Question

What is corrosion? How can metal are protected from it?

Answer 1

Answer:

Corrosion is a natural process that converts a refined metal to a more chemically-stable form, such as its oxide, hydroxide, or sulfide. It is the gradual destruction of materials (usually metals) by chemical and/or electrochemical reaction with their environment........

One simple way to prevent corrosion is to use a corrosion resistant metal such as aluminum or stainless steel. Depending on the application, these metals can be used to reduce the need for additional corrosion protection.

Answer 2

Answer:

Slowly eating away of metal by the action of air and moisture on their surfaces is known as corrosion.

Metals can be protected by :

paint,galvanisation,oils and greases,coating with nickel or chromium electrolytically and formong alloys etc.