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Benzotriazole as Corrosion Inhibitor for Copper II. Acid NaCl Solutions

F. Mansfeld, Tennyson Smith

Open publisher page 109 citations

Abstract

The effect of benzotriazole on the corrosion of copper in 3% NaCl at pH3 has been studied by immersion tests, potentiostatic polarization, a.c. impedance measurements and ellipsometric investigations. Results show that a thin layer of BTA forms in neutral solutions but that, in acidic solutions, the film is covered with a porous salt film which can be easily wiped off. Results seem to indicate that BTA interacts with the copper surface only when it is covered with some oxide. See also AATA 9-379. -- AATA

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What this paper is about

The effect of benzotriazole on the corrosion of copper in 3% NaCl at pH3 has been studied by immersion tests, potentiostatic polarization, a.c. impedance measurements and ellipsometric investigations. Results show that a thin layer of BTA forms in neutral solutions but that, in acidic solutions, the film is covered with a porous salt film which can be easily wiped off. Results seem to indicate that BTA interacts with the copper surface only when it is covered with some oxide. See also AATA 9-379. -- AATA

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Available abstract

The effect of benzotriazole on the corrosion of copper in 3% NaCl at pH3 has been studied by immersion tests, potentiostatic polarization, a.c. impedance measurements and ellipsometric investigations. Results show that a thin layer of BTA forms in neutral solutions but that, in acidic solutions, the film is covered with a porous salt film which can be easily wiped off. Results seem to indicate that BTA interacts with the copper surface only when it is covered with some oxide. See also AATA 9-379. -- AATA

Key concepts: Benzotriazole, Copper, Corrosion inhibitor, Erosion corrosion of copper water tubes, Corrosion, Chemistry, Nuclear chemistry, Inorganic chemistry

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