Article
Materials Science, Multidisciplinary
A. S. Gnedenkov, S. Lamaka, S. L. Sinebryukhov, D. Mashtalyar, V. S. Egorkin, I. M. Imshinetskiy, M. L. Zheludkevich, S. Gnedenkov
Summary: The composite calcium-phosphate coating on MA8 Mg alloy, modified with superdispersed polytetrafluoroethylene using electrophoretic deposition, decreases electrochemical activity of the sample in minimum essential medium and ensures the material biocompatibility.
Article
Materials Science, Multidisciplinary
Florina Branzoi, Adriana Baran, Simona Petrescu
Summary: In this study, a new composite polymer coating N-methylpyrrole-Triton-X100/N, N,N-diethylaniline (NMPY-TRX100/NNDEA) was synthesized on carbon steel type OL 37 electrode for corrosion protection using an electrodeposition method. The surfactant Triton-X100 played a significant role in improving the corrosion protection performance of the composite by impeding the penetration of corrosive ions. The PNMPY-TRX100/PNNDEA coatings exhibited good anticorrosion protection of OL 37 in corrosive solutions, with corrosion rates around nine times lower than uncoated electrodes and a corrosion protection yield of over 90%.
Article
Materials Science, Multidisciplinary
A. Trentin, S. Harb, M. C. Uvida, K. Marcoen, S. H. Pulcinelli, C. Santilli, H. Terryn, T. Hauffman, P. Hammer
Summary: The Ce(IV) additives create a dense hybrid network in the PMMA-silica coating, extending the service time of AA7075 aluminum alloy and providing self-healing ability, making it suitable for chromium-free protection technologies.
Article
Materials Science, Multidisciplinary
Florina Branzoi, Marius Alexandru Mihai, Simona Petrescu
Summary: A novel composite polymer coating was prepared on carbon steel using electrochemical techniques, which improved corrosion protection by obstructing the penetration of sulfate ions, achieving high protection efficiency and reduced corrosion rate.
Article
Materials Science, Multidisciplinary
Florina Branzoi, Simona Petrescu
Summary: Potentiostatic and galvanostatic deposition processes have been used to obtain a new composite polymer coating, PNMPY-1SSD/P2MT, for corrosion protection of brass electrodes. The addition of sodium 1-dodecanesulfonate as a dopant ion during electropolymerization significantly improves the anti-corrosion properties of the composite coating. The corrosion resistance of PNMPY-1SSD/P2MT coated brass is 9 times higher than that of uncoated brass.
Article
Materials Science, Multidisciplinary
Saumyadeep Jana, Matt Olszta, Danny Edwards, Mark Engelhard, Avik Samanta, Hongtao Ding, Pratik Murkute, O. Burkan Isgor, Aashish Rohatgi
Summary: Laser surface processing improved the corrosion resistance of AZ31 alloy by forming a mixed metal oxide surface film and refining the size and number density of intermetallic particles.
Article
Materials Science, Multidisciplinary
Yu Gao, Danqing Feng, Masoumeh Moradi, Chuntian Yang, Yuting Jin, Dan Liu, Dake Xu, Xiaobo Chen, Fuhui Wang
Summary: Three representative Vibrio species exhibit profound inhibitory effect on the corrosion of AA5083 by forming mature biofilms that act as a diffusion barrier to prevent the penetration of corrosive chloride and consume oxygen, thus increasing the passive range and inhibiting localized attack on the surfaces of AA5083.
Article
Materials Science, Multidisciplinary
Anawati Anawati, Efrina Hidayati, Hasna Labibah
Summary: The study proposes a combination of short processing time and high current density to enhance the current efficiency of the plasma electrolytic oxidation (PEO) process. The resulting magnesium phosphate coatings demonstrated significantly improved hardness and corrosion resistance. The PEO process efficiency was relatively high, with the highest efficiency achieved at 800 A.m(-2).
