What Is Gold Plating?
Gold plating is a method of depositing a thin layer of gold onto the surface of another metal, typically copper or silver. This process enhances appearance, improves conductivity, and provides corrosion resistance.
How Does It Work?
Gold plating is commonly performed using electroplating, where an electric current reduces dissolved gold ions onto a conductive surface. The steps usually include:
- Cleaning the base metal thoroughly
- Applying a strike layer (often nickel)
- Electroplating with a gold solution
- Rinsing and drying the finished piece
Common Applications
Gold plating is widely used in several industries due to its unique properties:
- Electronics: Connectors, switches, and circuit boards benefit from gold’s excellent conductivity and resistance to oxidation.
- Jewelry: Affordable alternative to solid gold while maintaining luster and prestige.
- Aerospace & Defense: Critical components require reliable performance under extreme conditions.
- Medical Devices: Biocompatibility and corrosion resistance make gold ideal for implants and surgical tools.
Benefits of Gold Plating
- High corrosion and tarnish resistance
- Excellent electrical conductivity
- Attractive, luxurious finish
- Good solderability and wire bondability
- Long service life with proper care