ELECTROPLATING PROCESS

ELECTROPLATING PROCESS

Principle of electroplating process: In the process of electroplating, a thin layer of a metal is deposited on another metal part with the object of corrosion prevention, or to ensure that the electroplated part looks nice and aesthetic. The part is usually electroplated with gold, silver, chromium or nickel because these platings look nice and do not tarnish.

The principle of electroplating is simple. If two electrodes are immersed partially in a suitable electrolyte and a direct current is passed by joining the two electrodes in an external circuit, the metal from the anode gets transferred through electrolyte-action on the cathode. A simple arrangement for electroplating is shown in Fig.

Electroplating is a metal deposition process. The amount of metal deposited can be calculated easily, it is remembered that 96500 coulombs of electrical charge (1 coulomb = 1 amp current × 1 second) deposits one electrochemical equivalent of the substance at the electrode, irrespective of what the substance is. 

Electrochemical equivalent of a substance is equal to Atomic weight of the substance per Valency

ELECTROPLATING PROCESS
ELECTROPLATING PROCESS



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