Polymers
·
2021
·Vol. 13
·期 13
·2072
·
IF 4.329
Xiaoyan Liu,Ruidan Liu,Tianyu Li,Yanqi Liu,Li Liu,Kai Lyu,Surendra P. Shah
Graphene is a two-dimensional sheet of regular hexagonal honeycomb lattice formed by sp2hybrid orbital bonding, with only one layer thickness of a single atom, which is known as the “super king” of the 21st century. Previous studies have shown that cerium oxide-graphene oxide (CeO2-GO(4:1)) nanocomposites eliminated the agglomeration of graphene to some extent and the CeO2-GO(4:1) epoxy coating could be prepared with good anti-corrosion performance. In this paper, CeO2-GO(4:1) nanocomposites were prepared by the hydrothermal synthesis method, and the three-electrode method was used for electrochemical tests. The state evolution of CeO2-GO(4:1)/EP coating and the synergy between CeO2-GO(4:1)/EP and corrosion inhibitor in simulated seawater solution with different concentrations (20%, 40%, 60%) were analyzed and illustrated by Optical Microscope (OM) characterization, Open Circuit Potential (OCP), Electrochemical alternating current Impedance Spectroscopy (EIS), Mott–Schottky curve and Tafel curve. The results indicated that CeO2-GO(4:1) nanocomposites showed good corrosion resistance in a marine environment. This research lays a solid theoretical foundation for the application of cerium oxide-modified graphene oxide anticorrosive coating in marine engineering.Keywords:CeO2-GO;corrosion inhibitor;simulated seawater;corrosion area
研究领域:
材料科学
·
海洋工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Rui Gou,Yong Li,Qilong Chen,Sha Wang,Dan Sun,Changhua Li,Xianmin Gong,Yi He
Metal corrosion causes a lot of waste of resources, and the protection of metals from corrosion is becoming increasingly important. In this study, zeolite-imidazole (ZIF-67) was grown on the surface of Co-MOF for the first time by a one-step (complexation) method. 2-Mercaptobenzimidazole (MBI) was then loaded into the inner cavity of ZIF-67, resulting in the formation of a new composite material, Co-MOF@ZIF-67@MBI. The modified Co-MOF exhibits excellent interfacial compatibility with the water-based epoxy resin, and the Co-MOF@ZIF-67@MBI composite coating demonstrates robust anti-corrosion properties. Following a 60-day immersion period, the electrochemical experiment demonstrated that the corrosion resistance modulus of the Co-MOF@ZIF-67@MBI composite coating reached 10 8 Ω cm², indicating that the coating effectively enhanced the corrosion resistance of the coating and significantly extended the service life of the coating.
研究领域:
材料科学
·
腐蚀与防护
·
复合材料
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2020
·
IF 3.99
Yujuan Jing,Pingquan Wang,Qiangbin Yang,Qiurun Wang,Yang Bai
Faced with severe corrosion of casing in oil wells, the epoxy coating was applied to prevent corrosion. Based on the mechanism that the filler eliminated the internal stress during the curing process of the coating and prevented the penetration of corrosive medium into the coating, a new filler was successfully prepared by the hydrothermal method . When the molar ratio of the precursor of ZrO 2 to MoS 2 was 1.2:1, MoS 2 was uniformly modified with ZrO 2 through mussel inspired chemistry of dopamine. Introducing fillers into epoxy coatings, specifically, a proper content of 0.8 wt.% filler can greatly improve the mechanical properties and corrosion resistance of the coatings. The coating maintained the excellent corrosion resistance for 16 h under high temperature (108 °C) and high pressure (pressurized with CO 2 gas of 35 MPa), which would provide us a reliable anticorrosive coating for oil wells metal casing.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2023
·
IF 6.1
Tao Zhu,Yuan Yuan,Qi Yu,Huiying Xiang,Xu Dai,Guoyong Liu,Ruijin Liao
The overhead aluminum conductors are prone to corrosion, especially in areas with marine climates, which interferes with the safe operation of the power system. Herein, slippery liquid infused porous surface (SLIPS) conductors were successfully prepared on pure aluminum (Bare) conductors by anodizing and infusion of silicone oil. The corrosion resistance of the conductors during 30 days of salt spray corrosion and 7 days of energized conditions was studied. The results indicated that the corrosion of the Bare and anodic aluminum oxide (AAO) conductors was more severe under energized (alternating current (AC) and direct current (DC)) conditions. The exacerbation of corrosion by DC energization was remarkably higher than that of AC energization. The AAO conductor showed better corrosion resistance than the Bare conductor, which was attributed to the porous alumina retarding the medium intrusion. Due to the barrier effect provided by the lubricant layer, the SLIPS conductor always presented excellent corrosion resistance than the Bare and AAO conductors. In addition, the mechanical and electrical properties of the SLIPS conductor were comparable to the Bare conductor and could satisfy the basic requirements for practical applications. The prepared SLIPS conductors offer great application prospects for the corrosion protection of aluminum conductors.
