by R. del Olmo, M. Mohedano, P. Visser, A. Rodriguez, E. Matykina and R. Arrabal
Abstract:
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 (textless1 μm) SAA-Ce films formed at low current density.
Reference:
R. del Olmo, M. Mohedano, P. Visser, A. Rodriguez, E. Matykina and R. Arrabal, “Effect of cerium (IV) on thin sulfuric acid anodizing of 2024-T3 alloy”, Journal of Materials Research and Technology, vol. 15, pp. 3240–3254.
Bibtex Entry:
@article{del_olmo_effect_2021,
title = {Effect of cerium ({IV}) on thin sulfuric acid anodizing of 2024-{T3} alloy},
volume = {15},
issn = {2238-7854},
url = {https://www.sciencedirect.com/science/article/pii/S2238785421011054},
doi = {10.1016/j.jmrt.2021.09.117},
abstract = {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 ({textless}1 μm) SAA-Ce films formed at low current density.},
language = {en},
urldate = {2023-01-13},
journal = {Journal of Materials Research and Technology},
author = {del Olmo, R. and Mohedano, M. and Visser, P. and Rodriguez, A. and Matykina, E. and Arrabal, R.},
month = nov,
year = {2021},
keywords = {Corrosion, Aluminium, Anodizing, Cerium},
pages = {3240--3254},
file = {ScienceDirect Full Text PDF:E:\Usuarios\Administrator\Zotero\storage\BNEXTNCL\del Olmo et al. - 2021 - Effect of cerium (IV) on thin sulfuric acid anodiz.pdf:application/pdf;ScienceDirect Snapshot:E:\Usuarios\Administrator\Zotero\storage\TIZKAMC2\S2238785421011054.html:text/html},
}