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Title: Corrosion of aluminum, copper, brass and stainless steel 304 in tequila
Author: Carreon-Alvarez, A.
Valderrama, R.C.
Martinez, J.A.
Estrada-Vargas, A.
Gomez-Salazar, S.
Barcena-Soto, M.
Casillas, N.
Issue Date: 2012
Abstract: In this study corrosion rates of aluminum, copper, brass and Stainless Steel 304 (SS 304) in tequila are reported from potentiodynamic polarization and Electrochemical Impedance Spectroscopy (EIS) measurements. A simple kinetic model is proposed to analyze the polarization data and to establish a comparison with EIS measurements. For the examined metals/alloys, aluminum exhibited the highest corrosion rate of ca. 6.1 pm s-1 with a pitting corrosion tendency after being exposed to tequila (pH = 3.6). SS 304 was the most stable metal with a corrosion rate of 0.28 pm s-1. The corrosion rate trends for all the investigated metals/alloys from potentiodynamic polarization and EIS measurements are Al > Cu > brass> SS 304. © 2012 by ESG.
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