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2002•Huadong Li-Gong Daxue xuebaoRequires access

Mechanism of Synergistic Effect of Corrosion Inhibition on Carbon Steel with Tungstate and Benzotriazole

Yan Li

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Abstract

The synergistic effect of tungstate and benzotriazole on the corrosion inhibition of carbon steel was studied with weight loss method. It is found that there is not any synergistic effect of tungstate benzotriazole system in solutions containing 1.4×10 -3 mol/L Cl -, but the synergistic effect of tungstate and BTA can be observed after 6.2×10 -5 mol/L Zn 2+ were added to the solutions. The effect of Zn 2+ was explained with UV visible spectrum of BTA in solutions. The mechanism of synergistic effect of WO 2- 4 BTA Zn 2+ system was discussed by determination of potentiostatic polarization curves and surface analysis.

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What this paper is about

The synergistic effect of tungstate and benzotriazole on the corrosion inhibition of carbon steel was studied with weight loss method. It is found that there is not any synergistic effect of tungstate benzotriazole system in solutions containing 1.4×10 -3 mol/L Cl -, but the synergistic effect of tungstate and BTA can be observed after 6.2×10 -5 mol/L Zn 2+ were added to the solutions. The effect of Zn 2+ was explained with UV visible spectrum of BTA in solutions. The mechanism of synergistic effect of WO 2- 4 BTA Zn 2+ system was discussed by determination of potentiostatic polarization curves and surface analysis.

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Available abstract

The synergistic effect of tungstate and benzotriazole on the corrosion inhibition of carbon steel was studied with weight loss method. It is found that there is not any synergistic effect of tungstate benzotriazole system in solutions containing 1.4×10 -3 mol/L Cl -, but the synergistic effect of tungstate and BTA can be observed after 6.2×10 -5 mol/L Zn 2+ were added to the solutions. The effect of Zn 2+ was explained with UV visible spectrum of BTA in solutions. The mechanism of synergistic effect of WO 2- 4 BTA Zn 2+ system was discussed by determination of potentiostatic polarization curves and surface analysis.

Key concepts: Benzotriazole, Tungstate, Corrosion, Carbon steel, Chemistry, Inorganic chemistry, Polarization (electrochemistry), Sodium tungstate

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