Article
Materials Science, Multidisciplinary
Muthe Srikanth, A. Raja Annamalai, A. Muthuchamy
Summary: In this study, W-Ni-Co, W-Ni-Co-Ta, and W-Ni-Co-B4C medium-heavy alloys and alloy composites were developed using the spark plasma sintering technique. Extensive metallurgical and mechanical testing was conducted to investigate structure-property correlations of the different compositions.
Article
Chemistry, Physical
Sergii Teslia, Ievgen Solodkyi, Oleksandra Yurkova, Oleksii Bezdorozhev, Iurii Bogomol, Petro Loboda
Summary: The thermodynamic, kinetic, and thermal compatibilities of the phases in (WC-W2C)/10 wt% AlFeCoNiCrTi composite were studied. Different phases were formed at different temperatures, indicating controlled kinetic interaction processes and limited solubility. Thermal compatibility was evaluated through CTE measurements, showing similar values between AlFeCoNiCrTi and WC-W2C.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Alexandre Margueret, Luca Balice, Karin Popa, Michael Holzhaeuser, Emanuele De Bona, Walter Bonani, Antonio Bulgheroni, Fabienne Audubert, Marco Cologna
Summary: We analyzed the densification of UO2 nanopowders in SPS under different conditions and found that the apparent activation energy of densification in SPS is smaller than that in conventional sintering. We also observed a threshold stress for the transition from pressure-insensitive sintering to pressure-assisted sintering.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
E. De Bona, L. Balice, L. Cognini, M. Holzhauser, K. Popa, O. Walter, M. Cologna, D. Prieur, T. Wiss, G. Baldinozzi
Summary: Three different spark plasma sintering (SPS) treatments were applied to highly interactive, near-stoichiometric UO2.04 nanocrystalline powders. The sintering conditions for reaching 95 % theoretical density were determined in regular SPS, high pressure SPS, and two-step SPS. The goal was to minimize grain growth during densification and achieve equally dense UO2 samples of different grain sizes, followed by a final annealing treatment to reduce hyperstoichiometric samples to UO2.00.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Review
Chemistry, Physical
K. E. Smetanina, P. V. Andreev, A. V. Nokhrin, E. A. Lantsev, V. N. Chuvildeev
Summary: This review focuses on the origins and mechanisms of carbonization in different materials, such as metallic and hard alloys, ceramics, and transparent ceramics. It discusses the effects of carbon diffusion on the chemical and phase composition, microstructure, and physical and mechanical properties of samples. Two main mechanisms of carbon interaction with the materials are proposed: carbon diffusion into the surface layers and condensation of carbon-containing gases in the pores of the sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Materials Science, Ceramics
C. Guerin, A. Bassoulet-Saintonge, A. Allemand, A. Maitre, R. Boulesteix, T. Piquero, Y. Le Petitcorps
Summary: The barium aluminosilicate compound (BaAl2Si2O8 or BAS) was synthesized using powder reactive sintering in a Spark Plasma Sintering (SPS) device. The reaction pathways between the precursors (alumina, silica, and barium carbonate powders) were investigated at different temperatures from 900 to 1550 degrees Celsius to obtain the desired hexacelcian crystallographic form of BAS without any unwanted compounds. A three-step thermal treatment was proposed to achieve a fully dense and nearly pure (98 wt%) BAS.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Anna Veverkova, Jiri Kozlik, Kristina Bartha, Tereza Kosutova, Cinthia Antunes Correa, Hanka Becker, Tomas Chraska, Milos Janecek, Josef Strasky
Summary: A combination of cryogenic milling and spark plasma sintering can produce an ultrafine-grained two-phase microstructure.
