What is Electroless Nickel Plating?
Electroless nickel plating (EN) is a layer of nickel-phosphorus alloy on a metal or plastic substrate, and has better ability of anti-wear, anti-friction and anti-corrosion compared with electroplated nickel. The phosphorus content ranged from 2% to 13% in EN can define below three types:
1.) Low phosphorus EN:
Widely applied for CNC parts which required uniform thickness nickel plating inside as well as its outside.
2.) Medium phosphorus EN:
Most seen in industrial, electronic applications or decorative purpose. The thicker electroless nickel plating, the brighter, vise versa.
3.) High phosphorus EN:
Best corrosion resistance for CNC precision parts which required ability of against highly corrosive acidic environments. Best surface finish with minimize porosity and nearly pit-free.
Below photo showed workpieces with electroless nickel plating(left) and electroplated nickel(right).
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