Question

Compare galvanizing and tinning for protection of iron from corrosion​

Answer 1

Galvanizing and tinning for the protection of iron from corrosion​:

Galvanizing and tinning are used to protect the iron from corrosion or rusting.

Galvanizing:

"Galvanizing is an iron or steel sheet coating process with a thin zinc coat to avoid rusting."

• Zinc is used for coating in this process.
• As zinc is more electropositive than iron, it protects the iron from rusting.
• Galvanization helps in extending the life of steel parts by forming a layer between the metal and the air that prevents the accumulation of iron oxide on the steel layer.

Tinning:

"Tinning is a coating tin over parts of iron or steel to avoid corrosion."

• Tin is used for coating.
• The high corrosion resistance nature of tin protects the metal from rusting.
• It forms a layer of aluminium oxide that prevents corrosion. Tinplate is used for making all types of containers.