Electrochemical Screening of Synergism of urfactants in the Inhibition of Corrosion of Aluminum by Silicate

ST Hirozawa; DE Coker

doi:10.1520/STP39204S

SYMPOSIA PAPER Published: 01 January 1990

STP39204S

Electrochemical Screening of Synergism of urfactants in the Inhibition of Corrosion of Aluminum by Silicate

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The passivation current obtained from galvanostaircase polarization curves indicates whether aluminum can be passivated in a given environment. The change in passivation current with increased passivation of aluminum is much more sensitive than changes in breakdown or corrosion potentials. This great sensitivity of passivation current was used to develop a rapid screening method to determine whether a surfactant was synergistic or antisynergistic with the inhibition of aluminum by silicate at elevated temperature. The passivation current was also used to screen surfactants for inhibition of aluminum corrosion in the absence of silicate.

Author Information

Hirozawa, ST

BASF Corp., Wyandotte, MI

Coker, DE

BASF Corp., Wyandotte, MI

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Developed by Committee: G01

Pages: 413–424

DOI: 10.1520/STP39204S

ISBN-EB: 978-0-8031-5559-6

ISBN-13: 978-0-8031-1406-7

Electrochemical Screening of Synergism of urfactants in the Inhibition of Corrosion of Aluminum by Silicate

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