Article
Chemistry, Physical
Osman Kahveci, Harun Erol, Omar Taher Joban Joban, Mehmet Gunduz
Summary: The grain boundary groove method has been successfully used to measure the Gibbs-Thomson coefficient and solid-liquid interfacial energies for various materials, demonstrating its applicability across different systems. By observing the grain boundary groove shapes, the Gibbs-Thomson coefficient and solid-liquid interfacial energies can be determined.
Article
Chemistry, Physical
Sreya Sarkar, Mohamad Jafari Gukeh, Tamal Roy, Harshad Gaikwad, Francesco Maria Bellussi, Shashwata Moitra, Constantine M. Megaridis
Summary: The interfacial energy between a solid and a liquid plays a crucial role in determining the macroscopic wettability of the surface by the fluid and is essential for controlling fluid-transport phenomena in commercial devices/products. While there are indirect or theoretical methods to quantify this energy, there is a lack of direct experimental procedures for measuring it on realistic rough surfaces. This study proposes a methodology that utilizes dynamic contact-angle experiments on rough surfaces to determine the interfacial energy.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Tianhao Wu, Abbas Firoozabadi
Summary: This study derived working expressions for estimating solid-fluid interfacial free energy considering solid deformation, showing significant impact. Solid deformation contribution highly depends on stress conditions, either positive or negative. Fluid adsorption onto solid surface has significant effect on interfacial free energy, with weak adsorption similar to solid-vacuum surface energy and strong adsorption resulting in reduction.
JOURNAL OF PHYSICAL CHEMISTRY A
(2021)
Article
Chemistry, Multidisciplinary
Jiang Cui, Jong Heon Kim, Shanshan Yao, Abdelbast Guerfi, Andrea Paolella, John B. Goodenough, Hadi Khani
Summary: A melt-quenching approach is developed to solve the issue of high interfacial resistance in solid-state batteries. By uniformly coating the garnet-type solid electrolyte surface with a lithiophilic AgSn0.6Bi0.4Ox layer, the interfacial resistance is eliminated, allowing dendrite-free lithium plating and stripping at a high current density. The excellent electrochemical performances are attributed to the uniform coating on the garnet surface and easy lithium diffusion through the coating layer. The all-solid-state full cell with the surface modified garnet-type solid electrolyte maintains 86% of its initial capacity after 1000 stable cycles at 1 C.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Chenglin Huang, Jiang Wang, Sansan Shuai, Jun Wang, Ruibin Nan, Rui Guo, Shilei Li, Chuanjun Li, Chaoyue Chen, Zhongming Ren
Summary: This study aimed to determine the solid/liquid interfacial energies of an Al-2.5at pct Cu alloy at 568 degrees C under different intensities of static magnetic field (SMF) using the dihedral angle method. The results showed that the interfacial energies in the Al-Cu alloy increased with increasing SMF intensities between 0 and 12 T. Experimental results revealed a threefold variation in the interfacial energies. The theoretical prediction of the interfacial energies under SMF was consistent with the experimental results.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2023)
Article
Polymer Science
Hongwei Li, Martin Fauquignon, Marie Haddou, Christophe Schatz, Jean-Paul Chapel
Summary: The study systematically investigated the surface activity of polyelectrolyte complex (PECs) suspensions as a function of the molar charge ratio Z. It was found that the surface tension of PECs decreases as the system approaches charge stoichiometry. The behavior of complex systems at stoichiometry is informative about the physical nature of the complexes.
Article
Chemistry, Multidisciplinary
Xiaobo Chen, Jianyu Wang, Yaguang Zhu, Zhenhua Xie, Shuonan Ye, Kim Kisslinger, Sooyeon Hwang, Dmitri N. Zakharov, Guangwen Zhou
Summary: Noncatalytic gas-solid reactions are commonly assumed to be irreversible, but this study shows the existence of reverse elements in the Ni oxidation reaction, resulting in NiO reduction. The oxidation process involves preferential CO2 adsorption along step edges, while the reduction process involves preferential CO adsorption on step edges. Temperature and CO2 pressure effect maps are constructed to illustrate the dynamics of the competing NiO redox reactions. This study demonstrates the ability to manipulate gas-solid reactions by controlling the gas environment or atomic structure of the solid surface.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
R. E. Rozas, L. G. MacDowell, P. G. Toledo, J. Horbach
Summary: The crystal growth kinetics and interfacial properties of titanium were studied using molecular dynamics computer simulation. The melting temperature at zero pressure, kinetic growth coefficients for different crystal orientations, anisotropic interfacial stiffnesses and free energies, and growth coefficients from equilibrium fluctuations were determined. The estimates were found to be consistent even without coupling the system to a thermostat.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Shang Wang, He Zhang, Yue Li, Weiwei Zhang, Chunjin Hang, Yanhong Tian
Summary: The reliable bonding of thick Al wires and plated Au pad is crucial for power module packaging. Microscopic observation showed significant interdiffusion of Al, Au and Cu elements, leading to the formation of intermetallic compounds at the Al/Au/Cu joint interfaces after parallel gap micro-resistance welding. Liquid Al reacts with Au to form (Au, Cu) Al-2 IMC phase rapidly, while excessive Al atoms diffuse through the Cu-based solid solution and react with Cu to form (Cu, Au) Al-4 IMC phase within 20 ms.
