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Corrosion Inhibition of Cobalt with a Thin Film of Cu-BTA

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Title: Corrosion Inhibition of Cobalt with a Thin Film of Cu-BTA
Creators: Brusic, V.; Frankel, G. S.; Schrott, A. G.; Petersen, T. A.; Rush, B. M.
Keywords: cobalt corrosion
benzotriazole
thin film
Issue Date: 1993
Citation: Brusic, V.; Frankel, G. S.; Schrott, A. G.; Petersen, T. A. "Corrosion Inhibition of Cobalt with a Thin Film of Cu-BTA," Journal of the Electrochemical Society, v. 140, no. 9, 1993, pp. 2507-2511.
DOI: 10.1149/1.2220852
Abstract: Electrochemical techniques, ellipsometry and x-ray photoelectron spectroscopy were used to evaluate the use of benzotriazole, alone or in combination with boric acid/borate buffer and dilute copper sulfate for the protection of cobalt. The data indicate that in slightly alkaline solutions benzotriazole is a strong inhibitor for cobalt corrosion, whereas in water and neutral solutions it produces a barely measurable effect. In the presence of benzotriazole and Cu^+2 ions, spontaneous reduction of copper ions leads to the formation of a thin film of Cu-BTA on the cobalt surface. This film acts as a corrosion protector that is better than benzotriazole, with a significant reduction of the corrosion rate even during subsequent exposure to solutions without inhibitors.
URI: http://hdl.handle.net/1811/44644
ISSN: 0013-4651 (print)
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