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
The 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 us team , email or get in touch via our contact page.