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 3036

Palladium chloride as a pre-cursor for silver deposition


(1999)

Could anybody assist me with information regarding successive process steps of stannous chloride then palladium chloride as a pre-cursor to silver deposition on non-conductive substrates?

David Bamber
UK


(1999)

This can probably be done, but it is an unusual mixing of technologies. There are three different wet processing technologies that are commonly used to metallize non-conductors.

1). Applying a two-part silver reduction system. In this approach, a soluble silver salt and a reducing agent are simultaneously sprayed onto the substrate to deposit metallic silver. This is done as the first step in making stampers for vinyl records.

2). Applying a colloidal suspension of conductive granules, which can be graphite, copper, or silver. This is more or less painting the part with a conductive silver paint, and is often used to metallize flowers, leaves, and things like that.

3). The palladium chloride / stannous chloride system which is used to precede electroless copper or electroless nickel deposition on plastics, for use on such things as automotive brightwork.

I suppose it is possible to follow routine #3 with electroless copper, followed by electrolytic copper, and then electrolytic silver. However, this is done (to my knowledge) exclusively with proprietary sequences. You might want to talk to Enthone/OMI, Atotech, Shipley, or MacDermid.

I think you would also find the book "Standards and Guidelines for Electroplated Plastics" to be a big help.

Ted Mooney, finishing.com Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey



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.