Multiple choice

In which of the following processes, a hard non-reactive surface film is formed which inhibits further corrosion?

  1. Galvanization

  2. Parkerizing

  3. Passivation

  4. Quench polish quench

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In the context of corrosion, passivation is the spontaneous formation of a hard non-reactive surface film that inhibits further corrosion. This layer is usually an oxide or nitride that is a few nanometers thick.