(b) Figure 1 shows a schematic diagram of the corrosion mechanism which involved steel structure. air Na 0, Na он он shield FelOH), H' H Fe passive film steel Figure 1: Corrosion mechanism (1) Identify the type of corrosion according to the schematic diagram shown in Figure 1. Justify your answer by explaining the corrosion mechanism. (ii) Suggest the methods to prevent the corrosion shown in Figure 1.

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Classification of types of corrosion

Corrosion is described as the process in which a certain element is degraded or deteriorated due to the presence of multiple chemicals in the surrounding. Generally, corrosion happens if all the subatomic particles on a metallic object are oxidized, for example, rust on iron structures. In air or water, metals lose electrons to other particles (like oxygen), leading to the formation of an oxide with the metal.