研究领域:
材料科学
·
电气工程
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Yong Lu,Huixia Feng
Phytic acid (PA) has a potential use as a coating on metal surface to retard corrosion. However, a loose structure and micro-cracks in the phytic acid coating layer damage the tightness of the coating, providing channels for the infiltration of corrosive media and seriously weakening the protective effect of the coating. Sodium alginate (SA) was added as an accelerating agent to improve the anti-corrosion protective effect and coating densification of the phytic acid coating on a Q235 steel surface. The micro-morphology, elemental composition and elemental chemical state of different samples were observed by the surface analysis technologies of scanning electron microscopy (SEM) equipped with X-ray energy dispersive spectrum (EDS) and X-ray photoelectron spectroscopy (XPS), all of which show a dense and homogenous phytic acid film with lower crack was precipitated on the sample treated by PA-SA conversion coating. Atomic force microscopy (AFM) and contact angle measurements were used to evaluate the adhesion properties of the prepared coating and the results showed that the PA-SA coated steel exhibited better wettability and adhesion to the top layers compared to the bare steel and phytic acid coating. The electrochemical measurements show that the corrosion resistance of the conversion coating was markedly improved on the steel substrate treated by phytic acid conversion bath containing SA.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
DOI
高影响因子
Journal of Materials Research and Technology-JMR&T
·
2023
·
IF 6.4
Yanwei Zeng,Liu Yang,Guoqiang Liu,Yichao Guo,Bing Lei,Zhiyuan Feng,Honglei Guo,Ping Zhang,Guozhe Meng
Steel rebars with oxide scale, which is usually rich of defects, are widely used in industry. On the surface of the oxide scale, it is difficult to prepare a conversion film with desirable corrosion resistance because of the acidity of conventional conversion solutions. In this work, a sol–gel solution (pH = 11) was employed to retard the diffusion of cerium ions avoiding the formation of cerium salt precipitates at room temperature. After treatments, the diffusion of cerium ions would be accelerated and a protective conversion film would form to repair natural defects on oxide scale of steel rebars at a higher temperature. This strategy can not only avoid the peeling of the oxide scale by the acid solution, but also prevent a large amount of non-uniform precipitation of the film-forming Ce 3+ ions. The conversion film@oxide scale was characterized by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), electrochemical impedance spectroscopy (EIS), potentiodynamic polarization curve (PPC) etc. It is found that the corrosion resistance of the prepared film@oxide scale was enhanced greatly when the concentration of added cerium ion (III) was 0.5 M, with pH adjusted to 11. After 30 days of immersion, R ct of surface treated rebar is more 180 times that of blank sample. The excellent corrosion resistance is closely related to the double-layer structure of the prepared sol-gel film, especially an about 2 nm inner layer of cerium oxide.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2022
·
IF 6.206
Mengyu Zhou,Zhiming Ha,Lei Lei,Yuzheng Xia,Peng Mao,Xiaonong Chen,Bifa Fan,Shuxian Shi
Polymeric coating technology provides a cost-effective and convenient solution for the surface pollution and corrosion issues on various substrates. Herein, a series of transparent and omniphobic bio-based polyurethane (PU) coatings with high hardness, excellent anti-smudge and anti-corrosion properties were prepared by using castor oil as bio-polyol, hexamethylene diisocyanate trimer (HDIT) as a cross-linking agent, and a small amount of monocarbinol terminated polydimethylsiloxane (PDMS-OH) as an eco-friendly anti-fouling agent. Effects of the R-value (mole ratio of isocyanate groups to hydroxyl groups) and dosage of PDMS-OH (wt%) on the PU-PDMS coating's hardness, surface wettability , anti-smudge and anti-corrosion performance have been thoroughly investigated. It was found that the higher R-value led to increased coating hardness. The element content of silicon on the coating surface was confirmed to be higher than the theoretical value