Article
Materials Science, Multidisciplinary
Hongwei Zhang, Cheng Man, Chaofang Dong, Liwei Wang, Wen Li, Decheng Kong, Li Wang, Xin Wang
Summary: The critical NaF concentrations for both SLM and wrought Ti6Al4V are similar, and the levels of aluminum and fluoride decrease with higher NaF concentrations and pH values. The SLM sample demonstrates significantly worse corrosion resistance compared to the wrought Ti6Al4V in almost all test solutions.
Article
Materials Science, Multidisciplinary
Shivangi Gupta, Kapil Kumar Gupta, Martin Andersson, Rouhollah Yazdi, Rajan Ambat
Summary: This study investigated the corrosion inhibition of L80-1Cr steel by alkanolamine molecules in a CO2-saturated NaCl solution. The results showed that at 20 degrees C, the corrosion rate was more influenced by alkanolamine injection. Experimental and molecular modelling calculations demonstrated that alkanolamine adsorption/desorption played a crucial role in the kinetics and characteristics of FeCO3 formation. Additionally, the efficiency of the inhibitors depended on their chemical structures and adsorption energy on Fe(110), FeCO3(104), and Fe3C(001), with ethanolamine providing the highest efficiency.
Article
Materials Science, Multidisciplinary
L. Prince, M-A. Rousseau, X. Noirfalise, L. Dangreau, L. B. Coelho, M. -G. Olivier
Summary: This study investigated the effect of carbonate ions on the corrosion protection of AZ31 magnesium alloy, highlighting the inhibitive effect of CO32- ions and discussing the underlying mechanisms. Multiple techniques including EIS, potentiodynamic polarization measurements, hydrogen evolution tests, SEM-EDX analysis, and XPS were used to analyze the corrosion behavior.
Article
Materials Science, Multidisciplinary
Sang-Jin Ko, Yun-Ho Lee, Ki-Seok Nam, Eun-Ha Park, Jung-Gu Kim
Summary: The effects of different surface conditions, namely carbonaceous residue, copper chloride, and deposit, were quantitatively evaluated for their impact on localized corrosion. Electrochemical analysis and corrosion simulation showed that all three surface conditions induced localized corrosion on copper, with the pitting factor increasing in the order of deposits, copper chloride, and carbonaceous residue. Corrosion simulation further revealed that the galvanic corrosion current density increased as the surface coverage and density of chloride residue decreased.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Jingwei Liang, Shibo Wu, Bingwei Li, Zhenglong Lei, Yanbin Chen, Meng Jiang, Xinrui Zhang, Xi Chen
Summary: The microstructure and corrosion behavior of Y-modified ZK60 Mg alloy prepared by laser powder bed fusion (LPBF) were investigated. By adjusting the Y content, the quantity, distribution, and type of precipitates were controlled to improve corrosion resistance. The ZK60 alloy with 1 wt% Y exhibited excellent corrosion resistance, mainly due to the formation of a continuous network of rare earth-containing precipitates at the grain boundaries, which acted as corrosion barriers and induced grain refinement. Additionally, the passivation and stability of the surface film were improved after Y addition.
Article
Chemistry, Physical
Sheetal, Sirsendu Sengupta, Manjeet Singh, Sanjeeve Thakur, Balaram Pani, Priyabrata Banerjee, Savas Kaya, Ashish Kumar Singh
Summary: The introduction of organic moieties as corrosion inhibitors has expanded the research in the field of corrosion protection. In this study, aryl-substituted benzothiazoles were synthesized and their anti-corrosive behavior on mild steel in hydrochloric acid was investigated. The experimental results showed that benzothiazoles exhibited significant corrosion inhibition, with 6-(4-methoxyphenyl) benzo[d]thiazol-2-amine showing the highest efficacy.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Materials Science, Multidisciplinary
Juan Qiu, Xiang Gao, Kanglu Feng, Houyi Ma
Summary: Films with micron thickness were prepared on copper through thiol-based click reaction without metal catalyst or light irradiation. The protection efficiencies of the epoxy silane and vinyl ester-silane participated click-assembly films were 99.6% and 99.4%, respectively. The film formation was driven by the strong interaction between thiol and copper, leading to the formation of new C-S bonds via thiol-ene or thiol-epoxy reaction. Molecular dynamics simulation provided theoretical support for the experimental conclusion by revealing the most stable adsorption configurations and adsorption energy of the building blocks on the copper substrate.
