Article
Chemistry, Physical
Hiroyuki Watanabe, Toru Murata, Shunsuke Nakamura, Naoko Ikeo, Toshiji Mukai, Koichi Tsuchiya
Summary: Cold-working was found to facilitate the formation of sigma phase in CrMnFeCoNi alloy under specific heat treatment conditions. The resulting sigma-body-centered cubic (BCC) aggregates consist of sigma phase spines and BCC particles, forming rapidly at the face-centered cubic/sigma interface.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
M. Klimova, D. Shaysultanov, A. Semenyuk, S. Zherebtsov, N. Stepanov
Summary: The study investigated the effect of carbon content on the phase composition, microstructure, and mechanical properties of thermomechanically processed CoCrFeMnNi high-entropy alloys. Results showed that increasing carbon content led to an increase in strength and a slight decrease in ductility. At low temperatures, the alloy with 2.0 at.% carbon demonstrated an attractive combination of mechanical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Mechanical
Yafei Li, Jiahe Zhou, Yifei Liu, Chuanyang Lu, Lei Shi, Wenjian Zheng, Weiya Jin, Zengliang Gao, Jianguo Yang, Yanming He
Summary: There is currently a strong interest in the AlCoCrFeNi2.1 eutectic high-entropy alloys (EHEAs) due to their ability to achieve a balance between strength and ductility. This study aimed to establish the relationship between the microstructure and mechanical properties of the alloy by examining its microstructural evolution during heat treatment at temperatures ranging from 500-1000 degrees C. The results showed that the microstructure of the alloy remained unchanged at temperatures below 700 degrees C, but B2(II) precipitates were observed in the L1(2) matrix at temperatures above 800 degrees C. Additionally, L1(2II) started to precipitate from the B2 matrix at 900 degrees C. Tensile tests conducted at temperatures between 20-1000 degrees C revealed that both the yield strength and ultimate tensile strength decreased with increasing temperature. However, the elongation increased significantly at temperatures above 800 degrees C, which was attributed to dynamic recrystallization. These findings provide a fundamental understanding of the high-temperature properties of duplex HEAs.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2023)
Article
Chemistry, Physical
Lei Shao, Zhiying Liu, Yu Zou
Summary: Doping with boron and carbon in NbMoTaW alloy can enhance its oxidation resistance, with different doping concentrations leading to different effects on the oxidation resistance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Yuefeng Hu, Kefu Gan, Yong Zhang, Dingshun Yan, Qiankun Yang, Shuya Zhu, Zhiming Li
Summary: In this study, dual-interstitial alloying of C and N was employed to enhance the strength-ductility synergy of the model FCC CoCrFeMnNi HEA. The addition of C and N resulted in the refinement of grains and the formation of nanoprecipitates. The dual-interstitial HEA exhibited high yield strength and large elongation, with the primary deformation mechanisms being dislocation slip and mechanical twinning.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Yao Chen, Xuefeng Gao, Gang Qin, Ruirun Chen, Jingjie Guo
Summary: Silicide phase was added to improve the mechanical properties of the Ti1.5NbZrV0.4Mo0.6 alloy. The microstructure, mechanical properties, and fracture mechanisms of Ti1.5NbZrV0.4Mo0.6Six (x = 0-0.9) high entropy alloys (HEAs) were studied. The addition of Si led to the growth of lamellar M5Si3 silicide phase in the alloy, resulting in improved yield strength and decreased density.
Article
Nanoscience & Nanotechnology
Hiroyuki Y. Yasuda, Yusuke Yamada, Ken Cho, Takeshi Nagase
Summary: The deformation behavior of equiatomic HfNbTaTiZr high entropy alloy was found to be influenced by 1/2<111> screw dislocations, similar to body centered cubic metals. An anomaly in yield stress was observed in the alloy solutionized at 1473 K, with the stress decreasing rapidly at lower temperatures and increasing at 873 K. The microstructure of the alloy strongly depended on annealing temperature, with phase separation and precipitation of different phases observed at different temperatures. Dynamic precipitation of the HCP phase was suggested to be responsible for the yield stress anomaly.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Physical
J. Coreno Alonso, O. Coreno Alonso
Summary: An equation has been derived to predict the unit cell volume of high entropy alloys using two different methods. The study found that both methods led to the same equation, and accurate lattice parameters were calculated for cubic HEA's.
