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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Influence of chloride ions concentration on the development of severe localised corrosion and its effects on the electrochemical response of the 2198-T8 alloy

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Author(s):
Carvalho Machado, Caruline de Souza [1] ; Pereira da Silva, Rejane Maria [1] ; de Sousa Araujo, Joao Victor [1] ; Milagre, Mariana Xavier [1] ; Donatus, Uyime [1] ; Goncalves de Viveiros, Barbara Victoria [1] ; Klumpp, Rafael Emil [1] ; Costa, Isolda [1]
Total Authors: 8
Affiliation:
[1] Nucl & Energy Res Inst IPEN CNEN, Mat Sci & Technol Ctr, Sao Paulo - Brazil
Total Affiliations: 1
Document type: Journal article
Source: CORROSION ENGINEERING SCIENCE AND TECHNOLOGY; v. 56, n. 4, p. 341-350, MAY 19 2021.
Web of Science Citations: 0
Abstract

The development of severe localised corrosion (SLC) on the 2198-T8 alloy was investigated in solutions of various NaCl concentrations (0.001, 0.005 and 0.01 mol L-1). Immersion tests, optical profilometry, conventional and local electrochemical analyses were performed to evaluate the corrosion behaviour of the alloy. Immersion tests showed that the alloy is susceptible to SLC in all conditions, although the pits sizes were dependent on the solution concentration. The largest anodic areas, corresponding to SLC sites, were observed for the sample immersed in 0.001 mol L-1 NaCl, whereas pits with similar sizes were observed for the samples immersed in solutions with 0.005 and 0.01 mol L-1 of NaCl. Moreover, the maximum depth of attack was observed for the sample immersed in 0.001 mol L-1 NaCl. These results were in agreement with the scanning ion-selective electrode technique (SIET) maps which showed stronger acidification on the sample exposed to 0.001 mol L-1 NaCl solution. (AU)

FAPESP's process: 18/06880-6 - Use of Localized Electrochemical Techniques for the Study of Corrosion of of High Strength Aluminum Alloys Joined by Friction (FSW).
Grantee:Rejane Maria Pereira da Silva
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 13/13235-6 - Investigation on the localized corrosion and the fatigue corrosion resistance of high strength aluminum alloys joined by friction stir welding (FSW)
Grantee:Isolda Costa
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 17/03095-3 - Investigation on corrosion susceptibility of Al-Cu-Li alloys by friction stir welding (FSW) through scanning vibrating electrode technique (SVET)
Grantee:Uyime Donatus
Support Opportunities: Scholarships in Brazil - Post-Doctoral