Corrosion
Corrosion is the deterioration of a metal as a result of chemical reactions between it and the surrounding environment.
Both the type of metal and the environmental conditions, particularly what gases that are in contact with the metal, determine the form and rate of deterioration.
The most common example of corrosion is, of course, rust. The reddish-brown compound referred to as rust is actually iron oxide (Fe2O3), a result of reactions between oxygen and iron.
But the oxidization of iron is just one example of corrosion. Corrosion can take many forms, which are classified depending on the environmental causes. More...
Corrosion Prevention
The World Corrosion Organization estimates the global cost of corrosion to be roughly US$ 2.2 trillion annually, and that a large portion of this - as much as 25% - could be eliminated by applying simple, well-understood prevention techniques.
Corrosion prevention should not, however, be considered solely a financial issue, but also one of health and safety, as evidenced by the 1967 collapse of Silver Bridge.
An effective prevention system begins in the design stage with a proper understanding of the environmental conditions and metal properties
In virtually all situations, metal corrosion can be managed, slowed or even stopped by using the proper techniques.
Corrosion prevention can take a number of forms depending on the circumstances of the metal being corroded.
Corrosion prevention techniques can be generally classified into 6 groups: 1. Environmental Modifications 2. Metal Selection and Surface Conditions 3. Cathodic Protection 4. Corrosion Inhibitors 5. Coating 6. Plating
Environmental Modification:
Corrosion is caused through chemical interactions between metal and gases in the surrounding environment. By removing the metal from, or changing, the type of environment, metal deterioration can be immediately reduced.
This may be as simple as limiting contact with rain or seawater by
Both the type of metal and the environmental conditions, particularly what gases that are in contact with the metal, determine the form and rate of deterioration.
The most common example of corrosion is, of course, rust. The reddish-brown compound referred to as rust is actually iron oxide (Fe2O3), a result of reactions between oxygen and iron.
But the oxidization of iron is just one example of corrosion. Corrosion can take many forms, which are classified depending on the environmental causes. More...
Corrosion Prevention
The World Corrosion Organization estimates the global cost of corrosion to be roughly US$ 2.2 trillion annually, and that a large portion of this - as much as 25% - could be eliminated by applying simple, well-understood prevention techniques.
Corrosion prevention should not, however, be considered solely a financial issue, but also one of health and safety, as evidenced by the 1967 collapse of Silver Bridge.
An effective prevention system begins in the design stage with a proper understanding of the environmental conditions and metal properties
In virtually all situations, metal corrosion can be managed, slowed or even stopped by using the proper techniques.
Corrosion prevention can take a number of forms depending on the circumstances of the metal being corroded.
Corrosion prevention techniques can be generally classified into 6 groups: 1. Environmental Modifications 2. Metal Selection and Surface Conditions 3. Cathodic Protection 4. Corrosion Inhibitors 5. Coating 6. Plating
Environmental Modification:
Corrosion is caused through chemical interactions between metal and gases in the surrounding environment. By removing the metal from, or changing, the type of environment, metal deterioration can be immediately reduced.
This may be as simple as limiting contact with rain or seawater by