Article
Chemistry, Physical
R. Souissi, N. Bouguila, M. Bendahan, K. Aguir, T. Fiorido, M. Abderrabba, I Halidou, A. Labidi
Summary: The importance of detecting ozone and its impact on human health; Gas sensors based on In2S3 films prepared have high sensitivity and low detection limits; The gas sensor at a working temperature of 160 degrees Celsius exhibits good rapidity and selectivity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Nantikan Tammanoon, Anurat Wisitsoraat, Adisorn Tuantranont, Chaikarn Liewhiran
Summary: This study investigates the sensitivity and selectivity of Zn-substituted SnO2 nanoparticles towards formic acid, demonstrating their potential for ultrasensitive and selective detections of HCOOH in practical applications. The results show that a sensing layer with the optimum Zn content of 0.2 wt% provided a remarkably high response towards 1000 ppm HCOOH, indicating a significant improvement in performance compared to undoped samples. Additionally, good selectivity against various volatile organic compounds was achieved, highlighting the promising applications of the flame-made Zn-substituted SnO2 sensors.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Review
Chemistry, Analytical
Andualem Belachew Workie, Henni Setia Ningsih, Shao-Ju Shih
Summary: Nanotechnology involves the study and application of materials, structures, devices, and systems at the nanoscale, which is about one hundred nanometers or smaller. Spray pyrolysis (SP) is a cost-effective method for synthesizing a wide range of nanomaterials, including metals, semiconductors, and ceramics, by decomposing a precursor solution or suspension in a high-temperature environment. There are different types of SP processes, such as tubular reactors and electrostatic spray deposition (ESD), each with unique parameters and requirements. SP has potential applications in fields like nanomedicine, sensing, electrochemical devices, catalysis, and energy conversion and storage, but more research is needed to explore its full potential and develop new applications.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Acoustics
Jerry W. Rouse, Daniel Bowman, Timothy F. Walsh
Summary: This study introduces a compact infrasound direction of arrival sensor based on acoustic metamaterials, which can determine the direction of arrival in a small footprint. The sensor design greatly expands the locations where it can be deployed, providing further avenues for research.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2021)
Article
Engineering, Environmental
Jing He, Hong Zhang, Yingxue Ma, Yuwei He, Zhuo Liu, Junyu Liu, Sheng Wang, Yaqi Liu, Kai Yu, Jie Jiang
Summary: This paper investigates the impact of salt cations in sea spray aerosols (SSAs) on the ozonolysis of model lung phospholipids at the air-water interface. The results show that salt cations facilitate the interfacial ozonolysis of phospholipids, and this facilitation is dependent on the concentration, charge number, and ion radius of the salt cations. The mechanism study reveals that the electrostatic interaction between the phospholipids and the salt cations disrupts the packing of the phospholipids, making the oleyl chains more susceptible to ozone. The aerosolization of salt-dominated artificial seawater and real seawater also demonstrates a significant increase in the ozonolysis of phospholipids intervened by salt cations.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Geosciences, Multidisciplinary
Han Xiao, Toshiro Tanimoto, Zack J. Spica, Beatriz Gaite, Sandra Ruiz-Barajas, Mohan Pan, Loic Viens
Summary: This study used DAS data to analyze the sources of high-frequency microseisms, finding that they are located within 7 to 27 km from the shore and move quickly along narrow areas. This new method provides a new approach for understanding the complex seismic phenomena happening in the oceans.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Review
Energy & Fuels
Jianping Chen, Zan Zhu, Wei-Ning Wang
Summary: This article reviews a rapid microdroplet-based nanomanufacturing process to fabricate MOFs-based functional materials with controlled hierarchical nanostructures. Strategies to integrate MOFs with semiconductors to form hybrid photocatalysts for addressing environmental challenges, particularly CO2 photoreduction, are summarized. In-situ techniques were used to explore the quantitative mechanisms of CO2 adsorption, activation, and charge transfer within the hybrid nanostructures.
