Corrosion protection of  Zn–Al–Mg‐coated steel by a layered double hydroxide conversion layer

Abstract: Conversion layers produced on an industrial scale are typically based on phosphates or chromates and involve toxicological and environmental problematic treatment solutions and waste. Concerning this matter, layered double hydroxide (LDH)‐based conversion layers prepared by the process described in our study offer a promising alternative where the treatment solution comes with no environmental or toxicological concerns. The corrosion protection of Zn–Al–Mg (ZM)‐coated steel by an in situ grown LDH conversion layer is investigated by potentiodynamic polarization measurements, linear polarization resistance determination, neutral salt spray test and mass loss test. An LDH layer formation time as short as 30 s considerably improves the corrosion resistance of ZM‐coated steel in electrochemical testing as well as in industrially relevant corrosion testing under chloride‐containing atmospheres. With prolonged LDH formation times, further improvement in corrosion protection is obtained. The significantly increased corrosion resistance of ZM‐coated steel after the industrially feasible treatment time of 30 s makes LDH‐based conversion layers a promising candidate for novel industrially viable conversion layers, with enhanced corrosion performance and environmentally benign as well as sustainable chemistry.

Standort
Deutsche Nationalbibliothek Frankfurt am Main
Umfang
Online-Ressource
Sprache
Englisch

Erschienen in
Corrosion protection of  Zn–Al–Mg‐coated steel by a layered double hydroxide conversion layer ; day:31 ; month:05 ; year:2022 ; extent:9
Materials and corrosion ; (31.05.2022) (gesamt 9)

Urheber
Holzner, Tobias
Luckeneder, Gerald
Strauß, Bernhard
Valtiner, Markus

DOI
10.1002/maco.202213097
URN
urn:nbn:de:101:1-2022060115361400443752
Rechteinformation
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Letzte Aktualisierung
15.08.2025, 07:32 MESZ

Datenpartner

Dieses Objekt wird bereitgestellt von:
Deutsche Nationalbibliothek. Bei Fragen zum Objekt wenden Sie sich bitte an den Datenpartner.

Beteiligte

Ähnliche Objekte (12)