Corrosion protection of aluminium alloy 2024-T3 in 0.05 M NaCl by cerium cinnamate

► Cerium cinnamate is found to be a new and effective inhibitor for AA 2024-T3. ► During the initial stage of immersion, anodic inhibition is apparent due to the deposition film. ► Cinnamate group and cerium ion have combined corrosion inhibition function for AA 2024-T3. The corrosion protection of...

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Veröffentlicht in:Corrosion science 2011-07, Vol.53 (7), p.2374-2384
Hauptverfasser: Shi, Hongwei, Han, En-Hou, Liu, Fuchun
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Liu, Fuchun
description ► Cerium cinnamate is found to be a new and effective inhibitor for AA 2024-T3. ► During the initial stage of immersion, anodic inhibition is apparent due to the deposition film. ► Cinnamate group and cerium ion have combined corrosion inhibition function for AA 2024-T3. The corrosion protection of AA 2024-T3 in 0.05 M NaCl by cerium cinnamate has been studied. Polarization measurements demonstrate that cerium cinnamate is markedly effective for suppressing anodic process of the alloy corrosion during the initial 72 h of immersion. The protection mechanism during the immersion period appears to involve two stages: the deposition of cerium cinnamate, and then hydrolysis of cerium ions forming a cerium oxide/hydroxide, prevailing over the foregoing deposition. This study also elucidates the inhibition effect of cerium cinnamate on the early corrosion attack occurred from the second phase particles by X-ray photoelectron spectroscopy and electron-probe microanalysis.
doi_str_mv 10.1016/j.corsci.2011.03.012
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subjects A. Alloy
A. Rare earth elements
Applied sciences
B. EIS
B. XPS
C. Neutral inhibition
Corrosion
Corrosion environments
Corrosion prevention
Exact sciences and technology
Metals. Metallurgy
title Corrosion protection of aluminium alloy 2024-T3 in 0.05 M NaCl by cerium cinnamate
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