2025-02-182025-02-182016-04Aranda, B., Cuevas, F.G., Cintas, J., Herrera-García, M. y Urban, P. (2016). Effect of Copper Addition on Pitting Corrosion of MA-Al. Acta Physica Polonica A, 129 (4), 788-791. https://doi.org/10.12693/APhysPolA.129.788.0587-42461898-794Xhttps://hdl.handle.net/11441/168944This paper is intended to highlight the effect of copper addition on the pitting corrosion resistance of aluminium-base powder metallurgy parts. Results obtained on these mechanically alloyed (MA) specimens are compared with parts of MA-Al without added copper, as well as with commercial aluminium alloys. Immersion tests from 2 to 96 hours in 3.5% NaCl solutions, and potentiostatic techniques, were used to study the pitting corrosion. It was concluded that copper addition, in a similar way that in commercial aluminium alloys, produces a negative effect on the pitting corrosion resistance, because of the formation of Al2Cu. These precipitates produce galvanic cells that favour the specimen pit. Therefore, increasing the copper content of MA-Al, although improving their ductility, worsens the pitting corrosion resistance of these alloys.application/pdf4 p..engAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccesshttps://doi.org/10.12693/APhysPolA.129.788