Article
Nanoscience & Nanotechnology
Genfeng Shang, Weisen Zheng, Jingjing Wang, Xiao-Gang Lu
Summary: This study investigated the microstructural evolution and local mechanical properties of dendrites in Al0.6CoCrFeNi high entropy alloy at different annealing temperatures. Electron microscopy and nanoindentation tests were used, and it was found that L1(2) and B2 phases varied with annealing temperature in the dendritic core region, while the body-centered cubic phase transformed into the sigma phase in the inter-dendritic region. These phase transformations significantly affected the hardness of the material.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Ameey Anupam, Andrew S. M. Ang, K. Guruvidyathri, Musharaf Abbas, D. Sivaprahasam, Paul Munroe, C. C. Berndt, B. S. Murty, Ravi Sankar Kottada
Summary: The oxidation behavior of five high entropy alloys (HEAs) at 1100°C has been studied, with Al2CoCrFeNi and AlCoCr0.5Ni HEAs showing the lowest oxidation rates. The presence of Al-rich nanoscale precipitates aids in protective oxide growth, while the Al-lean phase fraction and its Al content have a significant impact on the alloy's oxidation behavior. A parameter "X" has been introduced to potentially shortlist HEAs for oxidation resistance applications, based on the ratio of these two factors and CALPHAD predictions.
Article
Nanoscience & Nanotechnology
Mathieu Traversier, Pierre Mestre-Rinn, Nathalie Peillon, Emmanuel Rigal, Xavier Boulnat, Franck Tancret, Jean Dhers, Anna Fraczkiewicz
Summary: This study investigates the impact of nitrogen on austenitic high-entropy alloy matrixes, showing that nitrogen addition significantly increases hardness and lattice parameter expansion, as well as affecting the mechanical properties due to nitrogen solid solution.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Xicong Ye, Haofeng Lei, Xinwang Liu, Guangwei Zhao, Jiaxing Feng, Junchao Chen, Bo Li, Dong Fang, Niu Gao
Summary: Multivariate synergistic alloying is an effective approach to enhance the overall mechanical properties of metallic materials. Eutectic high-entropy alloys with heterogeneous biphasic layered structures at the micro and nano scale exhibit excellent properties. However, most current studies on CoCrFeNi eutectic high-entropy alloys focus on unitary alloying. In this work, a design strategy based on infinite solid solution synergistic alloying is proposed for CoCrFeNi eutectic high-entropy alloys, leading to the successful design of eutectic high-entropy alloys with fine and regular micro-structures, some of which possess exceptional comprehensive mechanical properties.
Article
Chemistry, Physical
Fan Zhang, Bairu Lu, Xiongjun Liu, Hui Wang, Suihe Jiang, Muhammed Naeem, Xun-Li Wang, Yuan Wu, Zhaoping Lu
Summary: In this study, the effects of hydrogen on the mechanical properties and deformation behavior of Fe-Co-Ni-Cr precipitation-hardened HEAs were systematically investigated. It was found that hydrogen can enhance localized plastic deformation and cause stress concentration near the fracture, but the response of mechanical properties depends on the number of nanoprecipitates. In HEAs with a proper amount of nanoprecipitates, localized plastic deformation promoted the formation of deformation twinning and improved the strength and ductility. However, excessive nanoprecipitates accelerated the fracture process and led to hydrogen embrittlement with reduced ductility. These findings are important for understanding the hydrogen embrittlement mechanism in complex alloys and for the future design of high-performance HEAs with good hydrogen embrittlement resistance.
Article
Materials Science, Multidisciplinary
Fabio Da Costa Garcia Filho, Robert O. Ritchie, Marc Andre Meyers, Sergio Neves Monteiro
Summary: The concept of High-Entropy Alloys (HEAs) was proposed in 2004 and attracted attention due to their unexpected single-phase microstructure and excellent mechanical properties. The CrMnFeCoNi alloy stands out as the most successful HEA, while variants of the Cantor alloy, known as medium-entropy alloys (MEAs), are gaining interest for their industrial potential. The microstructure, phase stability, and mechanical properties of these alloys have been extensively studied.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Electrochemistry
Ana Maria Zemanate, Alberto Moreira Jorge Junior, Gisele Ferreira de Lima Andreani, Virginie Roche, Ratia Regina Cardoso
Summary: This study investigates the effects of different nickel concentrations on the microstructure, hardness, and corrosion properties of AlCrFeCoNix (x = 1.0, 1.5, 2.0) high entropy alloys. The alloys were obtained by arc melting and heat treated. The results show that the increase in nickel content and heat treatment lead to the formation of the FCC phase, reducing the hardness of the alloys. The alloys exhibit high resistance to localized corrosion and the formation of a protective film depends on the nickel content.
