Article
Materials Science, Multidisciplinary
X. J. Jiang, S. Z. Wang, H. Fu, G. Y. Chen, Q. X. Ran, S. Q. Wang, R. H. Han
Summary: The study demonstrates that TiZrAlNbCo high-entropy alloy coating deposited on Ti-6Al-4V alloy exhibits higher hardness and better corrosion resistance compared to TiZrAlNb alloy coating, with a finer microstructure. The presence of FCC phase in TiZrAlNbCo alloy coating is the fundamental reason for the optimization of microstructure and improvement in performance.
Article
Chemistry, Physical
Mingtian Tan, Long Meng, Chun Lin, Lingsheng Ke, Yudong Liu, Jingkui Qu, Tao Qi
Summary: The effects of Si on the microstructures and properties of Co0.2CrAlSixNi high entropy alloys were investigated. Si doping led to the precipitation of Cr3Si phase and a decrease in crystallite size. Si also influenced the hardness and corrosion resistance of the alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Zhaopeng Tong, Wenbin Wan, Wangfan Zhou, YunXia Ye, Jiafei Jiao, Xudong Ren
Summary: In this study, the CrMnFeCoNi high-entropy alloy (HEA) was successfully synthesized using laser melting deposition (LMD) method, and its microstructure, microhardness, and residual stress were characterized. The results showed that the tensile properties and hot corrosion behavior of the material were influenced by the tensile loading direction, and the chlorine and sulfur ions in the salt also affected its hot corrosion resistance.
Article
Materials Science, Multidisciplinary
Chuanqiang Li, Yuansong Deng, Mincong Chen, Biliang Yuan, Yong Dong, Changjian Yan
Summary: In this study, the microstructure and corrosion resistance of as-cast, as-SLMed, and as-annealed Al0.3CoCrFeNiCu high-entropy alloy were compared. The results showed that the SLM technique effectively reduced Cu segregation and precipitated nano-sized L12 ordered phases in the as-annealed samples. The corrosion performance followed the order of as-cast < as-SLMed < as-annealed in 3.5% NaCl solution. The elimination of Cu-rich phase and the fine microstructure in the as-SLMed sample resulted in minimal micro-galvanic corrosion and enhanced corrosion resistance. Additionally, the precipitated L12 ordered phases in the as-annealed sample further improved the corrosion resistance of the as-SLMed sample.
Article
Chemistry, Physical
Kaiheng Xiao, Mingao Li, Meiran Li, Ruyun Dai, Zhonglin Hou, Jun Qiao
Summary: Different micro-nano structures were fabricated by femtosecond laser ablation of the surface of an AZ31 magnesium alloy at high repetition frequencies. The combination of repetition frequencies and pulse energies determines the formation of granular, cauliflower-like, and porous structures. Complex porous structures were efficiently fabricated by double-layer scan. Ablation significantly increased the surface hardness.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Tao Wang, Chao Wang, Juanjuan Li, Linjiang Chai, Chong Deng, Jun Luo, Yun Huang
Summary: In this study, a defect-free CoCrFeNiMo0.2 high entropy alloy coating with an average thickness of 990 μm was successfully prepared on an Inconel 718 substrate by laser cladding. The coating exhibited good metallurgical bonding with the substrate, improved thermal erosion resistance, outstanding wear resistance, and enhanced corrosion resistance.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Coatings & Films
Q. Qiao, V. A. M. Cristino, L. M. Tama, C. T. Kwok
Summary: In this study, silver (Ag) was surface-alloyed in TC4 alloy (Ti6Al4V) using a high-power diode laser (HPDL). The Ag content in the alloyed layers was controlled from 5 to 24 wt%. The microstructure, hardness, and corrosion properties of the alloyed layers were influenced by the Ag content. The hardness of TC4 alloy increased to a maximum value of 569 HV0.2 when laser surface-alloyed with 14 wt% Ag, but decreased to 456 HV0.2 when the Ag content was increased to 24 wt%, due to the formation of a soft Ag-rich phase. Moreover, the corrosion resistance of the laser surface-alloyed TC4 with high Ag content decreased, attributed to micro-galvanic effect between the alpha-Ti and Ti2Ag, TiAg, and Ag-rich phase.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Yacheng Fang, Pan Ma, Shuimiao Wei, Zhiyu Zhang, Dongye Yang, Hong Yang, Shiguang Wan, Konda Gokuldoss Prashanth, Yandong Jia
Summary: The trade-off between strength and ductility in alloys has been a persistent issue in engineering applications. Conventional techniques often sacrifice ductility to increase strength, while high entropy alloys with dual-phase structures exhibit excellent strength-ductility synergy.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Biliang Yuan, Chuanqiang Li, Yong Dong, Yang Yang, Peng Zhang, Zhengrong Zhang
Summary: The as-printed Al0.3CoCrFeNiCu high-entropy alloy (HEA) was successfully fabricated using selective laser melting (SLM) technology. The SLM-processed HEA exhibited a simple disordered face centered cubic solid solution with excellent mechanical properties. However, the presence of defects in the SLM alloy limits its application.
