The Effect of Linear Alkyl Benzene Sulfonate on Corrosion of Aluminum, Zinc and Lead in 1M HCl.

Abstract

In this work, the corrosion behavior of aluminum, lead and zinc was investigated
in 1M HCl solution containing various concentrations (0,03 10-4, 1 10-3, 1.67 10-3,
3.34 10-3M) of linear alkyl benzene sulfonate (LAS) at various temperatures ranging
(295-325)K, for this purpose, the weight loss measurements and microscope study were
achieved and the corrosion rates of the three metals were determined in (1-2)hour.
According to the results obtained in this investigabion, LAS in 1M HCl acts on (Al, Pb,
Zn) as an inhibitor, corrosion protection get to 90.4% for Al at 325K by using 3.34 10-3
M LAS, and get to 87.5% for Pb at 325K by using 3.34 10-3M LAS, and get to
maximum protection 76.12% for Zn to 308K by using 0.334 10-3M.