Article
Materials Science, Ceramics
Vikram Hastak, Edward Jonas Gildersleeve, Srikanth Batna, Ashutosh Suresh Gandhi, Sanjay Sampath
Summary: Yttria-stabilized zirconia thermal barrier coatings were deposited by air plasma spraying using different purity feedstock powders and subjected to short-term low-temperature annealing. Significant structural changes and changes in thermal conductivity and elastic modulus were observed, with high-purity coatings showing larger changes compared to commercial purity coatings.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Physical
Zydrunas Kavaliauskas, Romualdas Kezelis, Mindaugas Milieska, Liutauras Marcinauskas, Vitas Valincius, Mindaugas Aikas, Rolandas Uscila, Arunas Baltusnikas, Audrius Zunda
Summary: Yttria-stabilized zirconia (YSZ) coatings were deposited at different arc currents using atmospheric plasma spraying, and their properties were studied through various tests. The results showed that increasing arc current enhanced surface oxidation of YSZ coatings, while YSZ coatings deposited on rotating substrates exhibited better performance compared to those on immobile substrates.
SURFACES AND INTERFACES
(2021)
Article
Materials Science, Ceramics
E. Canas, E. Rosado, C. Alcazar, M. J. Orts, R. Moreno, E. Sanchez
Summary: By using thermal spraying from concentrated aqueous suspensions, the possibility of obtaining coatings with significant amounts of preserved zircon has been evaluated successfully. The microstructural features of the coatings and the quantification of zircon content have been characterized.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
Yongchao Fang, Xiufang Cui, Chao Yan, Zhuo Chen, Yongzhi Jing, Xin Wen, Guo Jin, Haoliang Tian
Summary: By studying the thermal cycling behaviors of LBT-YSZ and YSZ coatings at 1000 degrees Celsius, it was found that the thermal cycling lifetime of the LBT-YSZ coating was 27% higher than that of the YSZ coating. The LBT-YSZ coating exhibited different thermal cycling behaviors, with deflection and formation of slope cracks during quenching. Additionally, the lower fracture toughness of the LBT layer protected the central coating.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Lirong Luo, Zhonghua Zou, Xiao Shan, Huangyue Cai, Lixia Yang, Hongyun Jin, Xiaofeng Zhao
Summary: This study prepared segmentation cracks in air plasma-sprayed TBCs by controlling residual stress and investigated the relationship between the formation of segmentation cracks and stress in the coating. It was found that segmentation cracks could be formed when critical coating thickness and tensile stress in the as-deposited coating are achieved, and they can be manipulated by controlling temperatures.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
V Carnicer, E. Canas, M. J. Orts, E. Sanchez
Summary: This study aims to develop zirconia ceramic coatings with silica aerogel particles for outstanding insulating properties, demonstrating the feasibility of dispersing aerogel in aqueous medium and producing stable suspensions. Suitable spray-dried powders were obtained in all cases, and coatings showed improved thermal conductivity with the addition of aerogel particles.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Ji Bo Huang, Wei Ze Wang, Yuan Jun Li, Huan Jie Fang, Dong Dong Ye, Xian Cheng Zhang, Shan Tung Tu
Summary: This study has shown that the novel-structured thermal barrier coatings (TBCs) exhibit superior performance compared to conventional and nanostructured TBCs in terms of thermal insulation ability, sintering resistance, durability, and thermal shock lifetime. The thermal conductivity of the novel-structured TBCs is significantly lower than that of the other two types, even after thermal treatment. The macroscopic elastic modulus of the novel-structured TBCs is comparable to the conventional and nanostructured TBCs after sintering, and their thermal shock lifetime is much longer.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Coatings & Films
Jibo Huang, Xin Chu, Tin Yang, Huanjie Fang, Dongdong Ye, Weize Wang, Xiaofeng Zhang, Wen Sun, Renzhong Huang, Chang-Jiu Li
Summary: In this study, porous coatings with different flattened particles and pore structures were designed through an improved powder feeding process. The anti-sintering performance of the coatings can be improved by adjusting the pore structure.
