Article
Chemistry, Physical
Zhanji Geng, Mengling Zhang, Jianyong Zhu, Yingbo Peng, Wei Zhang, Feng Liu
Summary: Cr3C2-modified NiCr-TiC composite coatings with different Cr3C2 contents were prepared by plasma spraying technique. The microstructure of the coatings was characterized by scanning electron microscopy, and the friction and wear performance of the coatings were evaluated. The results showed that the modified coatings had dense and smooth surfaces, with uniformly distributed TiC throughout the coatings. The hardness of the coatings increased with increasing Cr3C2 content up to 850 HV3, but further increase resulted in cracks and defects, leading to a decline in wear resistance.
Article
Materials Science, Multidisciplinary
T. A. Krylova, Yu A. Chumakov, M. P. Vasilyeva
Summary: The study successfully fabricated composite coatings with WC on the surface of Ni3Al intermetallic using non-vacuum electron beam cladding technique, showing a good metallurgical bond. Addition of CaF + LiF flux mixtures in the initial cladding powder was found to reduce the loss of tungsten carbide powder. The microhardness of the produced composite coatings was 1.3-1.5 times higher than the substrate material, with a wear resistance 2.2 times higher than Ni3Al.
Article
Optics
Dariusz Bartkowski, Aneta Bartkowska, Peter Jurci
Summary: The study investigated the effect of different laser beam power values and powder feeding rates on properties of Fe/WC metal matrix composite coatings produced by laser cladding. Coatings produced at a powder feeding rate of 12.50 g/min showed the highest microhardness and corrosion resistance.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Metallurgy & Metallurgical Engineering
Zhanyong Zhao, Lizheng Zhang, Peikang Bai, Wenbo Du, Shaowei Wang, Xiangyan Xu, Qingnan Dong, Yuxin Li, Bing Han
Summary: The TiC/graphene/graphite/Ti6Al4V composite coating was prepared using laser cladding, showing improved wear resistance and changing wear mechanisms under different loads, transitioning from abrasive and oxidation wear to delamination, fatigue, and oxidation wear. The in-situ reaction between graphene and titanium formed feathery TiC, enhancing the coating's tribological behavior.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2021)
Article
Materials Science, Coatings & Films
Monty Kumar, Shakti Kumar, Kailash Jha, Amitava Mandal
Summary: Composite coating with different rare earth oxides using the TIG cladding process was found to enhance the mechanical and tribological properties of titanium alloy. The combination of CeO2 and La2O3 showed the highest microhardness and wear resistance, indicating its suitability for surface modification.
SURFACE ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
T. A. Krylova, Yu. A. Chumakov
Summary: A composite coating with a thickness of 5.2 ± 0.3 mm was obtained through non-vacuum electron-beam cladding of WC powder on an Al-6% Mg alloy. The exposure of a highly concentrated relativistic electron beam to the alloying system resulted in partial dissolution of tungsten carbide and the formation of new phases. The microstructure and phase composition of the composite coating were analyzed using scanning electron microscopy, energy dispersive X-ray analysis, and X-ray diffraction analysis. The microhardness of the coating was 1.3 times higher than the substrate material, and the wear resistance was 1.13 times higher than the Al-6% Mg alloy.
Article
Materials Science, Multidisciplinary
Xiaojin Miao, Meiping Wu, Chen Cui, Dadong Jie, Rui He, Hang Wang, Chenglong Ma, Quanlong Wang
Summary: (TiC + TiBx)/Ti composite coatings were prepared by laser cladding on a Ti6Al4V substrate to enhance its microhardness and water erosion resistance. The effects of laser energy density and powder deposition density on the coating's morphology, phase composition, microstructure, microhardness, and water erosion resistance were comprehensively investigated. The results showed that the coating's morphology was influenced by laser energy density and powder deposition density, while the microstructure was not fully understood. Higher scanning speeds were beneficial for grain refinement. The microhardness and water erosion resistance of the coatings significantly improved due to the dispersion strengthening and grain refinement effects of the in situ synthesized hard phases.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
Tao Yu, Houqin Wang, Ke Han, Yifan Wang, Yu Qiu, Binggang Zhang
Summary: The study found that with the increase of cladding current, the Ti content in the coatings rises, leading to larger sizes of BCC1, IMC1, and IMC2, while the microhardness, nanoindentation hardness, elastic modulus, and room-temperature creep resistance decrease. The improvement of coating properties is mainly attributed to solid solution, second phase, and precipitation strengthening.
