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





"In chamber top coat"



-----

2002

At present we base coat outside the Vacuum chamber, vacuum metallise with Al in the chamber and top coat outside the chamber. What is the best system to do all 3 in the chamber? If this is not generally done, what is the best way to at least top coat in the chamber after the metallising?

Jag Kaurah
- Dandenong, Vic, Australia



2002

The polymer coatings you are depositing on the base and top are not generally deposited in vacuum, so, without knowing more about your application, I would say no, you can't put the same base and top coats on within the aluminum deposition chamber. It might be possible to replace all three with a suitable PVD coating, such as chromium nitride, which would be done entirely within the vacuum chamber. It really depends on the performance you need. Chromium nitride, for instance, will give you a good appearance and very high wear and scratch resistance, but it is not a "fill" coating, that is, the coating surface finish is the nearly the same as the substrate, so you may not get the sheen that you want.

jim treglio portrait
Jim Treglio - scwineryreview.com
PVD Consultant & Wine Lover - San Diego,
California



none
finishing.com is made possible by ...
this text gets replaced with bannerText
spacer gets replaced with bannerImages



(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    -    ©1995-2023 finishing.com, Pine Beach, New Jersey, USA