ACS Applied Materials & Interfaces
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2023
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IF 9.5
Lu Pengpeng,Fu Xue,Li Xin,Xu Li,Yong Fan,Jie Zhao,Limei Tian,Jiyu Sun,Luquan Ren
An anticorrosive coating with randomly distributed passive barriers and regionally enriched active corrosion inhibitors is developed by integrating mica nanosheets (MNSs) and magnetic-responsive core–shell mesoporous nanoparticles with 2-mercaptobenzothiazole (Fe3O4@mSiO2/MBT) under magnetic field incubation. The bottom enriched Fe3O4@mSiO2/MBT rapidly releases the MBT to form a passivation layer on corrosion sites, enhancing the corrosion inhibition efficiency by 30.36% compared with the control (NP0.7EP-R). The impedance modulus |Z|0.01 Hz of the sample (NP0.7/MNS0.5/EP) increases by five orders of magnitude compared with that of its control (NP0.7/MNS0EP) after 30 days of corrosion immersion. NP0.7/MNS0.5/EP exhibited the lowest corrosion rate (3.984 × 10–5 mm/year) as compared to the other samples. Notably, the coating in a fractured state still maintains superior corrosion inhibition even after 40 day salt spray testing. The differentiated distribution of nanofillers was well confirmed by optical microscopy and SEM-EDS, and the synergistic effect of the active/passive integrated anticorrosive coating with merits of both comprehensive protection and fast responsiveness was systematically explored.
研究领域:
材料科学
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腐蚀与防护
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纳米技术
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Yujie Qiang,Boyuan Ran,Minjiao Li,Qian Xu,Jian Peng
MXene flakes shows the great potential in corrosion protection area owing to their lamellar structure and remarkable mechanical features. However, these flakes are highly susceptible to oxidation, which results in their structure degradation and restrict their application in anti-corrosion field. Herein, graphene oxide (GO) was used to functionalize Ti 3 C 2 T x MXene through Ti O C bonding to fabricate GO-Ti 3 C 2 T x nanosheets, which proved by Raman, X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared spectroscopy (FT-IR). GO-Ti 3 C 2 T x nanosheet inclusion into the epoxy coating and their corrosion performance in 3.5 wt.% NaCl solution with 5 MPa pressure was evaluated through electrochemical techniques including open circuit potential (OCP) and electrochemical impedance spectroscopy (EIS) along with salt spray. Results indicated that GO-Ti 3 C 2 T x /EP presented superior anti-corrosion capability, the impedance modulus at low frequency (|Z| 0.01 Hz ) was above 10 8 Ω cm 2 after 8 days’ immersion in 5 MPa environment, which was 2 orders of magnitude higher than that of the pure epoxy coating. Scanning electron microscope (SEM) and salt spray images demonstrated that the epoxy coating loaded with GO-Ti 3 C 2 T x nanosheet could provide robust corrosion protection for Q235 steel via the physical barrier effect.
研究领域:
材料科学
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腐蚀与防护
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表面工程
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产品关联
DOI
PubMed
高影响因子
COMPOSITES PART B-ENGINEERING
·
2023
·
IF 13.1
Ziheng Bai,Shan Meng,Yexiang Cui,Yue Sun,Luchao Pei,Haodong Hu,Yuanxu Jiang,Huaiyuan Wang
Traditional single-function anticorrosion coatings have been unable to meet the needs for long-term protection in harsh marine environments. Therefore, developing excellent multifunctional protection coatings is essential for prolonging the service life of marine industry materials. Herein, a stable multifunctional linkage anticorrosion composite coating SC/SFPani@Zn was successfully constructed by loading the magic box (SFPani: fluorinated polyaniline doped with p-toluenesulfonic acid) and active factor (Zn 2+ ) onto the surface of sericite (SC). The SC sheet weakens the easy self-agglomeration problem of polyaniline, improves the interfacial compatibility between the filler and the resin matrix , and enhances the barrier properties of the coating. More importantly, the functional role of “magic box” and “active factor” not only enhance the shielding performance of the coating but also endows the coating with good corrosion inhibition performance and functional response protection. The 3D hydrophobic network and multifunctional linkage protection system gives the SC/SFPani@Zn coating excellent long-term corrosion resistance in harsh seawater as compared to conventional epoxy coatings . Therefore, it is believed that this work not only reflects the application potential of SC/SFPani@Zn as long-term anticorrosive material but also provides a new idea for the design of protective coatings for marine building materials .