MATERIALS & DESIGN
(2022)
Article
Chemistry, Physical
Chen Cui, Meiping Wu, Xiaojin Miao, Zishuo Zhao, Yuling Gong
Summary: FeCoNiCrMo high-entropy coatings and CeO2/FeCoNiCrMo composite coatings were successfully prepared on TC4 alloy surface using laser cladding technology. The addition of CeO2 improved the corrosion resistance of the coatings by forming a stronger passive film that inhibited pitting corrosion. HEA coatings exhibited higher microhardness and improved corrosion resistance compared to TC4 alloy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Liu Li, Yunxiang Chen, Yanjin Lu, Sijie Qin, Gonghao Huang, Tingting Huang, Jinxin Lin
Summary: This study focused on improving the corrosion resistance of Ti6Al4V3Cu alloys produced by selective laser melting by fabricating antibacterial powders and applying different heat treatments. The research showed that adjusting the microstructure of the alloy through heat treatment can enhance its corrosion resistance.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
Hongling Zhang, Wenjuan Li, Huanhuan Xu, Liang Chen, Junshan Zeng, Zhibing Ding, Wenmin Guo, Bin Liu
Summary: This study aims to improve the glass formation ability of high-entropy amorphous alloys by designing Fe19.6Co19.6Ni19.6Cr19.6(B13.72Si5.88)(19.6)Y-2 alloy through microalloying. The high-entropy amorphous alloy coating exhibits excellent corrosion resistance in NaCl solution.
Article
Materials Science, Multidisciplinary
Yujiang Xie, Xiong Wen, Bensheng Huang, Jia Zhuang
Summary: In this study, the AlCoCrFeNi2.1YHf high-entropy alloy coating was prepared on 35CrMo steel by plasma cladding, and its microstructure, micro-hardness and corrosion resistance were investigated. The results demonstrate that the coating exhibits a well-defined microstructure, high micro-hardness, and excellent corrosion resistance.
Article
Materials Science, Multidisciplinary
Pengfei Gu, Tengbo Qi, Lan Chen, Tong Ge, Xudong Ren
Summary: Refractory high entropy alloys (RHEAs) have excellent heat tolerance and mechanical properties, making them a promising direction for high-temperature structural materials. In this study, bulk VNbMoTaW RHEA was fabricated using selective laser melting (SLM), and the impact of laser scanning speed on its surface morphology, internal defect, microstructure, and mechanical properties was investigated. The results showed that pores and cracks were the main defects in the SLMed VNbMoTaW RHEA, with lower scanning speeds reducing the presence of pores but the manifestation of cracks remaining inevitable. The microstructure revealed the existence of a columnar dendritic structure and a cellular structure on the top surface, while the average microhardness and compressive strength of the SLMed VNbMoTaW RHEA were higher than those processed by arc-melting.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2022)
Article
Chemistry, Physical
Yiyu Huang, Zhonghao Xie, Wenshu Li, Haoyu Chen, Bin Liu, Bingfeng Wang
Summary: In this study, dynamic impact experiments were conducted to investigate the dynamic mechanical properties of SLM-NiCrFeCoMo0.2 high entropy alloy (HEA) with different molten pool sizes. The results showed that SLM-NiCrFeCoMo0.2 HEA exhibited high impact energy absorption density and compressive strength at high strain rates. The relationship between molten pool structure and precipitation distribution was studied to understand the contribution of precipitation strengthening to the material's strength.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Deyong Zheng, Huihui Jin, Yucong Liao, Pengxia Ji
Summary: In this study, a highly stable and efficient catalyst, fluorine-doped Co3O4 (F-Co3O4), was developed for hydrogen production by water electrolysis. The F-Co3O4 catalyst exhibited a remarkable reduction in overpotential and demonstrated excellent stability for over 100 hours.
Article
Materials Science, Multidisciplinary
Ziwen Lv, Jintao Wang, Fengyi Wang, Jianqiang Wang, Fuquan Li, Hongtao Chen
Summary: Adding Cu6Sn5 nano particles can effectively inhibit the overgrowth of intermetallic compounds at the interfaces of solder joints in electronic devices, providing a solution to this issue. A new growth mechanism of intermetallic compounds at the interfaces was identified.
Article
Materials Science, Multidisciplinary
Jun Wang, Jiawei Chen, Wanru Liao, Fangyang Liu, Min Liu, Liangxing Jiang
Summary: A BiOI/AgI/Ag plasmonic heterostructure photocathode was successfully designed through electrodeposition, ion-exchange, and illumination methods. This photocathode exhibits superior performance in photoelectrochemical water splitting.
Article
Materials Science, Multidisciplinary
Xiaoxiao Liu, Xianxian Zhou, Xiaotao Ma, Qinbo Yuan, Shibin Liu
Summary: In this study, the authors propose a method to accelerate the reaction of polysulfides in lithium-sulfur batteries using a Ni@OC Mott-Schottky heterojunction as a catalyst. The experimental results demonstrate that the charge redistribution at the Ni@OC interface accelerates electron transfer and enhances catalytic activity, leading to improved reaction kinetics and battery performance.
