BIOELECTROCHEMISTRY
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2025
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IF 4.5
Jiahao Sun,Shihang Lu,Ming Cheng,Nianting Xue,Shiqiang Chen,Guangzhou Liu,Yuanyuan Gao,Li Lai,Wenwen Dou
Microbiologically influenced corrosion (MIC) affects offshore production activities severely. Although adding biocides is a simple method, it can cause environmental damage over time. Using green biocide enhancers is a viable strategy to reduce the amount of biocides. In this study, four novel peptides, named Peptide T/Tc/Ts/Tcs, were designed by a natural peptide extracted from the Arctic sea squirt to enhance the efficacy of tetrakis hydroxymethyl phosphonium sulfate (THPS) in mitigating the biocorrosion of EH36 steel caused by Desulfovibrio ferrophilus . The combination of 40 ppm THPS and 100 nM Peptide T/Tc/Ts/Tcs reduced the corrosion rates of EH36 steel by 68 %, 71 %, 86 %, and 90 % after the 7-d incubation, respectively. Notably, 40 ppm THPS + 100 nM Peptide Ts/Tcs achieved similar antimicrobial and biocorrosion mitigation effects as 100 ppm THPS. It suggests that optimizing the cationic and hydrophobic properties of peptides could enhance the bactericidal properties of biocides.
研究领域:
材料科学
·
微生物学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Lizhen Li,Junbin Sun,Weihong Lu,Zhifeng Xu
Six multi-component rare earth phosphate materials were prepared by chemical co-precipitation, which are (La 0.2 Nd 0.2 Sm 0.2 Eu 0.2 Gd 0.2 )PO 4 , (La 0 · 2 Ce 0.2 Nd 0.2 Sm 0.2 Eu 0.2 )PO 4 , (Ce 0.2 Nd 0.2 Sm 0.2 Eu 0.2 Gd 0.2 )PO 4 , (La 0.5 Nd 0.5 )PO 4 , (La 0.5 Gd 0.5 )PO 4 and (Nd 0.5 Gd 0.5 )PO 4 . Hot corrosion behavior tests were conducted in molten V 2 O 5 salt at 900 °C and 1000 °C for 20 h and 40 h, respectively. The results show that the corrosion temperature and the heat treatment time have little effect on the type of corrosion products . Among these materials prepared in this study, the material containing Gd element and the material without Gd element exhibit different hot corrosion behavior . For the multi-component rare earth phosphate materials containing Gd element, the corrosion product is ReVO 4 (Re Sm, Eu, Gd) xenotime, and a reaction layer is formed on the surface of the bulk. For the multi-component rare earth phosphate materials without Gd element, the corrosion product is Re(P,V)O 4 (Re La, Ce, Nd) solid solution and the amount of product is very small, the corrosion reaction is extremely weak and no reaction layer is formed. Although the molten salt mainly penetrates, the original structure of the bulk has not been damaged, which indicates that its hot corrosion resistance is good. The hot corrosion mechanisms of these six multi-component rare earth phosphates are studied based on the crystallographic characteristics of rare earth phosphates/vanadates.
研究领域:
材料科学
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腐蚀科学
✓ 已验证
产品关联
DOI
高影响因子
Heliyon
·
2022
·
IF 3.776
Qi Zhang,Xueqin Zhang,Zhuang Ma,Ling Liu,Yanbo Liu,Wei Zheng
Thermal and environmental barrier coatings (TEBCs), an up-to-date concept, are introduced to protect silicon-based ceramic matrix composites (CMCs) from not only high-temperature water vapor but also alkali salts from volcanic ash and dust suspended in the atmosphere. Both high-temperature steam and CMAS will cause Si-based CMCs to deteriorate rapidly. By executing the corrosion test against high-temperature water vapor, we find that the Y 2 SiO 5 /Si double-layer TEBC can effectively protect SiC f /SiC CMCs from water vapor at 1300 °C for over 205 h. Almost all Y 2 SiO 5 transforms into Y 4.67 (SiO 4 ) 3 O after the corrosion test. It is also found that in the CMAS corrosion test, the reaction zone formed between the CMAS and Y 2 SiO 5 layers prevents the mutual diffusion of elements in the CMAS and Y 2 SiO 5 layers. The apparent activation energy of the reaction between CMAS and Y 2 SiO 5 in the 1200–1300 °C temperature range is calculated to be 713.749 kJ/mol. These findings provide a reference for selecting appropriate materials for TEBCs.
