Strict environmental legislations have led to the development of green inhibitors in recent years. In continuation of our research work on development of green inhibitors, we have investigated the aqueous extracts of three plants namely: Azadirachta indica, Punica Granatum and Momordica charantia as corrosion inhibitors for mild steel in 3% NaCl using weight loss and electrochemical methods, All the investigated compounds exhibited excellent corrosion inhibition properties comparable to that of HEDP. Azadirachta showed better scale inhibition effect than HEDP.
Kevwords: Corrosion, Inhibitor, Cooling System, A. C. Impedance, Potentiodynamic