finishing.com -- The Home Page of the Finishing Industry
A website for Serious Education, promoting Aloha,
& the most FUN smiley you can have in metal finishing

HomeFAQsBooksHelpWantedAdvertiseForum
topic 9273

Bright Nickel


(2001)

At my printed circuit shop we have a Boric Acid Nickel Bath which we use to put a gold finish on certain boards. We use a Cyanide Gold Bath to put the gold finish on over the Nickel. Our problem is that we can never seem to get a 'bright' finish on the Nickel. And without a 'bright' nickel finish it is impossible to obtain a 'bright' gold finish. Both baths are kept to spec as I am the Chemist for the shop. Brightener levels are kept to spec as well.

Any ideas how to obtain a 'bright' finish from the Nickel Bath?

Chris Snead
- NY, New York


(2001)

Assuming the nickel you are using is meant to product a bright nickel deposit, I would be consulting with my supplier of additives as well as running some hull cell panels. Note: some additives are meant to produce a semi-bright deposit.

If the hull cell panel shows a dull or semi-bright deposit or a patchy appearance (semi bright mingle with bright) this is a strong indication that the solution is contaminated and you should look at an activated carbon treatment. There are a host of organic contaminants that can produce dull deposits in a bright nickel and most can be removed with activated carbon.

Most bright nickels use 2 - 3 additives plus an anti-pit. These additives could be out of balance.

If the hull cell panel is bright and the work is dull, you have a problem on your line or with your substrate. You should then concentrate your troubleshooting on the line and or substrate.

Ken Lemke
Ken Lemke
Burlington, Ontario, Canada



This public forum has 60,000 threads. If you have a question in mind which seems off topic to this thread, you might prefer to Search the Site

ADD a Q or A to THIS thread START a NEW THREADView This Week's HOT TOPICS

Disclaimer: It's not possible to diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices


©1995-2017 finishing.com     -    Privacy Policy
How Google uses data when you visit this site.