MATERIALS CHARACTERIZATION
(2021)
Article
Nanoscience & Nanotechnology
Michal Knapek, Peter Minarik, Adam Gres, Maria Zemkova, Frantisek Lukac, Jan Bohlen, Frantisek Chmelik, Robert Kral
Summary: This study utilized the spark plasma sintering (SPS) technique to prepare a Mg-4wt.%Y-3wt.%Nd material (WN43) with outstanding mechanical properties and excellent plastic elongation. By suppressing the detrimental effect of oxide shells on the powder particles, the strong interconnection of the particles was achieved. The material retained the fine powder microstructure and exhibited ductility and strength comparable to conventionally-prepared Mg-RE alloys.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Chemistry, Physical
A. Raja Annamalai, A. Muthuchamy, Muthe Srikanth, Senthilnathan Natarajan, Shashank Acharya, Anup Khisti, Chun-Ping Jen
Summary: The addition of molybdenum to the W-Ni-Fe alloy significantly affects its material properties, with the 45W-45Mo alloy showing the smallest grain size and highest mechanical strength, while the 67.5Mo alloy exhibits the highest hardness.
Article
Chemistry, Physical
M. Suarez, D. Fernandez-Gonzalez, L. A. Diaz, F. Diologent, L. F. Verdeja, A. Fernandez
Summary: The study successfully sintered ZrCu39.85Y2.37Al1.8 metallic glass using SPS technology, achieving almost 100% relative density and excellent mechanical properties at 390 degrees C. Sintering at temperatures higher than 390 degrees C resulted in sample crystallization, but the metallic glass shows promise for applications in the jewelry industry.
Article
Materials Science, Multidisciplinary
Joamin Gonzalez-Gutierrez, Yvonne Thompson, David Handl, Santiago Cano, Stephan Schuschnigg, Peter Felfer, Christian Kukla, Clemens Holzer, Carlo Burkhardt
Summary: Powder extrusion moulding is a versatile and cost-effective technology for producing bidimensional shapes from metals, ceramics, and cermets. The quality of PEM is affected by powder content, with higher powder content resulting in lower shrinkage and higher dimensional stability. Hardness of the extruded parts depends on the initial binder content and resulting carbon content.
Article
Materials Science, Ceramics
Cristina Ojalvo, Victor Zamora, Rodrigo Moreno, Fernando Guiberteau, Angel L. Ortiz
Summary: An ultrafine-grained B4C composite with superior wear resistance was developed through fabrication, microstructural characterization, and mechanical and tribological testing. The study optimized the preparation process, identified the optimal sintering parameters, investigated the wear behavior, and compared it with a reference fine-grained B4C composite, demonstrating the potential for fabricating B4C tribocomponents with greater superior wear resistance.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Review
Materials Science, Multidisciplinary
Mohammad Abedi, Saeed Sovizi, Abolfazl Azarniya, Diletta Giuntini, Melica Esmaeeli Seraji, Hamid Reza Madaah Hosseini, Chinappan Amutha, Seeram Ramakrishna, Alexander Mukasyan
Summary: In this review, the application of Spark Plasma Sintering (SPS) technology in the production of metallic materials is analyzed. The effects of SPS parameters on the density, microstructure evolution, and physicomechanical properties of metallic parts are comprehensively investigated. The trends of the influence of SPS parameters on metallic materials are summarized, and various microstructural phenomena are addressed.
CRITICAL REVIEWS IN SOLID STATE AND MATERIALS SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Neal D. Gaffin, Justin L. Milner, Kelsa B. Palomares, Timothy Ironman, Steven J. Zinkle
Summary: Molybdenum alloys are important for high temperature applications in aerospace and nuclear industries. Spark plasma sintering produces dense refractory metals with desirable microstructural characteristics, where the starting powder size and morphology play a crucial role. Powder geometry has the greatest impact on the sintering of Mo30W powders, while powder size has less contribution. Optimum sintering temperatures can be determined for different powder types.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2022)
Article
Materials Science, Ceramics
C. H. Jeong, E. Vijayakumar, H. G. Lee, W. H. Lee
Summary: In this work, different yttria-stabilized zirconia-titanium (YSZ-Ti) composite compacts were fabricated using electric discharge sintering (EDS) and spark plasma sintering (SPS) methods. The microstructures and mechanical properties of the compacts were analyzed and compared. The results showed that the EDS composite compacts had a uniform distribution of YSZ throughout the Ti matrix, resulting in significantly improved mechanical properties. On the other hand, in the SPS composite compacts, the YSZ content was mainly agglomerated and dispersed at the Ti particle boundaries. The mechanical properties of the SPS compacts were enhanced with increasing YSZ content but not as much as the EDS processed compacts.