ELECTROCHIMICA ACTA
(2023)
Article
Materials Science, Multidisciplinary
Mostafa Hedayati Marzbali, Hamid Reza Jafarian, Sepideh Bokaei, Nokeun Park, Amir Momeni, Ali Reza Eivani
Summary: This study investigated the behavior of FeCoCrCuNi high entropy alloy under different temperatures and strain rates through hot compression experiments. The results showed that the flow stress varied with temperature and strain rate, and changes in dendritic structures and partial dynamic recrystallization were observed. A constitutive equation was developed to accurately predict high temperature behavior.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Saeed Asadi, Tohid Saeid, Farzad Habibi, Yejin Kim, Alireza Valanezhad, Nokeun Park
Summary: The defect-free joints of NiTi/austenitic stainless steel wires exhibit extraordinary properties, but encounter welding challenges leading to the formation of brittle intermetallic compounds. Identifying phases formed in the weld zone is crucial to improve mechanical properties and prevent the loss of shape memory and superelasticity. Suitable modification processes are required to avoid brittle phases and enhance the formation of more ductile phases in the weld zone.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Nanoscience & Nanotechnology
M. Sabzi, S. H. Mousavi Anijdan, A. R. Bali Chalandar, N. Park, H. R. Jafarian, A. R. Eivani
Summary: This investigation focuses on dissimilar welded joints of AISI 316L and AISI 310S stainless steels produced using different current modes in the gas tungsten arc welding process. Results show that the welding current affects the mechanical properties and fracture behavior of the joints. Microstructural observations reveal the structural changes in the weld metal due to the variation of welding current. Fractography analysis and XRD results provide further insights into the fracture mode and predominant phase in the welded joints.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Heedong Do, Saeed Asadi, Nokeun Park
Summary: The CoCrFeMnNi high entropy alloy was successfully joined to STS304 stainless steel using friction stir welding process. The joint exhibited superior cryogenic tensile properties compared with its properties at room temperature, thanks to significant martensitic transformation induced plasticity at LN2.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Hyung Jun Kim, Saeed Asadi, Farzad Habibi, Tohid Saeid, Alireza Valanezhad, Nokeun Park, Unhea Lee
Summary: In this research, the addition of nickel powder was used to improve the joining of NiTi alloys to stainless steel. Results showed that adding 50% nickel powder changed the chemical composition and improved the mechanical properties of the joints.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Review
Materials Science, Multidisciplinary
M. Sabzi, S. H. Mousavi Anijdan, M. Shamsodin, M. Farzam, A. Hojjati-Najafabadi, P. Feng, N. Park, U. Lee
Summary: Chemical Vapor Deposition (CVD) is a process where a solid is formed on a substrate through chemical reactions in the vapor phase. It allows for the coating of various materials, such as ceramic nanocomposites, dielectrics, and single crystalline silicon, onto different substrates. The design of a CVD system is influenced by factors like substrate dimensions, temperature, chemical composition, deposition process, chamber temperature, material purity, and production economics. Surface reaction kinetics, mass transfer reactions, and desorption reactions are involved in the CVD process. Thermodynamically, CVD requires high temperatures and low pressures. Kinetic control is used at low temperatures, while diffusion control is applied at high temperatures. Coatings in CVD are typically deposited at temperatures ranging from 900 to 1400 degrees Celsius. By controlling chamber temperature, precursor purity, and precursor flow rate, it is possible to partially control deposition rate and microstructure of ceramic coatings during the CVD process.
Article
Materials Science, Multidisciplinary
M. Taghian, M. Heydarian, S. Torkian, M. Parham Dabir, A. Bahrami, S. H. Mousavi Anijdan, N. Park
Summary: This study investigates the impact of HVOF coatings of Inconel, aluminum, and Colmonoy on the corrosion resistance of stainless steel substrates. Characterization of the coated samples was carried out using SEM, XRD, and EDS techniques. Impedance and Tafel tests were conducted to analyze the corrosion responses of the coatings at different temperatures. Inconel-coated specimens exhibited superior corrosion behavior due to the formation of Cr2O3 layers, which prevented chloride ions from diffusing across the coating. Although the Al-coated sample showed oxide layer formation according to the Nyquist curve, the Tafel test results indicated severe corrosion.
