- Tytuł:
- Effect of Copper Addition on Pitting Corrosion of MA-Al
- Autorzy:
-
Aranda, B.
Cuevas, F.
Cintas, J.
Herrera-García, M.
Urban, P. - Powiązania:
- https://bibliotekanauki.pl/articles/1191707.pdf
- Data publikacji:
- 2016-04
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
81.20.Ev
82.45.Bb - Opis:
- This 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.
- Źródło:
-
Acta Physica Polonica A; 2016, 129, 4; 788-791
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł