What Does Corrosion Protection Method Mean?
A corrosion protection method is a technique used to minimize corrosion such as the application of anti-corrosion coating, cathodic protection or other methods that make metal resistant to corrosion.
Metal corrosion in almost all situations can be slowed, managed or even put to a stop utilizing the right techniques. These preventive methods are available in many types, and are deployed depending on the instances involved in a corroding metal.
Corrosion protection methods are also known as corrosion control.
Corrosionpedia Explains Corrosion Protection Method
Corrosion can be prevented by having a good understanding of the conditions that contribute to corrosion. Making the right decision in the kind of metal to use could also lead to a significant reduction in terms of corrosion. Proper observation and eradication of defenseless surface conditions can be crucial in protecting metals from the deteriorating effects of corrosion.
Techniques for corrosion prevention can be categorized into six basic groups:
- Surface condition and metal selection
- Environmental modifications
- Protective coating
- Cathodic protection
- Corrosion inhibitors
Protective coatings can also be used to give protection to metals from certain factors like the damaging effect of gases in the environment. Such coatings can be powder, water soluble or epoxy coatings.
In cases of galvanic corrosion, cathodic protection systems are widely employed. This is the method used most often when two dissimilar metals are in a corrosive environment or electrolyte such as seawater. This type of corrosion protection converts undesirable anodic sites found on the surface of the metal to cathodic sites.
In other cases, the use of corrosion inhibitors is necessary. These are chemicals that produce a reaction on the surface of the metal or the environment, which stops the chemical action leading to corrosion.
Lastly, plating or metallic coating can also be applied not only to preserve aesthetic finishes, but to inhibit corrosion as well. Coating can be applied by:
- Mechanical plating
- Hot dipping
- Electroless plating