by M. García-Rubio, P. Ocón, A. Climent-Font, R. W. Smith, M. Curioni, G. E. Thompson, P. Skeldon, A. Lavía and I. García
Abstract:
AA2024 T3 alloy specimens have been anodised in tartaric acid/sulphuric media and tartaric acid/sulphuric media containing sodium molybdate; molybdate species were added to the anodising bath to enhance further the protection provided by the porous anodic film developed over the macroscopic alloy surface. Morphological characterisation of the anodic films formed in both electrolytes was undertaken using scanning electron and transmission electron microscopies; the chemical compositions of the films were determined by Rutherford backscattering spectroscopy that was complemented by elemental depth profiling using rf-glow discharge optical emission spectrometry. The electrochemical behaviour was evaluated using potentiodynamic polarisations and electrochemical impedance spectroscopy; the corrosion performance was examined after salt spray testing. The porous anodic film morphology was little influenced by the addition of molybdate salt, although thinner films were generated in its presence. Chemical composition of the anodic film was roughly similar; however, addition of sodium molybdate in the anodizing bath resulted in residues of molybdate species in the porous skeleton and improved corrosion resistance measured by electrochemical techniques that was confirmed by salt spray testing.
Reference:
M. García-Rubio, P. Ocón, A. Climent-Font, R. W. Smith, M. Curioni, G. E. Thompson, P. Skeldon, A. Lavía and I. García, “Influence of molybdate species on the tartaric acid/sulphuric acid anodic films grown on AA2024 T3 aerospace alloy”, Corrosion Science, vol. 51, no. 9, pp. 2034–2042.
Bibtex Entry:
@article{garcia-rubio_influence_2009,
	title = {Influence of molybdate species on the tartaric acid/sulphuric acid anodic films grown on {AA2024} {T3} aerospace alloy},
	volume = {51},
	issn = {0010-938X},
	url = {http://www.sciencedirect.com/science/article/pii/S0010938X09002388},
	doi = {10.1016/j.corsci.2009.05.034},
	abstract = {AA2024 T3 alloy specimens have been anodised in tartaric acid/sulphuric media and tartaric acid/sulphuric media containing sodium molybdate; molybdate species were added to the anodising bath to enhance further the protection provided by the porous anodic film developed over the macroscopic alloy surface. Morphological characterisation of the anodic films formed in both electrolytes was undertaken using scanning electron and transmission electron microscopies; the chemical compositions of the films were determined by Rutherford backscattering spectroscopy that was complemented by elemental depth profiling using rf-glow discharge optical emission spectrometry. The electrochemical behaviour was evaluated using potentiodynamic polarisations and electrochemical impedance spectroscopy; the corrosion performance was examined after salt spray testing. The porous anodic film morphology was little influenced by the addition of molybdate salt, although thinner films were generated in its presence. Chemical composition of the anodic film was roughly similar; however, addition of sodium molybdate in the anodizing bath resulted in residues of molybdate species in the porous skeleton and improved corrosion resistance measured by electrochemical techniques that was confirmed by salt spray testing.},
	number = {9},
	urldate = {2017-10-06},
	journal = {Corrosion Science},
	author = {García-Rubio, M. and Ocón, P. and Climent-Font, A. and Smith, R. W. and Curioni, M. and Thompson, G. E. and Skeldon, P. and Lavía, A. and García, I.},
	month = sep,
	year = {2009},
	keywords = {A. Acid solutions, A. Alloy, A. Aluminium, B. EIS, C. Anodic films},
	pages = {2034--2042},
	file = {ScienceDirect Full Text PDF:E:\cmam_papers\files\985\García-Rubio et al. - 2009 - Influence of molybdate species on the tartaric aci.pdf:application/pdf;ScienceDirect Full Text PDF:E:\Usuarios\Administrator\Zotero\storage\RBPYVYWD\García-Rubio et al. - 2009 - Influence of molybdate species on the tartaric aci.pdf:application/pdf;ScienceDirect Snapshot:E:\cmam_papers\files\984\S0010938X09002388.html:text/html;ScienceDirect Snapshot:E:\Usuarios\Administrator\Zotero\storage\A77BV2YE\S0010938X09002388.html:text/html},
}