研究领域:
材料科学
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海洋工程
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产品关联
DOI
高影响因子
MATERIALS LETTERS
·
2023
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IF 3
Daixiong Zhang,Lin Zhuo,Qing Xiang
Polytetrafluoroethylene (PTFE) is known as the ‘king of plastics’ because of its excellent resistance for both acid and alkali medium, so the coatings composed of PTFE have an attractive application prospect in the field of corrosion protection. In this work, with a solvent of ethanol containing 0.05 g·L −1 PEI + 0.1 mM nitric acid as the dispersion system, the PTFE coatings were successfully prepared onto the Mg-3Al-1Zn (AZ31) alloy sheets by electrophoretic deposition (EPD) strategy. The morphology of the electrophoretic PTFE coating was further reshaped through a sintering post-treatment at 380 °C in argon atmosphere. In 3.5 wt% NaCl solution, the corrosion current density was remarkably reduced (3.92 × 10 −6 A·cm −2 for the bare AZ31 vs 1.54 × 10 −9 A·cm −2 for the sintered PTFE coating AZ31), and the charge transfer resistance was significant increased (299.92 Ω·cm 2 for the bare AZ31 vs 2.79 × 10 6 Ω·cm 2 for the sintered PTFE coating AZ31), which means the electrophoretic-sintered PTFE coating can significantly improve the corrosion resistance of AZ31 alloys. Moreover, it is also suggested that the electrophoretic-sintered PTFE coating may be a general anti-corrosion strategy for a series of metal materials.
研究领域:
材料科学
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腐蚀与防护
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表面工程
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2023
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IF 6.6
Weibin Bai,Xu Zhang,Zhencheng He,Yao Qian,Rongkun Jian,Yucai Lin,Yanlian Xu
The incalculable metal corrosion loss makes the research of long-term corrosion resistant coatings attract much attention. Herein, we demonstrated a new strategy for constructing a pH-responsive nanocontainer as a gatekeeper, which consisted of a laminated double hydroxide (LDH) surface in situ grown ZIF-8 containing the corrosion inhibitor of 2-mercaptobenzimidazole (MBM). The shell-core structures of the composite fillers displayed the excellent barrier performance and pH-responsive controlled release properties in epoxy (EP) coatings. Electrochemical impedance spectroscopy and salt spray tests were conducted to investigate the multifunctional role in providing an intelligent anti-corrosion MBM@ZIF-8@LDH/EP composite coating . After immersing in salt solution (3.5 wt%) for 30 days, the impedance value of the MBM@ZIF-8@LDH/EP coating at 0.01 Hz (|Z| 0.01 Hz ) was 2.82 × 10 8 Ω∙cm 2 , which was about four orders of magnitude higher than that of the epoxy coating (1.54 × 10 4 Ω∙cm 2 ). The outstanding corrosion protection of MBM@ZIF-8@LDH was attributed to not only the compactness improvement of the composite coating, but also the anion exchange capability to act as a storage station for chloride ions. Meanwhile, the active filler could be used as a pH-responsive nanocontainer to release the loaded corrosion inhibitor of MBM and prevented further damage to the steel substrate, displaying a self-healing behavior. This strategy provides a new idea to combine perfect barrier effect and active anti-corrosion performance to prepare high-performance anti-corrosion and self-healing coatings. The multi-protective smart anti-corrosive coating would be a candidate with excellent performance for use in a variety of fields.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
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2020
·Vol. 56
·期 1
·337-350
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IF 3.553
Ning Yu-Jie,Zhu Ze-Ru,Cao Wei-Wei,Wu Lei,Jing Li-Chao,Wang Tao,Yuan Xiao-Tong,Teng Ling-Hong,Bin Peng-Shuai,Geng Hong-Zhang
The research and preparation of excellent anti-corrosion coatings is still a difficult task and critical to practical applications. In this paper, phosphoric acid, dodecylbenzenesulfonic acid (DBSA), and polyaniline (PANI) were polymerized in-situ onto graphene oxide (GO) by the one-pot method to prepare dodecylbenzenesulfonic acid-PANI/phosphorylated graphene oxide (DPPGO). The results of TEM, FTIR, Raman spectrum, XRD, TGA, and XPS analysis showed that the DPPGO was successfully prepared. The SEM observations showed that DPPGO has best dispersibility and compatibility than GO and PANI/phosphorylated graphene oxide (PPGO) in waterborne polyurethane (WPU) matrix. To achieve anti-corrosion performance, a new type of graphene-based polymer nanocomposites water-based coating was developed and tested by electrochemical measurements. Through a series of electrochemical tests, it is concluded that the anti-corrosion performance of a composite coating DPPGO is significantly improved. The excellent anti-corrosion properties are due to the perfect dispersion and good compatibility of DPPGO in WPU.