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Mohabbat Amirnejad, Mohammad Rajabi, Roohollah Jamaati
Summary: In this study, different textures of Ti6Al4V alloy with the same microstructure were developed through heat treatment in the alpha + beta phase region. The corrosion rate of the basal texture was found to be 6 times lower than that of the near prismatic texture, with the formation of a thick crack-free passive layer on the corroded surface. These findings provide important insights into the corrosion performance of the alloy.
Article
Materials Science, Multidisciplinary
A. H. Noorbakhsh Nezhad, E. Mohammadi Zahrani, A. M. Alfantazi
Summary: This study provides a detailed insight into the correlation between superhydrophobicity, erosion-corrosion resistance, and reinforcing phase amounts of Ni-Al2O3 nanocomposite coatings electrodeposited on Cu for the first time. The results show that there is no synergy between superhydrophobicity and erosion corrosion resistance, and the nanocomposite coating with 2.9wt% Al2O3 exhibits the best erosion-corrosion resistance.
Article
Crystallography
Ana-Maria Roman, Ionelia Voiculescu, Ramona Cimpoesu, Bogdan Istrate, Romeu Chelariu, Nicanor Cimpoesu, Georgeta Zegan, Catalin Panaghie, Nicoleta Monica Lohan, Mihai Axinte, Alice Mirela Murariu
Summary: Researchers have focused on the medical applications of degradable iron-based biomaterials due to their unique properties acquired through alloying with various elements and different technological methods. Iron-based alloys are particularly designed for low production costs, non-magnetism through alloying with Mn, and shape memory effect through alloying with Si, making them promising alternatives to nitinol in medical applications. This paper investigates the FeMnSi-Al alloy as a biodegradable material and examines its phases using X-ray diffraction, shape memory effect using differential scanning calorimetry, and corrosion rate through in vitro tests and electrochemical techniques.
Article
Materials Science, Multidisciplinary
Jing Wang, Ning Wang, Mengnan Liu, Chengyue Ge, Baorong Hou, Guichang Liu, Wen Sun, Yiteng Hu, Yanli Ning
Summary: The addition of hexagonal boron nitride fillers into poly(vinyl butyral) coatings improves the corrosion protection performance of copper due to non-covalent interactions between the fillers and PVB molecules. The BN-reinforced PVB coating shows significantly higher corrosion resistance compared to pristine PVB coating, providing a long-term protective barrier for the copper substrate. Increasing the loading of h-BN fillers in PVB enhances the corrosion protection performance without accelerating copper corrosion when the coating is damaged.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Qian Liu, Zhenyu Wang, En-Hou Han, Shuai Wang, Junwei Chang
Summary: In sulfuric acid solution, the combination of cyanate ester and graphene oxide can significantly enhance the anti-corrosion performance of epoxy coatings, reduce the electrolyte diffusion rate, and improve polymer stability.
Article
Chemistry, Analytical
Tiancai Cheng, Hualiang Huang, Gangliang Huang
Summary: The galvanic corrosion behavior between ADC12 aluminum alloy and copper in 3.5 wt% NaCl solution was investigated. The results showed that the galvanic effect reduced the formation of pitting on the surface of aluminum alloy, but promoted the formation of pitting on the surface of copper.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Cecilia Monticelli, Federica Zanotto, Andrea Balbo, Vincenzo Grassi, Alberto Fabrizi, Giulio Timelli
Summary: This research examined the corrosion behavior and susceptibility to stress corrosion cracking (SCC) of a high-pressure die-cast secondary AlSi9Cu3(Fe) alloy in 3.5% NaCl solution. Various testing methods revealed the presence of critical surface segregation zones, where strong corrosion attack occurred due to composition differences and peculiar morphology of noble Al2Cu phases. No SCC susceptibility was detected, but localized corrosion attack and hydrogen gas bubbling were observed at the interphases of noble phase/alpha-Al matrix.