Article
Nanoscience & Nanotechnology
Guanghui Yang, Jiyeon Kang, Jin-Kyung Kim, Joo Hyun Park
Summary: This study investigated the effect of the co-precipitation of the B2 and & sigma; phases on the mechanical properties of the (CoCrFeNiMn) 95.2Al3.2Ti1.6 high entropy alloy subjected to two-step annealing. The co-precipitation of & sigma; and B2 particles led to the improvement of mechanical properties, including high strength and moderate ductility. The results suggest that the co-precipitation of & sigma; and B2 particles offers a novel microstructure design to optimize the strength-ductility balance of high-entropy alloys.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
S. Pourmohammadi, A. Mohammadnejad, A. Bahrami, S. H. Mousavi Anijdan, N. Park, M. Ghosh
Summary: This study investigates the microstructure and mechanical properties of mechanically alloyed and spark plasma sintered AlCoFeMnNi-xB (x = 0, 0.5, 1, and 5 at. %) high-entropy alloys (HEAs). Boron-doped HEAs were synthesized using mechanical alloying and consolidated using spark plasma sintering. The microstructural evolution and phase differentiation were analyzed using scanning electron microscopy, energy dispersive spectroscopy, and X-ray diffraction. The mechanical properties were evaluated using shear-punch test, and the fracture surface was studied using SEM. The correlation between microstructure and mechanical characteristics of the boron-containing high-entropy alloys is discussed.
Article
Materials Science, Multidisciplinary
Shengchao Duan, Taesung Kim, Jinhyung Cho, Joo Hyun Park
Summary: The effects of different fluxes on the reoxidation behavior of Si-killed 316L stainless steel were investigated. The total oxygen content in the liquid steel increased with RHA and RHA + A fluxes, but decreased with RHA + B flux. The number density of non-metallic inclusions increased with RHA and RHA + A fluxes, remained constant with RHA + B flux, and decreased with B flux due to its higher physicochemical factor.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Akbar Heidarzadeh, Rasoul Khajeh, Reza Jabraeili, Hamid Reza Jafarian, Mohamed Ahmed, Nokeun Park, Unhae Lee
Summary: The main problem in post-treatment of laser powder bed fusion (L-PBF) AlSi10Mg is the strength-ductility trade-off. Friction stir welding (FSW) was used to join AlSi10Mg plate produced by L-PBF and overcome this trade-off. FSW resulted in improved microstructure, texture, and mechanical properties. Tensile elongation was enhanced by 173% with a negligible decrease in strength (9%). The joint fractured from the stir zone during tensile loading, forming a bimodal dimple structure.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Jooho Park, Sun-Kuk Kwon, Jung-Eui Lee, Youngjo Kang, Joo Hyun Park
Summary: The effect of blown oxygen on the competitive removal of impurities from liquid copper was studied at a temperature of 1673 K. Oxygen blowing can effectively separate silicon and iron impurities, the dominant impurities in molten copper, into the slag. The interfacial area for oxidation of impurities was estimated by considering bubble and cavity formation for both top-blowing and bottom blowing methods. The kinetic model based on liquid phase mass transfer of impurities was verified to be valid for understanding the competitive removal of impurities from liquid copper through comparisons between experimental and theoretical results.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Mokali Veeresham, Reliance Jain, Unhae Lee, Nokeun Park
Summary: The yield strength property is important in the design of high entropy alloys (HEAs). However, experimental determination of the desired yield strength of HEAs is difficult, expensive, and time-consuming due to the vast composition space. This study utilized machine learning (ML) techniques to predict the room temperature yield strength of nitrogen-doped (CoCrFeMnNi)100-x-Nx HEAs under preferred thermomechanical conditions, achieving accurate predictions and demonstrating the potential of ML for designing HEAs with superior properties.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Yong Wang, Chengsong Liu, Hongwei Ni, Andrey Karasev, Wangzhong Mu, Par G. Jonsson, Joo Hyun Park
Summary: Lab-scale alloying experiments were conducted to evaluate the inclusion and precipitation characteristics in low-carbon ferrochrome (LCFeCr) and ferroniobium (FeNb) alloys added to 316-grade austenitic stainless steel. The results showed the presence of MnCr2O4 spinels and pure Al2O3 in LCFeCr alloys, while FeNb alloys contained pure TiOx, Al2O3 inclusions, and complex TiOx-Al2O3 aggregates. The addition of LCFeCr alloy decreased SiO2 content in liquid inclusions but increased the presence of higher MnO content inclusions. On the other hand, FeNb alloy addition led to the formation of high Nb-containing phases around inclusions and coarse Laves phases in the matrix. This study provides insights into the behavior of impurity particles during the alloying process for high-performance stainless steels.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Mostafa Hedayati-Marzbali, Hamid Reza Jafarian, Nokeun Park
Summary: This study investigates the hot deformation behavior and microstructural evolution of a novel medium entropy alloy. The findings shed light on dynamic recrystallization, deformation activation energy, and the unexpected shift to grain boundary sliding. These insights are valuable for advancing the knowledge of medium entropy alloys and their potential applications.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(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.
