Article
Chemistry, Physical
Xunan Duan, Shouren Wang, Gaoqi Wang, Shaoping Gao, Lihu Wang, Xuefeng Yang
Summary: The FeCrCoNiMo0.5Wx (x = 0,0.25,0.5,0.75,1.0) HEA coatings were prepared on Q235 surfaces by laser cladding technique. The addition of W promoted the formation of μ phase in the coating. The microstructure of the coating showed a typical dendrite region (DR)-inter-dendrite (ID) structure.
Article
Chemistry, Physical
S. S. Liu, M. Zhang, G. L. Zhao, X. H. Wang, J. F. Wang
Summary: The influence of titanium atomic ratio in high entropy alloys on coating performance was studied, revealing that the addition of titanium increased the amount of TiN particles in the coating, improving wear resistance but decreasing corrosion resistance and crack resistance beyond a certain threshold.
Article
Materials Science, Multidisciplinary
Yu Fu, Can Huang, Cuiwei Du, Jun Li, Chunduo Dai, Hong Luo, Zhiyong Liu, Xiaogang Li
Summary: The exploration of non-equimolar high-entropy alloy coating provides a broader space for the development of high-performance coatings. The addition of Mo significantly increased the hardness and wear resistance, with CoCr2FeNiMo0.3 coating showing excellent performance in acidic NaCl solution. The tribocorrosion mechanism of the Mo-containing coating involved a combination of abrasion, adhesion wear, and corrosion.
Article
Materials Science, Multidisciplinary
Ke Chen, Hongbo Pan, Mingyu Wu, Xianfa Wang, Dongyang Li
Summary: In this study, an Fe6AlCoCrNi medium-entropy (MEA) coating was successfully coated on a steel substrate by laser cladding. The coating exhibited excellent hardness and wear resistance, as well as good oxidation resistance at high temperatures.
Article
Chemistry, Physical
Tao Wu, Yunxiang Chen, Shuqin Shi, Mengting Wu, Wanyuan Gui, Yuanyuan Tan, Jiheng Li, Yuan Wu
Summary: Novel AlCoCrFeNiWx high-entropy alloy (HEA) coatings fabricated by laser cladding exhibit improved high temperature wear resistance and fluctuation in friction coefficient on hot working die steel. The presence of W-rich intermetallic compounds contributes to the enhancement of wear resistance, indicating potential for designing high temperature wear resistant coatings.
Article
Materials Science, Multidisciplinary
Tianhai Liao, Zonglun Wang, Xianghai Wu, Qibin Liu, Yaxiong Guo, Kailu Ding, Xiaojuan Shang
Summary: AlCoCrMoVx high entropy alloy coatings with different V contents were prepared on a 904L stainless steel substrate by laser cladding, and the effect of V content on the microstructure, wear resistance, and corrosion behavior of the coatings were investigated. As the V content increases, the s phase in the coatings gradually disappears, and the microhardness shows a decreasing-then-increasing trend. The coating with x=0.8 has the lowest specific wear rate. The addition of V improves the corrosion resistance of the coatings, and the AlCoCrMoV0.8 coating exhibits the lowest Icorr value and the largest impedance radius. In summary, the addition of V significantly improves the performance of AlCoCrMoVx high entropy alloy coatings.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Zhaolei Sun, Mingyuan Zhang, Gaoqi Wang, Xuefeng Yang, Shouren Wang
Summary: The addition of Al element in FeCoNiTiAlx high-entropy alloy coatings promotes the transformation from FCC phase to BCC phase, resulting in dendritic structure and increased hardness. However, it also increases the corrosion current density, while improving the wear resistance of the coating can be achieved by adding Al element.
