Electroless Nickel

NBB Electroless Nickel – this process is bright and robust despite being free of lead
and cadmium. It is a mid-phos process in the range of 6 to 8.
KTY Electroless Nickel – from the research labs of Uyemura-Japan, this process is the
world’s first “heavy metal –free” EN. Lead, cadmium and other heavy metals
traditionally used for adding brightness and stability have been eliminated. Uyemura
offers innovative solutions of Electroless Nickel P-B, Ni-P-Co for Wear Resistance.
Electroless Nickel Process for Aluminum

The ANP Electroless Nickel process substantially improves plating onto aluminum.
Plating electroless nickel on aluminum has been problematic and costly due to short
bath life. A normal EN bath can plate steel for six to eight MTOs (36 – 48 g/l nickel
plated). Plating into aluminum reduces that bath life by about 50%. The typical failure
is poor adhesion of the nickel to the aluminum, resulting in blisters or nickel peel when
the aluminum is bent.
Technology developed to address this problem of short bath life used an alkaline nickel
strike after zincating and prior to the regular plating bath. Drawbacks to that approach
include extra tanks, process steps, and control over an additional plating bath. Failures
have also been seen with nickel-to-nickel bonding.
A further application-specific problem is that strike baths always deposit magnetic
nickel, thereby limiting their use to applications where magnetism is not a factor.
Uyemura’s electroless nickel for aluminum provides excellent adhesion through at least
six MTOs. It does not employ a strike and adds no additional steps compared to normal
aluminum preparation double zincating.
This important development uses Uyemura’s lead and cadmium-free electroless nickel
in concert with proprietary cleaning, etching and zincating technologies.
ANP1012 electroless nickel plates nickel phosphorus alloys in the range of 10-12
weight percent phosphorus. It's ideal for applications requiring:

  • A high degree of corrosion resistance
  • A non-magnetic nickel finish
  • Excellent wear resistance and a low contact friction finish

ANP1012 has excellent capacity to plate aluminum alloys with good adhesion using
conventional zincate pretreatment practice.

ANP and ANP1012 electroless nickel processes are RoHS compatible. They were
developed by the Uyemura Tech Center, Southington, CT.
Tech-Knowledge provides full coverage and technical support for Uyemura materials in
Israel.

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