Electrochemical Noise Analysis: An Approach to the Effectivity of Each Method in Different Materials

Jáquez Muñoz, Jesús Manuel y Gaona Tiburcio, Citlalli y Méndez Ramírez, Ce Tochtli y Martínez Ramos, Cynthia y Baltazar Zamora, Miguel Ángel y Santiago Hurtado, Griselda y Estupiñan López, Francisco H. y Landa Ruiz, Laura y Nieves Mendoza, Demetrio y Almeraya Calderón, Facundo (2024) Electrochemical Noise Analysis: An Approach to the Effectivity of Each Method in Different Materials. Materials, 2024 (17). pp. 1-24. ISSN 1996-1944

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URL o página oficial: https://doi.org/10.3390/ma17164013

Resumen

Corrosion deterioration of materials is a major problem affecting economic, safety, and logistical issues, especially in the aeronautical sector. Detecting the correct corrosion type in metal alloys is very important to know how to mitigate the corrosion problem. Electrochemical noise (EN) is a corrosion technique used to characterize the behavior of different alloys and determine the type of corrosion in a system. The objective of this research is to characterize by EN technique different aeronautical alloys (Al, Ti, steels, and superalloys) using different analysis methods such as time domain (visual analysis, statistical), frequency domain (power spectral density (PSD)), and frequency–time domain (wavelet decomposition, Hilbert Huang analysis, and recurrence plots (RP)) related to the corrosion process. Optical microscopy (OM) is used to observe the surface of the tested samples. The alloys were exposed to 3.5 wt.% NaCl and H2SO4 solutions at room temperature. The results indicate that HHT and recurrence plots are the best options for determining the corrosion type compared with the other methods due to their ability to analyze dynamic and chaotic systems, such as corrosion. Corrosion processes such as passivation and localized corrosion can be differentiated when analyzed using HHT and RP methods when a passive system presents values of determinism between 0.5 and 0.8. Also, to differentiate the passive system from the localized system, it is necessary to see the recurrence plot due to the similarity of the determinism value. Noise impedance (Zn) is one of the best options for determining the corrosion kinetics of one system, showing that Ti CP2 and Ti-6Al-4V presented 742,824 and 939,575 Ω·cm2, while Rn presented 271,851 and 325,751 Ω·cm2, being the highest when exposed to H2SO4.

Tipo de elemento:

Article

Palabras claves no controlados:

Ruido electroquímico; Análisis estadístico; Densidad espectral de potencia (PSD); Wavelets; Transformada de Hilbert-Huang (HHT); Gráficos de recurrencia (RP)

Materias:

T Tecnología > TA Ingeniería General y Civil

Divisiones:

Ingeniería Mecánica y Eléctrica > Doctorado en Ciencias de la Ingeniería Aeronáutica

Usuario depositante:

Dra Citlalli Gaona

Creadores:

Creador	Email	ORCID
Jáquez Muñoz, Jesús Manuel	NO ESPECIFICADO	NO ESPECIFICADO
Gaona Tiburcio, Citlalli	citlalli.gaonatbr@uanl.edu.mx	orcid.org/0000-0001-9072-3090
Méndez Ramírez, Ce Tochtli	NO ESPECIFICADO	NO ESPECIFICADO
Martínez Ramos, Cynthia	NO ESPECIFICADO	NO ESPECIFICADO
Baltazar Zamora, Miguel Ángel	NO ESPECIFICADO	NO ESPECIFICADO
Santiago Hurtado, Griselda	NO ESPECIFICADO	NO ESPECIFICADO
Estupiñan López, Francisco H.	NO ESPECIFICADO	NO ESPECIFICADO
Landa Ruiz, Laura	NO ESPECIFICADO	NO ESPECIFICADO
Nieves Mendoza, Demetrio	NO ESPECIFICADO	NO ESPECIFICADO
Almeraya Calderón, Facundo	facundo.almerayacl@uanl.edu.mx	orcid.org/0000-0002-3014-2814