Abstract
The corrosion behavior of Cu30Ni and МНЖМц 30-1-1 alloys in oxygen-containing chloride solutions (0.1–0.5 N NaCl) with and without Na2S additive (2–1000 mg/l) is studied with radiometric and electrochemical methods by taking into account the amount of oxygen sorbed in the course of corrosion. In blank solutions, a film of corrosion products is formed on the alloy surface; the thickness and copper content of the film increase with a decrease in chloride concentration. The corrosion rate in sulfide-containing solutions is higher than in sulfide-free ones. In the initial corrosion period, nickel compounds are accumulated in the film. With an increase in sodium sulfide concentration, corrosion accelerates. Additionally alloying the Cu30Ni alloy with manganese and iron reduces its rate by half.
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Chervyakov, V.N., Markos'yan, G.N. & Pchel'nikov, A.P. Corrosion Behavior of Copper–Nickel Alloys in Neutral Chloride and Sulfide Containing Solutions. Protection of Metals 40, 111–115 (2004). https://doi.org/10.1023/B:PROM.0000021604.92056.14
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DOI: https://doi.org/10.1023/B:PROM.0000021604.92056.14