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The corrosion behaviour of Al-cast iron in sulfuric acid

✍ Scribed by Dr. ir. J. N. Defrancq

Publisher: John Wiley and Sons
Year: 1976
Tongue: German
Weight: 426 KB
Volume: 27
Category: Article
ISSN: 0947-5117
DOI: 10.1002/maco.19760270506

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✦ Synopsis

Abstract

The polarisation behaviour of Al‐cast iron has been determined in sulfuric acid at 25°C and has been compared to the behaviour of classical cast iron and commercial steel in the same environment.

It was concluded from indirect electrochemical measurements (δE~corr~/δpH and δlog i~corr~/δpH) that the metal dissolution reaction was independent of pH under the given experimental conditions, and that b~A~ = 0,05 V for the three alloys. b~C~ changes from 0,116 V on steel to 0,305 V on classical cast iron and ∞ on Al‐cast iron. The B values are respectively 0,015 V; 0,019 V and 0,024 V 0,024 V.

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