Article
Materials Science, Multidisciplinary
Ke Wang, Qi Chao, Murugesan Annasamy, Peter D. Hodgson, Sebastian Thomas, Nick Birbilis, Daniel Fabijanic
Summary: This study examines the effect of post-processing annealing on the pitting behavior of LPBF 316L stainless steel, and finds that high temperature annealing leads to oxide transformation and Cr depletion, resulting in a decrease in pitting potential and repassivation potential.
Article
Materials Science, Multidisciplinary
Takahito Aoyama, Chiaki Kato
Summary: The chelated complex of Cu2+ [Cu (EDTA)]2- was utilized to introduce Cu2+ from the outside to the inside of a crevice. The introduced Cu2+ was expected to function as an inhibitor against crevice corrosion on stainless steels. Crevice corrosion tests confirmed the migration of [Cu (EDTA)]2- and its reaction with H+ inside the crevice, which prevented the decrease in pH and subsequent active dissolution of the stainless steel.
Article
Materials Science, Multidisciplinary
Fangqiang Ning, Jibo Tan, Ziyu Zhang, Xiang Wang, Xinqiang Wu, En-Hou Han, Wei Ke
Summary: The crevice corrosion behaviors of Alloy 690 and 405 stainless steel in chloride solutions with different concentrations of thiosulfate were studied using a self-designed electrochemical testing device. The increase in Cl-/S2O3 2- concentration ratio promotes the crevice corrosion of Alloy 690. The crevice corrosion mechanisms of Alloy 690 and 405 stainless steel are also discussed.
JOURNAL OF NUCLEAR MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
E. Shojaei, M. H. Moayed, M. Mirjalili, S. Pahlavan
Summary: The study reveals that crevice corrosion of 316L stainless steel in 3.5% NaCl solution initiates with pitting events stabilization. The stability of pits decreases and the induction time increases as the crevice gap increases.
Article
Materials Science, Multidisciplinary
Pei He, Donghua Suo, Wenbo Wu, Liqiang Yin, Wei Dai, Binggang Shang, Yuanyuan Liu, Yangting Sun, Yiming Jiang, Jin Li
Summary: The crevice corrosion behaviors of hydrogen-charged duplex stainless steel 2205 were investigated. It was found that absorbed hydrogen decreases the critical conditions of crevice corrosion and affects its stages. Microstructural analysis revealed that hydrogen-charged specimens exhibited different morphologies compared to uncharged specimens.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Coatings & Films
Oriana Palma Calabokis, Yamid Nunez de la Rosa, Carlos M. Lepienski, Rodrigo Perito Cardoso, Paulo Cesar Borges
Summary: Nitriding treatment on UNS 532750 super duplex stainless steel improved hardness, general corrosion resistance, passive layer breakdown potential, and crevice corrosion resistance. Nitrogen played a crucial role in the passivation behavior and susceptibility to repassivation of localized corrosion.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Kaige Wu, Jae-Yeon Kim
Summary: This study proposed a strategy to control the evolution of open morphology pitting corrosion in 304 stainless steel specimens, monitored the corrosion process through acoustic emission signals, and discussed the sources of acoustic emissions associated with the open morphology of pitting corrosion.
Article
Chemistry, Multidisciplinary
Jingsi Peng, Guojun Ji, Zhiming Shi, Xiaohuan Wang
Summary: ZrO2-coated stainless steel was prepared on the surface of 304 stainless steel using a sol-gel method, and an effective numerical model was established using the finite element method to simulate its electrochemical corrosion in a 5% NaCl solution. The model successfully explained the influence of ZrO2 density on the corrosion resistance of stainless steel by simulating changes in electrode/electrolyte potential, ion concentration, and oxygen concentration during the polarization process.
Article
Materials Science, Multidisciplinary
Heng Liu, Cunao Feng, Zening Wang, Yi Zhang, Dekun Zhang, Yu Yan
Summary: Fretting crevice corrosion of total hip joints is related to joint replacement failure. In this study, an artificial crevice system that could simulate fretting corrosion in the center of the crevice was designed, and the effects of different crevice widths and crevice corrosion on fretting corrosion were studied.
Article
Materials Science, Multidisciplinary
Jing Wu, Meng Li, Yang Zhou, Chuanchuan Lin, Jixi Zhang, Kaiyong Cai
Summary: Corrosion is a major reason for the failure of metallic implants. The presence of bone marrow derived mesenchymal stem cells (BMSCs) can decrease the stability of 316 L stainless steels (316 L SS), leading to preferential pitting corrosion initiation at the peripheries of BMSCs.
