Review
Biotechnology & Applied Microbiology
A. A. Thompson, J. L. Wood, E. A. Palombo, W. K. Green, S. A. Wade
Summary: This review examines the impact of cathodic protection on microbially influenced corrosion (MIC), synthesizing tests from literature to identify trends and knowledge gaps, and revealing the effectiveness of CP varies based on environmental factors.
Review
Microbiology
Dongsheng Wang, Fang Guan, Chao Feng, Krishnamurthy Mathivanan, Ruiyong Zhang, Wolfgang Sand
Summary: Microbially influenced concrete corrosion (MICC) causes significant financial losses to modern societies. This review examines the roles of various microbial communities in MICC and discusses protective measures against it. The current status and research methodology of MICC are also reviewed, aiming to provide insight into MICC mechanisms and the development of protection options.
Article
Construction & Building Technology
Arpit Goyal, Homayoon Sadeghi Pouya, Eshmaiel Ganjian
Summary: This research focused on developing a new anode material to improve the corrosion control technique for steel in reinforced concrete structures. The new concrete conductive anode paint showed excellent electrical conductivity and met the required polarization requirement. With an anode current density of 20 mA/m(2), the service life was evaluated as 45 years.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Yue Yin, Huan Zhao, Manoj Prabhakar, Michael Rohwerder
Summary: This study discovered that applying coatings containing mesoporous SiO2 on zinc surfaces can effectively inhibit corrosion-induced organic coating disbondment and even self-heal already delaminated interfaces. Mesoporous SiO2 degrades in a high alkaline environment, forming a silicate layer that prevents underfilm corrosion and re-establishes a protective and delamination resistant interface.
Review
Chemistry, Applied
Ahmed Khalid Hussain, N. Seetharamaiah, Moorthi Pichumani, Ch. Shilpa Chakra
Summary: This review article summarizes the utilization and development trends of zinc rich epoxy primer systems in the field of metal corrosion protection, discussing the impact of different types of fillers on their performance enhancement, as well as the new strategies used by researchers to improve electrical conduction, barrier effect, and corrosion resistance.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Chemistry, Applied
Weichen Bai, Yuantai Ma, Meijiang Meng, Ying Li
Summary: The study found that ZRE with a graphene content of 0.3% showed the best corrosion protection effectiveness. When the graphene content is lower than 0.3%, the coating porosity decreases, reducing the corrosion rate of zinc and extending the cathodic protection duration of the coating. However, when the graphene content is higher than 0.3%, the galvanic corrosion between graphene and zinc powders increases the corrosion rate of zinc, leading to a shortened cathodic protection duration.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Construction & Building Technology
Carmen Andrade
Summary: There is limited data regarding the corrosion rates of reinforcements in marine conditions. In this study, long-term corrosion rates were examined for both small specimens and large reinforced concrete blocks in direct contact with natural seawater. The small specimens had embedded bars at different cover depths, with corrosion rates measured periodically over a span of 10 to 23 years using the polarization resistance method. The large blocks, which had been semi-buried for approximately 25 years in a tidal area of a beach in Spain, had their corrosion rates measured only four times. Surprisingly, the bars showed no signs of corrosion despite high contamination at a cover depth of 3 cm. Additionally, the statistical distribution of corrosion rates in other marine structures is presented.
CEMENT AND CONCRETE RESEARCH
(2023)
Article
Construction & Building Technology
Xin Cheng, Mengyu Fu, Wenwen Dou, Shiqiang Chen, Guangzhou Liu
Summary: The combination of coatings and cathodic protection is a commonly used method for corrosion protection, but the protection life often falls short of the original design. This study investigated the degradation behavior of epoxy coatings in seawater with the presence of Pseudomonas aeruginosa, and found that Pseudomonas aeruginosa accelerated the degradation of coatings while cathodic protection promoted biofilm formation on the coating surface. The findings shed light on the shorter protection life of organic coatings and provide guidance for selecting suitable coatings with anti-fouling and anti-corrosion properties.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Rosa Grinon-Echaniz, Shiladitya Paul, Rob Thornton, Philippe Refait, Marc Jeannin, Alvaro Rodriguez
Summary: Thermal spray coatings are cost-effective for corrosion protection of offshore steel structures, with aluminum alloys performing better in fully immersed conditions and zinc alloys excelling in atmospheric and splash zones. There is good correlation between laboratory and real marine environment results, which are important for improving coating design to protect carbon steel in marine environments.