研究领域:
材料科学
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化学工程
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表面工程
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
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2024
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IF 8.3
Yan Song,Xuhui Wang,Junjie Tang,Guo Liang Li
An ideal microcapsule effectively preserves an active substance and can rapidly release it to elicit a self-healing anticorrosion effect. However, the development of highly efficient microcapsules remains a challenge. In this study, polymer/metal–organic framework hybrid microcapsules with dynamic properties were constructed as self-healing anticorrosion coatings. The shell of the microcapsule consisted of flexible polydopamine and a hard crystalline zeolitic imidazolate framework-8 (ZIF-8) layer. The corrosion inhibitor 8-hydroxyquinoline (8-HQ) was trapped in the microcapsules and remained unreleased because the ZIF-8 layer acted as a molecular sieve. When the coating was surrounded by an acidic environment, the ZIF-8 nanocrystals in the shell dissociated, followed by the release of 8-HQ. A dense protective layer was formed on the steel surface to suppress extensive corrosion propagation. The |Z|0.01Hz value of the self-healing coating increased from 1.9 × 104 Ω cm2 to 2.2 × 106 Ω cm2 within 48 h and remained at this level until 120 h post application. This value is 3 orders of magnitude higher than that of a pure epoxy coating under the same conditions. Compared with conventional coatings, the novel dynamic microcapsules enable the application of self-healing coatings that can withstand harsh acidic environments without human intervention.
研究领域:
材料科学
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腐蚀与防护
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2024
·Vol. 59
·期 45
·21129-21143
·
IF 3.5
Li Qiaoyin,Ma Aijie,Chen Yuming,Zhang Qiao,Wang Wei,Liu Haoqiang,Zhao Weifeng,Zhou Hongwei
The corrosion problem of metals has caused significant economic losses and safety risks in industrial production. Therefore, it is imperative to take measures to against corrosion. This study develops a new type of hyperbranched epoxy resin for anticorrosive coatings that contain catechol groups similar to mussels. The anticorrosive epoxy coating exhibits extremely high hardness and strength, outstanding thermal stability, excellent adhesion, as well as remarkable resistance to water and salt spray. The results of mechanical test showed that the tensile strength of the coatings could achieve as high as 63 MPa and their pencil hardness reached 8 H. After 30 days of immersion in saltwater, the pencil hardness could still keep 6 H, respectively. Furthermore, compared with the HBEP coating, the PCA-modified coating exposed to salt spray environment for 30 days shows less corrosion on both its surface and scratch area. This new type of coating has tremendous potential applications in areas such as marine metal protection. Graphical abstract
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Qingsong Zhu,Xinyu Lei,Xiaoqin Zha,Saad Melhi,Juanna Ren,Ben Bin Xu,Siyu Hao,Baoji Miao,Huitan Fu,Mohammed A. Amin,Zeinhom M. El-Bahy,Zhanhu Guo
2D MXene can prevent the penetration of corrosive media and can contribute to the improvement of corrosion resistance performance. However, achieving its uniform dispersion in the polymer matrix is challenging due to its large specific surface area and rapid aggregation. In this study, stable dispersion of polydopamine functionalized Ti 3 C 2 MXene (PDA-TM) hybrid in the waterborne epoxy (WEP) matrix was achieved via in-situ polymerization of the PDA layer on the surface of TM. The Fourier-transform infrared (FTIR) spectrum of PDA-TM showed the blue shift of O-H bond at 3438 cm −1 and the Ti-O bond of TM at 612 cm −1 . The characteristic peak of PDA-TM in the XRD pattern appeared at 2θ = 3.9° and the PDA bulge became smaller. Both proved the successful synthesis of PDA and TM. The surface wrinkles of the PDA-TM of SEM became more pronounced, and the smooth surface became rougher. This was due to the in-situ polymerization of DA on the surface of TM, which was conducive to avoid tight stacking of TM and expand its interlayer spacing. In addition, The WEP nanocomposite coating showed high impact resistance, strong adhesion, flexibility, and wear resistance. Moreover, PDA-TM decreased the glass transition temperature of WEP from 128.0 to 95.4 °C and improved the reflection loss for electromagnetic wave absorption properties. Furthermore, the |Z| 0.01Hz value of the PDA-TM 0.5 % (6.072 × 10 5 Ω cm 2 ) coating was approximately 6 times higher compared to that of the WEP coating after 30-d immersion in 3.5 wt% NaCl solution. The friction coefficient was also a quarter of neat WEP. This indicated that embedding a small amount of PDA functionalized TM nanosheets into WEP coating could improve obviously the corrosion resistance and wear resistance properties. The present research will provide a theoretical basis for the use of TM in the field of anticorrosion and electromagnetic wave absorption.
