Electroplating is a great way to change the appearance and durability of an item or component. Put simply, it’s a way of coating pieces in a thin layer of metal. This introduces new properties, such as electrical conductivity, as well as increased resistance to abrasions and corrosion. Let’s learn more about the science behind this process and how it works.
Anodes & Cathodes
To begin explaining the science behind electroplating, we need to discuss the mechanisms behind it.
An electroplating set up consists of a bath, with a cathode and an anode submerged in the fluid. The anode is the metal part which contains the substance used for plating with. This could be gold, copper, brass or any other metal that you like. The cathode is the part which is to receive the plating.
The fluid inside the bath consists of chemicals and electrolytes. These take on an electrical charge, which helps the plating material (anode) to travel over to, and apply itself to the cathode.
How Electroplating Works
Now that you know what the set up looks like, it may be easier to understand the scientific process.
The anode is charged with an electrical current. This produces a reaction called oxidization, which means that the metal atoms dissolve into the chemical bath. These atoms can then attach themselves to the cathode, resulting in a plated item.
Factors That Influence Plating Results
Electroplating is a delicate scientific process. There’s many different factors that will change the outcome of the finish. The technician will need to know which voltage to use, what temperature to keep the chemical bath at, the amount of chemicals in the bath, and a few other details to ensure the outcome is as desired.
As well as all of that, the item to be electroplated will need to be prepared before carryout out the process. The surface needs to be completely clean and free of contaminants, often requiring the use of a chemical cleaning product. Any debris on the surface could affect the result, so good prep is just as important as good electroplating.
For Electroplating, Choose Broadway Metal Finishing
If you require our electroplating services, get in touch with our team today. We’re experts at metal finishing, carrying out this service daily. We have access to plenty of equipment, including large baths which are able to plate large surfaces. No matter what your project is, we’d be happy to hear about it.