Article
Chemistry, Multidisciplinary
Weida Zeng, Peirong Li, Yun Huang, Ao Xia, Xianqing Zhu, Xun Zhu, Qiang Liao
Summary: This study explored the essential principle of microalgal cell adhesion onto solid substrates from the perspective of the interaction energy between microalgal cells and solid substrates. The influence of surface properties between microalgal cells and solid substrates on interaction energies was discussed. The results showed that surface properties, including surface potential and surface free energy components, significantly affect the adhesion tendency of microalgal cells on different solid substrates.
Review
Automation & Control Systems
Minyung Song, Karen E. Daniels, Abolfazl Kiani, Sahar Rashid-Nadimi, Michael D. Dickey
Summary: Recent studies have shown that electrochemical oxidation can significantly decrease the interfacial tension of liquid metals, from approximately 500 mN m(-1) at 0 V to approximately 0 mN m(-1) at less than 1 V. This reversible and controllable change in tension surpasses what is achievable through conventional electrocapillarity or surfactants. The report aims to introduce beginners to this field, clarify misconceptions, and discuss applications and future challenges related to modulating the interfacial tension of liquid metals.
ADVANCED INTELLIGENT SYSTEMS
(2021)
Article
Chemistry, Physical
Chenglin Huang, Sansan Shuai, Jun Wang, Ling Shi, Shilei Li, Ruibin Nan, Chuanjun Li, Jiang Wang, Zhongming Ren
Summary: The effect of static magnetic field (SMF) on the interfacial energy of solid Al2Cu and eutectic melt was investigated using the dihedral angle and grain boundary groove methods. It was found experimentally that the solid/liquid interfacial energy varied up to three times with SMF. The interfacial energy showed a decreasing trend with increasing SMF in both methods. The decrease was attributed to thermoelectric magnetic convection at different scales and explained by the magnetic dipole theory and structural ordering based on Ewing's model.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Tsang-Tse Fang
Summary: This paper assesses existing criteria for forming single-phase multicomponent solid-solution alloys (MCSSAs) and proposes a new criterion based on the topology of atomic packing. A new mechanism is posited where the multicomponent effect in the surface layer reduces the surface free energy of nanocrystalline nucleus, playing a significant role in the development of MCSSAs. Additionally, a more reasonable interpretation regarding the phase stability of the CoCrFeMnNi alloy annealed at different temperatures is provided.
SCRIPTA MATERIALIA
(2021)
Article
Chemistry, Multidisciplinary
Yaqiang Li, Hongyu Zhou, Chunjing Wu, Zheng Yin, Chang Liu, Junyou Liu, Zhongliang Shi
Summary: Diamond/Cu composites with Ti-coating were prepared using a liquid-solid separation technology. The formation of TiC phase improved the interfacial bonding between diamond and copper, resulting in a thermal conductivity of 457.22 W·m(-1)·K-1 for 40 vol.% Ti-coated diamond/Cu composites. The thermal conductivity showed a significant decrease with increasing TiC layer thickness, reaching a critical value of approximately 260 nm, as estimated by the differential effective medium model.
Article
Materials Science, Multidisciplinary
Shirong Zhu, Qiaoli Lin, Rui Cao, Kaibin Xie, Jinxin Lai
Summary: In the process of measuring the surface tension of Ga and Ga-based liquid metals using the pendant-drop method, two factors were found to lead to inaccurate results. Firstly, the presence of an oxide film on the surface of the pendant-droplet, which exhibits viscoelasticity. Secondly, the volume of the pendant-drop did not exceed the critical value for accurate measurements.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Chemistry, Physical
L. Somlyai-Sipos, P. Baumli, A. Sycheva, G. Kaptay, E. Szori-Doroghazi, F. Kristaly, T. Miko, D. Janovszky
APPLIED SURFACE SCIENCE
(2020)
Article
Materials Science, Multidisciplinary
Dheeraj Varanasi, Daniel Koncz-Horvath, Anna Sycheva, Peter Baumli, George Kaptay
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2020)
Article
Materials Science, Multidisciplinary
M. Czagany, D. Varanasi, A. Sycheva, D. Janovszky, D. Koncz-Horvath, F. Kristaly, P. Baumli, G. Kaptay
Summary: The Cu/AlN-Al2O3 nano-multilayer was deposited on 42CrMo4 steel samples using magnetron sputtering method, revealing that at high temperatures, Cu nanocrystals coarsen and migrate within the multilayer, even forming micron-sized reservoirs. As the temperature increases, cracks appear in the AlN-Al2O3 layers, causing Cu to be exposed on the surface of the NML.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Shiyi Wen, Yuling Liu, George Kaptay, Yong Du
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2020)
Article
Engineering, Chemical
Alexandra Jakab-Nacsa, David Stomp, Laszlo Farkas, George Kaptay
Summary: Experimental studies have shown a strong positive effect of NaCl addition on the decomposition rate of chlorate in aqueous solutions. It is more reasonable in the chlor-alkali industry to first saturate the brine with sodium chloride and then eliminate chlorate by adding HCl to protect the electrolysis cell from chlorate ions.
