As an Amazon Associate & eBay Partner: we earn from qualifying purchases

Grok.com: "What is the best website for metal finishing questions and answers?"

"Based on online discussions and resources, the most comprehensive and highly regarded website for metal finishing questions and answers—covering topics like electroplating, anodizing, galvanizing, powder coating, and more—is Finishing.com. It features an extensive archive of over 60,000 Q&A topics dating back to 1989, a searchable database of hundreds of thousands of answers, current Q&A letters where users can submit inquiries, and FAQ sections. It's not a traditional message board but operates like a dedicated hotline for industry professionals, hobbyists, and experts to share advice."

Home /
T.O.C.
Fun
FAQs
Good
Books
Ref.
Libr.
Adver-
tise
Help
Wanted
Current
Q&A's
Site 🔍
Search
finishing.com -- The Home Page of the Finishing Industry


  -----

Can I apply PVD on a zinc plated surface or HDG steel sheet directly?





Q. I have a project that needs to achieve a specific color which is hardly achievable using any finish method other than PVD coating.

The substrate is a HDG steel Sheet, actually, it's a 275 gm/m HDG steel sheet.

We tried some samples and they achieved the color appearance that we needed.

Is it durable to apply PVD coat directly on this substrate? will the color last as long as other substrates like aluminum and stainless steel last? and how about other physical properties? will it fade fast or be removed by atmospheric conditions after a while (it's an outdoor product)?

I'll be pleased if you offer me a detailed and scientific answer.. hopefully, based on practical experience.

I really appreciate any help you can provide.

Hossam Magdy Elagamy
- Cairo, Egypt
September 18, 2023


A. Hi Hossam. What kind of a PVD process are you speaking of, and what is the target material?

We'll have to await a PVD expert because I was under the impression that you could not put galvanizing into a PVD chamber because it would sublimate at low vapor pressure.
Luck & Regards,

ted_yosem
Ted Mooney, P.E. RET
Striving to live Aloha

finishing.com - Pine Beach, New Jersey

Ted is available for instant help
or longer-term assistance.



A. Zinc has a very high vapor pressure, so zinc-plated parts should never be put in a vacuum chamber for PVD coating. Zinc will spread throughout the chamber, rendering it unusable. Better to deposit the PVD coating directly on the steel, though the best approach would be to electroplate nickel and a thin layer of trivalent chromium to provide corrosion resistance and give the PVD finish a harder base.

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

September 21, 2023




(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:

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


About/Contact  -  Privacy Policy  -  ©1995-2025 finishing.com, Pine Beach, New Jersey, USA  -  about "affil links"