Question

post - test
corrosion that occurs when two dissimilar metals are placed in contact with each other is called:
a. filiform corrosion.
b. rust.
c. crevice corrosion.
d. galvanic corrosion.

Explanation:

Galvanic corrosion happens when two dissimilar metals are in contact in an electrolyte environment, creating an electrochemical cell. Filiform corrosion is a type of surface - corrosion in organic coatings. Rust is the common term for iron oxide formed on iron. Crevice corrosion occurs in narrow spaces or crevices.

Answer:

D. Galvanic corrosion