研究领域:
材料科学
·
高温腐蚀
✓ 已验证
DOI
高影响因子
Case Studies in Construction Materials
·
2025
·
IF 6.6
Jiandong Zuo,Sitao Luo,Biqin Dong,Guanqi Wei,Yanshuai Wang
Corrosion of steel in reinforced concrete usually occurs in marine environment. In this study, the fly ash-slag-based geopolymer coating of steel were modified by the epoxy emulsion (EP) as toughening agent. The influence of different EP contents on the interfacial properties of the coatings was investigated through adhesion test and scanning electron microscope (SEM) analysis. To evaluate the anti-corrosion behavior of the coatings, electrochemical measurement was conducted in five typical simulated solutions for three months. The anti-corrosion performance of the coatings was comprehensively assessed by considering the corrosion morphology and corrosion rate of the coated steel samples. The results demonstrated that the 5 % EP-modified geopolymer coating exhibited superior adhesion and corrosion resistance compared to the steel reinforcement. The rust inhibition mechanism of the modified geopolymer coating can be attributed to the dense structure of the geopolymer and the formation of Mg-Al LDH during the geopolymerization reaction.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2019
·
IF 3.192
Haowei Huang,Huihui Wang,Yuhui Xie,Dexuan Dong,Xiang Jiang,Xinya Zhang
To enhance corrosion resistance of zinc phosphate coatings on mild steel, boron nitride nanosheets (BNs) were introduced into zinc phosphating bath. The effects of BNs on the phase composition, surface morphology and corrosion resistance of phosphate coatings were investigated by varying the concentration of BNs (0.15–0.60 g/L) in the phosphating bath. Results show that the presence of BNs could effectively reduce the crystal sizes of phosphate crystals and thus make BN-incorporated phosphate coatings denser and finer than pure phosphate coatings. Moreover, BN-introduced phosphating bath yields heavier phosphate coatings (25.10 g·m −2 ). In the electrochemical corrosion measurements, BN-incorporated phosphate coatings display the corrosion current of 3.21 × 10 −6 A/cm 2 , which is one order of magnitude lower than the ones without BNs. Moreover, the time against corrosion of copper sulfate dropping prolongs to 328 s for BN-incorporated samples, which is an increase of 182.75% compared with pure ones.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
POLYMER
·
2018
·
IF 3.483
Jin Han,Cheng Chen,Qingquan Xue,Yaochen Zheng,Shu Tian,Zhixiong Liu,Jieze Shen,Mingqiang Zhong
A catalyst-free and thermal-induced S→O acetyl migration (SOAM) reaction was occasionally found and used to fabricate the polythiol corrosion inhibitor . The route to prepare the polythiols was free of catalyst and side products. Only intramolecular migration process existed, while intermolecular migration was not found. Temperature-dependent 1 H NMR experiment showed the conversion rate of the SOAM reaction was 83% at 160 °C. Further heating at higher temperature or for longer reaction time, the conversion rate did not increase. It was speculated that there was equilibrium between two reversible migrations. The prepared polythiol inhibitor contains a large amount of latent thiol groups after the SOAM reaction process. The strong Cu S bonds immediately formed and made the polythiol chains firmly anchored on the copper surface when the copper metal was coated with the polythiols. Also S S bond formation reaction leads to dense crosslinking and film formation. Raman spectrum and SEM were used to characterized the protective film. A smooth and defect-free film with thickness of 1.9 μm was achieved when the copper sample was immersed in the polythiol solution for 60 min. The corrosion performance of the film is obtained by potential and impedance measurements and Tafel curves by immersing in a 3.5 wt% NaCl solution. All of the coated samples exhibited significantly lower corrosion rates than the bare copper sample, and the corrosion rate decreased as the immersion time increased. The inhibtion efficiency of the polythiol inhibitor was up to 99.3%. Neutral salt spray experiments indicated that the polythiol films provided excellent protection for over one week. The polythiols were also very stable in storage and have application in designing various polyacrylate polythiols resins.