since the grafted PDMS chains partially enriched from the inner matrix to the coating surface for reducing overall surface energy. Various simulated water-based contaminants could quickly slide off from the coating surface without leaving any traces. Writing traces of oil-based marker could be shrunk immediately after writing and wiped clean from coating surface completely. Such anti-smudge properties could be maintained even after 1000 cycles of polishing. Moreover, the anti-corrosion performance of these PU-PDMS coatings has been investigated through electrochemical tests. The capacitance circular arc radius of PU 1.5 -PDMS 4.0 is 10 times of tinplate and 4 times of PU 1.5 , indicating the obtained coatings could offer better corrosion protection for tinplate than the regular PU coatings. This work would broaden the polyurethane application in omniphobic anticorrosion coatings.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
ANTI-CORROSION METHODS AND MATERIALS
·
2023
·Vol. 70
·期 3
·129-138
·
IF 1.2
Jiao Li,Tianshu Li,Jodie A. Yuwono,Guozhe Meng,Zhiyuan Feng
Purpose This study aims to develop a sol-gel-based coating to provide a long-lasting corrosion protection on AZ31 Mg alloy. Silane-based sol-gel coatings have been successfully applied to Mg alloys for corrosion protection. However, the micro or nano defects formed during condensation and solidification will cause the coating failure during a long-lasting immersion in a saline solution. More durable corrosion-protective sol-gel coatings are needed. Design/methodology/approach A sol-gel-based coating was modified on AZ31 Mg alloy by levodopa (DOPA). The long-lasting corrosion protection mechanism was studied by multiple electrochemical testing methods and surface characterization techniques. Findings Long-term testing by electrochemical impedance spectroscopy in aqueous 0.1 M NaCl indicated that the modified DOPA@sol-gel coating exhibited significant corrosion protection performance (>14 days). In comparison, the DOPA-free sol-gel coating failed only after three days of testing. The improved corrosion protection is attributed to the self-polymerized DOPA filling to the micro or nano defects in the glassy cross-linked networks of the sol-gel coating, which greatly improves the compactness of the coating. Originality/value The method of this study is simple and easy to process, the raw materials are green and the protective effect is excellent, which is of significance for the study of magnesium alloy corrosion protection.
研究领域:
材料科学
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腐蚀与防护
·
生物医学工程
✓ 已验证
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Dongchen Zheng,Qianyun Tan,Guangyu Zhu,Gege Zhang,Lixiang Yang,Zhongyi He,Tao Zhang,Fa-Qian Liu
Aiming at the problems of poor toughness, insufficient mechanical properties and bad long-term anticorrosion effect of epoxy resin coatings, a series of chemically cross-linked composite epoxy coatings were prepared in this work. The composite coating is formed by chemical bonding of aminated SiO 2 @TiO 2 particles, carboxylate-blocked hyperbranched polyester (HBPE-COOH) and TDI-modified E44 epoxy (TDI-E44). HBPE-COOH has a wealth of active sites and soft chain segments, which as an intermediate linker not only improves the bonding efficiency of the inorganic filler and the organic coating network, but also increases the flexibility of the composite coating. The adhesion strength of composite coating to the metal substrate is as high as 18.52 MPa, which ensures coating will not come off under seawater washing. The impact strength of the coating was 78 Kg·cm and no breakage occurred even when the coatings were curled on a 1 mm rod. The composite coating exhibits excellent corrosion resistance, and its impedance value remains above 1.0 × 10 9 Ω·cm 2 after 720 h of immersion in seawater, which is three orders of magnitude higher than that of the conventional epoxy resin. This high-density structure through chemical cross-linking makes epoxy resins as superior anti-corrosion coatings for marine applications.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Junfeng Chen,Wenjie Zhao
