Question

Explain electroplating with suitable examples.

Answer 1

In Electroplating, both an anode and a cathode (the metal part to be coated) are immersed in an electrolytic bath that's composed of an answer of salts, including the metal to be plated. an immediate current (DC) of electricity is skilled in the answer, effecting the transfer of metal ions onto the cathodic surface, plating the metal onto the item.

Complete step by step answer:
Electroplating may be a general name for processes that make a metal coating on a solid substrate through the reduction of cations of that metal by means of an immediate current. The part to be coated acts because the cathode (negative electrode) of an electrolytic cell; the electrolyte may be a solution of a salt of the metal to be coated; and therefore the anode (positive electrode) is typically either a block of that metal, or of some inert conductive material. the present is provided by an external power supply.

a good example to demonstrate the aim of electroplating is an application within the medical devices industry. tons of components for medical devices are created with nickel. Nickel, however, isn’t alleged to inherit direct contact with the physical body. So to stop that contact from occurring, a coating of palladium or gold is applied to the nickel surface.
Examples:
Copper plating of semiconductors: Various plating options are utilized in the industry. Copper plating is usually used to increase the power of semiconductors and circuits to conduct electricity.
Nickel plating of hard drives: Nickel may be a magnetic metal, which is an important property for hard drives. Hard drives require magnetism to enhance disc reading, so hard drives are commonly electroplated with nickel during the manufacturing process.
Some of the opposite common applications of electroplating involve:
• Improving wear resistance.
• Improving the thickness of the metal surface.
• Enhancing the electrical conductivity like plating a copper layer on an electrical component.
• Minimizing Friction.
• Improving surface uniformity.

Note:
Several the foremost commonly used metals for electroplating include:
• Copper: Copper is usually used for its conductivity and warmth resistance. It's also commonly wanted to improve adhesion between layers of fabric.
• Zinc: Zinc is very corrosion resistant. Often, zinc is alloyed with other metals to reinforce this property. For instance, when alloyed with nickel, zinc is especially immune to atmospheric corrosion.
• Tin: This matte, bright metal is very solderable and corrosion resistant also as environmentally friendly. it's also inexpensive compared to other metals.
• Nickel: Nickel offers excellent wear resistance, which may be improved through heat treatment. Its alloys also are very valuable, offering elemental resistance, hardness, and conductivity. Electroless nickel plating is additionally valued for its corrosion resistance, magnetism, low friction, and hardness.