Corrosion is a natural process by which a material degrades due to chemical interactions with the environment. Every year, corrosion of metallic materials leads to huge economic losses and risks to personnel in our daily life. This course aims to deliver fundamental knowledge of corrosion behavior of metallic materials (both in kinetic and thermodynamic aspects) to students. Apart from the corrosion of metallic materials, corrosion (degradation) of polymeric materials will also be introduced. Through a detailed understanding of the corrosion behaviour of various materials, a series of surface engineering techniques against corrosion, such as coating, inhibitors, passivators, etc., will be explored and discussed.