Article
Chemistry, Physical
H. C. Li, D. G. Wang, C. Hu, J. H. Dou, H. J. Yu, C. Z. Chen, G. C. Gu
Summary: The study focused on the bioactivity improvement of titanium alloy through laser cladding derived ceramic coatings. The presence of MgO in the coatings affected their microstructure, mechanical properties, and biological performance. The formation of apatite in simulated body fluid (SBF) was analyzed, showing promising results for the biocompatibility of the cladding coatings.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Zhao Shengbin, Jia Chenpeng, Yuan Yuxue, Wang Lixin, Huang Yiming, Yang Lijun
Summary: The study focuses on the effects of laser hot wire cladding and laser remelting on the microstructural characteristics and performance of nickel-based composite tracks. The results show that the distribution of particles and phase transformation in the tracks varies with different laser energy densities, and the wear resistance of the coatings is influenced by the energy density.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Yanan Liu, Quan Wang, Jichang Xie, Xuejiao Yang, Peng Peng, Yue Wang, Mengrong Li, Chul Hee Ryu, Yun Hwan Joo, In Wha Jeong, Tae Hyun Sung, Liangliang Xu
Summary: An enhanced surface composite coating with improved nano-hardness was successfully prepared on Ti811 alloy using laser cladding processing. The investigations showed that the coating had multiple phases and the effective combination between interfaces ensured the improved nano-hardness of the coating.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Coatings & Films
Xiaotong Pang, Chengwu Yao, Zhihui Xiong, Qunfu Gong, Junhao Sun, R. D. K. Misra, Zhuguo Li
Summary: This study investigates the microstructure and mechanical properties of laser-clad titanium alloy samples on forged plates. It is found that the choice of alloy powders significantly impacts both the strength and elongation properties of the laser-clad samples.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Materials Science, Coatings & Films
Wei Chang, Guangchun Xiao, Hui Zhang, Hui Chen, Mingdong Yi, Jingjie Zhang, Zhaoqiang Chen, Chonghai Xu
Summary: Graphene (Gr)-reinforced Co-based (Co50) composite coatings were prepared on 40Cr steel substrates using laser cladding technology. The effects of different amounts of Gr addition on the microstructure and mechanical properties of the coating were investigated. The addition of an appropriate amount of Gr improved the overall properties of the coating, with most of the Gr forming carbides under laser irradiation. The addition of Gr significantly refined and distributed the grains, resulting in enhanced microhardness and reduced friction.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Stefan Valkov, Daniela Nedeva, Vladimir Dunchev, Fatme Padikova, Maria Ormanova, Borislav Stoyanov, Nikolay Nedyalkov
Summary: This study introduces the possibilities of modifying and improving the surface structure and properties of titanium substrates by creating composite Ti / TiC layers. These layers were fabricated using a two-step electron-beam surface modification technique. The first step involved injecting C powder into pure Ti substrates through electron-beam alloying technology. The second step involved refining and homogenizing the microstructure through electron-beam remelting. Different remelting speeds led to the formation of composite layers with varying distribution of TiC particles in the titanium matrix, resulting in increased microhardness compared to the base Ti substrate.
Article
Engineering, Mechanical
Z. Y. Ren, Y. L. Hu, Yonggang Tong, Z. H. Cai, Jian Liu, H. D. Wang, J. Z. Liao, S. Xu, L. K. Li
Summary: In order to enhance the microhardness and wear resistance of TC4 alloy, a NbMoTaWTi high-entropy alloy coating was produced on the surface of TC4 alloy through laser cladding. The coating exhibited a single BCC phase with fine dendrites dominating the top microstructure and petal-like coarse dendrites in the bottom near the interface. The microhardness of the coating reached 600 HV, 72% higher than that of the substrate. The coating's wear surface was smooth and adhered to abrasive material. The specific wear rate of the coating decreased by 121.9% compared to the substrate, with oxidative wear and adhesive wear being the primary wear mechanisms.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
T. A. Krylova, Yu. A. Chumakov
Summary: Chromium carbide-based coatings were fabricated with and without TiC and TiB2 modifiers using non vacuum electron-beam cladding. The addition of modifiers altered the phase composition, microstructure, and properties of the composite coatings, enhancing their performance.
Article
Materials Science, Multidisciplinary
T. A. Krylova, Yu. A. Chumakov
Summary: A composite coating with a thickness of 5.2 ± 0.3 mm was obtained through non-vacuum electron-beam cladding of WC powder on an Al-6% Mg alloy. The exposure of a highly concentrated relativistic electron beam to the alloying system resulted in partial dissolution of tungsten carbide and the formation of new phases. The microstructure and phase composition of the composite coating were analyzed using scanning electron microscopy, energy dispersive X-ray analysis, and X-ray diffraction analysis. The microhardness of the coating was 1.3 times higher than the substrate material, and the wear resistance was 1.13 times higher than the Al-6% Mg alloy.
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.