𝔖 Bobbio Scriptorium
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Corrosion of aluminium in acidic and neutral solutions

✍ Scribed by H.J.W. Lenderink; M.V.D. Linden; J.H.W. De Wit

Book ID
107750153
Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
357 KB
Volume
38
Category
Article
ISSN
0013-4686

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✦ Synopsis

Polarization and impedance measurements were performed to study the corrosion behaviour of aluminium in acidic and nearly neutral solutions. The impedance diagram shows at least three time constants or semi-circles of which the size are dependent on the electrode potential. This indicates that at least three potential dependent processes are occurring. The capacitive time constant at high frequencies may be related to the oxide film itself. The second capacitive time constant at low frequencies can be attributed to the dissolution of the oxide film.

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