Influence of de-icing salt chemistry on the corrosion behavior of AA6016

Research output: Contribution to journalJournal article – Annual report year: 2018Researchpeer-review

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De-icing salts are commonly used on European roads during winter and are usually based on chlorides of sodium, magnesium, or calcium. The salt selection depends on the local climate and legislation. Therefore, the chemical composition of the de-icing mixture can be very different within Europe. This represents an important challenge for the automotive industry as the corrosion behavior of automotive parts is intricately linked to the chemistry of the road environment. Furthermore, the use of aluminium alloys in the automotive industry increases due to a constant search for weight reduction. Till now, most of the corrosion studies on aluminium alloys in chloride based solutions have only been focused on sodium chloride. In this study, the effect of different chloride based salts on the corrosion of AA6016 was investigated. For that purpose, potentiodynamic polarization measurements were combined with surface analysis by SEM-EDS and depth profiling using GDOES. Salts based on sodium and calcium showed similar effects on the corrosion behavior of AA6016 while the magnesium based salt reduced the corrosion rate. Mixture of sodium and magnesium based salts increased the corrosive attack.

Original languageEnglish
JournalMaterials and Corrosion
Volume69
Issue number7
Pages (from-to)881-887
ISSN0947-5117
DOIs
Publication statusPublished - 2018
CitationsWeb of Science® Times Cited: No match on DOI

    Research areas

  • AA6016, Calcium chloride, De-icing salt, Magnesium chloride, Sodium chloride

ID: 142165321