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Electroless Nickel
is a process of plating nickel by means of a
chemical reduction rather than the use of
external electrical DC current. This means
that any active surface that comes into
contact with the solution will be coated.
The process is “autocatalytic” and will
continue to plate over itself after the
substrate is covered allowing for high
plating thicknesses. The lack of current
density issues means that electroless
deposits are very uniform regardless of
complex part geometries.
The nickel deposit can contain various
degrees of phosphorous or boron depending on
the chemistry used which allows for unique
properties and a variety of applications.
Its excellent corrosion/wear protection,
hardness, electrical, and magnetic
properties allow this type of plating to be
frequently used in the electronics,
aerospace, marine and automotive industries.
Electroless nickel deposits have a hardness
range from 450-700 Knoop. This can be
increased with heat treating to 500-980
Knoop. Electroless nickel is more costly
than electroplated nickel and is not always
a substitute.
KPW offers:
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Mid-Phos:
High Phos:
Nickel Boron: |
5% - 9% Phosphorous
10.5% - 12% Phosphorous
co-deposit of Boron |
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The Benefits of
Electroless
Nickel Include:
·
Uniform Deposits
·
Hardness
·
Great
Abrasion/Wear
Resistance
·
Less Porous
·
Corrosion and
Chemical
Resistance
·
Lubricity
·
Solderability
·
Magnetic
Properties (High
Phos. is
non-magnetic)
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· MIL-C-26074
· AMS
2404
· AMS
2405
· AMS
2433
· ASTM
B733
· AMS-C-
26074
· Custom
Specifications
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