What is electroplating and its uses

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What is electroplating? and its uses

• 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-chlo
  ride electrodes. Electroplating is primarily used
  to change the surface properties of an object
  (such as abrasion and wear resistance, corrosion p
  rotection, lubricity, aesthetic qualities), but
  may also be used to build up thickness on
  undersized parts or to form objects
  by electroforming.

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How exactly it works

• Learn the basics about electroplating. The anode
  is positively charged, and the cathode is
  negatively charged. They are immersed in a
  solution called an electrolyte. The electrolyte
  and the anode are selected based upon the
  material that you are electroplating with. So if
  you want to create a copper plate on the cathode,
  you would use a copper anode and a copper based
  electrolyte solution. When the battery is turned
  on, the positively charged ions in the
  electrolyte are attracted to the cathode . Here,
  they gain electrons which is known as reduction.
  When the battery is turned on, the negatively
  charged ions in the electrolyte solution are
  attracted to the anode. The atoms within the
  anode, so the copper atoms in copper plating,
  lose electrons which is known as oxidation.

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• These copper atoms are now positively charged and
  dissolve into the electrolyte solution. Once in
  the electrolyte solution, because they are now
  positively charged they are attracted over to the
  negative cathode. Hence electroplating the
  cathode. The electrons flow from the anode to the
  cathode. Half equations occur at each anode, with
  oxidation at the anode and reduction at the
  cathode. Just remember, oxidation is loss of
  electrons and reduction is gain.

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Uses of electroplating

• Protection
• Of all the benefits that electroplating has,
  protection of the metal is the most important
  benefit. Electroplating is a process, where the
  high reactive metal is covered or coated with
  less reactive metal, this eventually helps metal
  to live longer and prevent it from oxidation,
  which causes corrosion of the metal.

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Conductivity

• Gold and silver is the best conductor of
  electricity. In a complicated circuits gold and
  silver can be used for smooth currents, but as
  gold and silver are very costly, it cannot be
  used in large scale production, but here is where
  electroplating comes, the circuits are thin
  coated with this costly metals, which works same
  as gold or silver wire does. This proves very
  cost effective for businesses

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 Other important uses

• While beauty, protection from corrosion, and
  electrical conductivity are the properties most
  commonly imparted through electroplating, as
  described above, electroplating can also be used
  to reduce friction, protect from abrasion,
  protect from radiation, or otherwise impart
  desired characteristics to a surface that lacks
  those properties. Electroplating is also used not
  to impart the properties of the electroplating
  substance, but simply to control the size of
  machine parts. Electroplating allows undersized
  parts to be thickened precisely to the desired
  size.
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