👉 In the context of science and engineering, corrosion is a process in which materials or substances are exposed to an environment that causes them to lose their ability to resist chemical or electrical damage. This can occur due to various factors such as exposure to water, air, moisture, or other chemicals. Corrosion occurs when there is an imbalance between the amount of dissolved oxygen and the amount of corrosion products (such as rust) in a material. The oxygen in the atmosphere is usually abundant, but if it