2026-09-30T15:18:24Zhttps://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 CRUE-CSIC (Acuerdos Transformativos 2021) 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 2021-10-07 journal article 2238-7854 10.1016/j.jmrt.2021.09.117 https://hdl.handle.net/20.500.14352/4679 https://doi.org/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