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Letter 13007
Cyanide Zincate
Does anyone plate electroless nickel on aluminum that uses a
cyanide zincate? Who? Does cyanide zincate help with adhesion of the
Nickel to the substrate?
Brandon Hellenbrand
- Fairburn, GA, USA
First of two simultaneous responses --
To call it a cyanide zincate is probably a bit of an
overstatement. A zincate or alloy zincate that contains a trace
amount of cyanide would be a much fairer answer. When I was actively
in plating, I never came across a plater that did not say that it had
better adhesion. Harder to control and it does require special haz
waste procedures for that tank and rinses. Not all that difficult.
Very few platers use it because a normal double zincate will suffice
for nearly all work.
James Watts
- FL
Second of two simultaneous responses --
Yes cyanide zincate is used. I think there are non-cyanide
zincates that have been developed. I don't know what process you use
other than zincate and nitric acid to strip before copper
strike/electroless nickel strike.
Bill Hemp
tech svc. w/ chemical supplier -
Grand Rapids, Michigan
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