JOURNAL OF PHYSICS-ENERGY
(2021)
Article
Chemistry, Analytical
K. Inyawilert, A. Sukee, M. Siriwalai, A. Wisitsoraat, J. Sukunta, A. Tuantranont, S. Phanichphant, C. Liewhiran
Summary: Erbium-doped SnO2 nanoparticles with different Er concentrations were synthesized and their gas-sensing properties were investigated. The sample with 0.1 wt% Er exhibited the best response to C2H4O, showing significantly improved performance compared to the undoped sample.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Engineering, Environmental
Shuo Liu, Mohammad Moein Mohammadi, Mark T. Swihart
Summary: This review provides an overview of flame aerosol synthesis of catalysts, including the mechanisms, applications, and recent progress. By controlling process parameters and reactor configuration, catalyst structures can be tailored. The advantages, limitations, and future research directions of flame-made catalysts are also discussed in the review.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Mechanical
Hua-Yang Chen, Zhen-Hui Qin, Sheng-Nan Liang, Xin Li, Si-Yuan Yu, Yan-Feng Chen
Summary: A gradient-index seismic metamaterial based on a surface acoustic PnC is proposed to provide omnidirectional protection against ultra-broadband seismic Rayleigh waves.
EXTREME MECHANICS LETTERS
(2023)
Article
Environmental Sciences
Muhammad Khan, Salman Tariq, Zia Ul Haq
Summary: Particulate pollution is a significant problem in developing countries like Pakistan, with aerosols having severe impacts on climate and human health. This study analyzed the optical and physical properties of aerosols using the ozone monitoring instrument (OMI) retrieved ultraviolet aerosol index (UVAI) over Pakistan from October 2004 to December 2021. The results showed spatial and temporal distribution, annual and seasonal trends of absorbing aerosols, as well as their relationship with meteorological parameters. The study also identified potential sources of aerosols in major cities and discussed natural and anthropogenic factors influencing absorbing aerosols. Various methods, such as afforestation and promotion of public transport networks, are suggested to reduce particulate pollution.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Nabeel M. S. Kaawash, Devidas I. Halge, Vijaykiran N. Narwade, Prashant S. Alegaonkar, Kashinath A. Bogle
Summary: Surface passivated α-Fe2O3 thin film-based photodetector shows enhanced photo-responsivity, photo-sensitivity, high speed, and ultraviolet photoresponse due to the suppression of surface defects.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Engineering, Chemical
Georgia Kastrinaki, Margaritis Kostoglou, Athanasios G. Konstandopoulos
Summary: Stringent regulation is put in place to restrict global vehicle emissions, with advanced catalytic systems incorporating expensive platinum group metals for oxidation catalysis. In this study, porous silica and alumina particles doped with Pt, Ce, and Na were synthesized and evaluated for their pore size distribution. The evaluation showed that samples with higher surface areas exhibited higher conversion curves for NO oxidation, indicating the importance of surface area in the oxidation kinetics. Additionally, the study also explored the correlation between reactant accessibility to in-pore Pt nanoparticles and catalytic activity using a reaction kinetic model.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Engineering, Electrical & Electronic
Uilian Jose Dreyer, Guilherme Dutra, Guilherme Heim Weber, Rafael Jose Daciuk, Manoel Feliciano da Silva, Ricardo Munoz Freitas, Daniel Rodrigues Pipa, Jean Carlos Cardozo da Silva, Marco Jose da Silva, Cicero Martelli
Summary: This study conducted field measurements using a Distributed Acoustic Sensing System (DAS) to identify horse gaits. Results demonstrated the ability to distinguish between three distinct horse gait patterns - walk, trot, and gallop, and determine the horse speed in each gait with a signal-to-noise ratio of about 30 dB.
IEEE SENSORS JOURNAL
(2021)
Article
Chemistry, Physical
K. S. Mohan, R. Marnadu, Yeonju Shin, K. V. Gunavathy, V. Balasubramani, Mohd Ubaidullah, Mohd Shkir, Vasudeva Reddy, Woo Kyoung Kim
Summary: A simple spray pyrolysis method was used to grow Yb2O3 on aluminoborosilicate glass substrates at different temperatures. The structure and composition of the film were characterized, and the impact of temperature on the film properties was investigated. The best results were obtained at a substrate temperature of 700 degrees C, including improved electrical conductivity and optical transparency.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Physical
Aikaterini Argyrou, Konstantinos Brintakis, Athanasia Kostopoulou, Emmanouil Gagaoudakis, Ioanna Demeridou, Vassilios Binas, George Kiriakidis, Emmanuel Stratakis
Summary: Highly-sensitive and stable ozone and hydrogen sensing elements based on well-crystalline rounded cube-shaped CsPbBr3 microcrystals were fabricated. These elements demonstrate enhanced gas sensing ability at room temperature compared to previous metal halide and oxide-based sensors, with fast detection and restoration times and remarkable repeatability even after long-term storage.
