Electroless Nickel Plating
Electroless nickel plating is a chemical process that deposits an even layer of nickel-phosphorus alloy on the surface of a solid substrate.
Unlike electroplating, electroless plating processes in general do not require passing an electric current through the bath and the substrate; the reduction of the metal cations in solution to metallic is achieved by purely chemical means, through an autocatalytic reaction.
Nickel plating is a cost-effective and extremely viable alternative to chrome plating. It is corrosion resistant offering excellent wear and can be fortified by extreme heat treatments.
Where chrome plating has poor throwing power meaning that it is often difficult to create a uniform coating, nickel plating creates an even coating on a part’s surface. Nickel plating also has flexibility in plating volume and thickness, which means the plating process can plate recesses and blind holes with stable and uniform thickness.
Advantages
· Excellent corrosion resistance
· Production proven process with good through-put and plating speed
· Non-Ammoniated system operation option available
· Chemistry provides long operating life with outstanding stability
Typical Applications
Wear resistance and hardness for complex components
Electrical/mechanical tools
Oil field valves
Drive shafts
Electrical/mechanical tools
Specifications
- AMS 2404
- ASTM B733
- AMS-C-26074 (MIL-C-26074)
- MIL-DTL-32119
- DEF STAN 03-5
Zinc Plating
Zinc plating is the process of electrodepositing Zinc onto Mild Steel or Iron parts. The main benefits of Zinc Plating are that it offers excellent corrosion resistance as it is a sacrificial coating in that the zinc coating slowly corrodes over time protecting the steel/iron part underneath.
Clear zinc plating or iridescent passivate film available.
Specifications
- ASTM B633
- AMS 03-20 (DEF STAN 03-20)
- BS EN ISO 19598
Zinc Nickel Plating
Zinc-Nickel electroplating is a coating that is used in the protection of steel, cast iron, malleable iron, copper, and brass.
Zinc-Nickel is recognized as an environmentally safe alternative to cadmium electroplating. In specific applications, Zinc-Nickel demonstrates equivalent, or better, corrosion properties when compared to cadmium.
Zinc-Nickel is normally applied for corrosion protection purposes, and functions as a “sacrificial coating”, corroding before the base material. Zinc-Nickel can also replace cadmium in galvanic interaction applications where the coating is intended to minimize corrosion caused by the interaction of dissimilar metals.
Zinc-Nickel plating is an efficient, economical coating, with minimal environmental impact.
Applications
Zinc-nickel plating is usually applied where specifiers want the highest performance with the lowest deposit thickness. By specifying zinc-nickel, components can resist more than 1000 hours neutral salt spray (ISO 9227 & ASTM B117) with no effect on the dimensional tolerance of threaded components. Components typically plated with zinc-nickel include:
- Automotive
- Electronic
- Aerospace and defence
Clear plating or iridescent passivate film available.
Specifications
- AMS 2417
- BS EN ISO 19598
