Effects of Corrosion Inhibitors and Flow Rate on the Corrosion Resistance of Ductile Iron Pipes

Ductile iron is widely used in pipelines and engineering applications due to its superior mechanical properties compared to gray cast iron, including higher tensile strength and fatigue resistance. However, research on its corrosion resistance remains limited. This chapter investigates ductile iron's corrosion behavior in various environments, focusing on uniform corrosion (causing wall thinning), localized corrosion (pitting), microbial corrosion (biofilm-induced), and stress corrosion cracking. Environmental factors like salinity, oxygen levels, and temperature fluctuations significantly influence corrosion rates. The study aims to elucidate corrosion mechanisms to enhance material durability in practical applications, addressing a critical gap in current research.