Asia Research News 2021

Page 9

The nitty gritty of corrosion

In the early stages of corrosion, the scientists anticipate that a loose, thin layer of rust forms that is easily penetrated by chloride ions and precipitation, creating a wet, corrosive environment on the metal’s surface. After five years, the rust layer has thickened, making it difficult for chloride ions and rain to seep in. However, long-term humidity in the region helps form a corrosive microenvironment on the metal’s surface, causing corrosion to continue.

Akashi Kaikyō Bridge, Kobe, Japan