Carboxylates and sulfated carboxylates as inhibitors of steel corrosion in neutral media
Journal Article
·
· Protection of Metals
OSTI ID:171868
- Moscow State Pedagogical Univ. (Russian Federation)
Effects of carboxylates and sulfocarboxylates as well as their mixtures with o-nitrobenzoate on the corrosion of St3 steel in freely aerated distilled water and 0.01 - 0.04 M NaCl solutions (pH 7) are studied electrochemically and by the gravimetric technique. A noticeable improvement of the protective properties of sulfated mustard soap and sulfated castor oil is observed after the addition of 20 mg/l o-nitrobenzoate. Armco iron spontaneously passivates in 0.25 M CH{sub 3}COONa solution at a certain content of inhibitors and under a hydrodynamical regime. Sulfated carboxylates suppress the anodic process more strongly than do nonsulfated carboxylates.
- OSTI ID:
- 171868
- Journal Information:
- Protection of Metals, Journal Name: Protection of Metals Journal Issue: 2 Vol. 31; ISSN 0033-1732; ISSN PTNMAR
- Country of Publication:
- United States
- Language:
- English
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