Dicyclohexylamine nitrite as volatile corrosion inhibitor for steel in polluted environments
2005
Cano Díaz, Emilio | Bastidas, David M. | Simancas Peco, Joaquín | Bastidas Rull, José María
Carbon steel volatile corrosion inhibitor monitors (VCIM) were Ito used to study the inhibition mechanisms of dicyclohexylamine ([C6H11l2NH) and dicyclohexylamine nitrite ([C6H,11l2NH-HNO2) on carbon steel in environments polluted with 50 ppm and 250 ppm acetic acid (CH3COOH) orformic acid (HCOOH) vapors and at 100% relative humidityfor 21 days of experimentation at 25°C. Experiments were performed using the potentiodynamic polarization and the electrochemical impedance methods. Me impedance data satisfy the Kramers-Kronig relationships. The electrochemical measurements indicate that the corrosion rate decreased significantly in the acid vapors at high humidity when a volatile corrosion inhibitor was also present. © 2005, NACE International.
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