Electroplating is the process of plating one metal over another. It is done for various purposes, most commonly for imparting corrosion resistance and decorative appearance. There are a number of advantages of this process:
- Corrosion resistance: a corrosion-prone substance such as iron can be coated with a layer of non-corrosive material, thereby protecting the original material.
- Decorative items: shine and luster can be imparted to otherwise dull surfaces. This makes for great decorative items.
- Cheaper ornaments: instead of making ornaments out of gold or silver, one can make them using cheaper metals and electroplate the ornaments with gold. This reduces the cost of ornaments greatly.
- improving mechanical characteristics: electroplating can also improve the mechanical characteristics of metals.
There are a number of disadvantages of this process as well, such as:
- Non-uniform plating: electroplating may or may not be uniform and this may result in a substandard appearance of the plated material.
- Cost: the process is costly and time consuming.
- Pollution potential: the electroplating solution, after use, needs to be disposed off safely and is a cause of environmental concern.
Hope this helps.