The right plating can make electronic parts have better conductivity, protect them against corrosion and not wear out as quickly. The right finish will depend on what your parts need and where they’ll be used.
Silver Plating
Silver plating has been around since the 1800s and is great for parts like switches and connectors because it handles heat well and resists corrosion. The downside is it can look tarnished, so sometimes extra coatings are needed to keep it looking nice.
Copper Plating
Copper is cheap, a good conductor and it is used as a base layer for other platings like nickel or chrome. You’ll see it on printed circuit boards and wiring. Oxidisation is a problem, so a protective coating is often added.
Electroless Nickel Plating
Electroless nickel plating, like the examples seen here, https://www.swmf.co.uk/surface-coatings/electroless-nickel-plating/ gives an even coating, even on tricky shapes. It’s strong, hard, and resists corrosion and used for making connectors, switches and semiconductors.
Cadmium Plating
Cadmium protects parts from corrosion, works well with paints and has low friction for moving parts. It’s used on aerospace fasteners, connectors and switches.
Aluminium Anodising
Anodising isn’t metal plating, but it changes the surface of aluminium into a hard, corrosion-resistant layer. It’s applied to heat sinks, housings and some alloys like titanium.
How to Choose the Right Plating
Choosing the right plating depends on what material you’re coating, the environment, the performance you need and how long you want the part to last. Matching the right process to the job can make the electronics safer and more reliable.
