Corrosion inhibition of cobalt with a thin film of Cu-BTA

Journal Article · Wed Sep 01 04:00:00 EDT 1993 · Journal of the Electrochemical Society; (United States)

DOI:https://doi.org/10.1149/1.2220852· OSTI ID:5631029

Brusic, V; Frankel, G S; Schrott, A G; Petersen, T A ^[1]; Rush, B M ^[2]

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1. Thomas J. Watson Research Center, Yorktown Heights, NY (United States). IBM Research Division
2. Univ. of California, Berkeley, CA (United States). Dept. of Chemical Engineering

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[sup +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.

• OSTI ID: 5631029
• Journal Information: Journal of the Electrochemical Society; (United States), Journal Name: Journal of the Electrochemical Society; (United States) Vol. 140:9; ISSN JESOAN; ISSN 0013-4651
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
AZOLES
COBALT
CORROSION INHIBITORS
CORROSION PROTECTION
DATA
ELEMENTS
EXPERIMENTAL DATA
FILMS
HETEROCYCLIC COMPOUNDS
INFORMATION
METALS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PERFORMANCE
PH VALUE
TRANSITION ELEMENTS