What is Electroplating? Definition, Working Principle, and Uses


In this blog, we are going to learn what is electroplating, its uses, and its working principle. Electroplating is done to prevent the corrosion of metals and also for decorative purposes. It is done to enhance the surface features and thickness of an object.


Uses Of Electroplating


Recall that a brand new bicycle has shiny handlebar and wheel rims. However, if these are accidentally scratched, the shiny coating comes off revealing a not-so-shiny surface beneath.


You might have also seen women using ornaments, which appear to be made of gold. However, with repeated use, the gold coating wears off, revealing silver or some other metal beneath. In both these cases, metal has a coating of another metal.


Do you wonder how a layer of one metal can be deposited on top of another? Well, let us try doing it ourselves. When an electric current is passed through the copper sulfate solution, copper sulfate dissociates into copper and sulfate.


The free copper gets drawn to the electrode connected to the negative terminal of the battery and gets deposited on it. But what about the loss of copper from the solution?

From the other electrode, a copper plate, an equal amount of copper gets dissolved in the solution. Thus, the loss of copper from the solution is restored and the process keeps going. This means that copper gets transferred from one electrode to the other.


Define electroplating


The process of depositing a layer of any desired metal on another material by means of electricity is called electroplating. It is one of the most common applications of the chemical effects of electric current.


Uses of Electroplating


  1. Electroplating is a very useful process. It is widely used in industry for coating metal objects with a thin layer of a different metal.
  2. The layer of metal deposited has some desired property, which the metal of the object lacks. For example, chromium plating is done on many objects such as car parts, bath taps, kitchen gas burners, bicycle handlebars, wheel rims, and many others.
  3. Chromium has a shiny appearance. It does not corrode. It resists scratches. However, chromium is expensive and it may not be economical to make the whole object out of chromium. So the object is made from a cheaper metal and only a coating of chromium over it is deposited. Jewelry makers electroplate
  4. Silver and gold on less expensive metals. These ornaments have the appearance of silver or gold but are much less expensive.
  5. Tin cans, used for storing food, are made by electroplating tin onto the iron. Tin is less reactive than iron. Thus, food does not come into contact with iron and is protected from getting spoilt.
  6. Iron is used in bridges and automobiles to provide strength. However, iron tends to corrode and rust. So, a coating of zinc is deposited on iron to protect it from corrosion and the formation of rust.
  7. Electroplating reduces friction.
  8. The thickness of a metal surface is increased after the process of electroplating.
  9. Electrical conductivity is enhanced with the help of electroplating.


Read More- Magnetic Field and Magnetic Field Lines | Maxwell�s Corkscrew Rule




1. What is electroplating?

The process of aligning another metal onto metal is known as electroplating. This is done with a brine solution, a battery, wires, and alligator clips that hold carbon rods attached to the metal to be electroplated and the metal to be stacked in an electroplating device.

2. Define Electroplating

The technique of applying a metal coating to the surface of a conducting material. In an electrolytic cell, the surface to be coated acts as a cathode, while the metal that will cover it acts as an anode.

3. What is electroplating short answer?

Electroplating (also known as electrodeposition) is a method of reducing cations of the desired metal in solution and forming a metallic coating using an electrical signal supplied by an external power source.

4. What is electroplating for 8th class?

Electroplating is the process of depositing a thin layer of a desired metal onto a metal object using an electric current.

5. What is electroplating with example?

The electroplating of copper is a simple example of the electroplating process, in which the metal to be plated (copper) serves as the anode and the electrolyte solution contains the metal to be plated's ion (Cu2+ in this case). As copper is plated at the cathode, it dissolves in solution at the anode.

6. What objects are electroplated?

Stove in the kitchen
Water Pipe
Water faucet
Bikes' handlebars and wheel rims
Jewellery made of synthetic materials.
Handles for doors

7. What factors affect electroplating?

A number of factors have an influence on this process. The electrodes' surface area, temperature, the type of metal and electrolyte employed, and the amplitude of the applied current are all factors to consider.�


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