Correction
Materials Science, Multidisciplinary
Lenia M. Calado, Maria J. Carmezim, M. Fatima Montemor
FRONTIERS IN MATERIALS
(2022)
Article
Energy & Fuels
Kush K. Upadhyay, N. Bundaleska, M. Abrashev, J. Kissovski, N. Bundaleski, O. M. N. D. Teodoro, Andre Mao de Ferro, Rui Pedro Silva, A. Dias, E. Felizardo, E. Tatarova, M. F. Montemor
Summary: Free-standing graphene synthesized using atmospheric pressure microwave plasma showed good supercapacitive properties and was used as an electrode. Electrodes made by mixing graphene with activated carbon demonstrated improved specific capacitance and rate capability compared to commercial activated carbon electrodes.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Construction & Building Technology
B. Sena da Fonseca, A. P. Ferreira Pinto, A. Rodrigues, S. Picarra, C. Santos, M. F. Montemor
Summary: The study found that the improvement of stone cohesion by partially condensed alkoxysilane-based consolidants is primarily affected by the catalytic route and pore size distribution of the stone, with the mineralogical composition of the substrates playing a secondary role.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Yegor Morozov, Simone Pellegrini, M. F. Montemor
Summary: This study investigates the corrosion behavior of plain carbon steel in the liquid phase of CSA-based materials at different stages of binder hydration. The findings suggest that sulfate-induced corrosion of reinforcement starts at early stages of hydration, and continues despite favorable conditions in the hydrated state.
Article
Materials Science, Multidisciplinary
Osama Fayyaz, Moinuddin M. Yusuf, Sara Bagherifard, M. F. Montemor, R. A. Shakoor
Summary: Nickel-based coatings suffer from inferior mechanical properties, but this study successfully synthesized Ni-P-B4C nanocomposite coatings with improved properties. By adding boron carbide nanoparticles, the structural, morphological, mechanical, and electrochemical properties of the coatings were significantly enhanced. The nanocomposite coatings also exhibited excellent corrosion resistance and superior mechanical properties, making them attractive for various industries.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Physical
Neelakandan M. Santhosh, Kush K. Upadhyay, Gregor Filipic, Janez Zavasnik, Maria de Fatima Montemor, Uros Cvelbar
Summary: Portable electronic devices require high-performance miniaturised electronic components, preferably produced at low cost. Currently, aluminium electrolytic capacitors (AECs) are commonly used, but they are bulky and have narrow electrochemical performance. In this study, an alternative compact capacitor design using vertically aligned carbon nanostructures as the electrode was fabricated and showed high capacity and low resistance, suggesting its suitability for high-frequency filtering applications.
Article
Metallurgy & Metallurgical Engineering
Min Deng, Linqian Wang, Darya Snihirova, Jan Bohlen, Gerrit Kurz, Sviatlana V. Lamaka, Daniel Hoeche, Mikhail L. Zheludkevich
Summary: Thermomechanical processing can enhance the corrosion performance of lean Mg-Ca alloys, but annealing can accelerate the corrosion rate due to Fe precipitation. Micro-alloying with indium can effectively restrain the formation of Fe-containing precipitates. This finding provides a foundation for developing Mg-Ca-based alloys with high corrosion resistance, superior electrochemical performance, and excellent mechanical properties.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Construction & Building Technology
B. Sena da Fonseca, A. P. Ferreira Pinto, M. Rucha, M. M. Alves, M. F. Montemor
Summary: Consolidation improves the cohesion of stones and preserves stone-built heritage. However, it also modifies other characteristics that affect stone vulnerability to salt crystallization, especially in porous limestones. This study evaluates the compatibility of alkoxysilanes and phosphate-based treatments with a historic porous limestone in both short-term and medium/long-term perspectives. The findings reveal the potential risks of salt entrapment and development of subflorescences when using consolidants, highlighting the importance of addressing consolidation of damaged stones with proper compatibility.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Electrochemistry
A. C. Alves, Jorge P. Correia, Teresa M. Silva, M. F. Montemor
Summary: The birnessite structure of MnO2 makes it a promising electrode material for energy storage devices, especially supercapacitors, due to its high theoretical capacitance and pseudocapacitive response. The effect of alkali cations on the structure of birnessite has been discussed, but their role in the charge storage mechanism is still controversial. This study reveals new aspects of the pseudocapacitive charge storage mechanism of birnessite and discusses the contribution of non-faradaic and faradaic reactions based on EIS analysis. It demonstrates the role of alkali ions intercalation in the interlayer structure of birnessite.
