Article
Multidisciplinary Sciences
Hugo Hartl, Joseph Davies, Geoffrey Will, Kostya Ostrikov, Jennifer MacLeod
Summary: This study presents a new method for directly fabricating a superhydrophobic surface coating on mild steel. Dielectric barrier discharge (DBD) plasma was used to convert a liquid small-molecule precursor to a solid film through plasma-assisted on-surface polymerization. The properties of the coating were analyzed using various techniques, including microscopy, spectroscopy, and contact angle measurement. The results showed that the wettability of the films could be controlled by adjusting the plasma parameters and incorporating graphene nanoplatelets in the precursor. High-dose plasma exposures of the nanoplatelet-containing precursor resulted in the formation of superhydrophobic films with water contact angles above 150 degrees. However, the superhydrophobic coating provided limited corrosion protection according to potentiodynamic polarisation tests.
SCIENTIFIC REPORTS
(2023)
Article
Materials Science, Multidisciplinary
Jordan Whiteside, Arnoud C. A. de Vooys, Elizabeth Sackett, Hamilton N. McMurray
Summary: Chromium-based coatings on steel were studied for their corrosion resistance after application of strain, showing that Cr(VI) coatings were fully resistant to cathodic disbondment post deformation, while Cr(III) coatings exhibited increased rates of cathodic disbondment with increasing strain. The kinetics of cathodic disbondment were explained by coating morphology produced by deformation and the exposure of underlying iron.
Article
Chemistry, Physical
Zhong Zheng, Chaofan Wang, Gang Huang, Wenju Feng, Dun Liu
Summary: The research analyzed the effects of different defocused laser paint removal distances on the substrate and paint film, finding that in an inert atmosphere, a defocused laser with a distance of +4mm showed the best removal effect with minimal impact on the substrate. Focused laser paint removal in ambient air caused serious damage to the substrate. The mechanism of laser paint removal was found to be a combination of laser plasma effect, laser gasification effect, and thermal stress effect.
Article
Chemistry, Multidisciplinary
Wei Yan, Haoqing Jiang, Wendi Yi, Chengbin Zhao, Yucong Xia, Hengjiang Cong, Lin Tang, Gary J. Cheng, Jianhua He, Hexiang Deng
Summary: This study reports the synthesis of multivariate MOFs with different metal ions, which can be converted into alloy nanoparticles using a laser. The FeNi alloy nanoparticles show improved performance in the oxygen evolution reaction.
MATERIALS CHEMISTRY FRONTIERS
(2022)
Article
Multidisciplinary Sciences
Weiren Cheng, Huabin Zhang, Deyan Luan, Xiong Wen (David) Lou
Summary: We have developed a promising electrocatalyst composed of Fe(OH)(x)@Cu-MOF nanoboxes, which exhibit superior activity and stability for the electrocatalytic hydrogen evolution reaction.
Article
Materials Science, Multidisciplinary
Jun Liang, Siqin Liu, Zhenjun Peng, Runxia Li, Biao Wang
Summary: This study investigates the effects of plasma electrolytic oxidation (PEO) coating with and without a polyurethane (PU) top layer on the corrosion and galvanic corrosion behavior of AZ31 Mg alloy. The results show that the PEO-PU coating greatly improves the stability of the AZ31 Mg alloy to galvanic corrosion and provides much better long-term corrosion protection performance.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Applied
Dajiang Zheng, Qi Gui, Yuqing Xu, Guang-Ling Song
Summary: The study demonstrated that the modified alternate anodic and cathodic AC-DC-AC method is more reliable in evaluating the protection performance of an acrylic varnish paint coating, by rationalizing the acceleration of coating degradation without altering the mechanism of corrosion damage. The corrosion damage and mechanism of the acrylic varnish paint coating/Q215 steel system were discussed in detail based on the results obtained from the modified AC-DC-AC tests.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Chemistry, Physical
Jieting Ding, Danyu Guo, Anqian Hu, Xianfeng Yang, Kui Shen, Liyu Chen, Yingwei Li
Summary: Spatial isolation and dopant anchoring strategy is employed to resist metal aggregation in the pyrolysis of metal-organic frameworks (MOFs), resulting in the synthesis of uniform dispersion and high-loading Co NPs. The obtained Co/BNC exhibits excellent electrocatalytic activities in both hydrogen evolution and hydrazine oxidation reactions, indicating potential applications in electrochemical energy conversion.
