ffects of Ag addition and dendritic scale on the corrosion behavior of the hypoeutectic Al-5wt% Si allo

Autor(es)

Gomes, Leonardo Fernandes ^[1] ; Kugelmeier, Cristie Luis ^{[1, 2]} ; Della Rovere, Carlos Alberto ^{[1, 2]} ; Spinelli, Jose Eduardo ^[3]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, Grad Program Mat Sci & Engn, BR-13565905 Sao Carlos, SP - Brazil

^[2] Univ Fed Sao Carlos, Munir Rachid Corros Lab, Dept Mat Engn, BR-13565905 Sao Carlos, SP - Brazil

^[3] Fed Univ Sao Carlos UFSCar, Dept Mat Engn, BR-13565905 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Applied Electrochemistry; v. 52, n. 4, p. 653-665, APR 2022.
• Citações Web of Science: 0

Resumo

The addition of silver in hypoeutectic Al-Si alloys have been demonstrated to have promising mechanical and electrical properties. However, the relationships between corrosion behavior and microstructure are yet to be determined for Al-Si(-Ag) alloys, which restricts their wider application. Therefore, this study evaluates the impact of Ag addition (0.1 and 2.0 wt%) on the microstructural pattern of the Al-5.0wt%Si alloy and explores the effect of the secondary dendrite arm spacings, lambda(2), and interdendritic phase distribution, on the corrosion properties. Among the three alloys, the Al-5.0wt%Si-0.1wt%Ag alloy exhibited the highest corrosion resistance and largest passivity intervals, in addition to having a high mechanical strength for smaller lambda(2). {[}GRAPHICS] . (AU)

• Processo FAPESP: 19/23673-7 - Avaliação de ligas para juntas térmicas e para manufatura aditiva
• Beneficiário: José Eduardo Spinelli
• Modalidade de apoio: Auxílio à Pesquisa - Regular