Article
Polymer Science
Valentina Donadei, Heli Koivuluoto, Essi Sarlin, Petri Vuoristo
Summary: Icephobic coatings have great significance in various industries facing icing problems. However, their durability in real applications is currently limited. Therefore, it is necessary to understand the degradation of coatings under different environmental stresses for further coating development. In this study, lubricated icephobic coatings were fabricated using a flame spray method with hybrid feedstock injection. The performance of the coatings was characterized and investigated under various environmental stresses, including repeated icing/deicing cycles, immersion in corrosive media, and exposure to UV irradiation. The results showed that the coatings exhibited medium-low ice adhesion and slightly more stable icephobic behavior for cottonseed oil-based coatings. Surface roughness slightly increased and wetting performances decreased after cyclic tests, but no chemical changes were observed. The coatings also demonstrated good chemical resistance in selected corrosive media, with better performance for paraffin-based coatings. However, a slight decrease in hydrophobicity was detected due to surface structural changes. The paraffin-based coatings showed better resistance under UV irradiation based on carbonyl index and color change measurements.
Article
Chemistry, Applied
Valentina Donadei, Heli Koivuluoto, Essi Sarlin, Henna Niemela-Anttonen, Tommi Varis, Petri Vuoristo
Summary: This study investigates the performance and durability of lubricated polymer coatings under cyclic icing/deicing tests. The results showed stable icephobic behavior for some coatings, while others experienced a decrease in performance over the cycles. Cyclic testing caused mechanical damage to the surfaces, resulting in increased surface roughness and reduced hydrophobicity.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Chemistry, Applied
Mohammadreza Shamshiri, Reza Jafari, Gelareh Momen
Summary: Icephobic coatings offer protection for infrastructures in cold environments. Aqueous self-lubricating coatings, fabricated by blending PEG-PDMS into a PDMS matrix, enhance contact area, forming hydrogen bonds and quasi-liquid-like layers to reduce ice adhesion strength and delay freezing. Optimized copolymer content of 5% produces durable icephobic coatings.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Chemistry, Multidisciplinary
Teresa Walter, Tamara Hein, Matthias Weichselgartner, Kirsten Wommer, Martin Aust, Nicolas Vogel
Summary: This paper presents a new method for preparing highly effective anti-contamination surface coatings. The method is fluorine-free and can be fabricated at ambient conditions, making it environmentally friendly. Researchers combine hydrophobic fumed silica particles with a polymeric binder through dispersion-based coating and infuse them with silicone oil to create superhydrophobic coatings.
Review
Materials Science, Coatings & Films
Mohammadreza Shamshiri, Reza Jafari, Gelareh Momen
Summary: This review discusses the development and potential applications of smart icephobic coatings, which can respond to environmental stimuli to reduce ice adhesion and delay freezing time. While these coatings show promise in various applications, further research is needed to fully explore their benefits and limitations.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Zhewen Ma, Xiaochen Liu, Xiaodong Xu, Lei Liu, Bin Yu, Cristian Maluk, Guobo Huang, Hao Wang, Pingan Song
Summary: This study presents a biomimetic strategy to design a polymeric coating with strong adhesion and flame-retardant properties, which can self-extinguish during vertical burning and release low heat and smoke, outperforming previous products.
Article
Materials Science, Coatings & Films
Joseph Ndiithi Ndumia, Min Kang, Bertrand Vigninou Gbenontin, Jinran Lin, Jitao Liu, Samuel Mbugua Nyambura
Summary: FeCrMoCBWNb coatings were fabricated on different substrates using arc-spraying process, and the thermal shock behavior was studied. The failure mechanisms of coatings were influenced by the substrates, and the mechanical properties and microstructure of coatings varied with different substrate types.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Engineering, Biomedical
W. Li, Y. Wang, X. Tang, T. T. T. Yuen, X. Han, J. Li, N. Huang, J. F. W. Chan, H. Chu, L. Wang
Summary: The use of liquid-repellent coatings is proposed to prevent the spread of COVID-19, with promising results in repelling and inactivating SARS-CoV-2 pathogens, surpassing the effectiveness of traditional disinfectants. The versatility of the coating over a wide range of substrates and pathogens, along with its capability to repel and inactivate pathogens, makes it valuable for infection control in everyday life and during pandemics.
