Article
Materials Science, Multidisciplinary
Linqian Wang, Darya Snihirova, Min Deng, Cheng Wang, Bahram Vaghefinazari, Gert Wiese, Mark Langridge, Daniel Hoeche, Sviatlana Lamaka, Mikhail L. Zheludkevich
Summary: Electrochemical impedance spectroscopy measurements were used to study the surface evolution of magnesium in 0.05 M NaCl solution at three different pH levels. The thickness of the MgO film was calculated based on the assumption that the high frequency time constant originates from the surface film. Comparisons with actual surface conditions confirmed that the high frequency time constant is related to the barrier properties of the surface film.
Article
Materials Science, Multidisciplinary
Pingli Jiang, Ruiqing Hou, Shijie Zhu, Shaokang Guan
Summary: A CaCO3 coating was developed by hydrothermal treatment to enhance the anti-corrosion property of biodegradable magnesium alloy. The coating showed excellent corrosion protection and a possible transformation during immersion.
Review
Chemistry, Physical
Xiaodong Xue, Chunyong Liang, Donghui Wang, Feng Peng
Summary: Magnesium and its alloys have excellent mechanical properties and biodegradability, making them promising candidates in industrial and biomedical fields. However, their rapid corrosion limits their widespread applications. The development of self-healing coatings is essential to repair the damage and enhance their corrosion protection ability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Bo Li, Yonghua Duan, Shanju Zheng, Mengnie Li, Mingjun Peng, Huarong Qi
Summary: The effect of grain refinement on the corrosion behavior of Mg-Pb-9.2Al-0.8B alloy by equal channel angular pressing (ECAP) was investigated. The corrosion behavior of as-cast and ECAP samples in 3.5 wt% NaCl solution was compared and analyzed using open circuit potential (OCP) and electrochemical impedance spectroscopy (EIS). The results showed that grain refining reduced the corrosion resistance of the alloy, and the type of corrosion changed from local corrosion to uniform corrosion.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
Long Meng, Chun Lin, Sheng Fang, Lingsheng Ke, Mingtian Tan, Tao Qi Ab
Summary: The effect of rare earth yttrium (Y) on the corrosion resistance of FeCr0.7NiCu0.5Ti0.5 alloy in H2SO4 was investigated through constant potential passivation (CPP). It was found that the addition of Y led to the transformation of Ni3Ti microstructure and the expansion of Cu5Y phase. The corrosion resistance was evaluated using XPS etching analysis and cyclic polarization analysis, and it was observed that the addition of Y enhanced the protection and density of the passive film, resulting in improved corrosion resistance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Hang Xu, Yuan Li, Luoyi Wu, Fulin Jiang, Dingfa Fu, Jie Teng, Hui Zhang
Summary: The influence of heat treatments on the corrosion behavior of Mg-Re alloy was investigated. It was found that heat treatment can decrease the corrosion rate of the alloy and form fine corrosion grooves. The improved homogeneity and the introduction of beta' precipitate as a corrosion barrier contribute to the reduced corrosion rate.
Article
Materials Science, Coatings & Films
Yuanyong Ouyang, Zhihao Chen, Chunyun Jiang, Wenzhong Yang, Yun Chen, Xiaoshuang Yin, Ying Liu
Summary: A double-layer composite coating was prepared on AZ31 Mg alloys, consisting of disorderly distributed nanofibers and PO43- groups; the coating exhibited high bonding strength and reduced corrosion rate, showing great potential in orthopedic applications.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Xiaotian Duan, Tiezhuang Han, Xiao Guan, Yuning Wang, Huhu Su, Kaisheng Ming, Jing Wang, Shijian Zheng
Summary: In this study, the corrosion resistance of AlCoCrFeNi 2.1 alloy was found to be enhanced by the formation of BCC precipitates. The FCC phase with L1 2 precipitates and the B2 phase with BCC precipitates were protected by passive films enriched with Cr and Al elements respectively. The stability of the Al-rich passive film on the B2 phase was improved by the formation of Cr-rich BCC precipitates within the phase. Moreover, the Cr-rich passive film protected the BCC precipitates and inhibited the expansion of corrosion pits.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Xiaodong Lin, Xue Liang, Yifeng Li, Kun He, Peinan Du, Ruiqian Zhang, Ping Chen
Summary: The corrosion behaviors of a Fe13Cr4Al2Mo1.2Nb alloy were studied in 360 degrees C water and 400 degrees C steam. Similar dual-layered oxide scales were formed under both conditions, but the inner oxide layer was thicker in 400 degrees C steam, indicating steam-accelerated corrosion.