Article
Polymer Science
Adel Jalaie, Abdolah Afshaar, Seyed Borhan Mousavi, Mohammad Heidari
Summary: This study comprehensively evaluates the release rate of biocides, antifouling corrosion effects, and physical properties of different types of paints. The results show that acrylic-based paints have a higher biocide release rate due to faster hydrolysis, while resin-based paints with smaller biocide particle sizes have higher release rates. The optimal total biocide contents for acrylic-based, epoxy-based, and vinyl-based paints are determined to be 30%, 60%, and 50% respectively.
Article
Energy & Fuels
Huatian Zhai, Desong Fan, Qiang Li
Summary: Passive radiative cooling is an innovative method that uses reflection and emission to dissipate heat to outer space. Researchers have developed scalable colored coatings that combine color and efficient radiative cooling by sacrificing a portion of visible light reflection. These coatings have high reflectance and emittance, allowing for sub-ambient temperature drop and net cooling power under solar irradiance. With its low cost and simple preparation process, this method demonstrates the potential for large-scale practical applications.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Materials Science, Coatings & Films
Wufang Yang, Weibin Feng, Zutai Liao, Yanping Yang, Guolong Miao, Bo Yu, Xiaowei Pei
Summary: A novel siloxane corrosion inhibitor precursor was successfully prepared and used to prepare molecular engineered nanofiller (NPInh) for epoxy composites, improving the dispersion and corrosion resistance of the coatings significantly.
SURFACE & COATINGS TECHNOLOGY
(2021)
Review
Chemistry, Multidisciplinary
Hao Wang, Biao-Hua Chen, Di-Jia Liu
Summary: The article discusses a new approach to improve oxygen electrocatalysis efficiency through rational design of metal-organic frameworks (MOFs) and metal-organic gels (MOGs). While MOFs/MOGs show potential in synthesizing oxygen electrocatalysts, they still face some challenges and future research directions.
ADVANCED MATERIALS
(2021)
Review
Chemistry, Physical
Saad Al-Saadi, R. K. Singh Raman
Summary: Mild steel is widely used in various industries and constructions, but it is susceptible to corrosion in aggressive environments. Silane pre-treatments have emerged as effective solutions for improving corrosion resistance. This review discusses the mechanistic features and factors influencing the performance of silane coatings on mild steel, as well as their application in mitigating microbiologically influenced corrosion.
Article
Construction & Building Technology
Akshay Singh Tomar, Rainy Gupta, Abhijit Bijanu, Deepika Tanwar, Archana Singh, Shabi Thankaraj Salammal, Chetna Dhand, Deepti Mishra
Summary: Nowadays, cementitious geopolymer coatings are being extensively studied as a corrosion protection system for low-carbon steel/structural steel. These coatings have the potential to replace traditional organic coatings due to their green and sustainable properties. In this study, titanium oxide-containing geopolymer coatings were developed and characterized for mild steel corrosion protection and antibacterial efficiency. The coatings exhibited excellent corrosion resistance and adhesion strength, with the highest performance observed in the formulation containing 10% TiO2. Furthermore, the coatings showed good antibacterial reduction, particularly in the formulation with 15% TiO2. The study also conducted accelerated weathering tests to confirm the durability and stability of the coatings. Overall, this research developed an environmentally-friendly and economically-viable cementitious coating material for the prevention of early oxidation and bacterial fouling in mild steel structures.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Polymer Science
Muhammad Kamran, Anwar ul Haq Ali Shah, Gul Rahman, Salma Bilal, Philipp Roese
Summary: In this study, environmentally friendly PDG-g-PANI/Al2O3 composites were prepared and used as corrosion inhibitors for mild steel and stainless steel. The results showed that the composite had high inhibition efficiency on both metals in NaCl solution, especially when used in combination with epoxy resin.
Article
Chemistry, Applied
Huichao Bi, John Sykes
PROGRESS IN ORGANIC COATINGS
(2015)
Article
Materials Science, Multidisciplinary
H. Bi, G. T. Burstein, B. B. Rodriguez, G. Kawaley
Article
Electrochemistry
G. T. Burstein, H. Bi, G. Kawaley
ELECTROCHIMICA ACTA
(2016)
Article
Chemistry, Applied
Huichao Bi, John Sykes
PROGRESS IN ORGANIC COATINGS
(2016)
Article
Chemistry, Applied
Ziyou Li, Giulia Ravenni, Huichao Bi, Claus Erik Weinell, Burak Ulusoy, Yanqiang Zhang, Kim Dam-Johansen
Summary: The study demonstrated that biochar nanoparticles can be utilized to enhance the anticorrosive performance of zinc-rich epoxy coatings, with the example of spruce wood BCN showing even better effectiveness compared to commercial carbon black.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Chemistry, Applied
Huichao Bi, Claus Erik Weinell, Raquel Agudo de Pablo, Benjamin Santos Varela, Sergio Gonzalez Carro, Alvaro Rodriguez Ruiz, Kim Dam-Johansen
Summary: Rust creep is a crucial criterion for prequalification of anti-corrosive coating systems for offshore applications. Destructive methods provide only one reading of rust creep, while non-destructive methods offer faster and more cost-effective evaluation of coating performance.
