What is the main consequence of the oxidation of iron?

The main consequence of the oxidation of iron is rusting, which is a specific type of corrosion that occurs when iron reacts with moisture and oxygen in the environment. When iron oxidizes, it forms iron oxides, primarily hydrated iron(III) oxide, commonly known as rust. This process not only changes the chemical composition of the metal but also impacts its physical properties.

Rusting leads to a deterioration of the iron's surface, creating a flaky, brittle layer that can progressively weaken the material. Over time, this can cause structural issues in iron or steel components, reducing their effectiveness in applications such as construction or machinery. Therefore, understanding rusting as the consequence of iron oxidation helps in implementing preventive measures such as painting, galvanizing, or using stainless steel in order to extend the life and maintain the integrity of iron products.