Article
Materials Science, Multidisciplinary
Leonardo Bertolucci Coelho, Daniel Torres, Miguel Bernal, Gian Marco Paldino, Gianluca Bontempi, Jon Ustarroz
Summary: This study proposes the use of Scanning Electrochemical Cell Microscopy (SECCM) to collect corrosion activity from random locations on 316 L SS. Pitting corrosion was triggered by potentiodynamic polarization tests in the presence of chloride. Data science methods were employed to analyze 955 j Vs E curves and understand the conditional log(j) distributions at different potentials. The study found that the log(j) distribution was potential-dependent and became more random with increasing testing aggressiveness.
Article
Materials Science, Multidisciplinary
Bin Luo, Qian Hu, Jing Liu, Feng Huang
Summary: The effect of crevice gap size on the crevice corrosion behavior of 2205 duplex stainless steel in NaCl solution was investigated. The study found that the crevice gap size influences the acidification rate of the crevice solution and the initiation period time of crevice corrosion through volume effect and diffusion effect, with diffusion effect having a more significant impact on the initiation period time. The corrosion development process is mainly determined by the potential and current density distribution within the crevice, and the crevice gap size is the dominant factor for the development mechanism of crevice corrosion.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Donghua Suo, Jinming Zhang, Wenbo Wu, Longlin Lei, Yangting Sun, Yiming Jiang, Jin Li
Summary: In this paper, the initiation of crevice corrosion of hydrogen-charged 2507 was studied and the effect of different Na2MoO4 concentrations on crevice corrosion was investigated. It was found that Na2MoO4 inhibits the adverse effect of hydrogen and enhances the inhibition of crevice corrosion. In addition, hydrogen-charged 2507 crevice corrosion initiates in the austenite phase. While Na2MoO4 improves the crevice corrosion resistance of both phases, crevice corrosion initiation sites changed in reverse, initiating in the ferrite phase.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Yunlong Wu, Jing Nong, Sui Yuan, Qi Guo, Jian Xu
Summary: This study investigated the acoustic emission behavior of a single pit evolution on two types of stainless steels using small-scaled electrodes, finding that there were dozens of AE signals observed during pitting on 17-4 PH, but much less acoustically emissive on 304 SS. In-situ optical observation revealed black flocculent clusters in 17-4 PH during pitting, while this process was weak in 304 SS. It was concluded that the formation of hydrogen bubble inside the pit and the perturbation of electrolyte around the pit created AE signals.
Article
Materials Science, Multidisciplinary
Yang Zhao, Yong Hua, Bin Liu, Xuanpeng Li, Junfeng Xie, Guanxin Zeng, Tao Zhang, Fuhui Wang
Summary: A multi-degree of freedom mechanistic-chemometrics model has been developed to accurately predict the pitting damage of HP-13Cr stainless steel by combining mechanistic models and chemometrics methods, considering single factors and their interactions through weight coefficients. The accuracy and reliability of the model are validated by six-year-served field data.
Article
Materials Science, Multidisciplinary
Silvia J. Salgar-Chaparro, Katerina Lepkova, Thunyaluk Pojtanabuntoeng, Adam Darwin, Laura L. Machuca
Article
Multidisciplinary Sciences
Silvia J. Salgar-Chaparro, Adam Darwin, Anna H. Kaksonen, Laura L. Machuca
SCIENTIFIC REPORTS
(2020)
Article
Chemistry, Multidisciplinary
Jhonatan Soto Puelles, Mahdi Ghorbani, Ruhamah Yunis, Laura L. Machuca, Herman Terryn, Maria Forsyth, Anthony E. Somers
Summary: The use of CTA-4OHcinn effectively inhibits corrosion of mild steel 1030 at 0.01 M NaCl concentration, achieving up to 97.8% inhibition efficiency. EIS analysis shows that the inhibitor increases local electric resistance on the metal surface while decreasing local capacitance, hindering charge transfer in corroding regions.
Article
Materials Science, Multidisciplinary
Mohammed Bassil Albahri, Ahmed Barifcani, Stefan Iglauer, Maxim Lebedev, Connor O'Neil, Silvia J. Salgar-Chaparro, Laura L. Machuca
Summary: The mechanism of pitting corrosion of carbon steel by an oilfield microbial consortium was investigated using a combination of X-ray micro-computed tomography (mu CT), surface analytical techniques and DNA/RNA-based 16S sequencing. The study identified Thermoanaerobacter sp. as the most active microorganisms in biofilms, with specific corrosion products phases and components present in biotic conditions.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Lina M. Silva-Bedoya, Elizabeth Watkin, Laura L. Machuca
Summary: The study reveals that rusticles grow at a rate of approximately 1 cm per year, mainly over the areas of the hulls that remained underwater. They consist of iron oxides and high levels of toxic metals, with a connection to the quality of antifouling paints.
