Article
Materials Science, Multidisciplinary
Chao Lu, Yue Wang, Meng Yang, Yan Han, Jian Yang, Jihua Huang, Shuhai Chen, Zheng Ye, Yue Zhao
Summary: By using a porous NiFeWss interlayer prepared on the surface of a W substrate using electrolytic corrosion technology, diffusion bonding between 90WNiFe alloy and 30CrMnSiA steel was achieved, resulting in a joint with high tensile strength and elongation.
Article
Chemistry, Physical
Peng Li, Chao Li, Honggang Dong, Baosheng Wu, Yueting Ma, Cunzhu Zou, Yuesen Yang
Summary: The study investigated the vacuum diffusion bonding of TC4 titanium alloy to 316L stainless steel using a newly designed high-entropy alloy interlayer. It was found that increasing the bonding temperature enhanced the mechanical properties of the joint significantly.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Y. D. Liu, W. S. Gu, Z. L. Pei, J. Gong, C. Sun
Summary: The combustion behavior and mechanism of TC25 alloy were studied using titanium fire melt liquid droplet tests, and the microstructure and element distribution after combustion were analyzed. The combustion reaction zone consisted of the oxide zone, melting zone, and heat affected zone. The enrichment of alloying elements at the melting zone/heat affected zone interface played a crucial role in regulating the interface propagation rate. The diffusion of Al element was the rate-determining step in the initial stable combustion stage, while the diffusion of O element became the rate-determining step in the subsequent combustion stage.
Article
Nanoscience & Nanotechnology
Yanfei Yin, Wenjuan Kou, Yongqing Zhao, Haiying Yang, Weidong Zeng
Summary: In this study, a hierarchical transition structure with multiphase architectures, caused by elemental gradients, is obtained in the investigated layered Ti-TiNb alloy. The component types of the alloy are enriched from 2 types to 7 types. Special attention is given to the architectures consisting of alpha-phase in two shapes and nano-sized omega-phase, introduced by heterogeneously precipitating behavior. This study can serve as a template for designing and developing a new class of layered metal materials with multi-component features.
SCRIPTA MATERIALIA
(2022)
Article
Materials Science, Multidisciplinary
Qi Gao, Xiaosong Jiang, Hongliang Sun, Defeng Mo, Xue Li, Zixuan Wu, Liu Yang
Summary: Electron beam welding of 4J36 invar alloy and TC4 titanium alloy was conducted using Cu-Nb composite diffused metal interlayer. The depth to width ratio and the tensile strength of the welded joints increased with the increase of electron beam current. Under the designed process parameters, two melting zones formed solid solutions in the welded joints, achieving a maximum tensile strength of 244.1 MPa, with the fracture location mainly located at the 4J36/Cu interface.
Article
Chemistry, Physical
Guangxu Zhao, Jing Zhang, Shuzhi Zhang, Gang Wang, Jianchao Han, Changjiang Zhang
Summary: In this study, a novel CoCuFeNiTiV0.6 high entropy alloy interlayer was used for vacuum diffusion bonding of TiAl alloy and TC4 titanium alloy. The effects of bonding temperature and pressure on the microstructure, element diffusion behavior, and mechanical properties of the joint were investigated. Different diffusion layers were formed at the interface, and their thickness increased with the increase of bonding temperature and pressure. The mechanical properties of the joints were improved compared to traditional bonding methods.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Ceramics
S. W. Li, J. M. Shi, J. T. Xiong, Y. Peng, J. Ren, F. S. Zhang, Jinglong Li
Summary: In this study, diffusion bonding of WC-Co cemented carbides to a tool steel was achieved using Ni foils as the interlayer in a vacuum environment. The presence of Ni interlayer suppressed brittle phases and cracks, leading to improved bonding strength. Additionally, a coherent relationship between WC grains and Ni interlayer was observed at the interface, contributing significantly to the joint's shear strength.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Yuxin Xu, Xiaoming Qiu, Suyu Wang, Jinlong Su, Fei Xing
Summary: Vacuum brazing of tungsten based alloy and superalloy GH907 using lean Cu-Ag based fillers at 1050 degrees C for 20 min showed improved wettability and brazeability. The formation of (Fe, Ni) diffusion layer and Cu-rich infiltration zone contributed to the high performance of joints.