ELECTROCHIMICA ACTA
(2023)
Article
Polymer Science
Tiago A. R. Silva, Ana C. Marques, Rui G. dos Santos, Rana A. Shakoor, Maryna Taryba, Maria Fatima Montemor
Summary: Bio-based polyols were obtained from the thermochemical liquefaction of pinewood and Stipa tenacissima, and successfully used as a green raw material to produce bio-based polyurethane coatings. The coatings exhibited moderate thermal stability, mild hydrophobicity, and good corrosion protection properties. These BioPU coatings have great potential for various applications and further modification with bio-based fillers and corrosion inhibitors.
Article
Electrochemistry
Rodrigo Braga, Diana M. Fernandes, Alberto Adan-Mas, Teresa M. Silva, M. F. Montemor
Summary: The introduction of pillared agents or dopants to graphene in supercapacitor electrodes can improve ion transfer and electrochemical performance. This study evaluates the effect of different nitrogen (N) and sulfur (S) precursors on doped graphene flakes (GF). Co-doping with 4-amino-3-hydrazino-5-mercapto-1,2,4-triazole results in a specific capacitance of 48 F.g(-1) and over 90% capacitance retention after 10,000 cycles.
Article
Electrochemistry
R. S. Sampaio, T. M. Silva, M. F. Montemor
Summary: This work investigates the growth of manganese oxide on stainless steel for pseudocapacitor electrodes using a one-step potentiostatic method. The microstructure of the electrode material and its capacitive response were analyzed through in situ ellipsometry and electrochemical impedance spectroscopy. The results reveal the formation of three layers during the potentiostatic synthesis of manganese oxide on stainless steel: thickening of the native oxide layer on the substrate, and the growth of two distinct layers of manganese oxide. The inner layer is slightly more compact and resistive, while the outer layer is more porous.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Tim Wuerger, Linqian Wang, Darya Snihirova, Min Deng, Sviatlana Lamaka, David A. Winkler, Daniel Hoche, Mikhail L. Zheludkevich, Robert H. Meissner, Christian Feiler
Summary: This study evaluates the robustness and predictive performance of two QSPR models and proposes a multi-objective optimization method to accelerate the discovery of advanced battery systems.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Biotechnology & Applied Microbiology
Victor Martin, Monica Garcia, Maria de Fatima Montemor, Joao Carlos Salvador Fernandes, Pedro Sousa Gomes, Maria Helena Fernandes
Summary: This study aimed to investigate the cellular and molecular mechanisms occurring during the bone healing process with the implantation of a degradable Mg-based alloy. The findings suggest that the coated alloy did not have detrimental effects on cellular behavior, while the anodized and original alloys with higher degradation rates induced the expression of certain genes involved in endothelial and bone cell differentiation. These results imply that the tailored degradable Mg-based material could promote early stages of bone repair and enhance bone healing by increasing bone metabolism dynamics.
BIOENGINEERING-BASEL
(2022)
Article
Chemistry, Physical
Marta M. Alves, Catarina Santos, M. F. Montemor
Summary: In this study, biodegradable polymeric coatings based on polycaprolactone (PCL) were prepared with embedded TiO2 nanoparticles (NPs) to increase protectiveness and biocompatibility. The superior protectiveness of the PCL-TiO2 coating was proven through electrochemical impedance technique (EIS) evaluation. The composition of the corrosion layer was analyzed, with the PCL-TiO2 coated sample showing additional precipitation of apatites. This research provides important insights on Mg-2Ca alloys and the role of bioactive coatings on their degradation.
