Covalent surface modification of LY12 aluminum alloy surface by self-assembly dodecyl phosphate film towards corrosion protection

Xia, Da-Hai; Pan, Chengcheng; Qin, Zhenbo; Fan, Baomin; Shi, Song; Jin, Wei; Hu, Wenbin

doi:10.1016/j.porgcoat.2020.105638

Cited by 41 publications

(20 citation statements)

References 40 publications

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“…DFT is a very powerful tool for calculating molecular electron descriptors and analyzing inhibitor/surface interaction. In this work, the HOMO and the LUMO were obtained by using Gaussian 09 software and given in Figures 9A-F (Xia et al, 2020).…”

Section: Dftmentioning

confidence: 99%

Imidazo [1,2-a] Pyrimidine Derivatives as Effective Inhibitor of Mild Steel Corrosion in HCl Solution: Experimental and Theoretical Studies

Cao

Huang

et al. 2022

Front. Mater.

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The inhibitory performance of imidazole [1,2-a] pyrimidine derivatives, namely, 2,4-diphenylbenzo [4,5]imidazo [1,2-a]pyrimidine (DPIP) and 2-(4-octylphenyl)-4-phenylbenzo [4,5]imidazo [1,2-a]pyrimidine (OPIP), against mild steel corrosion in 1 mol L−1 HCl solution was studied by weight loss at different temperatures, potentiodynamic polarization curves (PDP), electrochemical impedance spectroscopy (EIS), and surface analysis technology. The two corrosion inhibitors showed an outstanding inhibition performance, and the inhibition efficiency achieved 91.9% for OPIP and 90.5% for DPIP at a concentration of 0.1 mmol L−1. Electrochemical methods showed that DPIP and OPIP behaved as mixed-type inhibitors. Density function theory (DFT) and molecular dynamic simulation (MD) were approached to theoretically study the relationship of the inhibitor structure and anti-corrosion performance, which were also compatible with the weight loss and electrochemical observations.

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Section: Dftmentioning

confidence: 99%

Imidazo [1,2-a] Pyrimidine Derivatives as Effective Inhibitor of Mild Steel Corrosion in HCl Solution: Experimental and Theoretical Studies

Cao

Huang

et al. 2022

Front. Mater.

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“…When the surface is not modified by low surface energy substances, the law between contact angle and roughness can be studied according to Equation [19] (6), that is, the surface contact angle will decrease with the increase of roughness.…”

Section: Morphology Composition and Surface Wettability Performancementioning

confidence: 99%

Corrosion Resistance and Formation Mechanism of Anodic Oxidation–Organic Structure Super‐Hydrophobic Self‐Assembled Film

Wen

Wang

et al. 2021

Adv Materials Inter

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cannot provide longer anti-corrosion protection. Therefore, it is very valuable and significant to develop a surface treatment method for Al alloy with higher corrosion resistance and stability. [8] Preparing super-hydrophobic film on metal surface is one of the methods to improve metal corrosion resistance. The main purpose is to use the super-hydrophobic properties of the metal surface to cut back the chance of touching with the corrosive medium in the solution on the metal surface, thereby, the corrosion resistance of the metal surface can be improved. Surfaces with contact angles greater than 150° and roll angles less than 10° are considered super-hydrophobic. [9] In recent years, many researchers have conducted more in-depth research on the properties of super-hydrophobic surfaces. [10][11][12][13] Many excellent physical and chemical properties are shown by superhydrophobic surface, such as, anti-icing, heat transfer, and self-cleaning, [14] but few have been used in the field of metal surface corrosion protection. In order to improve the corrosion resistance of Al alloy, the preparation of super-hydrophobic film on Al alloy surface is considered to be the effective protection method. [5,12] Generally, the two-step method-based Cassie mode contacts were recognized as a classic super-hydrophobic preparation method; the first step is a rough surface structure prepared, and the second step is surface modification. [15] Therefore, the first step is to build a rough structure through anodizing, which can act as an intermediate layer, improve adhesion, and provide an interface for the organic coating. Then, build a composite film layer by self-assembly technology. [7,16] The basic principle of self-assembly technology is realized by chemical adsorption between the solid/liquid interfaces. It forms a monolayer that is oriented and closely at the interface of the two phases. [17] The solid substrate is immersed in the organic solution of the surfactant, and the functional groups of the active agent molecules react with the surface of the substrate material. The film is a compact 2D monomolecular film with a certain orientation, with chemical bonds on the solid surface. Van der Waals forces are formed between molecules. [18] Self-assembly technology has many advantages in real life, such as environmental protection, simple operation, wide practicability, and excellent corrosion resistance. At present, the self-assembled membrane technology of metal anti-corrosion In this article, the perfluorooctyltriethoxysilane (POTS) is used as a low surface energy substance to self-assemble in Al 2 O 3 surface to prepare a corrosionresistant composite film by anodization and self-assembly technology. The morphology, structure, wettability, and chemical composition of the composite film are characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy, water contact angle, and X-ray photoelectron spectroscopy. The corrosion resistance of the composite film is tested through electrochemical test and the ...

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“…The equivalent circuit in Figure 3 can be used to better fit the measured EIS curves (Xia et al, 2020), where R s is the solution resistance, Q f is the passive film capacitance, R f is the passive film resistance, Q is the electric double layer capacitance, L is the inductance when the active substance is adsorbed on the Based on the fitting results, we know that the charge transfer resistance of the welded joint is low, suggesting that the corrosion resistance of the welded joint is slightly lower than that of the base metal. Figure 4 demonstrates the potentiodynamic polarization curve of 6005 A aluminum alloy base metal and welded joint in a simulated industrial atmospheric environment.…”

Section: Electrochemical Behaviormentioning

confidence: 99%

Study on corrosion fatigue behavior and mechanism of 6005A aluminum alloy and welded joint

Sun

Wang

et al. 2021

ACMM

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Purpose The purpose of this paper is to determine the corrosion fatigue behavior and mechanism of 6005A aluminum alloy and welded joint. Design/methodology/approach Electron back-scattered diffraction (EBSD) were adopted to characterize the microstructure of 6005A aluminum alloy and welded joint. Through potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and corrosion fatigue experiments, the corrosion fatigue behavior and mechanism of 6005A aluminum alloy base metal and welded joint were studied. Findings The results show that the corrosion fatigue crack initiation of 6005A aluminum alloy base metal and welded joint is mainly caused by the preferential anodic dissolution and hydrogen concentration in the areas with inclusions and welding defects. Originality/value The research is an originality study on the corrosion fatigue behavior and mechanism of 6005A aluminum alloy and welded joint.

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Covalent surface modification of LY12 aluminum alloy surface by self-assembly dodecyl phosphate film towards corrosion protection

Cited by 41 publications

References 40 publications

Imidazo [1,2-a] Pyrimidine Derivatives as Effective Inhibitor of Mild Steel Corrosion in HCl Solution: Experimental and Theoretical Studies

Imidazo [1,2-a] Pyrimidine Derivatives as Effective Inhibitor of Mild Steel Corrosion in HCl Solution: Experimental and Theoretical Studies

Corrosion Resistance and Formation Mechanism of Anodic Oxidation–Organic Structure Super‐Hydrophobic Self‐Assembled Film

Study on corrosion fatigue behavior and mechanism of 6005A aluminum alloy and welded joint

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