What is electroplating and how is it useful?
Answers
Answer:
Electroplating is the process of plating one metal onto another by hydrolysis, most commonly for decorative purposes or to prevent corrosion of a metal. There are also specific types of electroplating such as copper plating, silver plating, and chromium plating. ... The surface can be a metal or even plastic.
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Explanation:
What is electroplating?
Ans: Electroplating is the coating of an object with a metal. The metal bar dissolves in the solution and plates out on the object, forming a thin but durable coating of metal. It is often used to gold-plate objects for decoration or to stop corrosion.
What are the uses of electroplating?
Ans: Electroplating is widely used in industry for coating metal objects with a thin layer different metals.
For example, metals like iron which are easily corroded by atmospheric air, moisture and oxygen are coated with deposits of nickel or chromium which are most resistant to such corrosion by electroplating method. Machinery parts are often chromium plated to protect them from corrosion and at the same time to give them good polish.
Sometimes, electroplating is done with a view to repair worn out parts of machinery. In such cases the suitable metal is deposited on affected parts of machinery by electroplating method.
Electroplating is also used in ornamentation and decoration. For example, several articles made of copper or its alloys , such as table wares, decoration pieces are coated with silver or gold.
In general the processed food items are preserved in tin coated iron cans. Tin is less reactive to food than iron. So the cans are made by electroplating tin on iron. When iron is coated with zinc metal, iron becomes more resistive to corrosion and formation of rust so zinc coated iron is used for bridges and automobiles.