Black nickel plating results in a dense black nickel finish onto any metal.
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Film thicknesses are typically 25 to 75 microns thick and produce a hard surface with readings of up to 800VPN.
The resulting finish depends on the aluminium alloy but is generally light grey.
Films can be dyed to any colour by prior agreement but black is always available.
Anodising produces an insulated surface, however this can be masked to limit the areas treated.
Hard anodising is not usually sealed after processing as this can cause the film to become brittle.
Items to be anodised require a secure electrical contact and this can result in a mark on the surface. The electrical contact point can be a tapped hole but this must be agreed before work commences.
Anodising dissolves some of the surface aluminium and the resulting growth is about half the film thickness produced.
Hard anodised films are very resistant to corrosion.
Nickel gives a hard smooth finish, which can be heat treated to a hardness of 800VPN.
It is conductive and offers good protection against corrosion and is the preferred undercoat to other plated finishes.
Black nickel plating results in a dense black finish onto any metal.
It is ideal for parts where a non-
It is thin (less than 3 microns) and if corrosion protection is required, will need a conventional nickel plated undercoat.
Electroless Nickel Plating has the advantage of giving an even coating on all surfaces.
This is due to the metal being plated without an electrical current and enables the nickel to be deposited evenly into recesses and holes.
It is even harder than electro-
Deposits of up to 80 microns can be achieved and the thickness can be controlled to produce close tolerances.
Electroless nickel is also available in a black finish.