Oxidant Reductant

Posted onFebruary 09, 2012 - 9:58 pm by Admin | 0 Comments

Corrosion is a chemical reaction that occurs when a base material is exposed to an environmental agent. In metals, corrosion occurs when the metal atoms lose electrons due to reactions with water or oxygen. The base metal is converted to an oxide or salt compound, depending on the metal and the environmental agent. Corrosion in its most well-known form is rust, in which iron or steel reacts with air or water to form iron oxide, a reddish flaky material on the surface of the ferrous metal.

How Corrosion Occurs in Aircraft Fuselage Lap Joints

Aircraft fuselages are constructed from lightweight aluminum, which is much more resistant to general air and water corrosion than iron, in addition to its many other benefits. Aluminum, like stainless steel and titanium, forms a very thin oxide layer when exposed to air, and this layer actually acts to protect the metal from further corrosion.

Aircraft can be exposed to a variety of corrosive elements while in the air and on the ground. Aircraft that fly near or over ocean areas are exposed to water vapor with a high salt content. Aircraft in locations prone to cold weather are often exposed to deicing fluid to prevent icing during flight. Even normal rainfall has an acidic component that can result in corrosion.


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