PERIODICA POLYTECHNICA-CHEMICAL ENGINEERING
(2021)
Editorial Material
Materials Science, Multidisciplinary
George Kaptay, Philip Nash
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Xavier Mettan, Edoardo Martino, Lidia Rossi, Jacim Jacimovic, Juraj Krsnik, Osor S. Barisic, Norbert Babcsan, Sandor Beke, Rajmund Mokso, George Kaptay, Laszlo Forro
Summary: Shaping metals into foam can modulate their physical properties, making them attractive for applications where lightweight, low thermal conductivity, and acoustic isolation are desired. Adjusting the size of bubbles in the foam is crucial for targeted applications. The study shows promising potential for the application of metal foams in thermoelectric materials.
ADVANCED ENGINEERING MATERIALS
(2021)
Article
Chemistry, Physical
D. A. Angel, T. Miko, F. Kristaly, M. Benke, Z. Gacsi, G. Kaptay
Summary: The study investigated the kinetics of transformation of 5 w% TiB2 nano-particles dispersed in a Ti matrix, finding that a complex Avrami kinetics described the transformation better than the classical one-step Avrami kinetics due to the formation of oxide inhibitors from contaminants.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
M. Czagany, D. Koncz-Horvath, P. Baumli, G. Kaptay
Summary: In this paper, AlN-Al2O3 coatings with thicknesses ranging from 50 to 680 nm were deposited on a steel substrate by magnetron sputtering, and the phase inversion process of the steel/ceramic/copper configuration to the steel/copper/ceramic configuration was investigated. The results showed that the wettability of solid deoxidized steel by liquid copper is good, while the wettability of the ceramic by copper is poor. The flow of copper along the cracks in the ceramic depends on the thickness of the ceramic and can be enabled when the coating thickness is below a critical value. The stability of the steel/copper/ceramic configuration is further enhanced by gravity.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Shiyi Wen, Yong Du, Jing Tan, Yuling Liu, Peng Zhou, Jianzhan Long, George Kaptay
Summary: In this study, a new thermal conductivity model was developed for two-phase composite materials, which can accurately reproduce experimental values and establish the temperature and grain size dependence. The model shows good agreement with measured data and provides a foundation for further development and material design in cemented carbides and particle-reinforced composite materials.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Zsolt Salyi, George Kaptay, Daniel Koncz-Horvath, Laszlo Somlyai-Sipos, Peter Zoltan Kovacs, Attila Lukacs, Marton Benke
Summary: The goal of this research is to study the applicability of the diffusion boriding process to enhance the lifetime of steel selective soldering tools. Experimental results show that the double-phase iron-boride coating exhibits excellent resistance against the aggressive liquid solder alloy, which is the main reason for the failure of selective soldering tools made of steel. Thermodynamic calculations support the results of the dissolution tests.
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
(2022)
Article
Chemistry, Physical
Shiyi Wen, Jing Tan, Jianzhan Long, Zhuopeng Tan, Lei Yin, Yuling Liu, Yong Du, George Kaptay
Summary: This study investigates the thermal conductivity of two-phase WC-Co-Ni cemented carbides and its dependence on phase composition, temperature, and WC grain size. Through a combination of experiments and models, a reliable model for calculating the thermal conductivity of two-phase WC-Co-Ni is established and verified using experimental data. Furthermore, this model is used to predict the thermal conductivity of two-phase WC-Co-Ni under different phase-fractions, temperatures, and WC grain sizes, which can aid in designing cemented carbides with desired thermal conductivities.
Article
Thermodynamics
Dora Janovszky, Maria Sveda, Anna Sycheva, Ferenc Kristaly, Ferenc Zamborszky, Tomasz Koziel, Piotr Bala, Gyorgy Czel, George Kaptay
Summary: The passage highlights the significant number of scientific papers on bulk amorphous alloys and metallic glasses. Utilization of DSC is crucial in studying and developing amorphous alloys, as well as ensuring quality. The research focuses on a variety of properties determination and microstructural transformations induced by thermal treatment.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Metallurgy & Metallurgical Engineering
D. Varanasi, K. E. Aldawoudi, P. Baumli, D. Koncz-Horvath, G. Kaptay
Summary: This study aimed to measure the non-wetting to wetting transition temperatures of liquid tin on various steel surfaces in vacuum conditions. The experiment found that the contact angles of liquid tin on steel surfaces decreased with increasing temperature, with varying transition temperatures between low alloyed steels and high chromium steels. The formation of intermetallic compounds at the interface contributed to the relatively high contact angle values observed, which were different from metal/metal couples like liquid Cu on steel.
ARCHIVES OF METALLURGY AND MATERIALS
(2021)