Wednesday, September 05, 2012

Gold Plating

  • By chemical or electro-chemical plating, a thin layer of gold deposit onto the surface of another metal, mostly copper or silver (to make silver-gilt).
  • Gold plating of silver is used in the manufacture of jewelry.
  • In electronics, to provide a corrosion-resistant electrically conductive layer on copper in electrical connectors and in printed circuit boards gold plating is employed.
  • A readymade gold plating salt is available in market in which the required proportion of the chemicals are mixed which can also be utilized for the purpose.
  • Plating of gold is often found in microelectronic devices for air-bridges, heat-sinks and gold bumps for flip-chip techniques.

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