Article
Microbiology
Annika Fiskal, Jeremiah Shuster, Stefan Fischer, Prachi Joshi, Lipi Raghunatha Reddy, Sven-Erik Wulf, Andreas Kappler, Helmut Fischer, Ilona Herrig, Jutta Meier
Summary: This study investigated the formation of rust tubercles on sheet piles along the river Havel in Germany. The analysis revealed a multi-layered structure with various microorganisms embedded in the matrix. Gene and sequence analysis supported the presence of a diverse microbial community. Based on these findings, a comprehensive concept of tubercle formation and the involvement of microorganisms in metal corrosion in freshwater was proposed.
ENVIRONMENTAL MICROBIOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Jia-Bin Xiong, Yong-Juan Zhou, Shi-Hui Wang, Zhang-Qi Xiong, Zi-Kun Zhang, Shan-Shan Zhang, Chen-Kunlun Zhang, Chao-Fan Xu, Guo-Qun Liu
Summary: MOF materials are widely used in various fields due to their rich porous structures, stable and continuous pores, and high specific surface area. In this study, two MOFs with similar spatial structures were reported, and the modulation of end microstructures was achieved by varying the F content. The output performance of friction power generation increased with the increase in F content, and the obtained polyacidic ligand materials can be used to construct self-powered corrosion protection systems, effectively protecting metallic materials from corrosion.
Article
Construction & Building Technology
Dimitrios T. Kalovelonis, Theodoros v Gortsas, Stephanos Tsinopoulos
Summary: The electrochemical behavior of steel used for concrete reinforcement can be either active or passive. It remains passive as long as the concrete environment remains highly alkaline, but carbonation and/or chloride contamination can cause it to become active and corrode. This study proposes a boundary element method for solving 3D periodic cathodic protection problems, with a reduced computation cost through the application of acceleration techniques based on adaptive cross approximation.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Jiyue Hu, Siyu Wang, Yiyan Lu, Shan Li
Summary: The combination of strengthening and corrosion protection using multi-functional material, such as carbon fiber reinforced polymer (CFRP), has been studied in this paper. It was found that a double protection of CFRP wrapping and impressed current cathodic protection (ICCP) was more effective than epoxy coating or sole CFRP wrapping. The optimal ICCP current density depended on the degree of pre-corrosion, and CFRP wrapping provided greater improvements in charge transfer resistance compared to epoxy coating. This work provides a basis for further optimization of ICCP-strengthening technique for corroded reinforced concrete components.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Chemistry, Physical
Wenxiu Wu, Naiyuan Guo, Wei Li, Chaokun Tang, Yixuan Zhang, Hao Liu, Minfang Chen
Summary: This research presents the design and fabrication of a self-powered corrosion protection system based on an implantable rectified Argentum electrode Polydimethylsiloxane and Titanium (PDMS-Ti) film triboelectric nanogenerator (irTENG). The irTENG successfully decelerates the corrosion rate of magnesium alloy implants and exhibits excellent antibacterial capabilities. Animal experiments demonstrate the biocompatibility and feasibility of this system, highlighting a novel application of triboelectric nanogenerators in the field of biomedical research.
Article
Materials Science, Multidisciplinary
Nisheeth Kr Prasad, A. S. Pathak, S. Kundu, Pankaj Panchal, K. Mondal
Summary: The study investigated the effectiveness of high phosphorus pig iron as a sacrificial anode for cathodic protection of mild steel in concrete. Results showed that pig iron samples exhibited more active potential compared to mild steel in simulated concrete pore solution, with lower polarization resistance as phosphorus content increased.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Microbiology
Shin-ichi Hirano, Sota Ihara, Satoshi Wakai, Yuma Dotsuta, Kyohei Otani, Toru Kitagaki, Fumiyoshi Ueno, Akihiro Okamoto
Summary: This study identified a methanogenic isolate, Methanobacterium sp. TO1, capable of inducing iron corrosion by accepting electrons from Fe-0. Electrochemical analysis revealed that TO1 can uptake electrons at a lower potential compared to previously reported methanogens with extracellular electron transfer ability. This study highlights the corrosion risk posed by methanogens in anoxic freshwater environments and the importance of understanding the corrosion mechanism.
