Inhibitive effects of inhibitors on the galvanic corrosion between N80 carbon steel and 13Cr stainless steel under dynamic supercritical CO^sub 2^ conditions

The inhibitive effects of imidazoline (IM), 1-butyl-2-thiobenzylbenzimidazole (BTBBI) and lauric acid (LA) on the galvanic corrosion between N80 carbon steel and 13Cr stainless steel in oilfield produced water under dynamic supercritical CO2 conditions were studied by weight loss and electrochemical measurements, and surface analysis. It is demonstrated that IM, BTBBI and LA could alleviate the galvanic corrosion of N80 carbon steel coupled with 13Cr stainless steel with the order of inhibitive effects: IM > BTBBI > LA. However, the galvanic effect between N80 carbon steel and 13Cr stainless steel decreases the inhibitive effects of inhibitors.