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Which effect of current is used as electroplating |
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Answer» Answer: Electroplating is a process that uses an electric current to reduce dissolved metal cations so that they form a thin coherent metal coating on an electrode. The term is also used for electrical oxidation of anions on to a solid substrate, as in the formation of silver chloride on silver wire to make silver/silver-chloride electrodes. Electroplating is primarily used to change the surface PROPERTIES of an object (such as abrasion and wear RESISTANCE, corrosion PROTECTION, lubricity, aesthetic qualities), but may also be used to build up thickness on undersized parts or to form objects by electroforming. The process used in electroplating is called electrodeposition. It is analogous to a concentration CELL acting in reverse. The part to be plated is the cathode of the circuit. In one TECHNIQUE, the anode is made of the metal to be plated on the part. Both components are immersed in a solution called an electrolyte containing.
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