Article
Chemistry, Physical
Maria del Rosario Silva Campos, Carsten Blawert, Nico Scharnagl, Michael Stoermer, Mikhail L. Zheludkevich
Summary: In this study, a screening of Al-X alloys was conducted to find environmentally friendly alternatives to replace Cd for corrosion protection of steel. Promising Al-based sacrificial alloys were identified and suitable heat treatments were implemented to improve their corrosion properties. Extensive evaluation in NaCl solution identified the most promising alloys for efficient cathodic protection of steel, avoiding Al passivation.
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
Rene Boettcher, Adriana Ispas, Andreas Bund
Summary: Aluminum needs to be alloyed to achieve effective cathodic corrosion protection under mild atmospheric conditions due to the formation of an insulating oxide layer. Aluminum alloys with Cr, Zn, and Sn have been studied and their corrosion behavior and protection capabilities investigated. Pure aluminum provides excellent corrosion protection in chloride-containing environments, but not under ambient conditions. Alloys with zinc provide superior corrosion protection compared to aluminum, while alloys with tin show high activity and rapid dissolution. Alloying aluminum is necessary to achieve effective cathodic corrosion protection under mild atmospheric conditions.
Review
Chemistry, Physical
Vera A. Solovyeva, Khaled H. Almuhammadi, Wael O. Badeghaish
Summary: In the oil and gas industry, the presence of aggressive fluids and gases can lead to serious corrosion issues. Various solutions have been introduced to minimize corrosion probability, such as cathodic protection, advanced metallic grades, corrosion inhibitors, composite solutions, and protective coatings. This paper reviews the advancements in corrosion protection design, highlights industry challenges, summarizes existing protective systems, discusses qualification of corrosion protection performance based on international standards, and explores future challenges and trends in corrosion mitigation.
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
Materials Science, Multidisciplinary
Molin Su, Siyu Yang, Lianyong Xu, Lei Zhao, Yongdian Han
Summary: This study systematically investigated the corrosion failure behavior of EH36 joints in different environments. The results showed that the seawater environment had a minor effect on the tensile performance but played a critical role in the fatigue behavior. Furthermore, it was found that corrosion pits and cyclic stress significantly decreased the fatigue strength of the joints.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Nisheeth Kr. Prasad, A. S. Pathak, S. Kundu, K. Mondal
Summary: A series of novel hybrid anodes composed of high phosphorus pig iron and zinc show improved anodic performance in seawater, exhibiting effectiveness as sacrificial anodes with a more negative potential compared to mild steel. These hybrid anodes demonstrate comparable capacity and efficiency to commercial zinc anodes, attributed to the localized segregation of zinc and large cathode-to-anode area-ratio in their microstructure.
Article
Chemistry, Physical
Miaomiao Cui, Yawei Feng, Hao Wu, Yuankai Jin, Wanbo Li, Zuankai Wang
Summary: Engineering materials in marine surroundings are subject to corrosion. Utilizing the corrosive marine conditions to harvest kinetic ocean wave energy is a promising solution. Leveraging water-solid triboelectrification for active anticorrosion by collecting low-frequency wave energy is efficient.
Article
Construction & Building Technology
Jiyue Hu, Siyu Wang, Yiyan Lu, Shan Li
Summary: This study analyzed the efficiency and mechanism of impressed current cathodic protection for corroded steel reinforcements in concrete using electrochemical noise. The results showed that a current density of 30 mA/m2 led to alleviated corrosion, while 90 mA/m2 may result in overprotection and hydrogen corrosion.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Wulong Zhang, Raoul Francois, Ruiyan Wang, Yuxin Cai, Linwen Yu
Summary: This study discusses the corrosion behavior of stirrups in concrete beams exposed to a chloride environment under sustained loading for 9 years. The experimental results show that the horizontal legs of stirrups primarily corroded at certain locations, while the corrosion of vertical legs was slight and the correlation between the corrosion of stirrups and main reinforcing steels was difficult to establish.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
