S. Jayasathyakawin, M. Ravichandran, Sikiru Oluwarotimi Ismail, G. Veerappan
Summary: Magnesium (Mg)-based composites offer excellent properties for various applications. This study focused on synthesizing Mg-Al-ZnO composites and analyzing their microstructures and properties. ZnO particles were uniformly distributed in the composite samples. The selection of composite samples for friction and wear applications should be based on their different responses to friction and wear.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Ajit Kumar, Pulak M. Pandey
Summary: By optimizing the microwave sintering parameters of Mg3Zn1Ca15Nb, the study improved the mechanical and bio-corrosion properties of the material. The samples sintered using microwave route showed advantages in bio-corrosion behavior, but still lagged behind in mechanical properties compared to conventionally sintered samples.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Jialong Kang, Yaoran Cui, Jingjing Song, Hongxia Mao, Guibao Qiu, Zhenyun Tian, Feng Zhang
Summary: The use of SiC as a reinforcing agent in porous titanium materials can significantly improve their mechanical properties, with the compressive strength reaching its peak when the SiC content is 3wt.%. This study demonstrates that the addition of SiC enhances the densification, sintering properties, hardness, and strength of porous titanium.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
S. Jayasathyakawin, M. Ravichandran, Sikiru Oluwarotimi Ismail, D. Srinivasan
Summary: This study investigated the microstructure and properties of magnesium alloy (Mg/3Al)-based composites reinforced with hydroxyapatite (HA) using powder metallurgy (PM) method. The addition of HA increased the mechanical strength of the Mg/3Al alloy. The optimal parameters for minimal wear rate and coefficient of friction were determined using the Taguchi method.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Jozef Minda, Stanislava Fintova, Branislav Hadzima, Pavel Dolezal, Michaela Hasonova, Leos Doskocil, Jaromir Wasserbauer
Summary: Pure Mg samples were prepared by powder metallurgy using cold and hot compacting methods, with hot compacted samples showing longer corrosion resistance and uniform corrosion behavior compared to cold compacted samples. The difference in corrosion behavior was mainly related to the different binding mechanisms during compaction.
Article
Materials Science, Multidisciplinary
P. M. Gopal, K. Soorya Prakash, Emad Makki, V. Kavimani, Jayant Giri, T. Sathish
Summary: Higher silica content CRT panel glass is used as reinforcement material in magnesium matrix composites. Wear resistant magnesium hybrid composite is formulated by reinforcing silica rich E-waste CRT panel glass powder and boron nitride solid lubricant. The addition of CRT and BN content enhances the hardness and wear resistance of the composite, but excessive addition increases the porosity. Moreover, the addition of CRT and BN improves the corrosion behavior of the material.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Virat Khanna, Vanish Kumar, Suneev Anil Bansal, Chander Prakash, Mohd Ubaidullah, Shoyebmohamad F. Shaikh, Alokesh Pramanik, Animesh Basak, S. Shankar
Summary: This study aimed to develop an Al-GNP composite to improve its mechanical properties. A series of Al-GNP composites were fabricated by varying the levels of GNPs, and the best enhancement in mechanical properties was achieved with 0.5 wt% GNP doping.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Ajit Kumar, Pulak M. Pandey
Summary: The study focuses on the development of a modular die setup for performing pressure-assisted sintering of Mg3Zn1Ca15Nb in a tubular heating furnace. The customized die setup allows for the application of pressure to the green compact of Mg3Zn1Ca15Nb. The results show that the application of spring load during sintering improves the mechanical and anti-corrosion properties of the less compacted samples.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Materials Science, Multidisciplinary
Elumalai Pc, Ganesh Radhakrishnan, Shankar Emarose
Summary: In this study, monolithic pure magnesium and magnesium composites with different proportions of TiO2 nanoparticles were synthesized using powder metallurgy technique and processed by two-stage hybrid microwave sintering and hot extrusion. The results showed that the mass density and microhardness of the composite materials increased steadily with the addition of TiO2 nanoparticles, with the Mg5TiO2 composite exhibiting the highest compressive strength.
MATERIALS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Yoshihito Kawamura, Fuka Shimada, Kazuma Hamade, Shotaro Ueno, Shinn-ichi Inoue
Summary: We investigated the alloy composition suitable for rapidly solidified powder metallurgy (RS PM) processing of Mg-Ca-Zn alloys and developed biomedical Mg-Ca-Zn RS PM alloys with high strength, high ductility, and high corrosion resistance. An Mg-1.0 Ca-0.5 Zn RS PM alloy with combined additions of 0.1 at% Y and 0.03 at% Mn exhibited excellent performance, surpassing previous IM alloys, with a tensile yield strength of 376 ±17 MPa, an elongation of 14.1 ±3.1 %, and a corrosion rate of 0.46 ±0.04 mm ꞏyear-1 when immersed in HBSS.
MATERIALS TRANSACTIONS
(2023)
Article
Chemistry, Physical
S. Jayasathyakawin, M. Ravichandran
Summary: In this study, Silicon Carbide (SiC) reinforced Mg-3 wt% Al alloy matrix composites were developed and their physical and mechanical properties were analyzed. The experimental results showed that the addition of SiC improved the density, hardness, and compressive strength of the composites, while reducing the corrosion rate.
Article
Chemistry, Physical
Yunpeng Hu, Delong Dong, Xiangyu Wang, Hongtang Chen, Yang Qiao
Summary: The study found that increasing manganese content in Mg-Mn-Zn alloys improved their mechanical properties and corrosion resistance. Among the tested alloys, Mg-1.0Mn-2.0Zn showed the best performance and is more suitable for use in human body fluids.
Article
Nanoscience & Nanotechnology
Y. Z. Tian, S. Y. Peng, Y. Yang, X. Y. Pang, S. Li, M. Jiang, H. X. Li, J. W. Wang, G. W. Qin
Summary: In this study, Cu-10Fe composite was prepared by powder rolling strategy and cold rolling for further investigation of its composition distribution, microstructure evolution, electrical property and mechanical property. The results showed that the mutual diffusion of Cu and Fe elements during the powder rolling process was well controlled, which maintained the good electrical conductivity of the Cu matrix. The homogeneous distribution of Fe particles in the Cu matrix eliminated the Fe macrosegregation phenomenon during casting. The Cu-10Fe composite exhibited a tensile strength of 507 MPa and electrical conductivity of 80.1% IACS. The strengthening mechanisms and origins of exceptional electrical properties were discussed.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Neeraj Kumar, Ashutosh Sharma, M. K. Manoj, Byungmin Ahn
Summary: This study prepared self-lubricating aluminum matrix composites using powder metallurgy technique and evaluated their wear, coefficient of friction, and corrosion resistance under different conditions. The results demonstrated that the addition of MoS2 reduced wear and coefficient of friction while improving corrosion resistance. The effects of load and reinforcement concentration were more significant.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Metallurgy & Metallurgical Engineering
Yang Yan, Xin Chu, Xier Luo, Xuemei Xu, Yu Zhang, YiLong Dai, Ding Li, Liangjian Chen, Tao Xiao, Kun Yu
Summary: This research discusses and develops a new Mg-based matrix model for high corrosion resistance and extensively modified biodegradable Mg-based alloys and composites for bone implants. The Mg-5 wt.%Zn alloy aged for 96h showed high corrosion resistance, good biocompatibility for L929, and excellent ability of maintaining sample integrity during immersion. The alloy exhibited fine-grain microstructure and uniform distributed hundred nano-sized second phases, which promoted the formation of a uniform and smooth corrosion product layer at the beginning of immersion.
JOURNAL OF MAGNESIUM AND ALLOYS
(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)