Comparative study of the effect of inorganic ions on the corrosion of Al 3003 and 6063 in carbonate solution

Protection against corrosion in marine environments of AA6060 aluminium alloy by cerium chlorides

“…Polarisation curves and full immersion treatments allowed us to classify cerium chlorides as cathodic inhibitors of AA6060 corrosion in 3% NaCl in good agreement with literature data [12,18,19]. Scanning electron microscopy and energy dispersive technique were employed in order to get additional information on the inhibition mechanism.…”

“…In this context, rare earths chlorides were successfully introduced as environmental-friendly alternatives to classical process based on chromate derivatives. Thus, lanthanide salts were tested as corrosion inhibitors for different aluminium alloys such as AA5083 [12,13], AA7075 [14], AA8090 [15], AA2090 [16], AA2024 [17], AA3030 and AA6063 [18]. These inhibitors work in high pH condition as well as in neutral medium.…”

Cysteine Duality Effect on the Corrosion Inhibition and Acceleration of 3003 Aluminium Alloy in a 2% NaCl Solution

“…Usually, the inhibition efficiency increases with the inhibitor concentration [12][13][14][15][16][17]32]. However, in our case, no linear trend was found, and IE strongly depended on cysteine concentration and on the saline solution's pH (see Fig.…”

“…These properties have attracted many investigators in the world to explore amino acids capacity to act as eco-friendly corrosion inhibitors for various metals, in different aggressive media [11]. For example, magnesium alloys in a phosphate saline solution (pH 7.4) [12], zinc in 0.05 M and 0.1 M HCl [13], tin in tartaric acid [14], Pb-Ca-Sn alloy in sulfuricd acid [8], aluminum alloy (AA6063) in a deaerated carbonate solution [15], iron in citric acid [16], and copper in a deaerated H2SO4 solution [17]. Cysteine is a sulfur containing α-amino acid, which has three dissociable protonation sites (pKSH = 10.25, pKNH3 + = 8.…”

Electrochemical Behavior Al[sub 2]O[sub 3]∕Al Coated Surgical AZ91 Magnesium Alloy in Simulated Body Fluids

“…When the electrolytes reach the Al 2 O 3 /Al interface, passivation of the Al surface is thought to occur and an Al͑OH͒ 3 /Al 2 O 3 •͑H 2 O͒ protective film is formed. 23,24 It is probably the reason for the gradual enhancement of the corrosion potential during immersion. No intensive fluctuations are observed in the corrosion potentials of the coated sample during the entire immersion time, indicating a stable state of the as-coated sample in the SBF.…”