Effect of cathodic protection methods on ferrous engineering materials under corrosive wear conditions

Abstract

ABSTRACT Cathodic protection prolongs the service life of fluid transport and offshore engineering components by suppressing corrosion. This study assesses the effect of two cathodic protection methods, such as impressed current cathodic protection (ICCP) and sacrificial anode cathodic protection (SACP), on three ferrous-based materials under laboratory-controlled corrosive wear conditions. The SACP was as effective as ICCP on the protection of the low alloy steel and white chromium cast iron under both solid and solid-free corrosive wear conditions. Under solid–liquid impingement, significant reductions in the material loss were also observed in both the direct impingement zone and the outer area (oblique angle of attack). This demonstrates the substantial impact of cathodic protection systems that are exposed to erosion–corrosion dominated environments.