Article
Materials Science, Multidisciplinary
Dayou Ma, Mohammad Rezasefat, Joziel Aparecido da Cruz, Sandro Campos Amico, Marco Giglio, Andrea Manes
Summary: The matrix has a significant effect on the impact resistance of composite materials. Replacing a brittle polymer with a more flexible one can improve impact resistance, but it poses challenges to standard testing methods. This study designs a new fixture for testing the low-velocity impact of soft composites and investigates the effect of the fixture on the mechanical performance.
Article
Materials Science, Multidisciplinary
Lingchang Wang, Qihang Yang, Huzhen Li, Ming Wei, Qian Wang, Zhenzhong Hu, Mengmeng Zhen
Summary: Bronze titanium dioxide (TiO2(B)) is a promising anode material for lithium-ion batteries due to its high specific capacity. However, its practical applications are hindered by poor conductivity and limited electrochemical kinetics. In this study, TiO2(B)-carbon nanosheets heterostructures are synthesized to enhance the cycling performance and rate capability of TiO2(B).
Article
Materials Science, Multidisciplinary
Atul Thakur, Ritesh Verma, Ankush Chauhan, Fayu Wan, Preeti Thakur
Summary: In this study, BaFe12O19 and BaFe12O19: Epoxy (50:50) nanocomposites were synthesized using the co-precipitation method. The structural information and material properties, such as crystallite size and electrical conductivity, were characterized by XRD, FESEM, EDX, and TEM techniques.
Article
Materials Science, Multidisciplinary
Jingyu Wu, Xinyan Ma, Yong Yang
Summary: A well-defined CoS2@NC(CS-500) hierarchical binder-free catalyst cathode is constructed through in-situ grown of ZIF-67 on carbon cloth and high-temperature carbonization. The cathode shows excellent reaction kinetics and electrochemical performance, providing inspiration for developing advanced Li-CO2 battery catalysts.
Article
Materials Science, Multidisciplinary
Svetlana M. Posokhova, Vladimir A. Morozov, Kirill N. Boldyrev, Dina Deyneko, Erzhena T. Pavlova, Bogdan I. Lazoryak
Summary: This study explores the impact of synthesis method and composition on the structure and luminescence properties of K5Eu1-xHox(MoO4)4 with the palmierite-type matrix. The co-doping of Eu3+ and Ho3+ ions plays a critical role in manipulating charge transfer and luminescence efficiency in the visible and infrared regions.
Article
Materials Science, Multidisciplinary
Jian Wang, Yeting Tao, Jingsheng Wang, Youtian Tao
Summary: A new electron-transport material iTPyBI-CN is developed through non-catalytic C-N coupling reaction. It exhibits better electroluminescence efficiency in organic light-emitting diodes compared to the commercial material TPBI, due to its twisted geometry and higher energy levels.
Article
Materials Science, Multidisciplinary
Tao Zhu, Feng Huang, Shuo Li, Yang Zhou
Summary: This article combines XRD analysis and microscopic structural observation to investigate the changes in limestone after high-temperature treatment. It finds that 500 degrees C is the critical temperature for crystalline and spatial arrangement changes in limestone, and the thermal conductivity, specific heat capacity, and heat storage coefficient gradually decrease after thermal treatment.
Article
Materials Science, Multidisciplinary
Muhammad Haekal Habibie, Fransiska Sri Herwahyu Krismastuti, Abdi Wira Septama, Faiza Maryani, Vivi Fauzia
Summary: This study focuses on the synthesis of zinc oxide nanostructure from zinc recovered from galvanization ash and highlights its potential as a sustainable source of zinc and as an antibacterial agent.
Article
Materials Science, Multidisciplinary
Jingyi Li, Yixin Xing, Wei Gu, Shousi Lu
Summary: In this study, PC@CaP microparticles were fabricated using biomimetic mineralization. The results showed that under environmental stress, PC@CaP exhibited improved stability and antioxidative activity, indicating its potential use in high-added value fields.
Article
Materials Science, Multidisciplinary
Yan Liu, Shunyou Chen
Summary: In this study, TNTs were used as a drug carrier and modified with ZIF-8 and silk fibroin to obtain a new drug loading platform. The results showed that this drug-loaded platform had a good drug release effect in vitro and could promote cell proliferation and osteogenic differentiation.
Article
Materials Science, Multidisciplinary
Chunhui Zhu, Wentao Wang, Qing Zhen, Xinning Huang, Shixin Li, Shaochang Wang, Xiaoping Ma, Xiaoxia Liu, Yalong Jiao, Kai Sun, Zhuangzhi Li, Huaixin Yang, Jianqi Li
Summary: A type of stacking fault is revealed in e-InSe crystal, which is associated with a small stacking-fault energy and shows exceptional plasticity.