The practice of applying a thin layer of gold to the surface of another metal substrate, known as gold plating, is a common technique used to enhance both the aesthetic appeal and the properties of the underlying material. For example, a base metal such as copper or nickel can be coated with a thin layer of gold to create items that appear luxurious without the cost associated with solid gold construction. This electroplating process deposits a layer of gold typically measured in microns, providing a superficial gold finish.
The value proposition of gold plating lies in its ability to impart certain advantages. Historically, it has been utilized to provide corrosion resistance, particularly in electronic components where oxidation can degrade performance. Furthermore, the visual appeal of gold provides an attractive aesthetic at a fraction of the price of solid gold. The durability of the plating is dependent on the thickness of the gold layer and the type of base metal used. While not as robust as solid gold, a well-executed plating can offer considerable resistance to wear and tear in certain applications.