Susceptibility to Pitting Corrosion of Ti-CP2, Ti-6Al-2Sn-4Zr-2Mo, and Ti-6Al-4V Alloys for Aeronautical Applications

Jáquez Muñoz, Jesús Manuel y Gaona Tiburcio, Citlalli y Lira Martínez, Manuel Alejandro y Zambrano Robledo, Patricia del Carmen y Maldonado Bandala, Erick y Samaniego Gámez, Pedro Oliver y Nieves Mendoza, Demetrio y Olguín Coca, Javier y Estupiñan López, Francisco H. y Almeraya Calderón, Facundo (2021) Susceptibility to Pitting Corrosion of Ti-CP2, Ti-6Al-2Sn-4Zr-2Mo, and Ti-6Al-4V Alloys for Aeronautical Applications. Metals, 11 (7). pp. 1-18. ISSN 2075-4701

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URL o página oficial: https://doi.org/10.3390/met11071002

Resumen

Titanium alloys are used in different industries like biomedical, aerospace, aeronautic, chemical, and naval. Those industries have high requirements with few damage tolerances. Therefore, they are necessary to use materials that present fatigue, mechanical, and corrosion resistance. Although Ti-alloys are material with high performance, they are exposed to corrosion in marine and industrial environments. This research shows the corrosion behavior of three titanium alloys, specifically Ti CP2, Ti-6Al-2Sn-4Zr-2Mo, and Ti-6Al-4V. Alloys were exposed on two electrolytes to a 3.5 wt % H2SO4 and NaCl solutions at room temperature using cyclic potentiodynamic polarization (CPP) and electrochemical noise (EN) according to ASTM G61 and ASTM G199 standards. CPP technique was employed to obtain electrochemical parameters as the passivation range (PR), corrosion type, passive layer persistence, corrosion potential (Ecorr), and corrosion rate. EN was analyzed by power spectral density (PSD) in voltage. Results obtained revealed pseudopassivation in CPP and PSD exposed on NaCl for Ti-6Al-2Sn-4Zr-2Mo, indicating instability and corrosion rate lower. However, Ti-6Al-4V presented the highest corrosion rate in both electrolytes. Ti-6Al-2Sn-4Zr-2Mo revealed pseudopassivation in CPP and PSD in NaCl, indicating a passive layer unstable. However, the corrosion rate was lower in both solutions.

Tipo de elemento:

Article

Palabras claves no controlados:

Corrosion, Potentiodynamic polarization, PSD, Titanium.

Materias:

T Tecnología > TA Ingeniería General y Civil

Divisiones:

Ingeniería Mecánica y Eléctrica

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
Lira Martínez, Manuel Alejandro	NO ESPECIFICADO	NO ESPECIFICADO
Zambrano Robledo, Patricia del Carmen	patricia.zambranor@uanl.edu.mx	NO ESPECIFICADO
Maldonado Bandala, Erick	NO ESPECIFICADO	NO ESPECIFICADO
Samaniego Gámez, Pedro Oliver	NO ESPECIFICADO	NO ESPECIFICADO
Nieves Mendoza, Demetrio	NO ESPECIFICADO	NO ESPECIFICADO
Olguín Coca, Javier	NO ESPECIFICADO	NO ESPECIFICADO
Estupiñan López, Francisco H.	NO ESPECIFICADO	NO ESPECIFICADO
Almeraya Calderón, Facundo	facundo.almerayacl@uanl.edu.mx	orcid.org/0000-0002-3014-2814