Article
Materials Science, Coatings & Films
Xiaopeng Lu, Jirui Ma, Marta Mohedano, Borja Pillado, Raul Arrabal, Kun Qian, Yan Li, Tao Zhang, Fuhui Wang
Summary: The study showed that sealing plasma electrolytic oxidation (PEO) coatings on AZ91 Mg alloy in calcium nitrate solutions at different pH values can enhance the corrosion resistance of the coatings. Adding SDS facilitates the formation of precipitates, resulting in hydrophobic coatings with poorer paint adhesion but better corrosion resistance.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Coatings & Films
Simin Wan, Xiufang Cui, Guo Jin, Jianjun Ma, Yuyun Yang, Kejing Liu, Jian Li, Shuo Wang, Junyan Wang
Summary: In this study, LC-Cu3Al, LC-Cu6Al, and LC-Cu9Al coatings were designed and prepared on Mg-Li alloy substrates to achieve excellent wear and corrosion properties. The results show that the LC-Cu6Al coating exhibits the best hardness, wear resistance, and corrosion resistance. Using laser cladding Cu-Al alloy coatings is an excellent strategy to enhance the surface properties of Mg-Li alloy.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Coatings & Films
Yuejun Ouyang, Zhifeng Huang, Rui Fang, Liang Wu, Qiwen Yong, Zhi-Hui Xie
Summary: A stable composite coating with good superhydrophobicity and corrosion resistance was successfully fabricated on magnesium alloy surface through chemical deposition and electrodeposition. The addition of SiO2 nanoparticles in the coating showed optimal superhydrophobic properties. Electrochemical tests indicated excellent corrosion protection of the composite coating.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Jiyuan Zhu, Chenxi Jia
Summary: This study presents a simple one-step in-situ growth process for preparing a composite coating of ammonium magnesium carbonate tetra-hydrate (AMCT) and calcium carbonate (CC) on AZ91D magnesium alloy. The coated samples exhibited good adhesion and significantly improved corrosion resistance in 3.5 wt% NaCl solution. The molar ratio of AC/CG and the reaction time were found to be crucial factors determining the coating formation.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Yong Cai, Hong Yan, Mingyu Zhu, Kai Zhang, Xuening Yi, Rongshi Chen
Summary: The study demonstrates that the high Gd content in alloys can enhance high-temperature oxidation resistance and corrosion resistance. The oxide film is composed of three layers with different compositions, showing improved performance with increasing Gd content.
Article
Metallurgy & Metallurgical Engineering
Tong Bu, Ruijie Jia, Tao Ying, Andrej Atrens, Pengbo Chen, Dajiang Zheng, Fuyong Cao
Summary: A novel coating on the Mg1Mn alloy was produced by anodic polarization combined with hydrothermal treatment (AP + H) in 0.1 M Na2CO3 solution. The coating consisting of MgCO3, Mg(OH)(2), and MgO provided satisfactory protection in 3.5 wt% NaCl, but showed increased corrosion rate after 72 hours. The failure of the coating was attributed to second phase particles or impurities in the matrix. The AP + H coating is considered suitable as a primer coating for Mg applications in kitchen ware, biomedical areas, or industry.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2023)
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.