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Organic corrosion inhibitors for mild steel in aerated near neutral chloride solutions
Conference paper   Open access

Organic corrosion inhibitors for mild steel in aerated near neutral chloride solutions

S.H. Tan, G.T. Hefter and N.A. North
Australasian Corrosion Association
30th Australasian Corrosion Association Conference (Auckland, New Zealand, 19/11/1990–23/11/1990)
1990
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Abstract

Over 120 organic compounds have been investigated as potential corrosion inhibitors for mild steel in simulated engine coolants. A relationship has been found between the corrosion potential (Ecorr) and inhibitor performance (Rp). With straight chain alkyl carboxylates, maximum inhibition was found for C6- C10 monocarboxylates and C7- C12 dicarboxylates. Polarization curves for selected inhibitors and the Ecorr- Rp relationship suggest these compounds affect only the anodic dissolution. The inhibitor effectiveness of sebacate was found to be unaffected by stirring or the presence of corrosion products.

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