2026-09-30T15:18:26Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/46792024-10-01T15:53:26Zcom_20.500.14352_14col_20.500.14352_15

Effect of cerium (IV) on thin sulfuric acid anodizing of 2024-T3 alloy Olmo, R. del Mohedano Sánchez, Marta Visser, P. Rodríguez Rodríguez, Araceli Matykina, Endzhe Arrabal Durán, Raúl Chromic acid anodizing (CAA) is still being used today for corrosion protection of fatigue-critical components in the aeronautic industry due to the lack of feasible alternatives. Ce-containing sulfuric acid anodizing (SAA) has been identified as a promising strategy for the development of alternatives to toxic CAA. This work explores thin sulfuric acid anodizing (TSAA) focusing on the following effects: (i) current density and voltage values; (ii) concentration of Ce(IV). Screening of the optimum combination in search of minimum thickness and the best corrosion resistance was performed using electrochemical impedance spectroscopy (EIS). Two Ce-containing anodic films were selected and further investigated in comparison with the inhibitor-free film in terms of morphology (FEG-SEM, TEM), composition (RBS), corrosion resistance (EIS, NSST), high-cycle fatigue and paint adhesion. The results indicate that the path to approach the CAA performance lies through thin (<1 μm) SAA-Ce films formed at low current density. 2023-06-16T14:19:25Z 2023-06-16T14:19:25Z 2023-06-16T14:19:25Z 2021-10-07 journal article https://hdl.handle.net/20.500.14352/4679 2238-7854 10.1016/j.jmrt.2021.09.117 eng ALMAGIC (755515) RTI2018-096391-B-C33 ADITIMAT-CM (S2018/NMT-4411) RYC-201721843 https://creativecommons.org/licenses/by-nc-nd/3.0/es/ open access Atribución-NoComercial-SinDerivadas 3.0 España Elsevier Science BV