NIPHOS® Nickel-Phosphorus Electrolyte

NIPHOS® Nickel-Phosphorus Electrolyte

Electrolytic process for the deposition of Nickel-phosphorus

With NIPHOS® nickel-phosphorus alloy layers in barrel-, rack- and reel-to-reel lines can be plated electrolytically. The electrolytes are free from halides and contain, besides nickel, no other heavy metals such as lead or cadmium.

It is possible to work with soluble anodes (nickel), insoluble anodes (platinum-plated titanium or MMO) or a combination of both. The lifetime is almost unlimited and corresponds to the one of bright nickel electrolytes. Nickel-phosphorus layers are amorphous, diamagnetic, abrasion and corrosion resistant. The layers are applied as intermediate layers (prior to e.g. tin, chromium or gold) or as final layer.

Electrolyte characteristics

Electrolyte type

Acidic

Metal content

80 (60 - 90) g/l Ni 25 (22 - 28) g/l P

pH value

2.6 (2.5 - 2.7)

Operating temperature

60 (55 - 75) °C

Current density range: Rack operation

4 (3 - 5) A/dm²

Current density range: Barrel operation

1.5 (1 - 2) A/dm²

Plating speed: Rack operation at 4 A/dm²

0.4 μm/min

Plating speed: Barrel operation at 1,5 A/dm²

0.15 μm/min

Coating characteristics

Coating

Nickel-phoshporus

Alloy composition

87 - 89 wt.% Ni 11 - 13 wt.% P

Colour of deposit

Steel-grey

Brightness

Bright

Hardness

550 - 600 HV

Density of the coating

Appr. 7.8 g/cm³

Advantages

  • Electrolytic deposition of nickel-phosphorus alloy layers
  • Simple electrolyte maintenance at temperatures of 60°C
  • Long lifetime of the electrolyte
  • Does not contain halides, ammonia or heavy metals such as lead or cadmium
  • For rack-, barrel- or reel-to-reel operation
  • High hardness (up to 1,200 HV after heat treatment)
  • Very good abrasion resistance
  • Corrosion resistant
  • Suitable as final or intermediate layer

Applications

  • Replacement of electroless nickel
  • Alternative or addition to technical chromium-plating
  • Weldable and bondable surface finish
  • Decorative, stainless steel coloured surface finish
  • Diamagnetic coating of RF connectors
  • Intermediate layer prior to gold-plating of connectors
  • Electroforming, e.g. of matrices

Downloads

  • Produktblatt-niphos-nip-en-screen-20190502.pdf
    Download

Your contact person

Markus Legeler

Manager Sales International
T: +49 7171 607 204
F: +49 7171 607 316
Email

Find a representative in your region

×

      Umicore uses certain monitoring and tracking technologies such as cookies. These technologies are used in order to maintain, provide and improve our services on an ongoing basis, and in order to provide our web visitors with a better experience.

      By clicking on the "Accept all" button you agree to the use of these cookies while using the website. For further information regarding how we use cookies and other tracking technologies, please see section 10 of our website privacy notice

          Necessary cookies are essential and help you navigate our website. This helps to support security and basic functionality and are necessary for the proper operation of our website, so if you block these cookies we cannot guarantee your use or the security during your visit.

          Cookies that help us to understand the behaviour of users of our website. This allows us to continuously improve our website to provide the best information in support of our project aims. These cookies also help us understand the effectiveness of our website. For instance these cookies tell us which pages visitors go to most often and if they get error messages from web pages.

          Cookies that deliver content to you based on your interests, which are assumed from your browsing history. Most Targeting Cookies track users via their IP address and, thus, may collect some Personal Data. Personal Data collected by Targeting Cookies may be shared with third parties, such as advertisers.