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Coatings
,  volume 15 ,  issue 2 ,  pages 131

Study of Al7075 Localized Corrosion Inhibition by a SiO2 Superhydrophobic Coating Employing an Electrochemical Noise Technique

Luis Eduardo Vázquez Nuñez 1
, 
D Cornejo Monroy 1
, 
Betania Sánchez-Santamaría 1
, 
J S Arias Cerón 2
, 
Alfredo Villanueva-Montellano 1
, 
Aurora Abigail López-Ibarra 1
, 
Jesús Jáquez-Muñoz 3
1
 
2
 
3
 
Departamento Metal-Mecánica, Instituto Tecnológico de Ciudad Juárez, Ciudad Juárez 32500, Mexico | 
Publication type: Journal Article
Publication date: 2025-01-23
MDPI
scimago Q2
wos Q2
SJR: 0.539
CiteScore: 5.4
Impact factor: 2.8
ISSN: 20796412
Abstract

Aluminum presents localized corrosion when exposed to marine and industrial environments. In this research, we study the pitting susceptibility of Al7075 coated by a SiO2 sol–gel coating as a corrosion inhibitor employing the electrochemical noise technique. The analysis methods were power spectral densities (PSDs) in noise impedance (Zn), complaints by wavelet transform, recurrence plots, and Hilbert–Huang study due to the chaotic behavior of the EN signal. To perform the EN, the parameters employed were 2048 data, 1 datum per second in NaCl, and H2SO4 electrolytes at 3.5 wt.% simulating marine and industrial environments. EN tests were performed following ASTM G199. The results showed an increase in the localized corrosion process when SiO2 coating was applied. This is due to the cracking morphology of the coating.

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Vázquez Nuñez L. E. et al. Study of Al7075 Localized Corrosion Inhibition by a SiO2 Superhydrophobic Coating Employing an Electrochemical Noise Technique // Coatings. 2025. Vol. 15. No. 2. p. 131.
GOST all authors (up to 50) Copy
Vázquez Nuñez L. E., Cornejo Monroy D., Sánchez-Santamaría B., Cerón J. S. A., Villanueva-Montellano A., López-Ibarra A. A., Jáquez-Muñoz J. Study of Al7075 Localized Corrosion Inhibition by a SiO2 Superhydrophobic Coating Employing an Electrochemical Noise Technique // Coatings. 2025. Vol. 15. No. 2. p. 131.
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RIS Copy
TY - JOUR
DO - 10.3390/coatings15020131
UR - https://www.mdpi.com/2079-6412/15/2/131
TI - Study of Al7075 Localized Corrosion Inhibition by a SiO2 Superhydrophobic Coating Employing an Electrochemical Noise Technique
T2 - Coatings
AU - Vázquez Nuñez, Luis Eduardo
AU - Cornejo Monroy, D
AU - Sánchez-Santamaría, Betania
AU - Cerón, J S Arias
AU - Villanueva-Montellano, Alfredo
AU - López-Ibarra, Aurora Abigail
AU - Jáquez-Muñoz, Jesús
PY - 2025
DA - 2025/01/23
PB - MDPI
SP - 131
IS - 2
VL - 15
SN - 2079-6412
ER -
BibTex |
Cite this
BibTex (up to 50 authors) Copy
@article{2025_Vázquez Nuñez,
author = {Luis Eduardo Vázquez Nuñez and D Cornejo Monroy and Betania Sánchez-Santamaría and J S Arias Cerón and Alfredo Villanueva-Montellano and Aurora Abigail López-Ibarra and Jesús Jáquez-Muñoz},
title = {Study of Al7075 Localized Corrosion Inhibition by a SiO2 Superhydrophobic Coating Employing an Electrochemical Noise Technique},
journal = {Coatings},
year = {2025},
volume = {15},
publisher = {MDPI},
month = {jan},
url = {https://www.mdpi.com/2079-6412/15/2/131},
number = {2},
pages = {131},
doi = {10.3390/coatings15020131}
}
MLA
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MLA Copy
Vázquez Nuñez, Luis Eduardo, et al. “Study of Al7075 Localized Corrosion Inhibition by a SiO2 Superhydrophobic Coating Employing an Electrochemical Noise Technique.” Coatings, vol. 15, no. 2, Jan. 2025, p. 131. https://www.mdpi.com/2079-6412/15/2/131.