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 6137

Nickel oxidation causing adhesion problems?


(2000)

We are having a problem with an immersion gold flash lifting off the surface of our nickel plating during a gold wedge bonding application. An Auger depth profile showed 15-18 atomic % oxygen peak at the interface of the nickel/gold plating. How much oxide can be tolerated without causing an adhesion problem?

Catherine H [last name deleted for privacy by Editor]
- Colorado Springs, Colorado, USA


(2000)

Catherine.

If you have a lots of wetting agent in the nickel solution you get a bad adhesion of the gold deposit. If the nickel is to much passivate you should try to activate in sulfuric acid 10 % for 1-2 minutes and neutralize it potassium solution before gold plating.

Regards

anders sundman
Anders Sundman
3rd Generation in Plating
Consultant - Arvika, Sweden



(2000)

hi

My name's Deniz I'm working in turkey my job electroforming,nickel coating. Sorry I can little English. Your problem's solution: surface coating MgO2 vacuum coating

ok bye

deniz selen
HOLOGRAPHIC MATERIALS - turkey



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.