SURFACE & COATINGS TECHNOLOGY
(2022)
Review
Materials Science, Multidisciplinary
Nafisah Mohd Rafiq, Shijie Wang
Summary: This paper discusses the design issue of thermal barrier coating (TBC) systems in improving coating lifespan. It highlights the ability of TBC to repair cracks and increase coating thickness for extended lifespan during high thermal exposure. By comparing atmospheric plasma spray and water-stabilized plasma spray techniques in terms of their mechanical and thermal performance, the paper emphasizes the superiority of WSP coating and the need to optimize deposition parameters for future fatigue-resistant TBC production.
Article
Materials Science, Multidisciplinary
Jibo Huang, Wen Sun, Renzhong Huang, Wenhua Ma
Summary: This study investigated the cracking behavior of plasma-sprayed thermal barrier coatings (TBCs) during service using a thermal shock test. It was found that the particle size of the agglomerated sintered yttria-stabilized zirconia (YSZ) powders had an impact on the cracking behavior of the TBCs during thermal shock. The fine YSZ coating had higher fracture toughness but lower strain tolerance, leading to faster crack propagation and coalescence. The coarse YSZ coating had larger porosity and pore size, reducing thermal stress and increasing strain tolerance, resulting in longer coating life.
Article
Materials Science, Multidisciplinary
Zhongyu Zhu, Chaohui Wang, You Wang, Xiaodong Zhang, Wei Lin, Meiling Dong, Yuan You, Weidong Cheng, Jiaqi Liu, Yuhang Wang
Summary: This study fabricated nanostructured 8YSZ thermal barrier coatings using nano-8YSZ suspension and suspension plasma spraying technique. The coatings were analyzed and tested using scanning electron microscope (SEM), and porosity was measured in cross-sectional SEM micrographs. The deposition status of 8YSZ coatings was investigated by analyzing SEM micrographs of single scanning coatings using different process parameters.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Materials Science, Coatings & Films
Georg Mauer, Robert Vassen
Summary: Besides material selection, another approach to improve the thermal cyclic performance and reduce the thermal conductivity of ceramic thermal barrier coatings is to create microstructures with high porosity. This can be achieved by adjusting plasma spraying process parameters and powder feedstock to create partial melting of the powder particles and form desired porosity. However, this often results in lower deposition efficiency.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
S-H Liu, J. P. Trelles, A. B. Murphy, W-T He, J. Shi, S. Li, C-J Li, C-X Li, H-B Guo
Summary: This paper reviews the current state of technology in thermal barrier ceramic coatings obtained using PS-PVD, and investigates the multiphase flow characteristics during low-pressure plasma spraying using computational fluid dynamics modelling and experiment. The study demonstrates the flash vaporization and atomization of ceramic droplets induced by plasma jet shock waves, which have significant effects on the formation and control of ceramic coatings.
MATERIALS TODAY PHYSICS
(2021)
Article
Materials Science, Ceramics
Yingsang Wu, Yao Wang, Edward J. Gildersleeve, Pei-Feng Hsu, Sanjay Sampath, Mary Helen McCay
Summary: This study examines the microstructural and thermal conductivity changes of different thermal barrier coatings (TBCs) under cyclic thermal excursions. The results show that porous TBCs exhibit a steady increase in thermal conductivity, while vertically cracked TBCs and multi-material TBCs experience an initial increase followed by a monotonic decrease in thermal conductivity. Microstructural studies confirmed the differences in coating evolution.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Ashish Ganvir, Mohit Gupta, Nitish Kumar, Nicolaie Markocsan
Summary: This study investigated the influence of suspension characteristics on the performance of suspension plasma sprayed thermal barrier coatings (TBCs), revealing that TBCs produced using different suspensions showed varied performance. TBCs produced using ethanol suspension exhibited the best TS lifetime, while TBCs produced using water suspension with solid load content showed the lowest lifetime. Additionally, TBCs produced using ethanol suspension showed slightly better thermal cyclic fatigue lifetime compared to TBCs produced using water and ethanol-water mixed suspensions.
