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Top 3 Benefits of High Phosphorus Electroless Nickel

The phosphorus content in an electroless nickel coating is a key component in the determination of the properties of that coating. There are varying levels of phosphorus content, and each provides unique properties. High phosphorus electroless nickel typically contains a phosphorus content of between 10-12%, making it ideal for applications where a uniform, hard and highly corrosion resistant coating is required. Here are the top 3 benefits of a high phosphorus electroless nickel coating.

Hardness

Electroless nickel coatings with a high phosphorus content offers high levels of hardness and a lack of porosity, which makes it an ideal barrier coating for components, especially those that are used in hostile environments or are subject to aggressive use. The as-plated hardness of electroless nickel is approximately 48-52 Rc, but it can be heat treated to 68-70 Rc for a more wear resistant finish.

Corrosion Resistance

High phosphorus electroless nickel coatings are recommended where the maximum level of corrosion protection is needed. This makes it ideal for industry standards requiring protection from highly corrosive acidic environments such as oil drilling and coal mining.

Uniformity

nickel plating technical figureThe process of high phosphorus electroless nickel plating involves a chemical reaction, rather than electricity which is used in electroplating. Electroplating often produces a number of unwanted effects such as edge build up, uneven thickness, no plating in corners and recesses etc.

But electroless nickel plating, on the other hand, guarantees full coverage that is so uniform that the surface finish is normally duplicated. This also eliminates the need for post plate grinding or polishing. Even complex shapes such as threads keep their original geometry after plating.

Other advantages of high phosphorus electroless nickel are as follows:

  • Low porosity
  • Non-magnetic
  • Less prone to staining
  • Pit-free deposits
  • Fast deposition rate throughout life
  • Consistent deposition rate throughout life
  • Very stable and robust

Corrosion Resistant Metal Coating

If you are looking for a highly effective corrosion resistant metal coating, high phosphorus electroless nickel is a great solution. Call the NiTEC team on 0845 224 3571, email info@nitec-enp.co.uk or get in touch via our contact page.

High Phosphorus Electroless Nickel Coatings

High phosphorus electroless nickel provides the highest levels of corrosion resistance. It is often used in industries that require high levels of resistance to strongly acidic corrosive environments, for example, coal mining and oil drilling.

Component plated with high phosphorus electroless nickelElectroless nickel containing high levels of phosphorus has a low degree of solderability, and will only be solderable for a limited time after plating. This makes it perfect for electronic parts such as connector housings and semiconductor packaging.

The microhardness levels of high phosphorus electroless nickel coatings range up about 600 VPN. This type of nickel coating makes for low levels of surface porosity, and is not prone to staining.

Also, when the phosphorus content is greater than 11.2%, deposits are non-magnetic.

Features of high phosphorus electroless nickel:

  • Corrosion resistant
  • Fast deposition rate throughout life
  • Consistent deposition rate throughout life
  • Very stable and robust

If you are looking for a metal coating that provides high levels of corrosion resistance, high phosphorus electroless nickel is a great solution. Call the NiTEC team on 0845 224 3571, email info@nitec-enp.co.uk or get in touch via our contact page.