The complex and harsh deep sea environment is the main reason for the failure of the protective coating of marine equipment. However, excellent protective coating is the key to prolong the service life of the equipment under deep sea environment. Ti 3 C 2 T X , with high aspect ratio, abundant surface functional groups and excellent mechanical properties, is the suitable candidate nanofiller for coating reinforcement. Herein, we synthesized a novel silk fibroin-Ti 3 C 2 T X (SF-Ti 3 C 2 T X ) hybrid nanofiller as reinforced-additives for improving the anti-corrosion ability of waterborne epoxy coating. Due to the rough surface of SF-Ti 3 C 2 T X nanosheets, they have excellent compatibility with the resin matrix and could fill the inherent defects of the coating. The anticorrosion behaviors of as-prepared composite coatings under both of atmospheric pressure and simulated deep sea environment were investigated in detail. Particularly, the composite coating with 0.5 wt% SF-Ti 3 C 2 T X sheets showed outstanding corrosion protection (impedance value remained 1.31 × 10 8 Ω⋅cm 2 , four orders of magnitude higher than pure EP) after 240 h immersion under 20 MPa hydrostatic pressure. In addition, the interface of coating/steel was not damaged and the coating remained the favorable adhesion strength (3.16 MPa, but that of pure EP only 0.88 MPa) even in the harsh high hydrostatic pressure. Based on the experiment data, we discussed and analyzed the failure process of coatings and explained the corrosion protection mechanism of SF-Ti 3 C 2 T X hybrid under simulated deep sea environment.
研究领域:
材料科学
·
海洋工程
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2017
·
IF 6.216
Mingjun Cui,Siming Ren,Haichao Zhao,Qunji Xue,Liping Wang
This study reports an eco-friendly water-borne epoxy (EP) with enhanced corrosion protection performance by embedding graphene oxide (GO). For this purpose, the dispersion of the GO in ethanol is improved by modifying the GO nanosheets with hydrophilic dopamine (DA), owing to the π-π interactions between the GO and self-polymerized polydopamine (PDA) as well as the covalent bonding between DA and GO. Results obtained from transmittance electron microscopy (TEM), scanning probe microscopy (SPM) Fourier transform infrared (FT-IR) spectroscopy, Raman spectroscopy, UV–vis absorbance spectroscopy and X-ray photoelectron spectroscopy (XPS) reveal the successful modification of PDA on the surface of GO nanosheets. Besides, the GO/EP and GO-PDA/EP coatings are applied on the steel substrates and their corrosion protection performance is investigated via electrochemical measurements, scanning electron microscopy (SEM) and scanning vibration electrochemical technology (SVET). Results demonstrate that inclusion of well-dispersed GO-PDA nanosheets leads to the remarkable improvement in the corrosion protection performance of water-borne EP coating.
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
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Yang Han,Xude Qin,Qianqian Kang,Weijie Fan,Dongxiao Han,Yantong Pei,Ye Chen,Wei Wang
Self-healing coating technology is an emerging strategy for extending the longevity of anticorrosion coating. Nevertheless, a significant challenge lies in ensuring that the coating can endure multiple cycles in intricate environments while sustaining a stable mechanical performance. In this study, we prepared a TiO2/Ti3C2Tx/PDMS elastomer coating by incorporating Ti3C2Tx nanosheets to improve mechanical properties and enhance physical barrier performance through photografting. Compared to PDMS without TiO2/Ti3C2Tx, the tensile strength increased from 10.32 to 16.24 MPa. Even after undergoing multiple loading–unloading cycles, the elastomer retained 88.98% of its initial strength, demonstrating remarkable durability and self-healing capabilities. Due to the presence of dynamic disulfide bonds, the coating can undergo a self-healing process within 30 min under 60 °C heating conditions. Furthermore, the presence of TiO2/Ti3C2Tx modified through photografting enhanced hydrophobicity and formed a micro/nanolayered “maze effect” structure, establishing a passive anticorrosion mechanism. This structure demonstrated sustained corrosion resistance for up to 50 days in aggressive environments, effectively preventing the corrosive medium from compromising the metal substrate.
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
危险品化学品经营许可证（带存储）