Surface analysis of inhibitor films formed in hydrogen sulfide medium

Journal Article · Sat Jun 01 04:00:00 EDT 1996 · Corrosion

DOI:https://doi.org/10.5006/1.3292133· OSTI ID:244982

Sastri, V S; Elboujdaini, M; Brown, J R ^[1]; Perumareddi, J R ^[2]

---

1. CANMET, Ottawa, Ontario (Canada)
2. Florida Atlantic Univ., Boca Raton, FL (United States). Chemistry Dept.

Steel samples exposed to a 5% sodium chloride solution containing 0.5% acetic acid saturated with hydrogen sulfide, with and without imidazole as an inhibitor, were analyzed by X-ray photoelectron spectroscopy and secondary ion mass spectrometry. The metal surface was covered initially by a layer of iron sulfide or oxide. This layer, in turn, was covered by layers in which Fe was bonded to bisulfide and C{sub 3}H{sub 4}N{sub 2} groups. Corrosion protection probably resulted from the iron sulfide or oxide formed on the metal which was prevented from going into solution and recrystallization by the thin upper layer containing C{sub 3}H{sub 4}N{sub 2}.

• Sponsoring Organization: USDOE
• OSTI ID: 244982
• Journal Information: Corrosion, Journal Name: Corrosion Journal Issue: 6 Vol. 52; ISSN 0010-9312; ISSN CORRAK
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CORROSION INHIBITORS
CORROSIVE EFFECTS
HYDROGEN SULFIDES
IMIDAZOLES
IRON OXIDES
IRON SULFIDES
PASSIVATION
PERFORMANCE
PROTECTIVE COATINGS
SODIUM CHLORIDES
STEELS