JOURNAL OF MATERIOMICS
(2022)
Article
Chemistry, Multidisciplinary
Viktoras Kabitakis, Emmanouil Gagaoudakis, Marilena Moschogiannaki, George Kiriakidis, Akmaral Seitkhan, Yuliar Firdaus, Hendrik Faber, Emre Yengel, Kalaivanan Loganathan, George Deligeorgis, Leonidas Tsetseris, Thomas D. Anthopoulos, Vassilios Binas
Summary: A solid-state hydrogen sensor based on CuSCN has been developed with excellent response to hydrogen concentration and low power consumption. Sensors with Pd electrodes show the highest signal response, and density functional theory calculations support the increase in conductivity of CuSCN due to atomic hydrogen species from noble metal electrodes.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Energy & Fuels
Athanasios Lampropoulos, Vassilios D. Binas, Leila Zouridi, Costas Athanasiou, Miguel A. Montes-Moran, J. Angel Menendez, Michalis Konsolakis, George E. Marnellos
Summary: The presented work investigates the properties and reactivity of Greek lignite fuel and ex-situ produced chars during CO2 gasification. The study found that thermal treatment leads to chars with higher fixed carbon content and less ordered surface structures. LG800 exhibited superior gasification reactivity due to its higher fixed carbon content and disordered surface structure.
Article
Engineering, Electrical & Electronic
Emmanouil Gagaoudakis, Viktor Kampitakis, Marilena Moschogiannaki, Angeliki Sfakianou, Thomas Anthopoulos, Leonidas Tsetseris, George Kiriakidis, George Deligeorgis, Fabrice Iacovella, Vasileios Binas
Summary: This study presents the gas sensing performance of Copper (I) Thiocyanate powder against O-3. The structure and energy band gaps were determined, and it was found that the material exhibits strong detection capability with low energy consumption for O-3 at room temperature.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Chemistry, Physical
Dimitrios Kotzias, Vassilios Binas, George Kiriakidis
Summary: Heterogeneous photocatalysis using semiconductor oxides like TiO2 is a promising solution for environmental pollutant degradation, with recent efforts focusing on modifying TiO2 for visible light activation in indoor environments. However, the use of TiO2-containing materials indoors may lead to the formation of harmful byproducts, impacting air quality and posing potential health risks.
Article
Engineering, Electrical & Electronic
M. Moschogiannaki, E. Gagaoudakis, G. Kiriakidis, V. Binas
Summary: This study examines the gas sensing properties of bimetallic cobalt-vanadium-oxide system under different deposition methods and substrate types. The results show that spin-coated sensors on glass substrate exhibit higher response towards hydrogen gas, while the CoV2O6 flexible PET sensors have a lower response. In addition, the study also investigates the sensor's performance under bending conditions and its repeatability and stability over time.
