SOME SURFACTANTS IN THE SERIES OF 2-(ALKYLDIMETHYLAMMONIO) ALKANOL BROMIDES AS INHIBITORS OF THE CORROSION OF IRON IN ACID CHLORIDE SOLUTION

The inhibitor effect of some surfactants in the series of 2-(alkyl(CnH 2n+1)dimethylammonio)alkanol bromides on the corrosion of iron in acid chloride medium have been investigated by steady-state electrochemica l and gravimetric methods. Results obtained show that these compounds are very good cathodic inhibitors and act on the cathodic hydrogen rea ction evolution without modifying its mechanism. High inhibition effic iencies are observed around their critical micellar concentrations and the inhibition efficiency increases with the number of carbon atoms i n the chain length.