Degradability of aluminum in acidic and alkaline solutions

Boukerche, Ikram; Djerad, Souad; Benmansour, Leila; Tifouti, L.; Saleh, Khashayar

doi:10.1016/j.corsci.2013.10.019

Cited by 81 publications

(39 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The potential increased rapidly up to 2 min, and then the increase became slowly. These are in good agreement with open-circuit corrosion of Al in alkaline solutions [33][34][35]. Based on the mechanism of corrosion of Al in alkaline solutions suggested by Adhikari et al [35,36], the value of the minimum potential of electropolished samples indicated that it was determined by the Nernst potential for oxidation of surface AlH 3 .…”

Section: Analysis Of Open-circuit Potentialsupporting

confidence: 71%

The corrosion of AA2037 aluminum alloy in alkaline aqueous solution studied using slow positron beam spectroscopy

et al. 2016

View full text Add to dashboard Cite

Corrosion behavior of AA2037 T8 Al alloy in a 1 M NaOH aqueous solution was investigated using slow positron beam, together with microscopy techniques and electrochemical tests. The alloy was homogenized at 510°C for 2 h and 30 s, respectively, before final peak aging, so that one Sample A had more dispersoids than Sample B after homogenization. It was found that S parameter of the Doppler-broadened annihilation was significantly decreased near the surface in both samples in the alkaline solution. With increasing the dissolution time, Sample A showed a slower decrease rate than Sample B, which might imply that the preexistence of more dispersoids might hinder the corrosion process in Sample A. Scanning electron microscopy and atomic force microscopy observations found that the surfaces of both samples were uniformly thinned due to intense chemical dissolution by the attack of OH -. With increasing the dissolution time, Sample B was corroded more substantially and produced more and larger pits in a short dissolution time than Sample A. Furthermore, polarization curves showed that Sample A had a lower corrosion current and corrosion rate than Sample B, which revealed that the presence of the dispersoids was responsible for the better corrosion resistance in the alloy.

show abstract

Section: Analysis Of Open-circuit Potentialsupporting

confidence: 71%

The corrosion of AA2037 aluminum alloy in alkaline aqueous solution studied using slow positron beam spectroscopy

et al. 2016

View full text Add to dashboard Cite

show abstract

“…The formation of Al O S bonds is also possible. In alkaline solution, Al(OH) 3 may dissolve by further reacting with OH − : Al(OH) 3 + OH -→ Al(OH) 4 - [43]. Meanwhile the corrosion product Al(DBS) 3 , the oxides or hydroxides of lanthanum and La(DBS) 3 also form.…”

Section: Xps Analysismentioning

confidence: 98%

Evolution of the corrosion process of AA 2024-T3 in an alkaline NaCl solution with sodium dodecylbenzenesulfonate and lanthanum chloride inhibitors

Zhou

Wang

Zuo

2015

Applied Surface Science

View full text Add to dashboard Cite

“…However, Al-Zn-Mg alloy dissolves faster in alkaline solution than in acid solution due to ready thinning of the passive film. In alkaline solution, the overall reaction is governed as follows [33]:…”

Section: Effect Of Sc Addition On Scc Susceptibility Of Al-zn-mg Allomentioning

confidence: 99%

Influence of Scandium Addition on Stress Corrosion Cracking Susceptibility of Al-Zn-Mg Alloy in Different Corrosive Environments

Jiang

Yan

et al. 2018

Metals

View full text Add to dashboard Cite

Stress corrosion cracking (SCC) susceptibilities of Al-Zn-Mg alloys without and with Scandium addition were evaluated in 3.5% NaCl solution at different pH and different strain rate, using slow strain rate test technique. The results indicate that Sc addition reduces grain size and width of precipitation free zones, and transforms grain boundary precipitates from continuous distribution into interrupted distribution by inhibiting recrystallization. In solution at pH 1, pH 3 and pH 7, Sc addition reduces the degree of localized corrosion of alloy surface and SCC susceptibility of Al-Zn-Mg alloy. However, in solution at pH 10 and pH 12, grain refinement significantly promotes the diffusion of hydrogen atoms into matrix, thus Sc addition increases SCC susceptibility of Al-Zn-Mg alloy. Under different strain rate conditions, Sc addition can all reduce SCC susceptibility of Al-Zn-Mg alloy in solution at pH 1, pH 3 and pH 7, and can all increase SCC susceptibility of Al-Zn-Mg alloy in solution at pH 10 and pH 12. As a result, Sc modified Al-Zn-Mg alloy in practical applications should be avoided in alkaline environments.

show abstract

Degradability of aluminum in acidic and alkaline solutions

Cited by 81 publications

References 41 publications

The corrosion of AA2037 aluminum alloy in alkaline aqueous solution studied using slow positron beam spectroscopy

The corrosion of AA2037 aluminum alloy in alkaline aqueous solution studied using slow positron beam spectroscopy

Evolution of the corrosion process of AA 2024-T3 in an alkaline NaCl solution with sodium dodecylbenzenesulfonate and lanthanum chloride inhibitors

Influence of Scandium Addition on Stress Corrosion Cracking Susceptibility of Al-Zn-Mg Alloy in Different Corrosive Environments

Contact Info

Product

Resources

About