CERAMICS INTERNATIONAL
(2021)
Article
Environmental Sciences
Chiara Lucarelli, Daniela Ferro, Fiammetta Susanna, Tilde de Caro
Summary: The study explores the development of ancient metallurgical activities in the Middle Atlas region, understanding the evolution of technological knowledge in archaeometallurgical work through the analysis of mining areas. Modern protocols for archaeometallurgical investigation were used, correlating chemical-physical analysis of pyrometallurgical materials and systematic geoarchaeological excavations, and integrating results into a Geographic Information System (GIS) to support future multidisciplinary research.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Applied
Elvira Maria Bauer, Tilde De Caro, Pietro Tagliatesta, Marilena Carbone
Article
Materials Science, Multidisciplinary
Roberta G. Toro, Pietro Calandra, Fulvio Federici, Tilde de Caro, Alessio Mezzi, Barbara Cortese, Anna Lucia Pellegrino, Graziella Malandrino, Daniela Caschera
JOURNAL OF MATERIALS SCIENCE
(2020)
Article
Chemistry, Physical
Roberta Grazia Toro, Mohamed Diab, Tilde de Caro, Mona Al-Shemy, Abeer Adel, Daniela Caschera
Article
Materials Science, Paper & Wood
Daniela Caschera, Roberta Grazia Toro, Fulvio Federici, Roberta Montanari, Tilde de Caro, Mona T. Al-Shemy, Abeer M. Adel
Article
Chemistry, Physical
Marco Girolami, Alessandro Bellucci, Matteo Mastellone, Stefano Orlando, Valerio Serpente, Veronica Valentini, Riccardo Polini, Elisa Sani, Tilde De Caro, Daniele M. Trucchi
Article
Chemistry, Physical
Elisabetta Di Francia, Ruth Lahoz, Delphine Neff, Tilde de Caro, Emma Angelini, Sabrina Grassini
Summary: This study assessed the surface effects of possible laser-cleaning on different archaeological bronzes corrosion products structures by comparing chemical-physical characterisations of laser-cleaned and non-cleaned types. The results demonstrated the efficiency and low-invasiveness of the laser-cleaning treatment.
APPLIED SURFACE SCIENCE
(2022)
Article
Biochemistry & Molecular Biology
Abeer M. Adel, Mona T. Al-Shemy, Mohamed A. Diab, Mohamed El-Sakhawy, Roberta G. Toro, Roberta Montanari, Tilde de Caro, Daniela Caschera
Summary: The study focuses on the application of oxidized nanocellulose and silver nanoparticles for paper functionalization and enhancement, utilizing sodium alginate to improve the binding of ONC-AgNPs on paper fibers, resulting in improved mechanical, thermal, barrier, and antibacterial properties.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Chemistry, Physical
Roberta Grazia Toro, Abeer Mohamed Adel, Tilde de Caro, Fulvio Federici, Luciana Cerri, Eleonora Bolli, Alessio Mezzi, Marianna Barbalinardo, Denis Gentili, Massimiliano Cavallini, Mona Tawfik Al-Shemy, Roberta Montanari, Daniela Caschera
Summary: The study demonstrates the excellent long-lasting antibacterial behavior of silver nanocomposites supported on oxidized nanocellulose, while also showing significant cytotoxicity in mouse embryonic fibroblasts.
Article
Chemistry, Applied
Andrea Macchia, Irene Angela Colasanti, Laura Rivaroli, Gabriele Favero, Tilde de Caro, Leonardo Pantoja Munoz, Luigi Campanella, Mauro Francesco La Russa
Summary: Copper alloys objects can deteriorate through irreversible corrosion, making it important to find suitable cleaning and conservation processes that prevent further degradation without altering their appearance. This study explored the use of ecologically friendly chelating agents as alternatives to traditional cleaning procedures for copper artifacts. The effectiveness of six natural-based chelators was tested on both corrosion compounds and corroded copper sheets. Among the amino acids tested, alanine showed the most effective cleaning results, preserving the noble patina and recovering copper effectively.