研究领域:
材料化学
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防腐蚀工程
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高分子化学
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
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2022
·
IF 6.206
Yanli Zhang,Yujie Qiang,Huangwei Ren,Jun Cao,Linjing Cui,Zhifang Zong,Depeng Chen,Tengfei Xiang
In this work, the corrosion inhibitor sodium D-gluconate (SD) was successfully loaded into halloysite nanotubes (HNTs). After that, SD-HNTs-A3@CS/SA smart nanocontainers, achieving controlled release properties of inhibitors, were prepared by the layer-by-layer (LbL) self-assembly method. The BET analysis found that the pore size inside the halloysite nanotubes increased after etching by 3 mol/L H 2 SO 4 . According to the TG results, the loading capacity of corrosion inhibitors increased to three times of the original HNTs. The pH-responsive properties of nanocontainers could be demonstrated by UV–Vis spectroscopy under acidic/basic conditions. Furthermore, SD-HNTs-A3@CS/SA nanoparticles were embedded in epoxy resin to fabricate a smart composite coating . When the SD-HNTs-A3@CS/SA content was 2 %, the composite coating exhibited superior anti-corrosion performance towards steel corrosion in concrete simulation solution (containing 3.5 wt% NaCl), with its impedance at 0.01 Hz maintaining 6.4 × 10 6 Ω·cm 2 even after 18d of corrosion immersion. In addition, the anti-corrosion mechanism of SD for steel matrix was investigated by molecular modeling methods. These findings provide new insights into the preparation of smart coatings, expecting a wide range of applications in the corrosion protection of steel and other metals in reinforced concrete environments.
研究领域:
材料科学
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化学工程
·
土木工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
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2022
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IF 10.383
Zhihao Chen,Xianliang Li,Bin Gong,Nico Scharnagl,Mikhail L. Zheludkevich,Hanjie Ying,Wenzhong Yang
Stimuli-responsive nanocapsules, which can respond to various environmental stimuli and release their encapsulated payload on demand, have attracted wide interest in different fields in recent years. In this work, a novel kind of polypyrrole (PPy) nanocapsules is fabricated and loaded with zinc salt corrosion inhibitors. The synthesized PPy nanocapsules respond to two different external stimuli (pH- and redox-responsive) and can control the release of their encapsulated corrosion inhibitors. The nanocapsules can detect the micro-environmental pH or surface-potential changes associated with the corrosion initiation of the metal substrate. When introduced into a protective epoxy coating, the fabricated PPy nanocapsules inhibit the anodic and cathodic corrosion reactions. The superior corrosion resistance and active corrosion protection effects of the epoxy-PPy-Zn coatings are further demonstrated via electrochemical and long-term immersion tests. The low-frequency impedance, coating resistance, and oxide film resistance increase after about 400 h of exposure in a 3.5 wt % NaCl solution, reflecting the enhanced corrosion protection properties and excellent repairing performance of the coating. Furthermore, the epoxy-PPy-Zn coating can avoid the pitting corrosion of 304 stainless steel. Overall, we have fabricated double stimuli-responsive PPy nanocapsules via a simple and effective strategy and incorporated them into a corrosion-resistant epoxy coating for protecting Fe-based metal substrates.
研究领域:
材料科学
·
化学工程
·
腐蚀与防护
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2022
·
IF 6.364
Ling Pan,Ling He,Zibo Niu,Peng Xiao,Wei Zhou,Yang Li
In this work, Yb 4 Hf 3 O 12 ceramic, a typical rare-earth hafnate, was exposed to water vapor with Al(OH) 3 impurities at 1400 ℃, and microstructural evolution and corrosion mechanisms were investigated. The long-term corrosion can be divided into initial hydration and gasification of Hf 4+ and steady-state corrosion after the formation of Al 5 Yb 3 O 12 . In the initial stage, Hf 4+ and the surrounding O 2- tend to be hydrated and then volatilized in the form of Hf(OH) 4 , causing a metastable state of Yb 4 Hf 3 O 12 on the surface. Besides, the preferential corrosion of small grains, grain boundary, and specific crystal plane on the surface and sintered and densified grains result in varied corrosion behavior from the early linear law to the later parabolic law. In the steady-state corrosion stage, due to the consumption of Hf 4+ , more vacancies promote bonding and diffusion of Al 3+ to form corrosion product (Al 5 Yb 3 O 12 ), and during this stage, regrowth and shedding of the corrosion layer reach a dynamic balance.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
CORROSION SCIENCE
·
2022
·
IF 7.72
Yanan Cui,Zhice Yang,Tao Zhang,Fuhui Wang