Article
Biotechnology & Applied Microbiology
Yu Fen Goh, Henriette L. L. Roder, Siew Herng Chan, Muhammad Hafiz Ismail, Jonas S. S. Madsen, Kai Wei Kelvin Lee, Soren J. Sorensen, Michael Givskov, Mette Burmolle, Scott A. A. Rice, Diane McDougald
Summary: Mixed species biofilms exhibit increased tolerance to stresses. Grazing by Tetrahymena pyriformis significantly reduced the biofilms of single species K. pneumoniae and P. protegens, but P. aeruginosa biofilms were resistant. Rhamnolipids and the quorum sensing molecule PQS contribute to the protective mechanisms.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2023)
Article
Microbiology
Lan Li Wong, Sudarsan Mugunthan, Binu Kundukad, James Chin Shing Ho, Scott A. A. Rice, Jamie Hinks, Thomas Seviour, Atul N. N. Parikh, Staffan Kjelleberg
ENVIRONMENTAL MICROBIOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
S. A. Wade, J. S. Webb, R. B. Eckert, G. E. Jenneman, S. A. Rice, T. L. Skovhus, P. Sturman, S. P. Kotu, M. Richardson, D. M. Goeres
Summary: This paper summarises a round table forum held at the 2021 International Biodeterioration and Biodegradation Symposium, discussing the potential role of standards in biofilm research and industry innovation. It reviews standards and best-practice guidance in both academic research and industry impacts. The complex nature of biofilm-associated problems and limited training for industry personnel often hinder the ability to provide best-practice solutions, therefore, more effort is needed to provide consensus on standard test methods or guidance documents for studying and combating biofilms.
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
(2023)
Article
Engineering, Environmental
Chia-Lun Ho, Mohammed Y. Emran, Souta Ihara, Wenyuan Huang, Satoshi Wakai, Wei-Peng Li, Akihiro Okamoto
Summary: Labeling electrogenic bacteria from a microbiota was achieved by polymerizing 3,3'-diaminobenzidine (DAB) monomers to form DAB polymer and depositing it on the cell surface. The labeled electrogenic bacteria were then enriched through specific conjugation with magnetic nanoparticle surfaces. This rapid enrichment strategy has the potential to improve the efficiency of microbial electrochemical technologies and facilitate the identification of electrogenic bacteria.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Electrochemistry
Xiao Deng, Akihiro Okamoto
Summary: It has been found that soluble redox mediators play a major role in cellular electron transportation in sulfate-reducing bacteria. In this study, in vivo electrochemistry experiments showed that outer-membrane cytochromes directly mediate the extracellular electron transfer in Desulfovibrio ferrophilus IS5. The findings suggest that the direct electron transfer mechanism regulates the reduction rate of insoluble substrates in sulfate-reducing bacteria.