NATURAL PRODUCT RESEARCH
(2023)
Article
Multidisciplinary Sciences
Martina Bernabale, Flavio Cognigni, Lorenzo Nigro, Marco Rossi, Tilde de Caro, Caterina De Vito
Summary: Combining different analytical methods is the best strategy for analyzing corrosion in iron artefacts. Traditional techniques identify the chemistry and mineralogy of corrosion products, but further steps are necessary to understand the three-dimensional corrosion evolution. Multiscale X-ray Microscopy (XRM) enables visualization of the entire object and provides spatial distribution of corrosion phases.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Physical
Roberta G. Toro, Abeer M. Adel, Tilde de Caro, Bruno Brunetti, Mona T. Al-Shemy, Daniela Caschera
Summary: This study proposes an environmentally friendly method to synthesize nanocellulose-TiO2 (NC-TiO2) nanocomposites using agricultural waste. The resulting nanocomposites exhibit excellent photocatalytic activity and antibacterial effects. They also demonstrate good stability and degradation efficiency towards target pollutants, as well as effective inhibition against various types of bacteria and fungi.
Article
Chemistry, Physical
Elvira Maria Bauer, Gabriele Bogliardi, Cosimo Ricci, Daniele Cecchetti, Tilde De Caro, Simona Sennato, Alessandro Nucara, Marilena Carbone
Summary: Extrinsic chemiluminescence is an efficient tool for determining pesticides and fungicides without intrinsic fluorescent signal. In this study, APTMS@ZnO was synthesized and tested as an extrinsic probe for the fungicide penconazole. Different synthetic routes were explored to ensure a green synthesis pathway and a good signal variation for penconazole concentration. The synthesized samples were characterized using various techniques. The chemiluminescence tests showed a good linear response and a low detection limit for penconazole.
Article
Humanities, Multidisciplinary
Andrea Macchia, Stefania Montorsi, Giorgia Salatino, Romana Albini, Eugenio Cerilli, Chiara Biribicchi, Massimo Faella, Angela Rogliani, Tilde de Caro, Carmine Lubritto, Carmela Vetromile, Maria Rosa Di Cicco, Andrea Ambrosini, Alessandra Sperduti
Summary: The present study discusses the conservation and preservation method for a human cranium named Skull with Ears, located in the crypt of Santa Luciella ai Librai's church in Naples, Italy. These remains were worshipped by devotees and required a multidisciplinary approach to define their anthropological features and conservation state. Various techniques such as multispectral imaging, 3D modeling, X-ray imaging, microscopy, and microbiological tests were used to document and assess the cranium's condition. Electron scanning microscopy, energy dispersive spectroscopy, Fourier-transform infrared spectroscopy, and radiocarbon dating provided essential data on the cranium's history and composition. The results revealed severe degradation due to bacterial attack caused by inadequate environmental conditions. This information helped determine the most suitable conservation strategy for the cranium.
Article
Multidisciplinary Sciences
Pietro Calandra, Marzia Cioni, Valeria La Parola, Tilde de Caro
ATTI ACCADEMIA PELORITANA DEI PERICOLANTI-CLASSE DI SCIENZE FISICHE MATEMATICHE E NATURALI
(2019)
Article
Materials Science, Multidisciplinary
Y. Liu, K. Zweiacker, C. Liu, J. T. McKeown, J. M. K. Wiezorek
Summary: The evolution of rapid solidification microstructure and solidification interface velocity of hypereutectic Al-20at.%Cu alloy after laser melting has been studied experimentally. It was found that the formation of microstructure was dominated by eutectic, alpha-cell, and banded morphology grains, and the growth modes changed with increasing interface velocity.
Article
Materials Science, Multidisciplinary
Bharat Gwalani, Julian Escobar, Miao Song, Jonova Thomas, Joshua Silverstein, Andrew Chihpin Chuang, Dileep Singh, Michael P. Brady, Yukinori Yamamoto, Thomas R. Watkins, Arun Devaraj
Summary: Castable alumina forming austenitic alloys exhibit superior creep life and oxidation resistance at high temperatures. This study reveals the mechanism behind the enhanced creep performance of these alloys by suppressing primary carbide formation and offers a promising alloy design strategy for high-temperature applications.
