Electrochemical Characterization of the Structural Metals Immersed in Natural Seawater: &lt;i&gt;In Situ&lt;/i&gt; Measures

Galván-Martínez, Ricardo; Cruz, D.; Galicia-Aguilar, Gonzalo; Orozco-Cruz, Ricardo; Contreras-Cuevas, Antonio

doi:10.4028/www.scientific.net/msf.755.119

Cited by 3 publications

(1 citation statement)

References 16 publications

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“…Figure 15.2 shows that at the beginning of the test (0 h), and in the anodic branch, a transfer charge resistance process is limited to the anodic reaction, but at the end of the curve, the anodic Tafel slope increased considerably indicating that a passive corrosion products fi lm is adsorbed on the surface of the composite, whereas in the cathodic branch, a cathodic limiting current density ( i LIM ) is possible to observe. This i LIM is attributed to the oxygen diffusion process, mainly to the diffusion of the oxygen through the corrosion products fi lm [ 16 ].…”

Section: Electrochemical Measurementsmentioning

confidence: 99%

Electrochemical Characterization of the Aluminum–Copper Composite Material Reinforced with Titanium Carbide Immersed in Seawater

Alvarez-Lemus

León²,

Contreras

et al. 2015

Materials Characterization

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This work shows the electrochemical study of Al-Cu/TiC composite and Al-Cu alloy immersed in synthetic seawater. Polarization curves (PCs) and the corrosion potential as a function of the time were the electrochemical techniques used to characterize the corrosion process. A typical three-electrode electrochemical cell was used, where the working electrodes (WE) were made from Al-Cu alloy and composite samples, the reference electrode was the saturated calomel electrode (SCE) and a sintered graphite rod was used as auxiliary electrode. The electrochemical measures were carried out at atmospheric pressure and room temperature, and the total exposure time was 24 h. In addition, in order to analyze the corrosion form, a superfi cial analysis using scanning electron microscopy (SEM) was carried out. The electrochemical results showed that the highest corrosion rate corresponding to composite samples and the global corrosion process is a mix process, that is to say, the charge transfer resistance is limited by diffusional resistance. Pitting corrosion type was observed.

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Section: Electrochemical Measurementsmentioning

confidence: 99%

Electrochemical Characterization of the Aluminum–Copper Composite Material Reinforced with Titanium Carbide Immersed in Seawater

Alvarez-Lemus

León²,

Contreras

et al. 2015

Materials Characterization

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Corrosion of Composites

Cuevas

Becerril

Martínez

et al. 2018

Metal Matrix Composites

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In situ Corrosion Study of Copper and Copper-Alloys Exposed to Natural Seawater of the Veracruz Port (Gulf of Mexico)

Orozco-Cruz¹

2017

International Journal of Electrochemical Science

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In this study, the effect of seasonal variability on the marine environment in the corrosion of Cu and Cu-Alloys was analyzed in situ with respect to exposure time. The possible changes in the mechanism of degradation, considering the physicochemical parameters of seawater were studied. An electrochemical study was carried out with three metallic materials industrially used (copper, bronze and brass) for 10 months of continuous exposure in seawater surrounding the San Juan de Ulua Fortress in Veracruz port, Mexico. Electrochemical impedance spectroscopy (EIS) was the electrochemical technique used. Additionally, a characterization of the metal surface with scanning electron microscopy (SEM) and X-ray diffraction (XRD) was carried out. All materials showed good corrosion resistances; however, copper showed higher resistance which took their best values in the last months of exposure presenting a layer of products of Cu 2 O. Additionally, some silicates and sulfates were detected. Pitting and localized corrosion type was observed.

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Electrochemical Characterization of the Structural Metals Immersed in Natural Seawater: <i>In Situ</i> Measures

Cited by 3 publications

References 16 publications

Electrochemical Characterization of the Aluminum–Copper Composite Material Reinforced with Titanium Carbide Immersed in Seawater

Electrochemical Characterization of the Aluminum–Copper Composite Material Reinforced with Titanium Carbide Immersed in Seawater

Corrosion of Composites

In situ Corrosion Study of Copper and Copper-Alloys Exposed to Natural Seawater of the Veracruz Port (Gulf of Mexico)

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