MICROELECTRONIC ENGINEERING
(2022)
Review
Materials Science, Multidisciplinary
Leila Zouridi, Ioannis Garagounis, Anastasios Vourros, George E. Marnellos, Vassilios Binas
Summary: This review examines the potential and challenges of using inkjet printing (IJP) in the fabrication processes of solid oxide fuel cells (SOFCs). The key aspects of IJP for SOFCs fabrication, including ink formulation, deposition, optimization, and characterization, are described in detail. The effect of inkjet-printed SOFCs on electrochemical performance is highlighted, demonstrating the overall potential of this fabrication technique. Challenges and opportunities for the future development of this topic are also discussed.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Chemistry, Multidisciplinary
Georgios Varvoutis, Stamatia A. Karakoulia, Maria Lykaki, Sofia Stefa, Vassilios Binas, George E. Marnellos, Michalis Konsolakis
Summary: This study investigates the effect of ZnO doping on the selectivity of Ni/CeO2 catalysts for CO2 hydrogenation. The presence of ZnO promotes CO production while inhibiting CH4 production. These findings provide insights into the catalytic mechanism of CO2 hydrogenation and the influence of surface chemistry on catalytic performance.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Chemistry, Analytical
Marilena Moschogiannaki, George Vardakis, Emmanouil Gagaoudakis, Stefanos Papadakis, Vassilios Binas
Summary: The advancement of physical processes and digital technologies has revolutionized our understanding of systems and led to the development of applications that enhance daily life, improve security, and reduce production costs. This study focuses on a custom-made Co3O4 gas sensing element, which can be integrated into a cyber-physical system for O-3 monitoring. The results show that the Co3O4 sensor, when used with low-cost, low-power micro-controller units, operates efficiently at room temperature with low power consumption. Furthermore, the sensor demonstrates enhanced gas sensing performance for ozone detection under low-pressure conditions.
Article
Chemistry, Multidisciplinary
Abdus Salam Sarkar, Ioannis Konidakis, E. Gagaoudakis, G. M. Maragkakis, S. Psilodimitrakopoulos, D. Katerinopoulou, L. Sygellou, G. Deligeorgis, Vassilios Binas, Ilias M. Oikonomou, Philomela Komninou, G. Kiriakidis, G. Kioseoglou, E. Stratakis
Summary: Recent advances in atomically thin 2D anisotropic group IVA-VI metal monochalcogenides (MMCs) are hindered by the challenge of monolayer isolation. However, a novel liquid phase exfoliation approach has been developed to overcome the strong interlayer binding energy of tin (II) sulfide (SnS) and successfully isolate highly crystalline SnS monolayers (1L-SnS). The exfoliated 1L-SnS crystals exhibit high carrier mobility and deep-UV spectral photodetection, making them ideal for nanoelectronic devices.
Article
Nanoscience & Nanotechnology
Sofia Stefa, Maria Griniezaki, Marinos Dimitropoulos, George Paterakis, Costas Galiotis, George Kiriakidis, Emmanuel Klontzas, Michalis Konsolakis, Vassilios Binas
Summary: In this study, the physicochemical properties and enhanced adsorption capacity of highly porous thin-layer graphitic carbon nitride (g-C3N4) nanosheets (CNNs) for dye separation were investigated. Highly porous g-C3N4 nanosheets were synthesized and compared with the bulk material. The results showed that the nanosheets had a well-oriented structure, adequate chemical stability, and a higher surface area. Adsorption experiments demonstrated that the nanosheets had excellent selective adsorption capacity for cationic dyes, with short equilibrium times. The experimental findings were further supported by theoretical calculations.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Physical
Athanasios Lampropoulos, Stamatia A. Karakoulia, Georgios Varvoutis, Stavros Spyridakos, Vassilios Binas, Leila Zouridi, Sofia Stefa, Michalis Konsolakis, George E. Marnellos
Summary: The individual and synergistic effect of Ni-based catalysts and an eutectic carbonate salt mixture on the CO2 gasification performance of olive kernels was investigated. It was found that the Ni/CeO2 catalyst showed a higher gasification reaction rate compared to Ni/Al2O3. The use of the carbonate salt mixture lowered the gasification temperatures and improved the carbon conversion efficiency. The combination of Ni-based catalysts and carbonate salt mixture enhanced the gasification process and increased the CO production rate.
Article
Materials Science, Multidisciplinary
S. Stefa, M. Zografaki, M. Dimitropoulos, G. Paterakis, C. Galiotis, P. Sangeetha, G. Kiriakidis, M. Konsolakis, V. Binas
Summary: In this study, porous g-C3N4 nanosheets with high surface area were prepared and found to exhibit superior photocatalytic performance for the degradation of dangerous chemical compounds.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Chemistry, Analytical
Emmanouil Gagaoudakis, Apostolos Tsakirakis, Marilena Moschogiannaki, Angeliki Sfakianou, Vassilios Binas
Summary: NiO/SnO2 heterostructures were prepared via the polyol process and found to exhibit response to NO gas at room temperature. The morphology of the heterostructures could be controlled by the temperature of thermal annealing. The effects of pH and thermal annealing on the gas-sensing properties were investigated.
