No other metal coating has the combination of properties offered by electroless nickel, which is why so many industries use the coating and reap the benefits of it. As specialists in electroless nickel plating, NiTEC know that the properties of nickel plating are incredibly useful to our clients, enabling parts coated to have the highest levels of corrosion protection and hardness. Here are the top 5 great properties of electroless nickel, and why they are so important.
The metal layer deposited by the electroless nickel plating process has an even thickness over all surfaces of the component, virtually regardless of its shape. This uniform coating is the perfect solution for critical high-end engineering items such as those used in the defence, healthcare, automotive and aerospace industries.
Electroless nickel can be deposited to produce a wide range of coating thicknesses. Even when plating large and small parts and on components that are fairly complex with recessed areas, the uniformity can be can still be maintained. The range of thicknesses for electroless nickel in commercial applications is 0.1 to 5 mils, although it is possible to create deposits as thick as 40 mils.
Electroless nickel coatings are often used in functional applications because of its excellent corrosion resistance. Electroless nickel coatings are able to withstand the combination of abrasion and corrosive chemicals, even in the very corrosive conditions encountered in drilling and producing oil wells.
Excellent adhesion of electroless nickel deposits can be achieved on a wide range of substrates, including steel, aluminium, copper and copper alloys. Heat treatment at a low temperature is commonly used to improve the adhesion of electroless nickel on all metals, especially on light metals such as aluminium or titanium. During this heat treatment, diffusion can occur between the atoms of the coating and the substrate. The surface preparation and activation of the electroless nickel plating is one of the most important factors for producing excellent adhesion.
Tight Manufacturing Tolerances
Tight manufacturing tolerances can be achieved as the electroless nickel is deposited evenly on the surface of the part. It can be also used to improve the surface of a component so that it is back within the specified tolerances, and provides a surface that allows post finishes to be carried out effectively.
Chip Free Coating
When using electroless nickel to plate a component, the coating provided is guaranteed not to chip or flake like other top coats such as paints or lacquers.