Question

What is corrosion? Explain its advantages and disadvantages.

Answer 1

Corrosion

• Corrosion is a natural process.
• It transforms pristine metals into unwanted compounds when they contact with elements such as water or air.
• One of the main examples of corrosion is Rusting iron.

Advantages

• Corrosion-resistant layer: A layer of oxide forms on the corrosion-resistant surface. prevents corrosion of the inner metal. Coating of zinc or aluminum over taps.
• Zinc sacrificial anodes: These are employed as a corrosion preventative method for other metals. Coating of zinc over utensils.
• Galvanic corrosion: When two different types of metals are in electrical contact in an electrolyte, the more active metal tends to corrode. Coating of iron with zinc.

Disadvantages

• Metal loss from the surface
• A metal object's physical appearance changes.
• Metal's chemical characteristics vary.
• Meanwhile, the effectiveness of metallic machinery is deteriorating.
• Metal things have a shorter lifespan.