Article
Materials Science, Multidisciplinary
Majid Ghanimati, Mohsen Lashgari, Fabio Montagnaro, Vassilios Binas, Michalis Konsolakis, Marco Balsamo
Summary: The synthesis of low-cost, eco-friendly semiconducting solar-energy materials with excellent photocatalytic activity is important for environmental remediation, green energy, and fuel production. In this study, a magnetic heterojunction of CoMn2O4-MgFe2O4 and reduced graphene oxide (rGO) was synthesized, and the resulting nanocomposite exhibited improved reactant adsorption capacity and enhanced photocatalytic activity for hydrogen fuel production.
MATERIALS ADVANCES
(2023)
Article
Materials Science, Multidisciplinary
Ping Zhang, Xiujie Yue, Yeran Gao, Zhenyong Lin, Shunxiang Wang, Songting Zhang
Summary: This paper investigates the strengthening mechanism of highspeed cutting and solid particle-entrained waterjet peening (HSC-WJP) composite reinforcement on 7075-T6 aluminum alloy. The research results show that composite reinforcement can improve surface quality, reduce surface pits and roughness, and decrease the size of precipitation-free zone (PFZ) at grain boundaries.
Article
Materials Science, Multidisciplinary
Sangyoon Lee, Hwi Yoon, Sanghun Lee, Seung-min Chung, Hyungjun Kim
Summary: The wettability of metal oxides, particularly HfO2 thin films deposited via atomic layer deposition, and its correlation with surface free energy have been studied. It was found that surface oxygen species significantly affect the intrinsic hydrophilicity of HfO2 thin films, and the crystalline orientations also evolve with film thickness.
Article
Materials Science, Multidisciplinary
Changdong Yin, Yiwen Wu, Zhou Xu, Dongdong Ye, Jun Yao, Jianjun Chen, Qiang Liu, Xin Ge, Meiling Ding
Summary: This study proposed a new strategy to indirectly estimate the hydrogen diffusivity of metallic materials under tensile stress by combining the electrochemical hydrogen permeation test (EHPT), the hydrogen diffusion descriptive equation based on Fick's law, and hydrogen pre-charged tensile test. The results showed that the hydrogen permeation curve obtained was highly approximate to the theoretical trend. The hydrogen embrittlement (HE) susceptibility of the specimens increased with increasing stress.
Article
Materials Science, Multidisciplinary
Huan Luo, Wei-yi Wang, Xin Yu, Xian-jun Lei, Lang Liu, Guo-zheng Zha, Wen-long Jiang, Bin Yang, Bao-qiang Xu
Summary: Separating selenium and tellurium is a general challenge in material and non-ferrous metallurgical industries. This paper proposes a novel method that achieved efficient separation of selenium and tellurium using gas-liquid equilibrium phase diagram and valence regulation-vacuum gasification technique.
Article
Materials Science, Multidisciplinary
Fan Zhang, Rong Xin Wang, Aiqin Tian, Fangzhi Li, Jianping Liu, Hui Yang
Summary: Deposition of Pd/Pt/Au three-layer films on p-GaN under high and ultra-high vacuum conditions was studied to investigate the electrical contact properties. Linear I-V curves were observed in samples deposited under ultra-high vacuum conditions, while nonlinear I-V characteristics were obtained in samples deposited under high vacuum conditions. The study also found that the samples deposited under high vacuum conditions had higher amounts of oxygen and Pd oxide. The oxide layer had an additional influence on the electrical characteristics of the Pd/Pt/Au/p-GaN contact.
Article
Materials Science, Multidisciplinary
Hongli Liu, Chengzhe Liu, Ying Sui, Zhongxian Liu, Tiangang Zhang, Zhiqiang Zhang, Shuang Sun, Jianwei Jia
Summary: This study utilized polysiloxane and hafnium carbide to produce Si-N-C-O-Hf hybridized ceramic fibers, and obtained ceramic fibers with hemispherical particles on the surface through electrostatic spinning and pyrolysis. The ceramic fibers exhibited excellent thermal stability, oxidation resistance, and high temperature insulation.
