Susceptibility to Pitting Corrosion of AerMet 100 and 4340 Alloys for Aeronautical Applications

Huerta Zavala, Miguel Sergio y Gaona Tiburcio, Citlalli y Nieves Mendoza, Demetrio y Jáquez Muñoz, Jesús Manuel y Cabral Miramontes, José Ángel y Maldonado Bandala, Erick y Croche Belin, Rene y Baltazar Zamora, Miguel Ángel y Landa Ruiz, Laura y López León, Luis Daimir y Olguín Coca, Javier y Almeraya Calderón, Facundo (2026) Susceptibility to Pitting Corrosion of AerMet 100 and 4340 Alloys for Aeronautical Applications. Materials, 2026 (19). pp. 1-18. ISSN 1996-1944

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Resumen

In the aeronautics industry, high-strength steels such as AerMet 100 and 4340 are widely used in critical structural components that must withstand extreme operating environ-ments. These materials possess high tensile strength, fracture toughness, and fatigue re-sistance. The aim of this investigation is to study the susceptibility to localized pitting corrosion of two aeronautics alloys, AerMet 100 and 4340, and their immersion in H2SO4, NaCl, and HCl solutions at room temperature, using electrochemical noise (EN) according to the ASTM ASTM-G199 standard. The EN signal was filtered by two different methods, and the polynomial method was employed to obtain Rn, LI, Kurtosis, Skewness, and the potential spectral density analysis (PSD). Results indicate that AerMet 100 exhibits lower corrosion rate—up to an order of magnitude lower than 4340. The resistance noise of 1599 Ω·cm2 in NaCl is higher. This same behavior is replicated when analyzing the noise im-pedance response (Zn). In conjunction with the analyses of PSD slope, it is reported that localized corrosion is the predominant mechanism in the evaluated environments.

Tipo de elemento:	Article
Palabras claves no controlados:	Corrosión localizada; Ruido electroquímico; Picaduras
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 Huerta Zavala, Miguel Sergio NO ESPECIFICADO NO ESPECIFICADO Gaona Tiburcio, Citlalli citlalli.gaonatbr@uanl.edu.mx orcid.org/0000-0001-9072-3090 Nieves Mendoza, Demetrio NO ESPECIFICADO NO ESPECIFICADO Jáquez Muñoz, Jesús Manuel NO ESPECIFICADO NO ESPECIFICADO Cabral Miramontes, José Ángel NO ESPECIFICADO orcid.org/0000-0003-1483-3081 Maldonado Bandala, Erick NO ESPECIFICADO NO ESPECIFICADO Croche Belin, Rene NO ESPECIFICADO NO ESPECIFICADO Baltazar Zamora, Miguel Ángel NO ESPECIFICADO NO ESPECIFICADO Landa Ruiz, Laura NO ESPECIFICADO NO ESPECIFICADO López León, Luis Daimir NO ESPECIFICADO NO ESPECIFICADO Olguín Coca, Javier NO ESPECIFICADO NO ESPECIFICADO Almeraya Calderón, Facundo facundo.almerayacl@uanl.edu.mx orcid.org/0000-0002-3014-2814
Fecha del depósito:	16 Abr 2026 16:07
Última modificación:	16 Abr 2026 16:07
URI:	http://eprints.uanl.mx/id/eprint/31195

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