Inhibition of anodic dissolution of low-carbon steel with alkyl phosphonates in borate buffer solution

Abstract

Anodic behavior of a low-carbon steel in a borate buffer solution containing C n H2n + 1PO3Na2 sodium alkyl phosphonates with n = 7–10 is studied. The passivating ability of alkyl phosphonates is shown to depend on the length of the hydrocarbon radical of the inhibitor and the exposure of the steel in the solution.