Article
Materials Science, Multidisciplinary
Jian Song, Qi Zhang, Songsong Yao, Kunming Yang, Houyu Ma, Jiamiao Ni, Boan Zhong, Yue Liu, Jian Wang, Tongxiang Fan
Summary: Recent studies have shown that achieving an atomically flat surface for metals can greatly improve their oxidation resistance and enhance their electronic-optical applications. Researchers have explored the use of graphene as a covering layer to achieve atomically flat surfaces. They found that high-temperature deposited graphene on copper surfaces formed mono-atomic steps, while annealed copper and transferred graphene on copper interfaces formed multi-atomic steps.
Article
Materials Science, Multidisciplinary
Jennifer A. Glerum, Jon-Erik Mogonye, David C. Dunand
Summary: Elemental powders of Al, Ti, Sc, and Zr are blended and processed via laser powder-bed fusion to create binary and ternary alloys. The microstructural analysis and mechanical testing show that the addition of Ti results in the formation of primary precipitates, while the addition of Sc and Zr leads to the formation of fine grain bands. The Al-0.25Ti-0.25Zr alloy exhibits comparable strain rates to Al-0.5Zr at low stresses, but significantly higher strain rates at higher stresses during compressive creep testing. Finite element modeling suggests that the connectivity of coarse and fine grain regions is a critical factor affecting the creep resistance of the alloys.
Article
Materials Science, Multidisciplinary
P. Jannotti, B. C. Hornbuckle, J. T. Lloyd, N. Lorenzo, M. Aniska, T. L. Luckenbaugh, A. J. Roberts, A. Giri, K. A. Darling
Summary: This work characterizes the thermo-mechanical behavior of bulk nanocrystalline Cu-Ta alloys under extreme conditions. The experiments reveal that the alloys exhibit unique mechanical properties, behaving differently from conventional nanocrystalline Cu. They do not undergo grain coarsening during extrusion and exhibit behavior similar to coarse-grained Cu.
Article
Materials Science, Multidisciplinary
Yiqing Wei, Jingwei Li, Daliang Zhang, Bin Zhang, Zizhen Zhou, Guang Han, Guoyu Wang, Carmelo Prestipino, Pierric Lemoine, Emmanuel Guilmeau, Xu Lu, Xiaoyuan Zhou
Summary: This study proposes a new strategy to modify microstructure by phase regulation, which can simultaneously enhance carrier mobility and reduce lattice thermal conductivity. The addition of Cu in layered SnSe2 induces a phase transition that leads to increased grain size and reduced stacking fault density, resulting in improved carrier mobility and lower lattice thermal conductivity.
Article
Materials Science, Multidisciplinary
Jia Chen, Zhengyu Zhang, Eitan Hershkovitz, Jonathan Poplawsky, Raja Shekar Bhupal Dandu, Chang-Yu Hung, Wenbo Wang, Yi Yao, Lin Li, Hongliang Xin, Honggyu Kim, Wenjun Cai
Summary: In this study, the structural origin of the pH-dependent repassivation mechanisms in multi-principal element alloys (MPEA) was investigated using surface characterization and computational simulations. It was found that selective oxidation in acidic to neutral solutions leads to enhanced nickel enrichment on the surface, resulting in reduced repassivation capability and corrosion resistance.
Article
Materials Science, Multidisciplinary
X. Y. Xu, C. P. Huang, H. Y. Wang, Y. Z. Li, M. X. Huang
Summary: The limited slip systems of magnesium (Mg) and its alloys hinder their wide applications. By conducting tensile straining experiments, researchers discovered a rate-dependent transition in the dislocation mechanisms of Mg alloys. At high strain rates, glissile dislocations dominate, while easy-glide dislocations dominate at low strain rates. Abundant glissile dislocations do not necessarily improve ductility.