MATERIALS TODAY BIO
(2021)
Article
Materials Science, Ceramics
Han Hu, Lin Mao, Shuo Yin, Hanlin Liao, Chao Zhang
Summary: This article reviews the progress of liquid thermal sprayed coating in wear resistance as well as friction reduction in recent years. The influences of microstructure, composition, phase structure and mechanical properties on the tribological properties of typical coatings are investigated. The article also highlights the importance of process optimization and heat treatment in improving the tribological properties of the coating.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Applied
Halar Memon, Davide S. A. De Focatiis, Kwing-So Choi, Xianghui Hou
Summary: The study developed and investigated polyurethane-based nanocomposite and fibre-reinforced coatings to understand their deteriorating behavior under erosion impact and the subsequent effect on ice adhesion. The inclusion of fillers effectively reduced ice anchoring points and retained icephobic performance by lowering surface roughness or minimizing surface deterioration, while fibres played a role in limiting crack initiation and propagation. The incorporation of fibres led to enhanced durability and retention of excellent icephobic performance, with a significant reduction in ice adhesion strength even after rigorous impinging tests.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Materials Science, Coatings & Films
Federico Veronesi, Giulio Boveri, Julio Mora, Alessandro Corozzi, Mariarosa Raimondo
Summary: The study investigates the application of ceramic coatings based on the SLIPS approach in icing wind tunnel tests, showing good ice protection performance and potential as candidate passive ice protection systems for aeronautical applications.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Emad Farahani, Andre C. Liberati, Amirhossein Mahdavi, Pantcho Stoyanov, Christian Moreau, Ali Dolatabadi
Summary: Ice formation affects industrial components' performance, and various methods have been studied to reduce ice adhesion. This study evaluates the icephobicity and mechanical durability of a novel duplex coating consisting of PTFE solid lubricant films on TiO2-coated substrates. The results show that the combination of PTFE and TiO2 coating reduces ice adhesion and maintains mechanical durability, making it a promising candidate for deicing approaches.
Article
Chemistry, Physical
Signe Kyrkjebo, Andrew Cassidy, Naureen Akhtar, Richard Balog, Martha Scheffler, Liv Hornekaer, Bodil Holst, Ranveig Flatabo
Summary: This study investigates the anti-icing properties of graphene oxide coatings, showing a lower freezing onset temperature compared to pristine graphene. Water contact angles are influenced by the substrate properties, while the freezing onset temperature is affected by the functional groups present on the graphene basal plane.
Article
Chemistry, Physical
Xabier Sandua, Pedro J. J. Rivero, Ana Conde, Joseba Esparza, Rafael Rodriguez
Summary: This study compares the photocatalytic efficiency of different deposition techniques for dispersing TiO2 nanoparticles onto a polymeric electrospun fiber matrix. The efficiency is evaluated through wettability measurements and organic dye degradation. The results show that although all three techniques induce super hydrophilic behavior, there are notable differences in the photocatalytic efficiency in degrading Rhodamine B.
Article
Materials Science, Coatings & Films
Sina Mirzai Tavana, Mehdi Hojjati, Andre C. Liberati, Christian Moreau
Summary: This paper investigates the fabrication and performance evaluation of a solid particle erosion resistant layer on polymer-based composites. Coating materials including tungsten carbide-cobalt, martensitic chromium stainless steel, and alumina-titania were deposited using air plasma spray (APS) to enhance erosion resistance. A stainless steel mesh was incorporated during composite fabrication to protect the composite fibers during grit blasting and thermal spraying, improving the adhesion between coatings and substrate. Tests were conducted to assess mechanical and tribological properties. Results showed that coating bonding strength significantly improved with identified processing parameters. Coating materials with brittle behavior exhibited higher erosion resistance on stiff substrates, while ductile coatings were more suitable for less stiff substrates like carbon fiber reinforced composites.
SURFACE & COATINGS TECHNOLOGY
(2023)
Editorial Material
Materials Science, Coatings & Films
Andre McDonald, Fardad Azarmi, Kantesh Balani, Jan Cizek, Heli Koivuluoto, Yuk-Chiu Lau, Hua Li, Filofteia-Laura Toma
JOURNAL OF THERMAL SPRAY TECHNOLOGY
(2022)
Article
Chemistry, Applied
Valentina Donadei, Heli Koivuluoto, Essi Sarlin, Henna Niemela-Anttonen, Tommi Varis, Petri Vuoristo
Summary: This study investigates the performance and durability of lubricated polymer coatings under cyclic icing/deicing tests. The results showed stable icephobic behavior for some coatings, while others experienced a decrease in performance over the cycles. Cyclic testing caused mechanical damage to the surfaces, resulting in increased surface roughness and reduced hydrophobicity.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Multidisciplinary Sciences
Davide Bottone, Valentina Donadei, Henna Niemela, Heli Koivuluoto, Stefan Seeger
Summary: Passive icephobic surfaces offer a cost-efficient solution to icing problems. Superhydrophobic coral-like Silicone Nanofilament (SNF) coatings demonstrate extremely low ice adhesion and good durability. Surface chemistry plays a significant role in maintaining superhydrophobicity under icing conditions.
