The Effect of Cefotaxime on the Corrosion of Duralumin Alloy

Abstract

In this research , the cefotaxime(C16N5H15S2O7Na)substance has been used as an organic inhibitor to protect the duralumin alloy from corrosion in a salt bath containing (3.5% by weight) sodium chloride . The rate of corrosion was determined using the method of the loss in weight . The results showed that the cefotaxime can work as an organic inhibitor . The cefotaxime protection efficiency was ( 82.77% , 86.55% and 88.22% ) at ( 0.25 , 1.25 and 2.5 v/v ) of inhibitor concentration respectively , and the highest protection efficiency was (88.22%) at (2.5v/v) in (16) days. The results also showed that cefotaxime works as an adsorbant while its mecluleus adsorbed on the metal surface according to the Langmuir adsorption relation .