Article
Materials Science, Multidisciplinary
M. S. Szczerba, M. J. Szczerba
Summary: Inverse temperature dependences of the detwinning stress were observed in face-centered cubic deformation twins in Cu-8at.%Al alloy. The detwinning stress increased with temperature when the pi detwinning mode was involved, but decreased when the pi/3 mode was involved. The dual effect of temperature on the detwinning stress was due to the reduction of internal stresses pre-existing within the deformation twins. The complete reduction of internal stresses at about 530 degrees C led to the equivalence of the critical stresses of different detwinning modes and a decrease in the yield stress anisotropy of the twin/matrix structure.
Article
Materials Science, Multidisciplinary
Taowen Dong, Tingting Qin, Wei Zhang, Yaowen Zhang, Zhuoran Feng, Yuxiang Gao, Zhongyu Pan, Zixiang Xia, Yan Wang, Chunming Yang, Peng Wang, Weitao Zheng
Summary: The interaction between the electrode and the electric double layer (EDL) significantly influences the energy storage mechanism. By studying the popular alpha-Fe2O3 electrode and the EDL interaction, we find that the energy storage mechanism of the electrode can be controlled by modulating the EDL.
Article
Materials Science, Multidisciplinary
Matthew R. Barnett, Jun Wang, Sitarama R. Kada, Alban de Vaucorbeil, Andrew Stevenson, Marc Fivel, Peter A. Lynch
Summary: The elastic-plastic transition in magnesium alloy Mg-4.5Zn exhibits bursts of deformation, which are characterized by sudden changes in grain orientation. These bursts occur in a coordinated manner among nearby grains, with the highest burst rate observed at the onset of full plasticity. The most significant burst events are associated with twinning, supported by the observation of twinned structures using electron microscopy. The bursts are often preceded and followed by a stasis in peak movement, indicating a certain "birth size" for twins upon formation and subsequent growth at a later stage.
Article
Materials Science, Multidisciplinary
Vaidehi Menon, Sambit Das, Vikram Gavini, Liang Qi
Summary: Understanding solute segregation thermodynamics is crucial for investigating grain boundary properties. The spectral approach and thermodynamic integration methods can be used to predict solute segregation behavior at grain boundaries and compare with experimental observations, thus aiding in alloy design and performance control.
Article
Materials Science, Multidisciplinary
Feiyu Qin, Lei Hu, Yingcai Zhu, Yuki Sakai, Shogo Kawaguchi, Akihiko Machida, Tetsu Watanuki, Yue-Wen Fang, Jun Sun, Xiangdong Ding, Masaki Azuma
Summary: This study reports on the negative and zero thermal expansion properties of Cd2Re2O7 and Cd1.95Ni0.05Re2O7 materials, along with their ultra-low thermal conductivity. Through investigations of their structures and phonon calculations, the synergistic effect of local structure distortion and soft phonons is revealed as the key to achieving these distinctive properties.
Article
Materials Science, Multidisciplinary
Thomas Beerli, Christian C. Roth, Dirk Mohr
Summary: A novel testing system for miniature specimens is designed to characterize the plastic response of materials for which conventional full-size specimens cannot be extracted. The system has an automated operation process, which reduces the damage to specimens caused by manual handling and improves the stability of the test results. The experiments show that the miniature specimens extracted from stainless steel and aluminum have high reproducibility, and the results are consistent with those of conventional-sized specimens. A correction procedure is provided to consider the influence of surface roughness and heat-affected zone caused by wire EDM.
Article
Materials Science, Multidisciplinary
Rani Mary Joy, Paulius Pobedinskas, Nina Baule, Shengyuan Bai, Daen Jannis, Nicolas Gauquelin, Marie-Amandine Pinault-Thaury, Francois Jomard, Kamatchi Jothiramalingam Sankaran, Rozita Rouzbahani, Fernando Lloret, Derese Desta, Jan D'Haen, Johan Verbeeck, Michael Frank Becker, Ken Haenen
Summary: This study investigates the influence of film microstructure and composition on the Young's modulus and residual stress in nanocrystalline diamond thin films. The results provide insights into the mechanical properties and intrinsic stress sources of these films, and demonstrate the potential for producing high-quality nanocrystalline diamond films under certain conditions.
