Article
Materials Science, Multidisciplinary
Xuankai Wang, Hui Su, Yi Xie, Jun Wang, Chao Feng, Dengke Li, Tangqing Wu
Summary: In this study, the corrosion behavior and mechanism of H62 brass and T2 copper in an urban atmosphere were investigated. Copper mainly forms Cu2O and CuO as corrosion products, with the presence of a small amount of Cu2Cl(OH)3. Brass shows additional Zn-containing compounds, such as ZnCl, ZnO, and ZnS, in its corrosion product. The corrosion rate of brass decreases with time, while that of copper initially increases and then decreases after 12 months. Brass exhibits better corrosion resistance than copper in the urban atmosphere. The results of this study provide scientific data support for material selection and life prediction of equipment used in urban environments.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Engineering, Mechanical
Xuankai Wang, Yi Xie, Chao Feng, Zhimin Ding, Dengke Li, Xiaobao Zhou, Tangqing Wu
Summary: By comparing the microstructure and atmospheric corrosion of tin coatings on H62 brass and T2 copper, it was found that the tin coating on brass had more inclusions and higher local corrosion sensitivity. The local corrosion sensitivity and R value of the tin coatings on both copper and brass were higher on the skyward surface than on the earthward surface. The preferential corrosion of (101) oriented crystal particles was the main reason for the higher corrosion sensitivity of the tin coatings, and preferential wetting, suspended particles, and rainwater scouring also influenced the corrosion process of the tin coating.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Chemistry, Physical
Ambrish Kumar, Arpit Thomas, Mayank Garg, Gopinath Perumal, Harpreet S. Grewal, Harpreet S. Arora
Summary: Supercapacitors are widely used in advanced energy applications due to their rapid charge-discharge, low maintenance, high power density, versatile operating temperatures, and durability. Transition metal oxides, especially nano-textured CuO structures, have gained attention as electrode materials for supercapacitors, but the existing techniques involve multiple steps and need improvement for commercial viability. A two-step approach involving surface activation and electrochemical dealloying was reported to develop a 3D hierarchical CuO microstructure with high areal capacitance, cycling stability, and energy density, making it promising for advanced supercapacitors and portable electronics.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Biochemistry & Molecular Biology
Darshan Jayasinghe Karunarathne, Alireza Aminifazl, Tori E. Abel, Karen L. Quepons, Teresa D. Golden
Summary: In this study, the inhibitive performance of pyridine-2-thiol in a corrosive solution for brass was investigated. The results showed that the addition of pyridine-2-thiol significantly reduced the corrosion rate of the brass, and resulted in fewer surface defects.
Article
Chemistry, Physical
K. Shalabi, Ebrahim Abdel-Galil, A. H. El-Askalany, Y. M. Abdallah
Summary: The study evaluated the corrosion inhibition behavior of some triazine derivatives, including TA-1 and TA-2, for copper in 1 M HNO3 solutions. The compounds were found to be virtuous inhibitors with mixed-type inhibition behavior, reaching maximum inhibition efficiencies of 91.4% and 88.9% at 10(-4) M, respectively.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Multidisciplinary
Yiming An, Yumeng Chen, Xue Lei, Song Gao, Mudi Xin, Fulin Qiao, Yue Zhao, Lushen Zuo, Fei Sun, Chunlu Wang
Summary: A series of tetraphenylethylene-based dicationic AIE compounds were developed and studied for their corrosion inhibition behavior towards steel and brass. TPE-2NH(3)•2SCN was proven to be an effective corrosion inhibitor for both metals, with inhibition efficiencies of over 97% for steel and over 99% for brass.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Engineering, Chemical
Sara A. Mahdy, Soha A. Abdel-Gawad, Rabab M. El-Sherif, I. M. Ghayad
Summary: The performance of 5-phenyl-1H-tetrazole (PTAH) and 5-(4-pyridyl)-1H-tetrazole (PyTAH) as corrosion inhibitors on copper and commercial brass in simulated seawater containing 3.5% NaCl was investigated. The results showed that PTAH exhibited better corrosion inhibition efficiency with 97% for copper and approximately 96% for brass at an optimal concentration of 0.01 M. Surface investigations revealed that the presence of PTAH significantly protected the copper and brass surfaces. The Langmuir adsorption isotherm indicated physiochemical adsorption of the inhibitors on the sample surfaces, while the Arrhenius plot demonstrated an increase in corrosion reaction activation energy after the addition of the inhibitor, indicating its inhibitive effect on copper and brass surfaces.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Electrochemistry
