Effects of Chromate and Molybdate Ions on Scratch Repassivation Behavior of Precipitation Hardened Aluminum Alloys

B. Madden, Samuel; Moosbauer, Dominik; R. Scully, John

doi:10.1149/05030.0057ecst

Public

Effects of Chromate and Molybdate Ions on Scratch Repassivation Behavior of Precipitation Hardened Aluminum Alloys

Published in ECS Transactions • Apr 1, 2013

Authors:

Samuel B. Madden

Dominik Moosbauer

John R. Scully

Abstract

Scratch depassivation of AA2024-T351, AA7075-T6, and 99.999% aluminum in molybdate (MoO 4 2- ) and chromate (CrO 4 2- ) containing NaCl solutions was used to examine electrochemical repassivation kinetics over a range of potentials and inhibitor concentrations. Single frequency impedance measurement...

Subject

Molybdate

Chromate conversion coating

Materials science

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