Multiple choice

In which of the following corrosions, the boundaries of crystallites of the material are more susceptible to corrosion than their insides?

  1. Intergranular corrosion

  2. Biogenic sulfide corrosion

  3. Hot corrosion

  4. Crevice corrosion

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A Correct answer
Explanation

Intergranular corrosion (IGC), also known as intergranular attack (IGA), is a form of corrosion where the boundaries of crystallites of the material are more susceptible to corrosion than their insides.