Question

what is corrosion explain in detail .​

Answer 1

Answer:

corrosion :

The eating up of a metal by the action of a moisture or chemical such as an acid on the earth surface is called corrosion

☞ corrosion of iron is a continuous process which ultimately eat up the whole iron object

☞ corrosion of iron is called a Rusting

Rusting of iron

when when an iron object is left in a damp air or water for a considerable time it gets covered with are Red Brown flaky substance called rust. This is called rusting of iron

condition necessary for rusting of iron

(1) presence of air

(2)presence of water

prevention of rusting

(1)Rusting of iron can be prevented by painting

(2) Rusting can be prevented by applying grease oil.

(3) rusting of iron can be prevented by galvanisation.

(4) Rusting of iron can be prevented by tin plating and chromium plating

(5) Rusting of iron can be prevented by alloying it to make stainless steel

Answer 2

Corrosion is when a refined metal is naturally converted to a more stable form such as its oxide, hydroxide or sulphide state this leads to deterioration of the material.

Causes

Metal corrodes when it reacts with another substance such as oxygen, hydrogen, an electrical current or even dirt and bacteria. Corrosion can also happen when metals like steel are placed under too much stress causing the material to crack.

Prevention

Use non-corrosive metals, such as stainless steel or aluminium

Make sure the metal surface stays clean and dryUse drying agents

Use a coating or barrier product such as grease, oil, paint or carbon fibre coating

Lay a layer of backfill, for example limestone, with underground piping

Use a sacrificial anode to provide a cathodic protection system.

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