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ChemInform Abstract: Aluminum and Aluminum Alloy Dissolution in Concentrated Phosphoric Acid.

✍ Scribed by Roberto Vidal; Alan C. West

Publisher
John Wiley and Sons
Year
2010
Weight
30 KB
Volume
30
Category
Article
ISSN
0931-7597

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✦ Synopsis

Aluminum and Aluminum Alloy Dissolution in Concentrated Phosphoric Acid.

-The electrochemical behavior and surface-finish of Al and Al alloys (3003 and 6063) in conc. H 3 PO 4 is similar. Under all conditions a large limiting current plateau is measured, but the limiting current density only follows a Levich behavior at high temperatures. The surface varies from matte at low temp. to polished at high temp. with a transition near 65 β€’ C. The impedance, polarization, and Arrhenius behavior of the system is compared with that found for Fe and Cu dissolution in conc. H 3

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