Article
Materials Science, Multidisciplinary
Mengxiang Zhang, Wentan Zhu, Shangru Meng, Wensheng Liu, Yunzhu Ma, Jianning Wang, Huanteng Sun, Qingshan Cai
Summary: In this study, a novel CrFeCoNiCu high entropy alloy (HEA) interlayer was used to produce high-strength diffusion bonding joints of 93W-4.9Ni-2.1Fe tungsten alloy and 30CrMnSiNi2A steel. The microstructure evolution and mechanical properties of the bonded joints at different temperatures were investigated. The results showed the formation of μ-Fe7W6 phase at the 93W/HEA interface and the presence of solid solution between the γ-(Ni, Fe) phase and HEA. Cr7C3 and Cr23C6 phases were also found near the HEA/steel interface. The strength of the bonded specimens reached 592 MPa at a bonding temperature of 950 degrees C. This research provides a new design strategy for producing high-performance tungsten alloy/steel composites.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Svitlana Maksymova, Petro Kovalchuk, Vitalii Voronov
Summary: In brazing dissimilar materials, such as Kovar and titanium (molybdenum), issues arise due to the different properties and chemical composition of the materials, affecting the wetting and joint structure. Investigations were conducted on the spreading of silver-based brazing filler metals (Ag-Cu, Ag-Cu-Sn) over Kovar and titanium, as well as the influence of barrier nickel coating on Kovar-titanium brazed joints. X-ray microanalysis revealed the formation of eutectic structure in brazed seams with Ag-Cu system, and the appearance of a copper-based phase enriched in tin in seams with Ag-Cu-Sn system. Morphological features were studied in Kovar-molybdenum brazed joints produced by vacuum brazing with a Cu-Mn-Co filler metal, revealing the presence of a copper-based solid solution, iron-based grains, and a molybdenum-based reaction layer.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Nanoscience & Nanotechnology
Yajie Du, Jiangtao Xiong, Guodong Wen, Jinglong Li, Feng Jin, Hao Zhang, Guilong Wang
Summary: This study successfully conducted diffusion bonding of Ti2AlNb based alloy using a novel refractory high-entropy alloy as the interlayer. The microstructure and mechanical properties of the joints were thoroughly investigated and analyzed, confirming the suitable property matching between the high-entropy interlayer and the base metals.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Y. J. Du, J. T. Xiong, F. Jin, S. W. Li, L. Yuan, D. Feng, J. M. Shi, J. L. Li
Summary: In this study, diffusion bonding of refractory high entropy alloy Al-5(TiZrHfNb)(95) with intermetallic compound Ti2AlNb was conducted under different temperatures, revealing the microstructure evolution and mechanical properties. The presence of Al3Zr5 phase in the joint interface was found to impact the shear strength, with higher bonding temperatures resulting in higher strength but lower Al3Zr5 content. Increasing bonding temperature led to a transition from intergranular brittle to ductile fracture in the joints.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Huai Sun, Yong Han, Yuan Li
Summary: A reliable solid diffusion bonding between 90 W-7Ni-3Cu tungsten alloy and 304 stainless steel was achieved by using a pure Cu interlayer. The interfaces bonded excellently through mutual diffusion of atoms, without formation of intermetallic compounds or brittle phases. The joint with a Cu interlayer exhibited enhanced tensile strength of 265 MPa, about 58% higher than the joint without a Cu interlayer. Fracture analysis revealed a mixed fracture mode of plastic fracture and intergranular fracture in the Cu interlayer and at the Cu/304SS interface.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Tingyi Lin, Lei Zhou, Pingwei Xu, Yingfei Guo, Hang Luo, Zhihai Cai, Haidou Wang, Jing Li, Yilong Liang, Yu Liang
Summary: Increasing the amount of a/13 phase boundaries through conventional heat treatment in titanium alloys improves strength but reduces ductility. However, a unique semi-equiaxed structure is formed in the Ti6242 alloy through rapid heat treatment, resulting in two types of microstructures with heterogeneous 13 transformation. These microstructures exhibit enhanced strength and good ductility due to the increased fraction of phase boundaries and precipitated nanoparticles, as well as the presence of soft ap, coherent nanoparticles, and deformable lamellae in the heterogeneous 13 transformation. Excessive Type II microstructure can deteriorate ductility to some extent. This work provides a novel approach for high-performance dual-phase titanium alloys.
