5 Questions
What is the result of direct combination between the metal and the environment in chemical passivity?
Formation of insoluble compound (passive film) on the metal surface
Which metal is protected from further corrosion by the presence of a very thin and transparent Al2O3 layer on its surface?
Aluminum (Al)
What defines passivity in the case of active anodes such as Fe, Ni, Cr, and Ti?
Corrosion resistance above a critical anodic passive potential Epass
What acts as a barrier on the anodic dissolution reaction in the formation of passivity for active anodes?
Thin protective oxide or hydroxide corrosion-product surface film
In what state do metals and alloys exist above the critical potential Epass?
Passive state
Test your knowledge on the concept of chemical passivity and its role in reducing corrosion. This quiz covers the formation of passive films on metal surfaces and the impact on corrosion rates.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
