Chemical nickel plating has a wide range of applications and can be plated on different substrates. Different process flows should be adopted for different substrates.
Author: Marisa
Chemical nickel plating has a wide range of applications and can be plated on different substrates.
The following measures should be taken for different substrates:
1) The substrate itself has catalytic effect, such as iron and nickel, which can be directly electrolessly plated with nickel.
2) Metals such as aluminum and magnesium with negative potential than nickel are best treated with zinc before electroless nickel plating, and then electroless nickel plating.
3) Stainless steel substrates should be flash plated with a layer of nickel before electroless nickel plating.
4) Metals with positive potential and no catalytic effect, such as copper and its alloys, high-strength iron alloys, etc., should first be contacted with the surface of the parts with pre-treated iron wire or aluminum wire to turn it into a short-circuit battery so that the electroless nickel plating can react smoothly.
5) Non-metallic materials such as ceramics, glass, plastics, etc. should undergo careful roughening and activation processes before they can be smoothly electrolessly plated with nickel.