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Alkaline zinc/nickel over electroless
I need to zinc/nickel plate Al. I do not currently have a process for this, but my shop does have the process for EN plating Al. I will follow the advise of Mr. Budman's comments in letter 5465 and apply alkaline zinc/nickel over EN.
y question is: Can I go right from EN plate to rinse to zinc/nickel; or do I need an activation step in between?
ps, my electroless is HP.Mary Cera
- OKC, Oklahoma
An activation step should not be required as long as the nickel surface does not passivate. Once the nickel has passivated, a suitable activation, such as a strike will be necessary to promote adhesion.
Best of Luck,Ira Donovan, M.S.F.
Kansas City, Missouri