CERAMICS INTERNATIONAL
(2022)
Review
Materials Science, Multidisciplinary
Ekaterina Novitskaya, James P. Kelly, Sarit Bhaduri, Olivia A. Graeve
Summary: The solution combustion synthesis technique is a versatile method for producing powders, particularly oxides, with ease of implementation and high-throughput, but limitations such as powder agglomeration and lack of control over morphology exist. Factors like fuel type, fuel-to-oxidizer ratio, and combustion temperature should be considered when applying this technique.
INTERNATIONAL MATERIALS REVIEWS
(2021)
Article
Chemistry, Physical
Ekaterina Novitskaya, Aaron Manheim, Manuel Herrera, Olivia A. Graeve
Summary: The mechanoluminescence response of oxide materials is closely related to the presence of oxygen vacancies, making it useful for structural health monitoring applications. Cathodoluminescence spectra measurements can confirm the presence of various centers (such as F+ and M centers) and emission intensity related to electronic transitions.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Multidisciplinary Sciences
Elizabeth M. Bullard, Ivan Torres, Tianqi Ren, Olivia A. Graeve, Kaustuv Roy
Summary: This study indicates that under 60 years of ocean warming and acidification, the shell mineralogy of the California mussel has undergone significant changes, with an increase in shell calcite and a decrease in aragonite content. The results suggest that ocean pH and saturation state play a strong role in mediating the shell mineralogy of this species, highlighting long-term changes in response to ocean acidification.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Materials Science, Multidisciplinary
Ekaterina Novitskaya, Keyur Karandikar, Kira Cummings, Martha Mecartney, Olivia A. Graeve
Summary: The study found that alumina exhibited significantly higher hardness values and Hall-Petch constants in single-phase samples, and in alumina-containing composites in multiphase samples. The microhardness values of all binary and ternary composites followed a rule of mixtures for different grain sizes, with alumina and alumina-containing composites demonstrating improved mechanical performance. These results are significant as they establish a relationship between grain sizes and mechanical response in the materials studied.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
Veronica J. Huerta, Paloma Fernandez, Virginia Gomez, Olivia A. Graeve, Manuel Herrera
APPLIED MATERIALS TODAY
(2020)
Article
Chemistry, Physical
Robyn E. Ridley, Hoorshad Fathi-Kelly, James P. Kelly, Victor R. Vasquez, Olivia A. Graeve
Summary: The hypothesis suggests that reverse micellar solutions are stable systems where surfactant molecules surround water droplets in an organic phase. Through experiments, it was found that the size of reverse micelles can be described by the Debye screening length, cation valency, and specific anion hydrated radius. The model accurately predicts reverse micelle sizes when monovalent, divalent, and trivalent salts are added, as long as the primary hydrolyzed cation species has a charge equal to the cation valency.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Materials Science, Ceramics
Seongcheol Choi, Carson Cheung, Olivia A. Graeve
Summary: This study describes the manufacturing of a solid-oxide fuel cell anode with micro-scale continuous linear pores and nano-scale interparticle pore structures, achieved through sacrificial templating method. The highly regular pores are expected to enhance mass transport of hydrogen gas at the active sites, leading to increased energy efficiency of the fuel cell. Simulation results show that an optimal pore size can maximize mass transport acceleration while minimizing concentration overpotential.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Physical
Tianqi Ren, Richard Tran, Sebastian Lee, Aric Bandera, Manuel Herrera, Xiang-Guo Li, Shyue Ping Ong, Olivia A. Graeve
Summary: The study investigates the transition of nanoparticle shapes from round/irregular to cubes and cuboctahedrons upon the addition of transition metal dopants in tantalum carbide nanoparticles. The presence of dopants leads to atomic orbital hybridization and a significant decrease in surface energy of the (100) facets, thereby driving the formation of nanocubes with exposed (100) surfaces. These principles can be applied to other ceramics for optimized control of shape in powders.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Materials Science, Multidisciplinary
Onyekachi Kalu, Carlos Rodriguez-Fernandez, J. Cardoso, Maria R. Correia, Andres Cantarero, Gabriel Rojas, Jose Alberto Duarte Moller, A. Reyes-Rojas
Summary: Temperature-dependent near band edge and local defects emissions were observed in Cd0.025Mg0.10Zn0.875O (CdMgZnO) nanoparticles, with crystallographic parameters indicating growth within the wurtzite phase and a preferred orientation along the (101) plane. Valence Electron Energy Loss Spectroscopy (VEELS) provided information on the band structure and interband transitions, revealing an onset bandgap of 3.2 +/- 0.3 eV for Cd/Mg co-doped ZnO. The study also analyzed the temperature-dependent photoluminescence properties and enhancement of the optically active local defects emission.
