Article
Chemistry, Applied
Chunping Qi, Kim Dam-Johansen, Claus Erik Weinell, Huichao Bi, Hao Wu
Summary: The study showed that the partial replacement of spherical zinc particles with stainless steel flakes (SSF) improved the corrosion protection performance of zinc-rich epoxy (ZRE) coating. This enhancement was attributed to the synergistic effects of increasing coating impedance and extending cathodic protection duration.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Materials Science, Multidisciplinary
Chengbao Liu, Li Cheng, Lan-Yue Cui, Peimin Hou, Bei Qian, Rong-Chang Zeng
Summary: This article validates a robust strategy based on damage-induced fluorescence enhancement effect to visualize dynamic damage-healing processes in anticorrosion coatings on magnesium alloy AZ31. Through embedding fluorescent poly-dopamine nanoparticles into thermo-responsive epoxy resin, immediate fluorescence was intensified at coating damages. The prepared coating possessed pronounced healing and corrosion protection capability with near-infrared irradiation, and the healing behavior can be traced and visualized based on the decrease in fluorescence intensity. This work opens a new avenue to monitor the failure and self-healing mechanism of anticorrosion coatings, providing guideline for engineering of next-generation smart protection materials.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
N. Banjo, T. T. Sasaki, K. Hono
Summary: In this study, the conditions for achieving impact adhesion and salt spray corrosion resistance equivalent to chromate conversion coatings on extruded A6063 alloy were investigated. The microstructure of titanium-based conversion coatings was also observed. By densely dispersing titanium-oxide particles of 20-50 nm thick on the aluminum matrix, the same performance as chromate conversion coatings was achieved.
APPLIED SURFACE SCIENCE
(2022)
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
Chemistry, Applied
Yuqin Tian, Weishan Wang, Li Zhong, Xiang Jiang, Xinya Zhang
Summary: The study demonstrates that incorporating modified GO with TPOAC into WEP coatings can significantly enhance the corrosion resistance of coatings on aluminum alloy substrates, reduce internal defects, and show better corrosion impedance under experimental conditions.
PROGRESS IN ORGANIC COATINGS
(2022)
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
Sh Shirazeh Mohabbat, A. A. Sarabi, H. Eivaz Mohammadloo
Summary: In this study, the AZ31 Mg alloy was coated with a one-step zirconium-based conversion coating (ZrCC) by adding adipic acid (AA) and manganese (Mn) as additives. The morphology and composition of the samples were analyzed, and the electrochemical behavior of the coatings was evaluated. The Zr-Mn sample showed the highest polarization resistance and the lowest current density, indicating superior corrosion resistance.
MATERIALS TODAY COMMUNICATIONS
(2023)
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.
Article
Chemistry, Physical
Alexey Y. Zhizhchenko, Anastasiia V. Shabalina, Ali A. Aljulaih, Stanislav O. Gurbatov, Aleksandr A. Kuchmizhak, Satoru Iwamori, Sergei A. Kulinich
Summary: This study investigated the long-term stability of organosilane layers formed on polished aluminum alloy in contact with water. The results showed that the prepared organosilane layer gradually hydrolyzed over time, allowing water to interact with the underlying layer and causing a decrease in hydrophobicity. Additionally, local electrochemical corrosion was observed in the one-layer samples after immersion in water.
Article
Chemistry, Multidisciplinary
Chunping Qi, Claus Erik Weinell, Kim Dam-Johansen, Hao Wu
Summary: The effect of adding 0.5 wt % zinc fibers on the anticorrosion performance of zinc-rich epoxy (ZRE) coatings with different zinc dust contents was investigated. The results showed that ZRE coatings with 85 wt % zinc dust exhibited superior cathodic protection, while coatings with 65 wt % zinc dust showed no cathodic or barrier protection. The addition of zinc fibers did not significantly improve the corrosion resistance of both coatings. However, the ZRE coating with 75 wt % zinc dust showed improved anticorrosion performance with the addition of zinc fibers, providing short-term cathodic protection followed by barrier protection.
