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The role of pre-treatment in the formation of a cerium conversion coating is investigated for the protection of AA2024-T3 and 7075-T6 alloys. The alloys were alkaline-etched and de-smutted in nitric acid, prior to cerium treatment in Ce(NO 3 ) 3 at 85 °C with H 2 O 2 accelerator. Potentiodynamic polarization studies in 3.5% NaCl solution revealed a large shift of ∼300 mV...
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