Study of Localized Corrosion Susceptibility of Ni-Based Superalloys Employing Electrochemical Noise Technique

Almeraya Calderón, Facundo y Huerta Zavala, Miguel Sergio y Maldonado Bandala, Erick y Nieves Mendoza, Demetrio y Jáquez Muñoz, Jesús Manuel y Baltazar Zamora, Miguel Ángel y Landa Ruiz, Laura y Estupiñan López, Francisco Humberto y Olguín Coca, Javier y Flores de los Ríos, Juan Pablo y Gaona Tiburcio, Citlalli (2026) Study of Localized Corrosion Susceptibility of Ni-Based Superalloys Employing Electrochemical Noise Technique. Materials, 19 (11). pp. 1-24. ISSN 1996-1944

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Resumen

Inconel superalloys are employed in demanding components of different equipment. However, they can be exposed to atmospheric corrosion systems, such as marine and industrial environments. This research is focused on studying the localized corrosion susceptibility of Inconel 600, 690 and 718 exposed to H2SO4, 1 wt.% and 3.5 wt. % NaCl solutions, simulating marine and industrial atmospheres at 25 ± 0.5 °C. Localized corrosion behavior was characterized by electrochemical noise (EN) and cyclic potentiodynamic polarization (CPP) curves according to ASTM 6-199 ASTM G61 standards. The EN technique was analyzed through time series and analysis for chaotic systems, such as Hurst, Lyapunov and Husdorff coefficients, to determine the corrosion type of each system to reduce the uncertainty in common statistical analysis. The EN results show how Inconel superalloys tend to present localized attacks, being more notorious in NaCl. The application of specialized methods such as Hurst and Lyapunov helped to determine the corrosion system when alloys were characterized by EN. The results indicated that all superalloys exhibit positive hysteresis under CPP, indicating susceptibility to localized pitting corrosion.

Tipo de elemento:

Article

Palabras claves no controlados:

Corrosión localizada; Ruido electroquímico; Picaduras; Polarización potenciodinámica cíclica

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
Almeraya Calderón, Facundo	facundo.almerayacl@uanl.edu.mx	orcid.org/0000-0002-3014-2814
Huerta Zavala, Miguel Sergio	NO ESPECIFICADO	NO ESPECIFICADO
Maldonado Bandala, Erick	NO ESPECIFICADO	NO ESPECIFICADO
Nieves Mendoza, Demetrio	NO ESPECIFICADO	NO ESPECIFICADO
Jáquez Muñoz, Jesús Manuel	NO ESPECIFICADO	NO ESPECIFICADO
Baltazar Zamora, Miguel Ángel	NO ESPECIFICADO	NO ESPECIFICADO
Landa Ruiz, Laura	NO ESPECIFICADO	NO ESPECIFICADO
Estupiñan López, Francisco Humberto	NO ESPECIFICADO	NO ESPECIFICADO
Olguín Coca, Javier	NO ESPECIFICADO	NO ESPECIFICADO
Flores de los Ríos, Juan Pablo	NO ESPECIFICADO	NO ESPECIFICADO
Gaona Tiburcio, Citlalli	citlalli.gaonatbr@uanl.edu.mx	orcid.org/0000-0001-9072-3090