Print Email Facebook Twitter Editors' Choice - Dealloying-Driven Cerium Precipitation on Intermetallic Particles in Aerospace Aluminium Alloys Title Editors' Choice - Dealloying-Driven Cerium Precipitation on Intermetallic Particles in Aerospace Aluminium Alloys Author Kosari, A. (TU Delft Team Yaiza Gonzalez Garcia) Ahmadi, M. (TU Delft QN/Zandbergen Lab; Kavli institute of nanoscience Delft) Tichelaar, F.D. (Kavli institute of nanoscience Delft) Visser, P. (Akzo Nobel) Gonzalez Garcia, Y. (TU Delft Team Yaiza Gonzalez Garcia) Zandbergen, H.W. (TU Delft QN/Zandbergen Lab; Kavli institute of nanoscience Delft) Terryn, H.A. (Vrije Universiteit Brussel) Mol, J.M.C. (TU Delft Team Arjan Mol) Date 2021 Abstract Cerium-based compounds have been studied for decades as non-toxic candidates for the protection of aerospace aluminium alloys (AAs) like AA2024-T3. However, the complex heterogeneous microstructure of these alloys has hindered a thorough understanding of the subsequent stages of corrosion protection provided by this class of inhibitors. Thus, this work is devoted to unravelling the interaction mechanisms of different intermetallic particles (IMPs) in AA2024-T3 with cerium nitrate at the nanoscopic scale. This has been fulfilled through detailed top-view and cross-sectional analytical TEM investigations along with electrochemical evaluations. In line with our recent findings, we here report dealloying of IMPs as the main factor governing the rate of local cerium precipitation in contrast to micro-galvanic corrosion between IMPs and the surrounding matrix. Furthermore, we discuss a connection between the electrochemical response of the AA2024-T3 system and the morphological and compositional evolutions of individual IMPs including Al2CuMg, Al2Cu, Al7Cu2Fe(Mn) and Al76Cu6Fe7Mn5Si6 at different stages of a 96-h exposure. To reference this document use: http://resolver.tudelft.nl/uuid:8b3e3e1e-0bcb-4446-8e03-868ba86ad6f2 DOI https://doi.org/10.1149/1945-7111/abf50d ISSN 0013-4651 Source Electrochemical Society. Journal, 168 (4) Part of collection Institutional Repository Document type journal article Rights © 2021 A. Kosari, M. Ahmadi, F.D. Tichelaar, P. Visser, Y. Gonzalez Garcia, H.W. Zandbergen, H.A. Terryn, J.M.C. Mol Files PDF Kosari_2021_J._Electroche ... 041505.pdf 3.06 MB Close viewer /islandora/object/uuid:8b3e3e1e-0bcb-4446-8e03-868ba86ad6f2/datastream/OBJ/view