Development and characterization of sealed anodizing as a corrosion protection for AA2024-T3 in saline media

Covelo, Alba; Rodil, Sandra E.; Nóvoa, X.R.; Hernández, Miguel Ángel

doi:10.1016/j.mtcomm.2022.103468

Cited by 9 publications

(3 citation statements)

References 41 publications

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“…The average surface roughness examined using an AFM of the specimens from Series Hydrophilic was 451.5 nm. In the available literature, the following surface roughness values of 918.4 nm [ 54 ]; 213 nm [ 55 ]; 213 nm [ 55 ]; 342 nm [ 56 ] were obtained for anodized aluminum. In the case of polishing the substrate before anodization, the average obtained roughness values were lower [ 55 , 56 ].…”

Section: Resultsmentioning

confidence: 99%

Durability and Additional Properties of Anodized Aluminum-Based Coatings with Different Wettability under Natural Conditions

et al. 2023

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The study aimed to test the durability of coatings under natural conditions. The present study focused on the changes in wettability and additional properties of the coatings under natural conditions. The specimens were subjected to outdoor exposure and additionally immersed in the pond. Impregnating porous anodized aluminum is a popular production method for hydrophobic and superhydrophobic surfaces. However, prolonged exposure of such coatings to natural conditions causes leaching of the impregnate and, thus, the loss of hydrophobic properties. After the loss of hydrophobic properties, all kinds of impurities and fouling adhere better to the porous structure. Additionally, deterioration of anti-icing and anti-corrosion properties was observed. Finally, the self-cleaning, anti-fouling, anti-icing and anti-corrosion properties were comparable or even worse to those of the hydrophilic coating. In the case of superhydrophobic specimens, during outdoor exposure there was no loss of superhydrophobicity, self-cleaning and anti-corrosion properties. Still, despite this, the icing delay time dropped. During outdoor exposure, the structure, which initially had anti-icing properties, may degrade. Nevertheless, the hierarchical structure responsible for the superhydrophobic effect can still be preserved. The superhydrophobic coating initially had the best anti-fouling properties. However, the coating was also gradually losing its superhydrophobic properties during water immersion.

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Section: Resultsmentioning

confidence: 99%

Durability and Additional Properties of Anodized Aluminum-Based Coatings with Different Wettability under Natural Conditions

et al. 2023

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“…Submerging AA2024 in an electrolyte and applying a direct current is a standard method of anodizing the material. One may influence the resulting oxide layer's thickness and characteristics by manipulating process-specific variables including anodizing voltage, current density, immersion time, and temperature [5,6]. The anodized finish displays enhanced corrosion resistance and may be refined for further aesthetic or functional applications.…”

Section: Introductionmentioning

confidence: 99%

Effect of anodizing on aluminum alloy 2024 with boric sulfate acid in medium 3.5 % NaCl

Zuchry,

Renreng,

Arsyad

et al. 2023

EEJET

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The utilization of metal materials finds widespread applications in various industries, including the aircraft industry, where aluminum alloys are commonly employed. However, metal materials are prone to corrosion under specific conditions, necessitating the implementation of corrosion prevention methods to decelerate the material's corrosion rate. Corrosion is a process in which the quality of metal deteriorates due to environmental influences. An effective approach to inhibit corrosion is through anodizing, which involves applying a protective coating to the metal surface, preventing direct contact with the surrounding environment. In this research, the focus was on studying the corrosion rate of aluminum alloy 2024 using Boric Sulfate Acid Anodizing (BSAA) at 10 volts and immersion times of 10, 15, and 20 minutes, followed by sealing with acetic acid in a corrosive environment containing 3.5 % NaCl. The main goals were to evaluate the effectiveness of anodizing with and without sealing in lowering the rate of aluminum corrosion, to compare the effectiveness of anodizing with and without sealing, and to create adsorption models using Langmuir adsorption. Through the examination of the potentiodynamic approach, it was shown that anodizing had an inhibitory impact that was strengthened by sealing. The maximum efficiency of 76 % was attained after 20 minutes of anodizing and sealing at 10 volts. A correlation value of 0.7487 from the Langmuir adsorption modeling was also obtained, pointing to an advantageous adsorption behavior. This research demonstrates how effectively anodizing for aluminum alloy 2024 works with and without sealing, especially in a 3.5 % NaCl-corrosive environment

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“…Many methods can be applied to protect metal structures from corrosion. Among these methods coating of plastic, polymer, inorganic or organic compounds on the metal surface [2,3], anodic and cathodic protection [4,5], and inhibitors [6] are widely used. The use of inhibitors stands out among other methods because it is a practical method that can be used to protect metals in contact with aqueous solutions from corrosion and has become one of the most researched subjects in the field of corrosion protection [7].…”

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confidence: 99%

The Effect of the Oğuzlar Walnut Extract as a Green Corrosion Inhibitor on AISI 1010 Mild Steel

Okutan

Asan

SİNGER

2023

Hittite Journal of Science and Engineering

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Mild steel is primarily used in reinforced concrete structures, because it has a low corrosion rate due to the formation of a passive oxide film in the alkaline environment. However, when exposed to acidic and atmospheric environments or aqueous environments containing dissolved salts such as sea water, the protective film deteriorates and corrosion occurs due to contamination caused by chloride and carbonation. It is possible to obtain corrosion inhibitors by extraction of bioactive compounds from plants. Thus, inexpensive and environmentally friendly new effective inhibitors are obtained as an alternative to environmentally harmful inhibitors. In this context, the subject of the study was determined as the investigation of the inhibition efficiency of the vanillin phenolic compound in the Çorum Oğuzlar walnut shell extract, which is a local product, on the corrosion of AISI 1010 mild steel in acidic, alkaline and salty environments. The walnut shells, which were cleaned, ground and pre-sieved with a certain grain size, were extracted in seven different solvents. In order to find the appropriate solvent, the total phenolic content (TPC) in the extracts was determined by both the Folin Ciocalteu method and the liquid chromatography-mass spectrometry/mass spectrometry (LC-MS/MS) system. Cyclic voltammetry (CV) and Tafel polarization methods were applied to determine the effect of the extract on the electrochemical behavior of AISI 1010 and its corrosion rate. LC-MS/MS analysis showed the presence of compounds containing p electrons, N and O heteroatoms responsible for the corrosion inhibition. The best inhibition effectiveness was obtained with 86.1% acetone-water mixture in acidic environment (0.2 M HCl).

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Development and characterization of sealed anodizing as a corrosion protection for AA2024-T3 in saline media

Cited by 9 publications

References 41 publications

Durability and Additional Properties of Anodized Aluminum-Based Coatings with Different Wettability under Natural Conditions

Durability and Additional Properties of Anodized Aluminum-Based Coatings with Different Wettability under Natural Conditions

Effect of anodizing on aluminum alloy 2024 with boric sulfate acid in medium 3.5 % NaCl

The Effect of the Oğuzlar Walnut Extract as a Green Corrosion Inhibitor on AISI 1010 Mild Steel

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