CT-3 steel corrosion inhibition ability of four amide derivatives from aliphatic acid C8÷C18.

Abstract

Inhibition ability of mild steel corrosion of 4 amides (RCONH2 (marked as A4). RCONH-CH2- CH2OH (marked as AS), RCON(CH2- CH2OH), (marked as 6b) and RCONH-(CH2)2-NH-COR (marked as 7c) prepared as derivatives from aliphatic acid oxidatively synthesized from n-paraffin of Vietnam crude oil, has been examined by electrochemical methods. The corrosion test has been performed in chloride 3% solution at room temperature. The inhibition efficiency has been evaluated through corrosion potential E_cor corrosion current i_cor and some other corrosion parameters. It is found that derivative 7c has the best inhibition ability.