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
(2021)
Article
Multidisciplinary Sciences
Benjamin Tuck, Elizabeth Watkin, Maria Forsyth, Anthony Somers, Mahdi Ghorbani, Laura L. Machuca
Summary: Chemical biocides are effective in combating microbiologically influenced corrosion (MIC); the novel organic corrosion inhibitor compound CTA-4OHcinn shows good inhibition effects on bacterial attachment; the study demonstrates the potential of CTA-4OHcinn as an environmentally friendly and multifunctional MIC inhibitor for industrial applications.
SCIENTIFIC REPORTS
(2021)
Review
Engineering, Chemical
Adnan Aftab, Aliakbar Hassanpouryouzband, Quan Xie, Laura L. Machuca, Mohammad Sarmadivaleh
Summary: Geological H-2 storage plays a critical role in transitioning to a renewable hydrogen economy and achieving net-zero emissions. However, challenges such as H-2 leakage, microbial consumption, and storage capacity limitations exist.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Biotechnology & Applied Microbiology
Erika M. Suarez, Katerina Lepkova, Maria Forsyth, Mike Y. Tan, Brian Kinsella, Laura L. Machuca
Summary: This study investigated under-deposit microbial corrosion (UDMC) in carbon steel pipelines in the oil and gas industry using a multi-electrode array (MEA) system. It found that a marine bacterium generated iron deposits on the steel surface, leading to pitting corrosion under anaerobic conditions. The presence of an organic film-forming corrosion inhibitor caused local breakdown of the protective film and subsequent pitting corrosion. The MEA system demonstrated its suitability to detect and evaluate the UDMC process and the efficiency of corrosion inhibitors.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Benjamin Tuck, Nadia Leinecker, Elizabeth Watkin, Anthony Somers, Maria Forsyth, Laura L. Machuca
Summary: In natural environments, microorganisms form biofilms on surfaces, which can lead to biofouling and microbiologically influenced corrosion. The heterogeneity of species in natural systems allows for higher tolerance to adverse conditions compared to laboratory simulations. However, current chemical treatments for biofilms are dangerous and face international restrictions. To address this, a multi-functional compound called CTA-4OHcinn has been developed to combat both corrosion and biofilm formation. This study demonstrates that CTA-4OHcinn is effective in reducing the viability of mature biofilms and targets the cell membrane, making it a true multi-functional organic corrosion inhibitor.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Microbiology
Benjamin Tuck, Silvia J. Salgar-Chaparro, Elizabeth Watkin, Anthony Somers, Maria Forsyth, Laura L. Machuca
Summary: Multispecies biofilms in marine environment pose a threat to marine-based industries, and the efficacy of biocides used against these biofilms is compromised due to microbial chemical tolerance. However, the understanding of species and extracellular polymeric substances (EPS) composition in marine biofilms is limited, hindering the development of effective and environmentally friendly biocides. This study investigates the composition of EPS and population dynamics in marine biofilms developed on steel. Results show that extracellular DNA (eDNA) is a critical structural component of the biofilms, and the biofilms exhibit stable and well-defined communities with distinct EPS profiles.
Review
Materials Science, Multidisciplinary
B. Tuck, E. Watkin, A. Somers, L. L. Machuca
Summary: The formation of multi-species biofilms on marine infrastructure leads to significant economic losses and lacks effective and environmentally friendly treatment methods. Incomplete understanding of natural biofilm development remains a major limitation for biofilm control measures.
NPJ MATERIALS DEGRADATION
(2022)
Article
Chemistry, Physical
Mahdi Ghorbani, Jhonatan Soto Puelles, Maria Forsyth, Rainier A. Catubig, Leigh Ackland, Laura Machuca, Herman Terryn, Anthony E. Somers
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2020)
Article
Microbiology
Silvia J. Salgar-Chaparro, Genis Castillo-Villamizar, Anja Poehlein, Rolf Daniel, Laura L. Machuca
MICROBIOLOGY RESOURCE ANNOUNCEMENTS
(2020)
Article
Microbiology
Silvia J. Salgar-Chaparro, Genis Castillo-Villamizar, Anja Poehlein, Rolf Daniel, Laura L. Machuca
MICROBIOLOGY RESOURCE ANNOUNCEMENTS
(2020)
Article
Microbiology
Silvia J. Salgar-Chaparro, Genis Castillo-Villamizar, Anja Poehlein, Rolf Daniel, Laura L. Machuca
MICROBIOLOGY RESOURCE ANNOUNCEMENTS
(2020)
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.
