Explain galvanic corrosion and how to prevent it in mechanical assemblies.

Explain galvanic corrosion and how to prevent it in mechanical assemblies.

• A. Corrosion due to magnetic fields.
• B. Galvanic corrosion occurs when one metal protects another.
• C. Galvanic corrosion is caused by high humidity.
• D. Corrosion due to two dissimilar metals in an electrolyte; prevention by insulation, coatings, or using similar metals.

Answer: (D)