MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Mechanics of Materials
Influence of Metal Cations on Corrosion Behavior of Aluminum Alloy 2024-T3 in Model Freshwater
Li LiMasatoshi SakairiMd. Saiful IslamAkira Kaneko
Author information
JOURNAL FREE ACCESS FULL-TEXT HTML

2023 Volume 64 Issue 2 Pages 540-547

Details
Abstract

The influence of metal cations on corrosion behavior of aluminum alloy (AA2024-T3) in model freshwater was examined by immersion experiments, surface analysis, and electrochemical measurements. After long-time immersion, the corrosion rate of AA2024-T3 decreased as the corrosion indicator Y increased, and the corrosion rate of the alloy was reduced by Zn2+. The specimen immersed in Zn2+ containing solution showed less corrosion products which were observed by scanning electron microscopy (SEM). The results of X-ray photoelectron spectroscopy (XPS) and Auger electron spectroscopy (AES) showed that Zn2+ attaches to aluminum alloys and forms protective layers. Electrochemical impedance spectroscopy (EIS) results suggested that Zn2+ reduced the area of defects in the passive film.

Fig. 9 Corrosion mechanism of AA2024-T3 in model freshwater containing metal cations with (a), (c) small Y, and (b), (d) large Y. Fullsize Image
Content from these authors
© 2022 Japan Society of Corrosion Engineering
Previous article Next article
feedback
Top