The inhibition mechanism of four inhibitors with different charge on Mg-Gd-Y alloy was investigated experimentally and theoretically. The different charge of inhibitor evoked the preferential adsorption behavior, changing the susceptibility of Mg-Gd-Y alloy to micro-galvanic corrosion. Moreover, the adsorption of inhibitor changed the surface energy of embryos of corrosion product, and strongly suppressed the nucleation rate of corrosion product, leading to poor protective performance. Thus, the inhibitor with anion, exhibiting satisfactory inhibition efficiency for AZ/AM series alloys, showed worse inhibition for the Mg-Gd-Y alloy. Finally, the strategy to select and/or synthesize inhibitors for Mg-RE alloys was presented.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2022
·
IF 4.865
Yumiao Jiang,Shuai Gao,Yingxue Liu,Huijie Huangfu,Xugeng Guo,Jinglai Zhang
Fabricating layered double hydroxides (LDHs) coatings intercalated with corrosion inhibitors is considered an effective strategy for improving the corrosion resistance of metal substrates. However, to our best knowledge, studies applying LDHs coatings modified with ionic liquids (ILs) as environmentally friendly corrosion inhibitors to corrosion protection of metals and alloys have not been reported. In this contribution, two kinds of MgAl-LDHs coatings modified with imidazolium based dicationic ILs, namely LDH-C 6 (m 2 im) 2 -I and IL@LDH-C 6 (m 2 im) 2 -I, were successfully prepared on AZ31B magnesium alloy . The LDH-C 6 (m 2 im) 2 -I coating intercalated with C 6 (m 2 im) 2 -I ionic liquid was synthesized by the co-precipitation method and hydrothermal treatment , followed by a facile immersion experiment in a dimethyl sulfoxide solution containing C 6 (m 2 im) 2 -PF 6 ionic liquid to produce the IL@LDH-C 6 (m 2 im) 2 -I composite coating . The surface morphologies and anti-corrosion properties of the two MgAl-LDHs coatings immersed in 3.5 wt% NaCl solution were investigated. The present results reveal that the LDH-C 6 (m 2 im) 2 -I coating exhibits a uniform and dense petal-like nanoflowers structure, while the IL@LDH-C 6 (m 2 im) 2 -I composite coating contains a compact C 6 (m 2 im) 2 -PF 6 IL film and a lamellar-structured LDH-C 6 (m 2 im) 2 -I, which provides a double corrosion protection to the Mg alloy. As a result, the corrosion current density of IL@LDH-C 6 (m 2 im) 2 -I is only thirty-eighth of that of LDH-C 6 (m 2 im) 2 -I and 4 orders of magnitude lower than that of bare AZ31B Mg alloy. More importantly, the surface of samples coated with IL@LDH-C 6 (m 2 im) 2 -I is still compact without being destroyed after 168 h of immersion, which can be ascribed to the synergistic effect of excellent self-healing and durable corrosion resistance. This work opens a new way of preparing MgAl-LDHs coatings modified with ionic liquids to remarkably enhance the anti-corrosion performance of Mg alloys.
研究领域:
材料科学
·
腐蚀工程
·
表面工程
·
化学工程
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Zeyu Huang,Hao Li,Yuhua Xiao,Qinhao Zhang,Pan Liu,Liankui Wu,Fahe Cao
Ensuring the long-term durability and safety of galvanized steel structures in industrial and environmental applications requires a deep understanding of their corrosion resistance, particularly at defects such as cut edges and scratches. These sites often initiate localized corrosion due to micro-environmental inhomogeneities. This study investigates the dynamic corrosion behavior of galvanized Zn/Q235 steel couples by integrating macro-electrochemical testing with in-situ high-resolution scanning electrochemical microscopy (SECM) to reveal the underlying interfacial physicochemical mechanisms. While macro-electrochemical measurements indicated significant passivation, with the corrosion current density decreasing by over an order of magnitude to 1.00 × 10⁻ 6 A·cm⁻ 2 after 24 h, micro-scale SECM mapping revealed a more complex mechanism. As corrosion progressed, oxygen reduction reactions became increasingly concentrated at the Zn/Q235 interface, where localized pH stabilized near 8. This remarkable pH buffering is attributed to the continuous precipitation of zinc corrosion products, an interfacial process that consumes both Zn 2+ and OH⁻ to form a passivating layer. At simulated scratch defects, an initially aggressive galvanic coupling with steep pH gradients was gradually suppressed as these precipitates formed, demonstrating a self-passivation effect. These findings elucidate a locally driven, interfacial chemical buffering mechanism, governed by precipitate formation, that controls passive film development and slows degradation. The results establish direct links between interfacial pH regulation, corrosion-product formation, and self-passivation at defects, advancing the interface science underpinning environmentally resilient galvanized coatings.
研究领域:
腐蚀科学
·
电化学
·
材料科学
·
表面化学
·
材料环境退化
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）