Article
Chemistry, Applied
Xinru Ge, Weijie Fan, Hao Tang, Jie Yang, Rui Ding, Xiaodong Zhao
Summary: The anticorrosion performance of an eco-friendly coating system for marine aluminum alloy was studied. The epoxy tie primer showed strong adhesion force and excellent corrosion resistance. The corrosion protection effect was enhanced when used in conjunction with a polyurethane topcoat. The hydrolysis of aluminum tripolyphosphates (ATP) into complex ions and their reaction with metal ions on the aluminum alloy surface were main factors contributing to the excellent anticorrosion performance.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Metallurgy & Metallurgical Engineering
Swapnil H. Adsul, Uday D. Bagale, Shirish H. Sonawane, R. Subasri
Summary: Halloysite nanotubes were used as nanocontainers to hold corrosion inhibitors, and acid assisted etching was carried out to increase the loading of the inhibitors. The release kinetics and mechanisms of the corrosion inhibitors were investigated, with Ce3+-Zr4+ loaded coatings showing more effective corrosion protection compared to other inhibitors. The study demonstrates the potential of utilizing halloysite nanotubes for improving corrosion resistance in metal coatings.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Metallurgy & Metallurgical Engineering
K. S. Duran, N. Hernandez, L. M. Rueda, C. A. Hernandez-Barrios, A. E. Coy, F. Viejo
Summary: This study developed multilayer barrier-bioactive coatings to enhance the corrosion resistance of magnesium alloy and promote the growth of apatite-like phases. However, an increase in salt content led to the formation of porous coatings, affecting the corrosion resistance of magnesium alloy.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
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
Energy & Fuels
Luis Gonzalez-Fernandez, Angel Serrano, Elena Palomo, Yaroslav Grosu
Summary: In this study, a polymeric anticorrosion coating based on nanoparticles was evaluated for carbon steel and stainless steel in solar salt environment at temperatures of 390℃ and 565℃, respectively. The coated samples showed a more homogeneous corrosion layer and reduced corrosion compared to uncoated samples. The inclusion of alumina nanoparticles into the corrosion scale and their reaction with stainless steel to form mixed oxides were confirmed by SEM-EDX and XRD analysis. ICP analysis was used to examine the molten salts. These findings suggest the potential of using nanoparticle-based anticorrosion coatings for high-temperature molten salt applications.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Engineering, Multidisciplinary
Marianna Rinaldi, Tommaso Ghidini, Federico Cecchini, Ana Brandao, Francesca Nanni
COMPOSITES PART B-ENGINEERING
(2018)
Article
Engineering, Mechanical
Emilie Beevers, Ana D. Brandao, Johannes Gumpinger, Michael Gschweitl, Christoph Seyfert, Peter Hofbauer, Thomas Rohr, Tommaso Ghidini
INTERNATIONAL JOURNAL OF FATIGUE
(2018)
Editorial Material
Chemistry, Physical
Tommaso Ghidini
Article
Materials Science, Multidisciplinary
Martina Meisnar, Joe M. Bennett, Dick Andrews, Steve Dodds, Richard Freeman, Renato Bellarosa, David Adams, Andrew Francis Norman, Thomas Rohr, Tommaso Ghidini
MATERIALS CHARACTERIZATION
(2019)
Article
Chemistry, Physical
C. Sofia Proenca, A. Marisa Pereira, A. M. Cabral, L. Pigliaru, T. Rohr, M. Eduarda M. Araujo, Jorge Correia
SURFACE AND INTERFACE ANALYSIS
(2019)
Article
Automation & Control Systems
Juliane Moritz, Andre Seidel, Michael Kopper, Joerg Bretschneider, Johannes Gumpinger, Thomas Finaske, Mirko Riede, Michael Schneeweiss, Elena Lopez, Frank Brueckner, Christoph Leyens, Thomas Rohr, Tommaso Ghidini
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2020)
Article
Materials Science, Multidisciplinary
N. Kolsch, A. Seidel, T. Finaske, F. Brueckner, J. Gumpinger, M. Bavdaz, T. Rohr, T. Ghidini, C. Leyens
JOURNAL OF LASER APPLICATIONS
(2020)
Article
Polymer Science
Marianna Rinaldi, Federico Cecchini, Lucia Pigliaru, Tommaso Ghidini, Francesco Lumaca, Francesca Nanni
Summary: Recent advancements in additive layer manufacturing have led to new designs of geometrically complex structures with lighter materials and reduced processing costs, particularly in spacecraft production. The use of polymeric ALM structures offers lightweight options with good thermomechanical properties, while fused-deposition modeling (FDM) allows for easy production of nanosats and other structures in space. The material choice is crucial for the final performance of the printed parts, with polyether ether ketone (PEEK) showing potential for structural space applications.
Article
Engineering, Aerospace
C. Sofia Proenca, A. Marisa Pereira, L. Pigliaru, T. Rohr, J. Correia, A. M. Cabral
Summary: Intensive studies have been conducted to find viable alternatives to chromium (VI) containing conversion coatings for protecting aluminium alloys from corrosion in the aerospace industry. This study evaluates the anticorrosion performance of a commercially available conversion coating, PreCoat A32, based on trivalent chromium. The results show that the conversion coatings formed on aluminium alloys exhibit good corrosion protection, making it a promising alternative to chromium (VI) based chemical conversion coatings.
CEAS SPACE JOURNAL
(2023)
Article
Engineering, Biomedical
Nieves Cubo-Mateo, Sandra Podhajsky, Daniela Knickmann, Klaus Slenzka, Tommaso Ghidini, Michael Gelinsky
Proceedings Paper
Construction & Building Technology
Juergen Baer, Alexander Metzger, Nico Pouvesle, Bernhard Strauss, Nathan Bamsey, Thomas Rohr
3RD INTERNATIONAL CONFERENCE ON STRUCTURAL INTEGRITY (ICSI 2019)
(2019)
Proceedings Paper
Engineering, Mechanical
M. Sprengel, A. Baca, J. Gumpinger, T. Connolley, A. Brandao, T. Rohr, T. Ghidini
MECHANICAL FATIGUE OF METALS: EXPERIMENTAL AND SIMULATION PERSPECTIVES
(2019)