Adsorption of octadecyldimethylbenzylammonium chloride to two carbon steel microstructures as observed with surface-enhanced Raman spectroscopy

Journal Article · Fri Dec 01 00:00:00 EST 1995 · Corrosion

DOI:https://doi.org/10.5006/1.3293565· OSTI ID:178339

Oblonsky, L J; Devine, T M ^[1]; Chesnut, G R ^[2]

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1. Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Mineral Engineering
2. ARCO Exploration and Production Technology, Plano, TX (United States)

Adsorption of the inhibitor octadecyldimethylbenzylammonium chloride (ODBAC) to two carbon steel microstructures, one ferritic-pearlitic and one martensitic, in 0.15 M sodium carbonate (Na{sub 2}CO{sub 3}) + 0.15 M sodium bicarbonate (NaHCO{sub 3}) solution of pH 10 was investigated using surface-enhanced Raman spectroscopy (SERS). ODBAC physisorbed strongly to the ferritic-pearlitic steel and weakly to the martensitic steel. A weak metal-ODBAC bond formed between the metal surface and the ODBAC ring substituent, oriented at an inclined angle to the metal surface. Physisorption of ODBAC was found to depend upon potential, and this was correlated to the potential-dependent presence of magnetite (Fe{sub 3}O{sub 4}).

• Sponsoring Organization: USDOE
• OSTI ID: 178339
• Journal Information: Corrosion, Vol. 51, Issue 12; Other Information: PBD: Dec 1995
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CORROSION INHIBITORS
ADSORPTION
CARBON STEELS
MICROSTRUCTURE
CORROSION PROTECTION
SORPTIVE PROPERTIES
SODIUM CARBONATES
AMMONIUM CHLORIDES
SURFACE POTENTIAL