ELECTROCHIMICA ACTA
(2023)
Article
Engineering, Environmental
Xizi Long, Yoshihide Tokunou, Akihiro Okamoto
Summary: Bacterial outer-membrane multi-heme cytochromes (OMCs) can modify heme coupling through mechanical interactions among OMCs by controlling their concentrations. The concentration of OMCs significantly impacts their circular dichroism (CD) spectra and redox property, resulting in a 4-fold change in microbial current production. Overexpression of OMCs increases the conductive current across the biofilm, indicating enhanced inter-protein electron hopping via collision on the cell surface.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Qingqing Sun, Chao Ma, Weipeng Li, Xiaomeng Li, Kenji Sakamoto, Xuying Liu, Akihiro Okamoto, Takeo Minari
Summary: This study proposes a full printing process for the fabrication of field-effect-transistor (FET) biosensors, using gold nanoparticle and carbon nanotube inks, which allows for fast and simple bacterial detection. It is suitable for medical diagnosis, public hygiene, and environmental monitoring.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Biotechnology & Applied Microbiology
M. Mozammel Hoque, Parisa Noorian, Gustavo Espinoza-Vergara, Srijon Adhikary, Joyce To, Scott A. Rice, Diane McDougald
Summary: The flagellar transcriptional regulator flrA plays a key role in flagellum synthesis initiation in Vibrio cholerae. This study demonstrates that the absence of flrA leads to increased growth and survival of V. cholerae in the amoeba host Acanthamoeba castellanii, and this is associated with upregulation of genes involved in iron acquisition and amino acid biosynthesis. The availability of iron is crucial for V. cholerae survival in amoeba, and the catalases KatB and KatG confer increased tolerance to oxidative stress. These findings highlight the importance of flrA in resistance to protozoan predation and provide insights into the molecular mechanisms underlying increased survival in the environment.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2023)
Article
Electrochemistry
Wenyuan Huang, Xizi Long, Akihiro Okamoto
Summary: The rate enhancement of extracellular electron transfer is critical for microbial fuel cells. Flavins have been found to be a promising additive to enhance current production through the formation of bound semiquinone cofactor. However, the effect of flavins decreases significantly upon dissociation from the outer membrane cytochromes.
ELECTROCHIMICA ACTA
(2023)
Article
Nanoscience & Nanotechnology
Ying-Chi Chen, Yi-Ting Li, Chin-Lai Lee, Yen-Ting Kuo, Chia-Lun Ho, Wei-Che Lin, Ming-Chien Hsu, Xizi Long, Jia-Sin Chen, Wei-Peng Li, Chia-Hao Su, Akihiro Okamoto, Chen-Sheng Yeh
Summary: Researchers have developed a membrane-integrated liposome (MIL) coated with titanium dioxide (TiO2) nanoparticles to enhance electron transfer and increase radical production, improving the efficiency of cancer treatment. They found that the MIL coating significantly increased superoxide anion production under low-dose X-ray irradiation. By mimicking extracellular electron transfer and water oxidation, the TiO2@MIL system demonstrated effective tumor treatment in vivo.
NATURE NANOTECHNOLOGY
(2023)
Article
Chemistry, Analytical
Minh Nhat Dang, Surinder Singh, John H. Navarro-Devia, Hannah J. King, Rosalie K. Hocking, Scott A. Wade, Guy Stephens, Angelo Papageorgiou, James Wang
Summary: This report highlights recent advances in surface enhancement of tungsten carbide and high-speed steel cutting tools using a novel micro-machining technique. By reducing surface roughness while maintaining hardness, this method shows potential for improving tool performance, optimizing manufacturing processes, increasing tool reliability, and minimizing waste generation.
Article
Chemistry, Multidisciplinary
Kohei Shimokawa, Shogo Matsubara, Tomoya Kawaguchi, Akihiro Okamoto, Tetsu Ichitsubo
Summary: In this study, various spinel oxide materials were investigated by modifying the composition to demonstrate their performance in photocharging. It was found that LiMn1.5Fe0.5O4 exhibited a higher discharge capacity compared to LiMn2O4 after long-term photocharging, due to its enhanced stability under illumination. This work provides fundamental design guidelines for spinel oxide cathode materials in the development of photo-rechargeable batteries.
CHEMICAL COMMUNICATIONS
(2023)
Article
Microbiology
Beng-Soon Teh, Yiik-Siang Hii, Jamie Hinks, Mohd Firdaus Abdul-Wahab, Sanjay Swarup
Summary: We report the complete genome sequence of Methylomonas sp. UP202 isolated from an urban waterway sediment in Singapore. The genome contains genes involved in methane, methanol, formaldehyde, and formate oxidation, as well as genes utilizing various nitrogen sources.
MICROBIOLOGY RESOURCE ANNOUNCEMENTS
(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.
