December 13, 2019

Galvanic Corrosion Prevention

In the industrial industry it is important to understand galvanic corrosion and the methods of prevention to prevent costly structural or equipment damages.

Understanding Galvanic Corrosion: Prevention and Solutions

Standing tall and resplendent in the New York Harbor, the Statue of Liberty serves as a magnificent yet poignant example of galvanic corrosion. During routine maintenance in the 1980s, it was discovered that this American symbol had fallen victim to galvanic corrosion as the copper exterior of the statue began to chemically react with its underlying wrought iron support structure.

What is Galvanic Corrosion?

Galvanic corrosion takes place when two different metals are in contact, with both electricity and electrolytes present. In this scenario, one metal begins to corrode while the other remains unaffected. Galvanic corrosion is particularly common in coastal regions due to the abundance of moisture and electrolytes from saltwater. The Statue of Liberty, constructed from both copper and wrought iron, was thus susceptible to this phenomenon, courtesy of the nearby Atlantic Ocean.

Preventing Galvanic Corrosion

Effective prevention of galvanic corrosion involves the following measures:

  1. Isolate the Two Metals: Ensure that the two dissimilar metals are physically separated to prevent contact and potential reactions.
  2. Maintain Dry Conditions: Keep both metals dry to impede the corrosion process.
  3. Avoid Exposure to Salts, Acids, or Bases: Shield the metals from contact with substances like salts, acids, or bases, which can exacerbate corrosion.
  4. Apply Coatings: Coating the materials with protective layers can significantly mitigate the risk of galvanic corrosion.

Implementing preventive measures against galvanic corrosion can translate into substantial cost savings by avoiding the need for replacement parts and extensive repairs.

Preserve Your Metal and Finances from Galvanic Corrosion

While some prevention techniques may seem complex, HJ3 offers advanced composite solutions for galvanic corrosion prevention and repair. With our cutting-edge technology, your metal assets will be shielded from galvanic corrosion, ultimately protecting both your investments and your financial resources.

To learn more about how HJ3 can assist in preventing galvanic corrosion, do not hesitate to contact us.


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