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The inhibition of the corrosion of ZA-27 in 1M Na2SO4 by Quaternary ammoniu salts Benzyl tri methyl ammonium chloride(BTMAC) and Benzyl tri ethyl ammonium chloride(BTEAC) has been investigated using weight loss, potentiodynamic polarization. Results obtained in weight loss studies show that these investigated compounds are good inhibitors and their inhibition efficiencies (IE %) increase with the increase of inhibitor concentration, whereas decreases with increase in immersion time and temperature. Potentiodynamic polarization studies demonstrate the inhibitors under investigation act as mixed type inhibitors and inhibitors changes the mechanism of hydrogen evolution. Effect of temperature is studied between 303 and 333 K differing by 10K. The mechanism of adsorption had been explained on the basis of chemical structure of the investigated inhibitors. It was found that there is a good agreement between the different tested techniques.

Inhibiting Action of Quaternary Ammonium Salts on the Corrosion Behaviour of Za-27 Alloy in 1m Na2so4