Article
Chemistry, Multidisciplinary
Robyn E. Ridley, Hoorshad Fathi-Kelly, James P. Kelly, Victor R. Vasquez, Olivia A. Graeve
Summary: Colloidal systems, including micelles and reverse micelles, play a crucial role in natural transport processes. Previous experiments have shown that reverse micelles contract linearly with increased salt concentrations, and a new theoretical model based on electrical double layer theory has been proposed. The destabilization of reverse micelles is likely due to ion hydration capacity exceeding the water contained within the micelle at its stable size.
ACS EARTH AND SPACE CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Olivia A. Graeve, Jorge A. Arroyave Garcia de la Cadena, Aranza S. Martinez Lopez
Summary: ENLACE is a bi-national summer research program that encourages students to engage in scientific and engineering research, promotes friendship between the United States and Mexico, and provides a rich curriculum on social issues.
Article
Materials Science, Multidisciplinary
James P. Kelly, Ved S. Vakharia, Ekaterina Novitskaya, Olivia A. Graeve
Summary: The mechanical behavior of (Ta1-xWx)C-10 vol% WC composites is described, showing significant enhancement in strength compared to pure TaC. The composites also exhibit lower sintering temperatures and higher densification, providing a promising guideline for enhancing densification and functionality of ultrahigh-temperature ceramics.
ADVANCED ENGINEERING MATERIALS
(2022)
Review
Materials Science, Multidisciplinary
Olivia A. Graeve, Mireya S. Garcia-Vazquez, Alejandro A. Ramirez-Acosta, Zachary Cadieux
Summary: This review focuses on two interrelated areas, materials processing and machine learning techniques, for the development of novel amorphous metallic alloys. It describes findings, barriers, and opportunities in powder production and sintering, additive manufacturing, and postprocessing techniques, as well as the latest developments in artificial intelligence algorithms for the design of new alloys and alloy classification tasks.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Maritza Sanchez, Katherine A. Acord, Samuel Frueh, Lisa M. Rueschhoff, Olivia A. Graeve
Summary: This study investigates the effect of Hf content on the oxidation resistance of TaC-HfC sintered specimens. The results show that increasing HfC content leads to a reduction in oxide scale thickness and mass ablation rate, attributed to the formation of a Hf6Ta2O17 phase. These findings suggest that TaC-HfC materials have superior oxidation resistance and are promising for the development of high-speed flight coatings.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Chemistry, Physical
C. Ingram Vargas-Consuelos, Marco A. A. Camacho-Lopez, Victor H. H. Ramos-Sanchez, Olivia A. A. Graeve
Summary: We investigated the effect of sodium ions (Na+) on the nucleation process and phase selectivity for the formation of hexagonal molybdenum trioxide crystals (h-MoO3). The interaction of Na+ with the precursor solution of metallic molybdenum dissolved in a mixture of hydrochloric and nitric acids was found to contribute to the phase selectivity during the reaction. The addition of NaCl resulted in an electrostatic interaction with the aquo (H2O) and chloro (Cl-) ligands in the precursor solution, enabling the formation of h-MoO3 over other crystalline phases.
JOURNAL OF PHYSICAL CHEMISTRY C
(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.