MATERIALS & DESIGN
(2023)
Article
Nanoscience & Nanotechnology
Fuqiang Tian, Junmiao Shi, Feng Jin, Xianjun Sun, Jinglong Li, Xiancheng Zhang
Summary: In this study, the diffusion bonding of DD5 single crystal and FGH98 superalloy using an Al0.3FeCoNiCr high entropy alloy interlayer (HEA interlayer) was investigated. The microstructure evolution and mechanical properties of the joint were analyzed, revealing the effects of diffusion bonding temperature on element diffusion and interface structure.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Chemistry, Physical
Gibin George, Jacob Hayes, Candyce N. Collins, Jason E. Davis, Lei Yu, Yulin Lin, Jianguo Wen, Daryush Ila, Zhiping Luo
Summary: This study investigates the photoluminescence and cathodoluminescence characteristics of rare-earth-doped CaF2 nanoparticles and their composite monoliths with epoxy. The results show that the luminescence intensity increases as the particle size decreases for single-doped particles, but decreases for codoped particles. Additionally, Eu2+- and Tb3+-codoped CaF2 nanoparticles exhibit red emission.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Chemical
Wenyue Tan, Xiaosong Jiang, Zhenyi Shao, Hongliang Sun, Tingfeng Song, Zhiping Luo
Article
Polymer Science
Washat Ware, Tia Wright, Yimin Mao, Shubo Han, Jessa Guffie, Evgeny O. Danilov, Jeromy Rech, Wei You, Zhiping Luo, Bhoj Gautam
Summary: Research shows that tuning aggregation in polymer blends can optimize charge generation, which is beneficial for the design of highly efficient organic photovoltaic devices.
Review
Optics
Vineet Kumar, Zhiping Luo
Summary: This review article presents the recent advances in X-ray emission dynamics of inorganic scintillator materials, discussing the origin of scintillation and the factors influencing the decay process of different luminescence centers, focusing on the short-lived decay component. The study highlights three decay mechanisms in cross luminescence emission, exitonic emission, and dopant-activated emission.
Article
Chemistry, Physical
Sivasankara Rao Ede, Candyce N. Collins, Carlos D. Posada, Gibin George, Hui Wu, William D. Ratcliff, Yulin Lin, Jianguo Wen, Shubo Han, Zhiping Luo
Summary: The synthesis of SrCo-Fe-O oxides to enhance OER activity resulted in the discovery of Sr2Co1.5Fe0.5O6-delta as the best catalyst, demonstrating superior performance in water oxidation due to its unique intermediate structure and increased covalency of Co 3d and O 2p. This study highlights the importance of developing catalysts with specific structural features and chemical properties for improved hydrogen generation efficiency.
Article
Chemistry, Physical
Rui Shu, Xiaosong Jiang, Y. X. Zhang, Richard Wuhrer, Bing Liu, Hongliang Sun, Zhenyi Shao, Zhiping Luo
Summary: In this study, Mo-Cu-Zr ternary composites were reinforced with various types and contents of nano-carbon to find the optimal composition. The 0.8C + 0.2G-MCZ3 composite showed the best comprehensive properties, with a relative density, hardness and compressive strength of 99.7%, 343.6 HV and 953.5 MPa respectively. The synergetic effects and multiple strengthening mechanisms resulted in the improvement of the microstructure and properties of the composites.
Article
Nanoscience & Nanotechnology
Yuxiang Liu, Mingxiang Liu, Jianlei Zhang, Wei He, Zhiping Luo, Changjiang Song, Qijie Zhai
Summary: In this study, it was found that the addition of chromium had significant effects on the microstructure and mechanical properties of Fe-28Mn-9Al-1.2C alloy, with different chromium addition levels showing nonlinear impacts on yield strength and total elongation of the strips. Annealing treatment improved the yield strength of all strips, and the formation of Cr23C6 carbides at austenite grain boundaries could lower the ductility of the strips containing 9% chromium.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Multidisciplinary
Zhiping Luo
Summary: This study used quantitative electron microscopy to investigate the crystalline structure of gamma-alumina and its transformation mechanism from boehmite, proposing a new tetragonal structure model and elucidating two transformation mechanisms. The experimental observations supported the reaction mechanism, which occurred through partial occupation of the dehydrated space by diffusion in the initial stage of the transformation.
ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS
(2021)
Article
Chemistry, Physical
Mingxiang Liu, Zhiming Li, Zhiping Luo, Changjiang Song, Qijie Zhai
Summary: In an Fe-10Cr alloy, the critical cooling rate of martensitic transformation decreases by one order of magnitude when cooling from 1300 degrees C compared to cooling from 1000 degrees C. This decrease is attributed to the precursor delta ->gamma phase transition during cooling from 1300 degrees C significantly reducing the non-chemical driving force of martensitic transformation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Gibin George, Navadeep Shrivastava, Tamela L. Moore, Caressia S. Edwards, Yulin Lin, Jianguo Wen, Zhiping Luo
Summary: In this study, high-aspect-ratio AWO(4) (A = Ba, Ca, Pb and Sr) nanofibers doped with Tb and Eu ions were synthesized and their performance in UV light detection was compared. The CaWO4:5Tb-5Eu nanofibers exhibited strong photoluminescence and cathodoluminescence emissions, making them a potential fluorescent probe for UV wavelength detection. However, similar results were not observed in nanofibers of other AWO(4) compounds. Additionally, the CL intensities from CaWO4:5Tb-5Eu nanofibers showed highly linear dependences on applied voltage and current, suggesting their potential use in radiation detection.
Article
Materials Science, Multidisciplinary
Menuka Adhikari, Navadeep Shrivastava, Starfari T. McClain, Chandra M. Adhikari, Burak Guzelturk, Rabi Khanal, Bhoj Gautam, Zhiping Luo
Summary: The halide Cs2HfF6 (CHF) possesses higher mass density and chemical stability for radiation detection compared to halides Cs2HfX6. Luminescence properties and energy transfer mechanisms of rare-earth-doped CHF materials are studied. Codoped CHF material shows stable emission and higher sensitivity to radiation energy.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Girja Mani Aryal, Krishna Prasad Kandel, Ram Kumar Bhattarai, Basant Giri, Menuka Adhikari, Alisha Ware, Shubo Han, Gibin George, Zhiping Luo, Bhoj Raj Gautam, Bhanu Bhakta Neupane
Summary: In this study, multiple material properties of handmade Lokta paper from Nepal were measured and analyzed. The findings revealed that the papers are lightweight with intermediate to high strength, and the tensile strength is significantly higher along the length direction. Features of cellulose, hemicellulose, and lignin were observed in FTIR spectra, and crystalline and amorphous phases were identified in XRD data. Electron microscopy images showed a cross-linked network of fibers contributing to strength and durability.
Article
Materials Science, Multidisciplinary
Kasci D. Pelucarte, Tashi A. Hatchell, Gibin George, Sivasankara Rao Ede, Menuka Adhikari, Yulin Lin, Jianguo Wen, Zhiping Luo, Shubo Han
Summary: In this study, porous La-Sr-Co-Ni-O nanofibers with a perovskite structure were successfully prepared and utilized to develop a nonenzymatic electrochemical glucose biosensor. The biosensor exhibited high sensitivity and excellent stability towards glucose, while showing low interference response to other biomolecules. This research has great potential for practical applications in clinical testing.
MATERIALS ADVANCES
(2022)
Review
Chemistry, Physical
Sivasankara Rao Ede, Zhiping Luo
Summary: This review focuses on different doping strategies and associated OER mechanisms of state-of-the-art catalysts for improving the kinetics of the oxygen evolution reaction in electrochemical water splitting. Various doping methods have been proposed to enhance the efficiency of OER catalysts, with different materials types (oxides, non-oxides, and carbon-based catalysts) showing unique effects on the OER mechanism. Combined experimental and theoretical research provides guidelines for designing efficient catalysts.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Materials Science, Multidisciplinary
Vineet Kumar, Gibin George, Jacob Hayes, Yulin Lin, Burak Guzelturk, Jianguo Wen, Zhiping Luo
Summary: The study successfully synthesized cube-shaped nanocrystals doped with rare-earth ions via a hydrothermal method. The dopants on two different Ba2+ sites in the host lattice exhibited site-dependent luminescence characteristics. In the codoped sample, Eu3+ and Tb3+ were observed to preferably occupy two different sites in the host lattice.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
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.