Article
Materials Science, Multidisciplinary
M. Abaker, Nazar Elamin Ahmed, A. Saad, H. F. Khalil, E. M. M. Ibrahim, A. M. Adam
Summary: This paper systematically studied the internal structure and thermoelectric properties of In1-xGaxSb alloys prepared by melting synthesis at 1123 K. The results showed that doping with Ga in the In sites led to a significant increase in the Seebeck coefficient and power factor, while reducing the thermal conductivity. The maximum dimensionless figure of merit was observed at 403 K.
Article
Materials Science, Multidisciplinary
Fucheng Yu, Jinlong Ren, Jielin Zhang, Haiyang Chen, Xin Tian, Chenchen Feng, Cuixia Li, Jianbin Zhang, Xianxi Tang, Xiaogang Hou
Summary: An environmentally friendly ZnO@BiVO4 composite photocatalyst was prepared using in-situ self-assembly and solvothermal methods, demonstrating good photocatalytic performance. The mass ratio of BiVO4 and NCZ was found to influence the photocatalytic performance of the composite.
Article
Materials Science, Multidisciplinary
Yaoming Shao, Pingping Zheng, Tianhao Dong, Lianghuan Wei, Haifei Wu, Jianxiao Si
Summary: In this paper, Mg3Bi2 films were prepared on glass substrate using magnetron sputtering, and the phase composition and thermoelectric properties of the films were investigated with different atomic ratios. The films displayed a metastable cubic phase and high conductivity when the atomic ratio exceeded stoichiometry.
Article
Materials Science, Multidisciplinary
I. V. Uimanov, D. L. Shmelev, S. A. Barengolts
Summary: A two-dimensional axisymmetric model has been developed to study the prebreakdown processes in a cathode microprotrusion under an external electric field. The simulation results show that electrohydrodynamic instability leads to the formation of a nanometer-sized conical protrusion on the microprotrusion tip, significantly accelerating the heating process.
Article
Materials Science, Multidisciplinary
Weilun Zhang, Di Yang, Feng Gong, Yongjun Chen, Tian Chen, Zhiwen Xie, Sirui Yang
Summary: A novel Pt doping method was designed to improve the thermal stability of CrWN coating. The doping of Pt atoms effectively blocks the coherent growth of the grains and creates a significant mixing effect, resulting in a smooth surface with uniform element distribution.
Article
Materials Science, Multidisciplinary
Xiaoye Wang, Xiaoguang Yang, Wenna Du, Tao Yang
Summary: In this study, the effects of multiple growth parameters on self-catalyzed growth of InAs/GaSb axial heterostructured nanowires on Si substrate by MOCVD were investigated. It was found that the growth temperature and switching time have significant influences on the nanowire growth.
Article
Materials Science, Multidisciplinary
Weizhong Cui, Yan Zhao, Can Cui, Xing Liu, Beili Pang, Jianguang Feng, Hongzhou Dong, Liyan Yu, Lifeng Dong
Summary: This study introduces Co2+ cations into Cs2AgBiBr6 film to improve its quality, grain size, and conductivity, resulting in enhanced solar cell efficiency.
Article
Materials Science, Multidisciplinary
Jian Wang, Ke Yang, Xianming Cheng, Yalin Lu, Ganghui Wu, Yang Zhang, Yun Kan
Summary: The corrosion behavior and microstructural evolution of Sc microalloyed Al-3.2Cu-1.5Li alloys were investigated in detail. The microstructural results showed higher levels of dislocations density in the Sc microalloyed sample, which resulted in significantly refined grains and T1 precipitates. Microalloying with Sc changed the corrosion mode of the alloy and localized corrosion was found to occur preferentially at the subgrain within unrecrystallized grains with high grain stored energy.
Article
Materials Science, Multidisciplinary
Weifeng Liu, Na Liu, Kaiqiang Song, Meiqin Zeng, Zhongchen Lu
Summary: Monoclinic WO3 prepared through plasma milling exhibits higher photocatalytic activity due to its higher surface area, increased oxygen vacancies, and defects.
