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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.)

Comparison of the corrosion resistance of an Al-Cu alloy and an Al-Cu-Li alloy

Full text
Author(s):
Milagre, Mariana X. [1] ; Donatus, Uyime [1] ; Machado, Caruline S. C. [1] ; Araujo, Joao Victor S. [1] ; da Silva, Rejane Maria P. [1] ; de Viveiros, Barbara Victoria G. [1] ; Astarita, Antonello [2] ; Costa, Isolda [1]
Total Authors: 8
Affiliation:
[1] IPEN, CNEM, Ctr Ciencia & Tecnol Mat, Av Prof Lineu Prestes 2242, BR-05508000 Sao Paulo, SP - Brazil
[2] Univ Naples Federico II, Dept Chem Mat & Ind Prod Engn, Naples - Italy
Total Affiliations: 2
Document type: Journal article
Source: CORROSION ENGINEERING SCIENCE AND TECHNOLOGY; v. 54, n. 5, p. 1-11, APR 2019.
Web of Science Citations: 2
Abstract

In this study, the corrosion mechanisms of the AA2024-T3 and the AA2098-T351 were investigated and compared using various electrochemical techniques in 0.005 mol L-1 NaCl solution. The severe type of corrosion in the AA2098-T351 was intragranular attack (IGA) although trenching and pitting related to the constituent particles were seen. On the other hand, the AA2024-T3 exhibited severe localised corrosion associated with micrometric constituent particles, and its propagation was via grain boundaries leading to intergranular corrosion (IGC). Electrochemical techniques showed that the corrosion reaction in both alloys was controlled by diffusion. The non-uniform current distribution in both alloys showed that EIS was not a proper technique for comparing the corrosion resistance of the alloys. However, local electrochemical techniques were useful for the evaluation of the corrosion resistance of the alloys. (AU)

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: 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: 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