Article
Materials Science, Multidisciplinary
Ellen Synnove Skilbred, Simona Palencsar, Arne Dugstad, Roy Johnsen
Summary: The hydrogen uptake of carbon steel wires in a corrosive environment was measured. It was found that the accumulation of retained carbide decreased the hydrogen uptake for most materials, except for the material with the lowest carbon content. Additionally, the hydrogen uptake increased with higher carbon content, possibly due to hydrogen trapping on ferrite-cementite interfaces.
Article
Materials Science, Multidisciplinary
Makoto Kawamori, Fumio Yuse
Summary: The entry of hydrogen and hydrogen embrittlement of high-strength steel in atmospheric corrosion environment were investigated using in-situ hydrogen permeation technique and a strain gage method respectively. It was found that the hydrogen concentration increased at the beginning of corrosion and when the corrosion reaction was accelerated, such as when a typhoon approached. Hydrogen embrittlement occurred when the surface hydrogen concentration exceeded the critical hydrogen concentration. It was directly demonstrated that hydrogen embrittlement crack initiation, arrest, and propagation are repeated accompanied with hydrogen entry and release due to environmental changes, leading to final fracture.
Article
Materials Science, Multidisciplinary
Weimin Zhao, Tianhai Du, Xiaoshuang Li, Haomei Sun, Beibei Li, Shuai Yuan
Summary: The study found that the hydrogen diffusion coefficient is mainly determined by the final heattreated peak temperature, and the key microstructural affecting factors of hydrogen permeation will change with this temperature.
Article
Materials Science, Multidisciplinary
Yichao Liu, Xiankang Zhong, Zhitao Wang, Kyra Sedransk Campbell, Li Zhou, Xi Yuan, Jiansheng Yu, Lingjie Li, Junying Hu
Summary: The permeation of hydrogen generated from the corrosion of low carbon steel by elemental sulfur was investigated using a double cell system and its impact on the mechanical properties of the steel was discussed. The results showed that the corrosion of low carbon steel by elemental sulfur resulted in significant hydrogen permeation, with a current of 12.3 mu A/cm2 observed in a CO2-containing environment at 80 degrees C. The process of hydrogen permeation was influenced by the structure and composition of the corrosion product, environmental temperature, and gas composition. This permeating hydrogen increased the brittleness of the low carbon steel and was prone to hydrogen-induced cracking.
Article
Materials Science, Multidisciplinary
Shinji Ootsuka, Flavien Vucko, Varvara Shubina Helbert, Andrei Nazarov, Dominique Thierry
Summary: The scanning Kelvin probe (SKP) can be used to map subsurface hydrogen in steels, but it has poor quantification. On the other hand, the electrochemical permeation technique (EPT) is highly sensitive to hydrogen flux but has low spatial resolution. To overcome this, a local hydrogen quantification method using SKP measurements calibrated by EPT was developed. The method was applied to map subsurface hydrogen in steel corroding under various atmospheric corrosion conditions.
Article
Materials Science, Multidisciplinary
Bo Liu, Menghao Liu, Zhiyong Liu, Cuiwei Du, Xiaogang Li
Summary: The effect of nitrate-reducing bacteria (NRB) on the hydrogen embrittlement of X80 steel in a near-neutral pH solution was studied. It was found that NRB promote the formation of numerous pits on the steel surface and increase the polarization current at the same polarization potential. The probability of hydrogen penetration into the biotic medium leads to higher hydrogen embrittlement compared to the sterile medium.
Article
Chemistry, Physical
Kejun Shi, Shu Xiao, Qingdong Ruan, Hao Wu, Guohua Chen, Chilou Zhou, Saihua Jiang, Ke Xi, Mohan He, Paul K. Chu
Summary: The study demonstrates that using in situ deposition of multi-layered graphene coatings can mitigate hydrogen embrittlement of steel, improve its hydrogen resistance and corrosion resistance. By enhancing coating adhesion and inhibiting hydrogen diffusion, outstanding results are achieved in slow strain rate tests.
APPLIED SURFACE SCIENCE
(2022)
Article
Electrochemistry
Xiaole Han, Masatoshi Sakairi
Summary: The effect of Al3+ on the hydrogen permeation behavior of steel during cyclic corrosion was investigated. Electrochemical techniques were used to measure the permeated hydrogen. Corrosion morphology observation and corrosion product analysis were conducted. It was found that Al3+ had a significant effect on corrosion morphology and hydrogen entry into steel. Increasing Al3+ concentrations resulted in a higher amount of permeated hydrogen.
ELECTROCHIMICA ACTA
(2023)
Article
Materials Science, Multidisciplinary
Anastasija Lazareva, Joshua Owen, Silvia Vargas, Richard Barker, Anne Neville
Summary: The study provides new insights into the evolution of FeCO3 layer and its connection to the initiation and propagation of localized corrosion on carbon steel in CO2-saturated environments. The research identifies crevice-like regions at boundaries/edges of FeCO3 crystals as potential precursors to long-term localized corrosion.
Article
Chemistry, Physical
Yinghao Sun, Y. Frank Cheng
Summary: This study investigated the metallographic characteristics, hardness, hydrogen permeation, and distribution of an X80 steel weld. It was found that the HAZ exhibited the highest corrosion current density and hydrogen trapping density, and under plastic stress, hydrogen diffusivity decreased while hydrogen concentration and trapping density increased.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
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
Zhen Zhao, Mingliang Liu, Qingjun Zhou, Moucheng Li
Summary: The hydrogen permeation behavior of QP1180 high strength steel for automobile in a simulated coastal atmosphere environment was studied. The results show that the hydrogen permeation current density increases with the decrease of relative humidity and changes periodically during the corrosion process. Plastic deformation increases the diffusible hydrogen content in steel but reduces the hydrogen permeation current.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Engineering, Multidisciplinary
Nengli Xiao
Summary: The use of conductive polymers for metal corrosion inhibition is important. A polypyrrole anticorrosive coating was synthesized on the surface of structural steel Q235 via potentiostatic deposition. The best deposition performance was achieved by adjusting the deposition potential value in a stirred ice bath. Potentiostatic deposition can yield effective anticorrosive coatings over a wide voltage range. The proposed coating has extended the lifespan of metal materials in civil engineering applications.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Qichao Zhang, Yishan Jiang, Xin Zhao, Penglei Song, Tingting Kuang, Juna Chen, Zhongtao Sun, Yaopeng Zhang, Xiayu Ai, Dongzhu Lu, Yanliang Huang
Summary: The study focuses on the key issue of metal containers in the deep geological disposal of high-level nuclear waste. It is found that long-term disposal can result in hydrogen embrittlement, but the use of Q235 steel material can effectively reduce the sensitivity to hydrogen embrittlement.
FRONTIERS IN MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Yong Xu, Yanliang Huang, Fanfan Cai, Zhengquan Wang, Dongzhu Lu, Xiutong Wang, Lihui Yang
Summary: In this study, the hydrogen permeation behavior and mechanism of AISI 4135 steel in different marine corrosion zones were investigated for the first time using an in situ hydrogen permeation monitoring system via outdoor and indoor tests. The results showed that the hydrogen permeation current density was positively correlated with the corrosion rate of the steel in the marine environments.
APPLIED SCIENCES-BASEL
(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.