Corrosion is the gradual destruction of metals due to environmental interactions, resulting in metal compounds from chemical reactions. Examples include rusting and the corrosion of copper and silver, which can be mitigated through various protective coatings and treatments such as galvanizing and electroplating. Notably, the Iron Pillar of Delhi, over 1600 years old, has resisted rusting due to a protective oxide film.

1. CORROSION

2. WHAT IS CORROSION ??
• Corrosion is defined as the slow and steady
destruction of a metal by the environment.
It results in the deterioration of the metal to
form metal compounds by means of chemical
reactions with the environment.

3. EXAMPLES OF CORROSION
• Rusting

4. Corrosion of Copper

5. Corrosion of silver
• Silver sulphide

6. PREVENTION OF CORROSION
• Corrosion of metals can be prevented by coating the
metals with something that does not allow moisture
and oxygen to react with it.
• Coating of metals with paint, oil, grease prevents the
corrosion of metals.

7. • Galvanizing
• Electroplating

8. • Anodising

9. • Tinning
• Alloying

10. • IRON PILLAR OF DELHI
• It is a1600year old pillar. The rusting has
been prevented because of the formation of
a thin film of oxide of iron on the surface of
the pillar.

12. BY ; CHEMIBLASTERS