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Anodic Dissolution of Cobalt Silicides in Alkaline Electrolytes |
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15.12.2008 г. |
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Anodic Dissolution of Cobalt Silicides in Alkaline Electrolytes A. B. Shein and I. L. Sergeeva Perm State University, ul. Bukireva 15, Perm, 614990 Russia Received December 16, 2003 Abstract — Anodic dissolution of cobalt silicides Co2Si, CiSi, CoSi2, CoSi2–Si (eutectic alloy), and also individual Co and Si in 0.1–5.0 N NaOH solutions is studied by using cyclic voltammetry (CVA). In alkaline electrolyte, despite the increasing activity of silicon, the electrode is passivated due to the formation of protective films of cobalt oxides and hydroxides. The anodic stability of cobalt increases with a decrease in metal content.
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