Vishant Garg, Sagar B. Sharma, Sandrine Zanna, Antoine Seyeux, Vincent Maurice, Philippe Marcus
Summary: In this study, electrochemistry and advanced surface analyzes were used to investigate the inhibition of copper corrosion by 2-mercapto-benzothiazole (2-MBT) in hydrochloric aqueous solution and the influence of electrochemical control on the formation of the inhibiting interface. The results showed that reduction of the native surface oxide prior to exposure to the inhibitor significantly decreased the rate of anodic dissolution. Increasing the exposure time to the inhibitor enhanced the protection against dissolution. 2-MBT adsorbed as multilayers and bonded to both metallic copper and residual copper oxide islands through its sulphur atoms. Partial dissociation of the molecule released exocyclic sulphur, which bonded to metallic Cu. Further dissociation released endocyclic sulphur, induced by anodic polarization, causing defects in the organic layer and compromising its barrier properties.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Physical
Jose D. Castro, M. J. Lima, S. Carvalho
Summary: Copper-based materials can be safe and economic alternatives for producing anti-biofouling coatings. This study shows that oxygen incorporation into copper films can change their growth profile, and CuxOy coatings exhibit poor corrosion resistance and high ion release in seawater.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Wenpo Li, Wei Luo, Xinke Yu, Chaowei Ma, Yan Xiong, Bochuan Tan, Yujie Qiang
Summary: In this study, a new anti-corrosion regent CMP was developed and its corrosion inhibition performance on copper in sulfuric acid solution was investigated. The results demonstrated that CMP exhibited good corrosion inhibition effect on copper, with the inhibition efficiency dependent on temperature and concentration. Chemical adsorption was found to be the adsorption type between CMP and copper surface.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Inorganic & Nuclear
Renhui Zhang, Liping Xiong, Zhongyi He, Jibin Pu, Lei Guo
Summary: A hybrid environment-friendly water-soluble corrosion inhibitor containing Sb quantum dots was synthesized, and its inhibition efficiency was found to be dependent on the concentration of SQDs, with the best performance observed at 200 mg/L.
INORGANIC CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Kyungsob Choi, Hyunsik Park
Summary: This study proposed gaseous reduction by hydrogen as a method to decrease carbon dioxide emissions during the recovery of zinc and copper from brass waste. The reduction behavior and kinetics of brass waste were investigated under different hydrogen partial pressures and temperatures, and it was found that the reduction rate increased with higher hydrogen partial pressure and temperature.
Article
Chemistry, Physical
Shenying Xu, Zipeng Luo, Jian Zhang, Bochuan Tan, Shengtao Zhang, Wenpo Li
Summary: 1-Dodecyl-3-Methyl-1H-Imidazolium Nitrate (DMIN) demonstrates excellent corrosion inhibition efficiency on copper in sulfuric acid solution, forming an effective protective film and exhibiting high-quality anti-corrosion ability.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Materials Science, Multidisciplinary
Deborah Biggio, Bernhard Elsener, Davide Atzei, Antonella Rossi, Marzia Fantauzzi
Summary: The composition of natural saliva is highly variable and unstable outside the oral cavity, leading to the use of artificial saliva solutions in corrosion testing. This study investigates the corrosion behavior of a CuZn37 alloy exposed to different saliva solutions with varying compositions. The results show that the corrosion rate of the alloy is influenced by the different saliva solutions, and the presence of organic compounds may limit the formation of a protective surface film.
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
(2023)
Article
Chemistry, Physical
Dawei Guan, Jinwei Wang, Xiaojing Lv
Summary: This study investigates the rapid preparation of composite Cu2-xSe thin films on brass using liquid chemical deposition. The addition of acetic acid in the oxidizing solution leads to smaller selenide particles and smoother films. The films also become thinner and denser. The presence of copper acetate, formed by the addition of acetic acid, inhibits the growth of copper selenides, resulting in decreased film thickness. The miniaturization of selenide particles improves the hardness and wear resistance of the composite films. Sealing the composite films with sodium silicate further enhances their corrosive resistance.
JOURNAL OF ALLOYS AND COMPOUNDS
(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.