研究领域:
材料科学
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化学工程
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Pengao Yu,Zongxue Yu,Yuchi Guo,Kexi Liao,Kun Li,Shuangshuang Xia,Yulong Song
In this paper, a self-healing superhydrophobic smart two-layer coating, ZOA/SMP-S, was developed. ZIF-8 was surface hydrophobically modified by octadecylphosphoric acid (OPA) to obtain Z-OPA and then encapsulated with a corrosion inhibitor, AMT ( 2-Amino-5-mercapto-1,3,4-thiadiazole), to obtain the superhydrophobic nanocontainers, ZOA. ZOA was embedded into the SMP (shape memory coating) to obtain the smart coating, and Z-OPA was sprayed to obtain the second superhydrophobic coating. SEM showed that the scratch coatings were rapidly reduced by scratches after a simple heat treatment. The prepared composite coatings showed excellent performance in corrosion inhibitor release, immersion, superhydrophobicity, and self-healing experiments. The contact angle of the superhydrophobic coating reached 158.2°, and the sliding angle was 2.8°. The low-frequency impedance value |Z|f=0.01 Hz of ZOA/SMP-S is as high as 1.58 × 1010 Ω·cm2 after 40 days of immersion test, which indicates that the triple protection greatly enhances the corrosion resistance of the coating.
研究领域:
材料科学
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腐蚀与防护
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表面工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Acta Metallurgica Sinica-English Letters
·
2024
·Vol. 37
·期 10
·1793-1808
·
IF 2.9
Guo Yichao,Jia Tianyue,Tan Jingsha,Zhang Bo,Guo Honglei,Feng Zhiyuan,Lei Bing,Zhang Ping,Meng Guozhe
In this study, basalt scales were activated by air plasma and were subsequently deposited with cerium dioxide nanoparticles to obtain CeO 2 -modified basalts (CB). Inspired by mussel biomimetics, polydopamine (PDA) and 3-glycidoxypropyltrimethoxysilane were further employed to modify the properties of CB to obtain functionalized basalt scales (CBD). This treatment greatly increased the interfacial compatibility between inorganic fillers and epoxy resin. At the same time, PDA can form chelates with iron ions in the anodic area to prevent further corrosion. Tensile, water absorption, and electrochemical impedance spectrum measurements showed that incorporating CBD into epoxy resins resulted in the composite coatings with higher mechanical properties, water penetration resistance, corrosion resistance, and lower wetting properties.
研究领域:
材料科学
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表面工程
·
腐蚀防护
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2024
·
IF 8.3
Rui Gou,Shihong Zhang,Yi He,Changhua Li,Dan Sun,Yiling He,Hongjie Li,Khavkin Aleksandr,Xiao Guo,Hua Xiang
In this work, the synergistic effect of polyaniline (PANI) and Ce cations was utilized to develop a graphene oxide (GO) electrophoretic deposition (EPD) green epoxy (EP) coating with a physical barrier and corrosion inhibition . PANI and Ce cation not only form a protective layer with inhibition but also convert the negative charge of GO to a positive charge, thus satisfying the conditions of cathodic electrophoretic deposition ( C -EPD). Anti-corrosion test results showed that the GO/PANI/Ce(NO 3 ) 3 (GPC)/EP composite coating has the highest impedance, with the impedance modulus at day 35 three orders of magnitude higher than that of the neat EP coating. The passivation film generated by the GPC inhibits large corrosion extensions; it produces a significant self-healing effect, as evidenced by the corrosion morphology, the XPS analysis , and the stable value of the impedance modulus. This work provides a new strategy for manufacturing high-performance electrophoretic epoxy coatings with self-healing properties.
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）