Article
Materials Science, Coatings & Films
S. S. Liu, G. L. Zhao, X. H. Wang, C. J. Zhou
Summary: AlNbMoTaCu(x) high entropy alloy coatings were successfully synthesized on Ti6Al4V through laser cladding. The addition of copper effectively suppressed porosity and crack defects. The increase in copper content resulted in improved toughness and reduced micro-hardness of the coatings. The wear resistance of AlNbMoTaCu coatings was significantly enhanced, with the AlNbMoTaCu0.4 coatings exhibiting excellent wear resistance.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Materials Science, Coatings & Films
Yajie Guan, Xiufang Cui, Di Chen, Wennan Su, Yao Zhao, Jian Li, Xinyao Li, Litong Feng, Guo Jin
Summary: A new dual-phase high-entropy alloy coating has been successfully synthesized using laser cladding. The microstructures and high-temperature stabilities were investigated using various techniques. The coating exhibited good strength, toughness, and wear resistance, with a gradual transition from ductile to brittle fracture observed at higher compression speeds. Moreover, the coating showed excellent stability at a high temperature of 764.2 degrees C, and significant improvements in wear resistance and friction reduction were observed at 800 degrees C.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Optics
Hao Liu, Xiaojia Li, Jian Liu, Wenpeng Gao, Xiaotong Du, Jingbin Hao
Summary: The dual-layer CoCrFeMnTi0.2 HEA coating prepared by laser cladding on 15CrMn steel exhibits significantly higher hardness and superior wear resistance compared to CoCrFeMnNi HEA, mainly due to solid solution strengthening, precipitation strengthening, and martensitic transformation. However, the coating shows slightly inferior corrosion resistance because of the formation of corrosion microcells. Nonetheless, the coating possesses a wider passivation region due to refined grains and high content of passivation elements.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Materials Science, Coatings & Films
Hao Liu, Shifeng Sun, Tong Zhang, Guozhong Zhang, Haifeng Yang, Jingbin Hao
Summary: The addition of Si element refined the microstructure, increased the microhardness, and improved the wear behavior of the HEA coatings. The main wear mechanism evolved from adhesive wear, abrasive wear, and delamination wear to oxidation wear as the Si content increased.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Yang Liu, Zhixiang Xu, Gaojie Xu, Hongyong Chen
Summary: Laser cladding was used to fabricate FeCoCrNiAlx HEA coatings with different Al additions, which improved the wear properties of the alloy. The Al-modified coatings exhibited excellent metallurgical bonding interfaces with the substrates. With the increase of Al content, the hardness increased, while the CoF and wear rate decreased.
Article
Engineering, Mechanical
Xiaobin Liu, Jiazi Bi, Ziyang Meng, Ran Li, Yan Li, Tao Zhang
Summary: In this study, a Co-based amorphous powder with high glass-forming ability was prepared by gas-atomization and used to fabricate a large-area amorphous coating through laser cladding. The effect of different laser parameters on the glass formation of the coating was investigated, and the resulting coating exhibited extremely high microhardness and wear resistance. Clarification of the wear-failure mechanism of the Co-based coating was achieved through microstructural and element-distribution analysis of various worn surfaces.
TRIBOLOGY INTERNATIONAL
(2021)
Article
Materials Science, Coatings & Films
Hui Zhang, Gang Liu, Nannan Ren, Nuo Cheng, Zhengxue Dong, Qunshuang Ma
Summary: In this work, a novel strengthening strategy of NiCoFeCrSiMo high entropy alloy using high density in-situ synthesized carbides was reported. The microstructure of the composite coatings consisted of high-density carbides and a solid solution matrix. The composite coating exhibited significantly improved hardness and reduced friction coefficient.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Engineering, Mechanical
Chao-Min Yang, Xiu-Bo Liu, Yi-Fan Liu, Zheng-Xing Zhu, Yuan Meng, Hai-Bin Zhou, Shi-Hong Zhang
Summary: To prove the feasibility of using Cu to improve tribological properties, FeCoCrNiCux coatings were created on SUS304 using laser cladding. The effects of Cu on the microstructure were analyzed, and the tribological properties were systematically investigated. The results showed that the coatings consisted mainly of FCC solid solution, with Cu/Ni segregation appearing on grain boundaries and dendrites. The exceptional wear resistance of the FeCoCrNiCu coating can be attributed to its high work hardening capacity and ductility. At high temperatures, the friction coefficient gradually decreased with increasing Cu content, due to the mechanical combination of hard and ductile phases resulting in improved strength and wear resistance in the deformation layer.
TRIBOLOGY INTERNATIONAL
(2023)
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.