Characterization of passivity and pitting corrosion of 3003 aluminum alloy in ethylene glycol–water solutions

Liu, Y.; Cheng, Y. Frank

doi:10.1007/s10800-010-0215-6

Cited by 20 publications

(10 citation statements)

References 30 publications

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“…Semiconductor properties of the passive film of aluminum or aluminum alloys have been widely reported [32][33][34][35][36][37], and the relevant results indicate that the passive film of aluminum or aluminum alloys presents either n-type [32,[34][35][36] or p-type property [33] depending on the environmental conditions. In order to reveal the effect of Ce content on the semiconductor properties of passive film, the Mott-Schottky curves are measured.…”

Section: Semiconductor Properties Of Passive Filmsmentioning

confidence: 99%

Influence of cerium content on the corrosion behavior of Al-Co-Ce amorphous alloys in 0.6 M NaCl solution

Zhang

et al. 2019

Journal of Materials Science & Technology

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The effect of cerium content on the corrosion behavior of Al-Co-Ce amorphous alloys in 0.6 M NaCl solution was investigated by cyclic polarization, Mott-Schottky and X-ray photoelectron spectroscopy techniques. Results indicated that the open circuit potential of Al-Co-Ce amorphous alloys displayed a decreased tendency with the increase in Ce content, and the amorphous alloy with 4 at.% Ce presented both the lowest passive current density and donor density indicating the best corrosion resistance, while adding excess Ce led to the reduced corrosion resistance of Al-Co-Ce alloys. Furthermore, it was found that a low Ce content is beneficial to the formation of a more protective passive film on Al-Co-Ce amorphous alloys, and the corrosion inhibition reactions of Al-Co-Ce alloys in 0.6 M NaCl solution were changed with the increase in Ce content and the detailed reasons were discussed.

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Section: Semiconductor Properties Of Passive Filmsmentioning

confidence: 99%

Influence of cerium content on the corrosion behavior of Al-Co-Ce amorphous alloys in 0.6 M NaCl solution

Zhang

et al. 2019

Journal of Materials Science & Technology

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“…Due to its adsorption, the existence of ethylene glycol had a certain protective effect on the corrosion of aluminum. [ 24 ] With an increase in the EGAS concentration, the solution resistance increased continuously, the ionic conductivity of the solution decreased, and the coverage of ethylene glycol on the aluminum surface increased. This increased coverage resulted in a decrease in the double‐layer capacitance and an increase in the surface charge transfer resistance, finally leading to gradually increasing corrosion resistance on the aluminum surface.…”

Section: Resultsmentioning

confidence: 99%

“…In neutral media, the corrosion of aluminum is mainly pitting corrosion. [ 24 ] In general, the electrochemical reactions of aluminum in an EGAS are as follows [ 26,27 ] :…”

Section: Resultsmentioning

confidence: 99%

“…Liu et al found by XPS analysis that the carbon in the film formed on the surface of aluminum in an EGAS had a positive valence, which was due to the existence of a C–O bond in the film; this result indicated the formation of an aluminum–alcohol complex. [ 24 ] With the gradual formation of aluminum–alcohol complexes, a hydrophobic network could be formed that extended into the solution and hindered the entry of water molecules into the aluminum surface. [ 28 ] The adsorption of ethylene glycol to aluminum and the formation of an aluminum–alcohol phase passivation film allowed ethylene glycol to inhibit the corrosion of aluminum.…”

Section: Resultsmentioning

confidence: 99%

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Erosion–corrosion behavior of aluminum in a 50°C ethylene glycol aqueous solution simulating cooling water in HVDC transmission

Tian

Wang

et al. 2021

Materials & Corrosion

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The erosion-corrosion of aluminum in a 50 °C ethylene glycol aqueous solution (EGAS) was studied. Compared with that in deionized water, the corrosion of aluminum in an EGAS was inhibited to a certain extent. The corrosion potential, corrosion current, and charge transfer impedance of aluminum changed from −1.5776 V, 380.4 nA cm −2 , and 1.924 × 10 −4 Ω cm −2 in deionized water to −1.3127 V, 285.5 nA cm −2 , and 4.041 × 10 −4 Ω cm −2 in a 45.3 vt% EGAS, respectively. Ethylene glycol did not ionize in deionized water and the ionic conductivity of the EGAS was low, effectively restraining the corrosion of aluminum. However, a test with aluminum in an EGAS after long-term storage (9 days) showed that ethylene glycol gradually oxidized to glycolic acid, oxalic acid, and other substances, which slowly corroded the aluminum surface. Analysis results showed that the corrosion products on the surface of aluminum were Al(OH) 3 and Al 2 O 3 . The pitting hole formation mechanism of aluminum occurs via an aluminum-alcohol phase formed on the aluminum surface, which can inhibit the dissolution of the oxide film. Therefore, a suitably concentrated EGAS with a high heat capacity and low ionic conductivity similar to that of deionized water can be used as a coolant in airtight valve cooling systems for high-voltage direct-current transmission.

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“…The electrochemical reactions of aluminum alloy in corrosive water solution were as follows [24,25] : Anodic reaction:…”

Section: Corrosion Mechanism Of 3a21 Aluminium Alloy In Ethylene Glycmentioning

confidence: 99%

Corrosion behavior of 3A21 aluminum alloy in ethylene glycol solution under different atmospheres

Zuo

Gong

Zheng

et al. 2020

Mater. Res. Express

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The corrosion behavior of 3A21 aluminum alloy in different concentrations of ethylene glycol solution under different simulated atmospheres was studied by electrochemical methods (potentiodynamic polarization and electrochemical impedance spectroscopy) and surface analytical techniques (metalloscopy and the scanning electron microscope equipped with energy-dispersive x-ray spectrometer). The electrochemical results showed that the corrosion of 3A21 aluminum alloy was affected by the concentration of ethylene glycol solution and atmosphere conditions, and the influence of atmosphere was different in different concentrations of ethylene glycol solution. The results were further confirmed by morphology analysis, and the formation of Al-alcoholized film on the surface of aluminum alloy was proved by element energy spectrum analysis, then the corrosion mechanism of 3A21 aluminum alloy was discussed.

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Characterization of passivity and pitting corrosion of 3003 aluminum alloy in ethylene glycol–water solutions

Cited by 20 publications

References 30 publications

Influence of cerium content on the corrosion behavior of Al-Co-Ce amorphous alloys in 0.6 M NaCl solution

Influence of cerium content on the corrosion behavior of Al-Co-Ce amorphous alloys in 0.6 M NaCl solution

Erosion–corrosion behavior of aluminum in a 50°C ethylene glycol aqueous solution simulating cooling water in HVDC transmission

Corrosion behavior of 3A21 aluminum alloy in ethylene glycol solution under different atmospheres

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