Article
Materials Science, Multidisciplinary
Yashwantraj Seechurn, Julian A. Wharton, Baboo Y. R. Surnam
Summary: This study observed significant geospatial variability in the corrosion of S235 structural steel exposed to the marine/urban atmosphere of Port-Louis, with different locations showing varying chloride deposition rates, SO2 levels, and corrosion rates. Electrochemical techniques, supported by mass loss and surface analysis, provided insights into environment-specific corrosion mechanisms.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Engineering, Environmental
Tim Platte, Nicolas Finck, Frank Heberling, Robert Polly, Tim Pruessmann, Kathy Dardenne, Horst Geckeis
Summary: Research shows that green rust chloride (GR-Cl) can retain iodide at low ionic strengths and pH levels between 7.5 and 8.5. The sorption of iodide by GR-Cl is influenced by ion exchange and the transformation of GR-Cl/I phases to magnetite. The presence of sulfate anions inhibits the uptake of iodide.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Multidisciplinary
Yue Li, Xin Ruan, Mitsuyoshi Akiyama, Mingyang Zhang, Jiyu Xin, Sopokhem Lim
Summary: This paper presents a mathematical model based on X-ray image recognition results for SFRC simulation, optimizing fiber distribution and geometry parameter values, demonstrating a refined sampling modeling method, and validating the model effectiveness through experimental comparison.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Chemistry, Physical
Pawel Tworzewski, Wioletta Raczkiewicz, Przemyslaw Czapik, Justyna Tworzewska
Summary: Periodic or situational diagnostic tests are crucial for existing buildings, especially historical ones. Advanced non-destructive or semi-destructive methods should be used for buildings in use. The assessment of reinforcement condition and concrete cover is particularly important in reinforced concrete structures.
Article
Engineering, Environmental
Evert J. Elzinga
Summary: The study found that Ni(II) is incorporated into the lattice of green rust sulfate through recrystallization and exchange reactions, forming secondary Ni(II)/Fe(II)-Fe(III)-LDH phases with higher stability. Further research is needed to investigate the mechanisms involved and assess the sorptive reactivity of green rust with other trace metal species.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Construction & Building Technology
Junil Pae, Namkon Lee, Sungwook Kim, Juhyuk Moon
Summary: This study investigated the influence of flow distance and casting direction on the properties of steel fibers in ultra-high performance fiber-reinforced concrete (UHPFRC). The results indicated that fiber content is the dominant factor affecting the dispersion of fibers in the UHPFRC.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Jiho Moon, Kwang Soo Youm, Jong-Sub Lee, Tae Sup Yun
Summary: This study investigated the flowability and mechanical properties of cost-effective steel fiber reinforced ultra-high performance concrete (UHPC) by using locally available materials for field-cast application. The results showed that the proposed UHPC had similar mechanical properties compared with conventional UHPC while the flow retention over time was enhanced so that the field-cast application seemed appropriately cost-effective. X-ray computed tomographic imaging was performed to investigate the steel fiber distribution inside the UHPC.
STEEL AND COMPOSITE STRUCTURES
(2022)
Article
Chemistry, Physical
Hong Jiang, Kewei Wang, Hui Wang
Summary: By adding secondary aluminum ash (SAA), the performance of reactive powder concrete (RPC) can be improved while solidifying the solid waste. However, when reinforced with steel bars in a coastal environment, RPC is susceptible to corrosion by NaCl. This study investigated the corrosion resistance of reinforced RPC, and found that the addition of SAA can enhance the corrosion resistance.
Article
Construction & Building Technology
Jianjun Han, Zhuang Miao, Julian Wang, Xianlei Zhang, Yajun Lv
Summary: The corrosion damage mechanism of ultra-high-performance steel fiber-reinforced concrete (UHPSFRC) was investigated using micron-level X-ray computed tomography. The grid structure formed by the interconnecting steel fibers was found to be a key factor in inducing corrosion damage. Specimens with 1% steel fiber content showed strong corrosion resistance. Steel fiber corrosion resulted in cracking or spalling of the concrete cover from the outside to the inside of UHPSFRC, and areas with higher initial density of steel fibers exhibited more severe damage.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Baozhen Jiang, Kotaro Doi, Koichi Tsuchiya
Summary: This study investigates the mechanical behavior of naturally generated corrosion products at the micro-scale level and discusses the influences of porosity, crystallinity, and grain size on their mechanical properties through microstructural characterization.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Liusheng Chu, Ye Tian, Danda Li, Yuexi He, Hu Feng
Summary: This paper studied and compared the existing calculation methods for shear capacity of SRC column-steel beam joints from different standards. Through experiments, it was found that the main design parameters were axial compression ratio and concrete slab width, with an increase in the axial compression ratio leading to higher shear capacity of the joints. Additionally, the presence of an RC slab greatly increased the shear capacity of the joints.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
T. Auger, V Michel, L. Cassayre, H. Baketi, B. Barkia, A. Michel, E. Perrin
Summary: The liquid metal embrittlement sensitivity of a low nickel 316 L austenitic steel with eutectic gallium indium alloy was studied, showing that limiting deformation-induced martensite can design austenitic steels resistant to liquid metal embrittlement at low temperatures.
Article
Green & Sustainable Science & Technology
Sandra Juradin, Frane Mihanovic, Nives Ostojic-Skomrlj, Ela Rogosic
Summary: This paper investigates the use of waste cotton T-shirts for reinforcing pervious concrete. The results show that the waste textile strips can improve the mechanical properties and durability of the concrete, as well as enhance the ductility of pervious concrete.
Article
Construction & Building Technology
Woongik Hwang, Ki Yong Ann
Summary: This study developed a model to simulate the formation of rust and quantify its structural impact in steel reinforced concrete. Variables such as interfacial gap, cover depth, and steel rebar diameter were considered in the model. The results showed that the interfacial gap had the most significant influence on the structural limitation caused by steel corrosion, followed by steel diameter and cover depth. Under a cover depth of 75mm and a steel diameter of 20mm, the rust amount needed to reach yielding varied from 2.66-11.58μm for an interfacial gap of 1-10μm, while the equivalent rust formation ranged from 16.95-27.69μm.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Shuo Feng, Rajesh Kumar Singh, Yucheng Fu, Zhuo Li, Yulong Wang, Jie Bao, Zhijie Xu, Guosheng Li, Cassidy Anderson, Lili Shi, Yuehe Lin, Peter G. Khalifah, Wei Wang, Jun Liu, Jie Xiao, Dongping Lu
Summary: In this study, a simple strategy was demonstrated for constructing low-tortuosity through-pores in both vertical and planar directions of electrodes by casting large particles into single-particle-layer electrodes. Through multi-scale characterizations and simulations, correlations between material/electrode structures, electrolyte permeability, polysulfide migration, and sulfur reactions were elucidated. The high-loading and dense sulfur cathode fabricated by this method delivers a high specific capacity at a very low electrolyte/sulfur ratio.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
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.