Corrosion monitoring of fuel system materials resulting from the use of bio heavy oil

Abstract

To achieve the 2050 carbon neutrality goal, bio heavy oil is being explored as a substitute for conventional fossil fuels. Although bio heavy oil can reduce carbon emissions and serve as a sustainable energy source, its distinct chemical and physical properties may lead to unique corrosion issues in fuel oil systems. This study monitors the surface corrosion of fuel system materials over time due to the use of bio heavy oil, elucidates the corrosion mechanisms, and proposes effective corrosion prevention measures. Key findings include the increase in oxygen content on the surfaces of both untreated and nitrided carbon steels, as shown by SEM and XRD analyses. Over time, corrosion products such as FeO, Fe3O4, and FeS were identified on the material surfaces. Despite the nitride carbon steel known superior corrosion resistance, it exhibited similar oxygen bonding strength to iron under the same conditions, suggesting the influence of surface conditions, bio heavy oil environment, and corrosion product types. Additional data is required for accurate analysis, considering factors such as acidity, sulfur content, and moisture content of the bio heavy oil. This comprehensive analysis will aid in understanding corrosion mechanisms and developing effective corrosion prevention strategies.