How is corrosion defined?

Corrosion is accurately defined as the electrochemical deterioration of a material, primarily metals, which occurs due to reactions with their environment. This process typically involves the oxidation of metals through chemical reactions with moisture, salts, acids, and other environmental elements.

In electrochemical terms, corrosion involves the transfer of electrons from the anodic area to the cathodic area, causing one part of the metal to oxidize and lose mass while another part may simultaneously reduce or remain unchanged. This degradation process can lead to significant structural and functional failures if not properly managed and mitigated, especially in aviation and marine environments where metals are extensively used and exposed to aggressive conditions.

Understanding corrosion in this manner is crucial for implementing protective measures like coatings, cathodic protection, and regular maintenance that can prevent or slow down corrosion and extend the lifespan of the materials used in various applications.