API 571 Practice Questions - API 571 Corrosion And Materials Exam

What does passivation mean for a corrosion-resistant alloy?

Hydrogen is removed from the metal by heat treatment The alloy becomes immune to all chloride attack A sacrificial anode is attached to the equipment A thin protective surface film forms and slows further corrosion

Correct Answer:

A thin protective surface film forms and slows further corrosion

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