SCIENTIFIC REPORTS
(2021)
Article
Polymer Science
Valentina Donadei, Heli Koivuluoto, Essi Sarlin, Petri Vuoristo
Summary: Icephobic coatings have great significance in various industries facing icing problems. However, their durability in real applications is currently limited. Therefore, it is necessary to understand the degradation of coatings under different environmental stresses for further coating development. In this study, lubricated icephobic coatings were fabricated using a flame spray method with hybrid feedstock injection. The performance of the coatings was characterized and investigated under various environmental stresses, including repeated icing/deicing cycles, immersion in corrosive media, and exposure to UV irradiation. The results showed that the coatings exhibited medium-low ice adhesion and slightly more stable icephobic behavior for cottonseed oil-based coatings. Surface roughness slightly increased and wetting performances decreased after cyclic tests, but no chemical changes were observed. The coatings also demonstrated good chemical resistance in selected corrosive media, with better performance for paraffin-based coatings. However, a slight decrease in hydrophobicity was detected due to surface structural changes. The paraffin-based coatings showed better resistance under UV irradiation based on carbonyl index and color change measurements.
Review
Materials Science, Coatings & Films
Heli Koivuluoto
Summary: Thermal spraying of polymer coatings has a long history, initially focused on corrosion and wear protection. With the development of thermal spray technologies, there is an increasing interest in producing polymer coatings using advanced spray processes, and applying them in new fields such as anti-icing and anti-fouling.
JOURNAL OF THERMAL SPRAY TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Nuria Cinca, Olivier Lavigne, Riberto Nunes Peres, Susan Conze, Soeren Hoehn, Sergi Dosta, Heli Koivuluoto, Chung Kim, Fernando Santos da Silva, Ville Matikainen, Reza Jafari, Elena Tarres, Assis Vicente Benedetti
Summary: The electrochemical corrosion performance of WC-12 wt% Co in coating and bulk forms was evaluated in a 3.56 wt% NaCl solution. It was found that the surface roughness and structural characteristics of the coatings directly affect their electrochemical corrosion performance. Different processing methods resulted in materials with varying electrochemical behaviors, with the metallic character of the coatings playing a crucial role.
Article
Green & Sustainable Science & Technology
Ruqaya Khammas, Heli Koivuluoto
Summary: Icing and ice accretion can cause severe problems in various industrial sectors. This research explores the use of surface engineering to design icephobic coatings, which act as passive anti-icing solutions. Slippery liquid-infused porous structures were fabricated using flame- and cold-spraying to produce polymer coatings impregnated with a silicone lubricant. The performance of these coatings was evaluated through ice adhesion measurements, showing promising results in reducing ice adhesion even after multiple icing-deicing cycles.
Article
Materials Science, Coatings & Films
Reza Jafari, Jarkko Kiilakoski, Mari Honkanen, Minnamari Vippola, Heli Koivuluoto
Summary: This study demonstrates the feasibility of fabricating functional aluminum/quasicrystalline (Al-QC) composite coatings by cold spray technology. By adjusting the cold spray process parameters, composite coatings with different QC-Al ratios were successfully deposited. The results show that the Al-QC composite coatings have a dense structure, well-integrated and adherent deposits, providing structural reliability and enhanced hydrophobic behavior. The study also demonstrates the feasibility of repairing eroded cold-sprayed Al6061 by depositing composite coatings.
JOURNAL OF THERMAL SPRAY TECHNOLOGY
(2023)
Correction
Materials Science, Coatings & Films
Reza Jafari, Jarkko Kiilakoski, Mari Honkanen, Minnamari Vippola, Heli Koivuluoto
JOURNAL OF THERMAL SPRAY TECHNOLOGY
(2023)
Editorial Material
Materials Science, Coatings & Films
Andre McDonald, Emine Bakan, Jan Cizek, Sarka Houdkova, Heli Koivuluoto, Yuk-Chiu Lau, Hua Li, Filofteia-Laura Toma
JOURNAL OF THERMAL SPRAY TECHNOLOGY
(2023)
Article
Engineering, Environmental
Henna Niemela, Mikko Tuominen, Heli Koivuluoto, Petri Vuoristo
Summary: Surface icing is caused by liquid water encountering the surface. Slippery liquid infused porous surfaces, SLIPS, need to maintain wetting durability, lubricant stability, and low sliding friction to function effectively in outdoor applications. Durability testing is crucial to understand the loss of functionality and to analyze the performance differences between slippery surfaces.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Coatings & Films
Rocio Cortes, Miguel Angel Garrido-Maneiro, Heli Koivuluoto, Giovanni Bolelli, Stefania Morelli, Veronica Testa, Luca Lusvarghi, Jan Kondas, Pedro Poza
Summary: This study investigates the mechanical properties and local wear behavior of high-pressure cold-sprayed Inconel 625 coatings deposited under different spraying conditions using different particle size distributions of powders. Nanoindentation tests and microscratch tests were conducted to determine the elastic modulus, hardness, and local wear rate of the coatings. The scratch micromechanisms were analyzed using scanning electron microscopy. The results were compared with coatings processed by more traditional methods.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Jarno Reuna, Raul Kanter, Niklas Kandelin, Kaisa Kiuru, Heli Koivuluoto, Mircea Guina
Summary: The functionality and durability of nanostructured alumina coatings exposed to atmospheric icing have been assessed and it was found that hydrophobic treated nanostructured alumina performs well in harsh conditions.