APPLIED SURFACE SCIENCE ADVANCES
(2022)
Article
Materials Science, Multidisciplinary
Zhichao Shang, Xiaoping Cai, Farshid Pahlevani, Yan Zheng, Akbar Hojjati-Najafabadi, Xinran Gao, Baojing Zhang, Peizhong Feng
Summary: High porosity Co-Al-Fe intermetallics with 3D-microstructures were successfully synthesized in one step via a thermal explosion reaction. The link between pore structure and permeability was investigated using 3D-XRM technology. The corrosion resistance of the samples with different Fe contents was studied at 900 degrees C under an oxygen/sulphur atmosphere for up to 120 h. The results showed that the samples maintained stable pore structure and intact internal matrices, attributed to the formation of a thin protective layer on the surface. In addition, inward diffusion of S resulted in the formation of FeS nodules.
Article
Materials Science, Multidisciplinary
Lian Ma, Hain Yang, Daquan Zhang, Wei Wu
Summary: In this study, an environmentally friendly volatile corrosion inhibitor, lysine salts (LA), was prepared between graphene oxide (GO) layers using an in situ intercalation technique. The corrosion inhibition effect of LA was evaluated, and it was found that LA-GO2 achieved a 99.3% corrosion inhibition efficiency after composition optimization. The inhibition of the electrochemical anodic process on the surface of mild steel was the main reason for the high corrosion inhibition efficiency of LA-GO2. The properties of the surface film on the corroded steel were also characterized in detail to understand the corrosion inhibition mechanism of LA-GO2.
Article
Materials Science, Multidisciplinary
Running Wang, Jiaping Zhang, Bing Liu, Jie Fei, Qiangang Fu
Summary: By introducing a tailored SiC-C interphase, the carbon fiber can be effectively protected, improving the mechanical and ablation properties of leading edge shaped C/C-ZrC-SiC composites.
Article
Materials Science, Multidisciplinary
Zihua Wang, Chijia Wang, Ruitao Wang, Jiapeng Deng, Kun Zhang, Yanji Zhu, Huaiyuan Wang
Summary: A robust anti-corrosive coating has been developed using functional fly ash, which demonstrates excellent corrosion resistance and improved mechanical properties. The coating achieves these enhancements through molecular cross-linking design and surface augmentation techniques, resulting in a significantly improved impedance modulus compared to pure polyurea coatings.
Article
Materials Science, Multidisciplinary
Haofei Sun, Meifeng Li, Hao Zhang, Jing Liu
Summary: The oxidation behavior of FeCrNi medium entropy alloy was investigated through experimental observations and density functional theory (DFT) calculations. The study found that at 900 degrees C, the alloy forms a desirable and continuous oxide layer, while at 1000 degrees C, the oxide layer becomes discontinuous with penetration of oxide. These observations highlight the significant role of phase structure in promoting the formation of protective oxide scales and influencing oxidation resistance.
Article
Materials Science, Multidisciplinary
Yang Li, Ke Ma, Jingjun Xu, Jingjing Li, Yueming Li, Yi Zhang, Jun Zuo, Meishuan Li
Summary: Cr2AlC diffusion barrier effectively blocks the diffusion of Ti, enhancing the stability and spalling resistance of the Al2O3 scales between NiCrAlY coating and TiAl alloy.
Article
Materials Science, Multidisciplinary
Weiyi Wang, Qinglin Pan, Xiangdong Wang, Bing Liu
Summary: By adding Ce, Sc, Y and Zr elements to Al-Mg-Si alloy, the microstructure of the alloy can be regulated, and the corrosion and heat resistance of the materials can be improved.
