Question

how is corrosion prevented​

Answer 1

Answer: When any metal comes in contact with oxygen and moisture which is present  in atmosphere and forms rust,thus chemically active metals gets corroded, that process is called as corrosion.

Prevention of corrosion :

1. galvanization

2. alloy method

3.cathodic protection

4. crystalization

5. barrier coating like painting or applying plastic coating

Answer 2

corrosion is the process where the decaying of the metal results in chemical raection between it and the surrounding environment.

there are 5 types of corrosion that prevent

1. Barrier coating.

• in this method, corrosion is prevented by applying a plastic layer of resin.
• PE and polyethylene are used mostly for coating.

2. Hot deep galvanizing

• in this method, corrosion is prevented by applying a layer of zinc.
• the iron and steel metal is immersed in a bath of zinc at the temperature of 450° C.

3. Alloyed steel

• this method combines various properties of metal for providing more strength and corrosion resistance.
• the metal used to make alloys steel is nickel, chromium, silicon.

4. Cathodic protection

• in this method, corrosion is prevented by making it a cathodic side of an electrochemical cell for making it cathode anode is attached to it.
• metal is used to make anode is aluminum, zinc.

5. Eoncoat

• it is the new method of preventing corrosion by applying the inorganic water-based coating.
• it has no toxins, no odor.