PROGRESS IN ORGANIC COATINGS
(2021)
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
Chemistry, Applied
Zoi Lamprakou, Huichao Bi, Claus Erik Weinell, Silvia Tortajada, Kim Dam-Johansen
Summary: Encapsulation of calcium phosphate in mesoporous silica nanoparticles and its application in epoxy coatings can enhance the anti-corrosive performance of the coatings.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Chemistry, Applied
Zoi Lamprakou, Huichao Bi, Claus Erik Weinell, Kim Dam-Johansen
Summary: Calcium tannate was synthesized and dispersed into an epoxy coating, which showed higher corrosion resistance compared to reference coatings. XPS analysis confirmed the incorporation of tannate molecules in the protective film formed on the steel substrate under the calcium tannate pigmented coating.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Chemistry, Applied
Shujie Lin, Huichao Bi, Claus Erik Weinell, Kim Dam-Johansen
Summary: This study investigates how mechanical cleaning parameters affect antifouling coatings' performance and provides guidance on cleaning strategies for antifouling coatings by evaluating coating surface conditions and biocide release rates.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Chemistry, Applied
Spardha Jhamb, Huichao Bi, Claus Erik Weinell, Georgios M. Kontogeorgis, Kim Dam-Johansen
Summary: Waterborne epoxy-silicone coatings were evaluated for their stratification using FTIR-ATR and SEM techniques. The results confirmed the occurrence of stratification on polyester substrate and compared with a theoretical model. The experimental results generally supported the theoretical predictions, except for sandblasted steel, which requires further investigation.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Chemistry, Applied
Ziyou Li, Huichao Bi, Claus Erik Weinell, Giulia Ravenni, Lidia Benedini, Kim Dam-Johansen
Summary: Pyrolyzed and gasified biochar nanoparticles (BCN) were incorporated into zinc epoxy coatings to enhance their barrier protection and zinc utilization rate. The BCN-modified formulations showed improved anticorrosive performance, especially on formulations with lower zinc content. The enhanced performance was attributed to the filling of micropores and extra electrical connections provided by BCN. This study provides a sustainable solution for enhancing the anticorrosive performance of zinc epoxy coatings.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Chemistry, Multidisciplinary
Zoi Lamprakou, Huichao Bi, Claus Erik Weinell, Kim Dam-Johansen
Summary: A comparative study was conducted on the leaching behavior of inhibitive ions from conventionally pigmented and smart epoxy coatings with encapsulated pigments. The encapsulation of pigments resulted in a more uniform and stable coating microstructure, as observed through Scanning Electron analysis, and a higher leaching rate of the inhibitive pigment, as measured by Inductively Coupled Plasma Optical Emission Spectroscopy (ICPOES) analysis. This enhancement in corrosion protection and barrier properties was further confirmed by Electrochemical Impedance Spectroscopy (EIS) measurements. The smart epoxy coating with mesoporous silica nanoparticle encapsulated calcium phosphate (MSN-CP3%) exhibited a significantly higher coating resistance compared to conventional epoxy coatings pigmented with 3 wt % and 5 wt % calcium phosphate (CP3% and CP5%) after 7 days of immersion in 3.5 wt % NaCl solution.
Article
Polymer Science
Shu Li, Huichao Bi, Claus Erik Weinell, Kim Dam-Johansen
Summary: This study investigated the water uptake behavior of a commercial epoxy coating on steel panels and free films through non-destructive techniques. The results revealed the absorption and leaching processes of water in the coating film and provided insights into the water uptake mechanisms.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Chemistry, Applied
Shujie Lin, Huichao Bi, Claus Erik Weinell, Seyednezamaddin Azizaddini, Kim Dam-Johansen
Summary: Underwater cleaning is becoming increasingly important in biofouling prevention. This study introduces a laboratory scale self-designed automated underwater cleaning system (AUCS) that can achieve force monitoring during the cleaning process. The effects of brush type and cleaning frequency were investigated on different coatings, showing varying fouling resistance and cleaning efficiency. The results from field testing also revealed the superior performance of certain brush types in terms of fouling resistance and cleaning efficiency.
PROGRESS IN ORGANIC COATINGS
(2023)
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.