Article
Materials Science, Multidisciplinary
Andrea Cristoforetti, Javier Izquierdo, Ricardo M. Souto, Flavio Deflorian, Michele Fedel, Stefano Rossi
Summary: This study presents a new approach to studying the mechanism of filiform corrosion in organic coated steel using the scanning vibrating electrode technique (SVET) and micropotentiometry (potentiometric SECM). The electrochemical activity under the coating was evaluated by mapping the ionic current densities coming from artificial defects made in specific locations of the filament. Antimony tips were also used to investigate the pH changes associated with different corrosion reactions at the metal-paint interface. Local pH levels along the filament in the anodic and cathodic regions were determined.
Article
Materials Science, Multidisciplinary
Yang Gao, Dayun Sun, Zhu Liu, Shuo Cong, Rui Tang, Yanping Huang, Lefu Zhang, Xianglong Guo
Summary: The corrosion characteristics of a novel alumina-forming austenitic steel in high-pressure high-temperature water environment were studied. The addition of aluminum has a negative effect on the continuity of the alumina scale.
Article
Materials Science, Multidisciplinary
Negin Madelat, Benny Wouters, Peter Visser, Zahra Jiryaeisharahi, Kristof Marcoen, Shoshan T. Abrahami, Annick Hubin, Herman Terryn, Tom Hauffman
Summary: This work explores the correlation between electrolyte transport properties and the variation of pigment volume concentration (PVC) in organic coatings. An odd random phase electrochemical impedance spectroscopy (ORP-EIS) approach is used to analyze the diffusion of ions independent from water uptake. The results show that a higher PVC leads to a more homogeneous coating structure, resulting in faster diffusion of ions and enhanced water uptake.
Article
Materials Science, Multidisciplinary
Eloa Lopes Maia, Serguei Gavrilov, Valentyn Tsisar, Kitty Baert, Iris De Graeve
Summary: The effect of pre-oxidation in air at 300-500°C on the initiation and development of liquid metal corrosion attack on 316L austenitic steel in static lead-bismuth eutectic (LBE) has been investigated. It was found that pre-formed oxide films can protect the surface against dissolution, while high temperature pre-oxidation leads to localized corrosion.
Article
Materials Science, Multidisciplinary
Baozhuang Sun, Qiuyu Wang, Yue Pan, Zhiyong Liu, Cuiwei Du, Xiaogang Li
Summary: In this study, a non-steady electrochemical model was established to investigate stress corrosion cracking (SCC). The model was verified using 304 SS with various microstructures, confirming its effectiveness in assessing SCC susceptibility.
Article
Materials Science, Multidisciplinary
Xingyu Xiao, Xinhua Liu, Zhilei Wang, Xuexu Xu, Mingying Chen, Jianxin Xie
Summary: The corrosion behavior and mechanisms of Cu-10Ni-X (Al, Fe, Mn, Cr, Sn, Ti, Zn) alloys in a 3.5% NaCl solution were systematically investigated. Both computational and experimental results revealed that except Ti, other elements could enhance the corrosion resistance of Cu2O passivation film.
Article
Materials Science, Multidisciplinary
Gen Zhang, Yan-Ping Huang, E. Jiang, Wei -Wei Liu, Hong Yang, Jing Xiong, Yong-Fu Zhao
Summary: The addition of aluminum has a significant influence on the intermetallic compounds in AFA alloys, particularly increasing the content of B2-NiAl phase. In the SCO2 environment, the oxide scales formed on AFA alloys with aluminum were thinner than on ASS without aluminum, and the structure of the oxide scales changed to a double-layer structure.
Article
Materials Science, Multidisciplinary
Yuxuan He, Guozheng Xiao, Chao Wang, Xuefeng Lu, Liuyuan Li, Shiying Liu, Yusheng Wu, Zhanjie Wang
Summary: The relationship between configurational entropy and lattice distortion in novel rare earth monosilicates was investigated, and the effect of configurational entropy on their properties was studied. The results showed that lattice distortion increased with the increase of configurational entropy, but a highly symmetrical crystal structure was formed when the configurational entropy was large enough, inhibiting the lattice distortion.
