The performance of API-5L-X65 carbon steel in saturated-CO2 erosion-corrosion environments was
studied using a Box–Benhnken design of experiments with three important variables (sand loading,
velocity and corrosion inhibitor), which affect the performance of material in a flowing environment as
has been widely reported. Those variables were studied at low, intermediate and high level, referred to
in this study as -1, 0, and +1 respectively. This methodology not only allows assessment of each effect
on the total erosion-corrosion damage, here referred to as the total weight loss (TWL) to be determined
but also the interaction of those parameters on the damage caused by erosion-corrosion and their
interaction. Post surface analysis using SEM was conducted to enable the degradation mechanisms to
be described.
Keywords: Total weight loss, sand loading, velocity, corrosion inhibitor, current density