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- W2039689664 abstract "The corrosion behaviour of 7030 copper-nickel alloys in 3% NaCl solution has been investigated through the use of potentiokinetic curves, measure of the CuNi ratio in the reaction products and surface analysis by E.D.X. The anodic current-potential curves were measured after free corrosion (for up to 10 days) and it was shown that there were one or two Tafel slopes depending on the time of free corrosion. At the corrosion potential, copper was found to exist in a high concentration in solid corrosion film products and nickel in a high concentration in the solution. The percentage of copper in the total reaction products was higher than in the alloy substrate. In the Tafel region, E.D.X analysis has shown that there was a nickel enrichment of the surface of the alloy which could be related to a dealloying of the alloy. Le comportement d'un alliage Cuivre-Nickel 7030 dans une solution de NaCl à 3% a été étudié par le tracé des courbes intensité-potentiel, l'analyse quantitative du cuivre et du nickel dans les produits de corrosion (film et solution) et par l'étude de la surface par microanalyse X. Les courbes de polarisation anodique sont tracées après des temps de corrosion libre différents; elles présentent une ou deux pentes de Tafel suivant la durée de la corrosion libre. Au potentiel de corrosion, la couche de produits de corrosion est constituée en majorité par du cuivre, le nickel se retrouvant dans la solution. La proportion de cuivre dans les produits de corrosion (couche + solution) est plus importante que celle dans l'alliage. Dans la région de Tafel, la microanalyse X a mis en évidence un enrichissement en nickel de la surface résultant d'une dissolution préférentielle du cuivre." @default.
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- W2039689664 date "1984-04-01" @default.
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- W2039689664 title "Comportement de l'alliage Cuivre-Nickel dans une solution de NaCl A 3%" @default.
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- W2039689664 doi "https://doi.org/10.1016/0254-0584(84)90093-2" @default.
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