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Corrosion inhibition of mild steel in hydrochloric acid by 6-aminohexanoic acid

✍ Scribed by M. Abdeli; N. P. Ahmadi; R. A. Khosroshahi

Publisher
John Wiley and Sons
Year
2009
Tongue
German
Weight
274 KB
Volume
61
Category
Article
ISSN
0947-5117

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✦ Synopsis

Abstract

The inhibiting behavior of 6‐aminohexanoic acid (C~6~H~13~NO~2~) on mild steel corrosion in 1 M HCl as corroding solution at 25 °C was evaluated by weight loss, polarization, and electrochemical impedance spectroscopy (EIS) methods. The weight loss, polarization, and EIS measurements were relatively in good agreement together. Results obtained by the three methods showed that the inhibition efficiency (%IE) increases with increasing the concentration of 6‐aminohexanoic acid up to 6.86 × 10^−05^ M (about %IE = 80). It was also found that the adsorptive behavior of the investigated inhibitor on the steel surface followed Langmuir‐type isotherm, the 6‐aminohexanoic acid acted as a mixed type inhibitor and its inhibition mechanism obeys from the chemisorption interaction between 6‐aminohexanoic acid and the mild steel.

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