Article
Materials Science, Multidisciplinary
Xiaokang Yue, Ningsong Qu, Xin Ma, Hansong Li
Summary: The anodic electrochemical behaviors of titanium matrix composites in different electrolytes were investigated. The corrosion resistance is better in NaNO3 electrolyte due to the formation of a more stable passive film. The dissolved surface quality is better in NaCl electrolyte, but the current efficiency is lower.
Article
Chemistry, Physical
Zhijian Zhang, Tiechui Yuan, Ruidi Li
Summary: The corrosion behavior of the SLM MEA and cast MEA was compared, revealing that the SLM MEA has inferior corrosion resistance due to metallurgical defects and smaller grain size. Specifically, the XY-plane of the SLM MEA showed poorer corrosion resistance than the XZ-plane, attributed to metallurgical defects, lack of fusion pores, and higher grain boundary density.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Ying Yan, Yan Zhu, Lehua Zhang, Cong Zou, Zhichao Hu, Hao Zhou, Lankun Cai
Summary: This study investigated the corrosion properties of AISI E52100 steel when used as lubricants in two different ionic liquids, showing that increasing temperature accelerates corrosion and different ionic liquids lead to different corrosion behaviors. The electrochemical tests and surface analysis revealed the active dissolution of the steel and the formation of different corrosion products on the surface.
RESEARCH ON CHEMICAL INTERMEDIATES
(2021)
Article
Materials Science, Multidisciplinary
Zining Liu, Baomin Fan, Jingmao Zhao, Biao Yang, Xingwen Zheng
Summary: Host-guest assemblies of beta-cyclodextrin (beta-CD) loaded with 2-mercaptobenzothiazole (MBT) or 2-aminobenzothiazole (ABT) were used to distinguish their anticorrosive mechanisms for copper in aqueous phase. The protective efficacies were evaluated and MBT and ABT showed optimal inhibition efficiencies of 95.6% and 89.2% respectively using cathodic-dominated mixed-type inhibition mechanism at a dosage of 0.5 g/L. The differentiated inhibition behaviors were attributed to varied guest release mechanisms and different bonding strengths of Cu-S and Cu-N, as supported by theoretical simulations.
Article
Chemistry, Physical
Priya Kumari Paul, Raj Kumar Mehta, Mahendra Yadav, I. B. Obot
Summary: Two triazepine derivatives, AITT and EHTC, were successfully synthesized and demonstrated to be effective corrosion inhibitors for mild steel in 15% HCl medium. The inhibitors showed promising inhibiting performance, with AITT exhibiting higher efficiency than EHTC. The adsorption of the inhibitors on the metal surface played a key role in the protection mechanism. The inhibitors were found to be mixed-type inhibitors, as supported by potentiodynamic polarization experiments and Langmuir Adsorption isotherm analysis. The application of the inhibitors resulted in significant improvement in the damaged surface, as observed through surface topographical analysis. XPS analysis confirmed the presence of the inhibitors on the inhibited metal surface. Computational methods, including Monte-Carlo Simulation, DFT, and Fukui calculations, further supported the experimental findings.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Baluchamy Tamilselvi, Durvas Seshian Bhuvaneshwari, Sethuramasamy Padmavathy, Pandian Bothi Raja
Summary: Pichia sp. isolated from rotten gooseberry was studied for its corrosion inhibition properties using biofilm formation. The results showed that Pichia sp. has good inhibitory effects on mild steel corrosion in 1 M H2SO4, forming a stable biofilm and reducing corrosion reaction through physical adsorption.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Materials Science, Multidisciplinary
Saumyadeep Jana, Matt Olszta, Danny Edwards, Mark Engelhard, Avik Samanta, Hongtao Ding, Pratik Murkute, O. Burkan Isgor, Aashish Rohatgi
Summary: Laser surface processing improved the corrosion resistance of AZ31 alloy by forming a mixed metal oxide surface film and refining the size and number density of intermetallic particles.
Article
Materials Science, Multidisciplinary
Jiapeng Sun, Bingqian Xu, Zhenquan Yang, Feihu Jiang, Keke Yang, Jing Han, Guosong Wu
Summary: A hierarchal micro-nano beta phase framework is proposed to improve the barrier effect of the second phase in high-aluminum-containing Mg-Al alloy, which effectively mitigates corrosion due to the formation of a brick-and-mortar structured corrosion product layer.
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.