Abstract
Aqueous tetrahedrally coordinated vanadate species have been recognized as corrosion inhibitors of AA2024-T3. Inhibition is primarily attributed to the suppression of the oxygen reduction reaction on Cu-containing intermetallics. This work focuses on whether aqueous vanadates provide similar inhibition to other wrought precipitation age-hardened aluminum alloys like AA6061-T6 and AA7075-T6, which contain less Cu than AA2024-T3. A combination of open circuit potential measurements, potentiodynamic polarization experiments, and exposure tests in dilute vanadate and vanadate-free NaCl solutions indicate that vanadates provide the strongest inhibition on AA2024-T3 and AA7075-T6 with relatively less inhibition observed on AA6061-T6.
Original language | English |
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Pages (from-to) | C35-C38 |
Journal | ECS Electrochemistry Letters |
Volume | 2 |
Issue number | 9 |
DOIs | |
State | Published - 2013 |
ASJC Scopus subject areas
- Fuel Technology
- Electrochemistry
- Materials Chemistry