No registration, no passwords; no pop-up ads -- just aloha, fun, & authoritative answers.
As an eBay Partner & Amazon Affiliate we receive compensation for qualifying purchases.
Home /
T.O.C.
FAQs
 
Good
Books
Ref.
Libr.
Advertise
Here
Help
Wanted
Current
Q&A's
Search 🔍
the Site
pub  Where the world gathers for
plating, anodizing, & finishing Q&As since 1989





-----

Thin films of gold or silver on fused silica




To the members, I have a pressing requirement to deposit very thin gold or silver films onto fused silica surfaces. Are there any techniques you can use to do this. In particular I need to deposit gold or silver (50-60 microns thick) without using a thick adhesion layer. If any of your companies are interested in fabricating this coating I would be delighted to hear from you.

Dr John Quinn
Dublin City University - Dublin
1999



We have different concepts of 'very thin', Dr. Quinn. 50-60 microns is exceptionally thick for gold plating, and I think it's been years since a jewelry plater or electronics supplier applied gold that heavy. Is there a typo in your inquiry?

Ted Mooney, finishing.com
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
1999



The inquiry I mailed did possess a typo and should have read as follows.

I have a pressing requirement to deposit very thin gold or silver films onto fused silica surfaces (10 mm length of stripped declad optical fibre). Are there any solution phase electroless techniques one can use to do this. In particular I need to deposit gold or silver (40-60 nm thick) without using a thick adhesion layer. If any of your companies are interested in fabricating this coating I would be delighted to hear from you.

Dr John Quinn
- Dublin City University - Dublin
1999



March 1, 2009

Hi, again. PVD processes sound more promising for such a thin film on a non-conductive substrate. Still you should be able to do "two part silvering" (simultaneous spray of silver nitrate and a reducing agent) on a spin table, and gold plate it if you wish. Good luck.

Regards,

Ted Mooney, finishing.com
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey




(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully 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 might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories:

 
Jobshops
Capital
Equipment
Chemicals &
Consumables
Consult'g, Train'g
& Software


About/Contact  -  Privacy Policy  -  ©1995-2024 finishing.com, Pine Beach, New Jersey, USA  -  about "affil links"