Corrosion Terminology

  • Define corrosion.

  • Understand some basic terminology related to the corrosion.

  • Distinguish between oxidation and reduction reactions.

  • State which reaction occurs at the anode and which at the cathode.

  • Cathode: The electrode at which reduction occurs.

  • Anode: The electrode at which oxidation occurs.

  • Oxidation: The loss of electrons.

  • Reduction: The gaining of electrons.

  • Cation: Positive ion

  • Anion: Negative ion

Solved Examples

Solved Example:

58-1-01

Indicate the false statement about corrosion.

Solution:
The corroded member in a corrosion cell is the anode.

Correct Answer: B

Solved Example:

58-1-02

Electrochemical corrosion takes place on:

Correct Answer: A