Rusting (6)

Chemistry

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Prevent rusting by using alloying method (4)

Stainless steel is widely used in surgical instruments and kitchen utensils

Prevent rusting by using sacrificial protection method (1)

When iron is attached to a more electropositive metal, the more electropositive metal corrodes and rusting can be prevented

Prevent rusting by using sacrificial protection method (2)

The more electropositive metal becomes a sacrificial metal

Prevent rusting by using sacrificial protection method (3)

The sacrificial metal must be replaced from time to time

Prevent rusting by using sacrificial protection method (4)

Sacrificial protection is used for corrosion protection for bridge pillars, ship hulls and underground pipes

Prevent rusting by using protective surface (1)

This method prevents iron from coming into contact with water and oxygen

Prevent rusting by using protective surface (2)

This method using paint, grease and plastic wrappings to protects the surface of iron

Prevent rusting by using protective surface (3)

This method also using other metals to prevents iron from coming into contact with water and oxygen

Prevent rusting by using protective surface - chrome plating

Used on car bumpers, bicycles, decorative items and others

Prevent rusting by using protective surface - tin plating (stanum)

Steel plates are plated with an extremely thin layer of tin

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