No registration or passwords; no pop-up ads -- just aloha, fun, & answers.
(as an eBay Partner & Amazon Affiliate earns from qualifying purchases).
Home /
T.O.C.
Fun
FAQs
Good
Books
Ref.
Libr.
Advertise
 
Help
Wanted
Current
Q&A's
Site 🔍
Search
pub  Where the
world gathers for metal finishing
Q&As since 1989



-----

White patina on brass/copper





Q. Dear sirs, Did anybody try to make white patina on brass? I heard there are some advice in books of Ron Young, but, unfortunately, I cannot find these books. Maybe, somebody has some experience in this area --I mean your experience in white patina on brass, not books of Young :-)

Thanks beforehand, Sincerely,

ALEX WOLF
- MOSCOW, RUSSIA
2000


Ed. note: Ron Young's "Contemporary Patination" might not currently be available new, but copies are available used: Contemporary Patination [affil link on Amazon]


Q. AS I UNDERSTOOD, NOBODY IS EXPERIENCED IN WHITE PATINA HERE. MAYBE, ANYBODY MEET YELLOW PATINA ON BRASS/COPPER? SINCERELY, ALEX

ALEXANDER VOLKOV [returning]
- MOSCOW, RUSSIA
2000


A. Alex - In order to apply a white patina to brass, you would have to find a salt of copper that is white. The typical patina is copper carbonate which is a pale greenish salt, and used because it is not too soluble. Copper sulphate, copper chloride, copper nitrate [affil links], are all in the green color family and not what you are looking for. My suggestion therefore, may be to find a paint system to coat the brass and then relieve it if that is your final finish.

ed budman eb sig
Ed Budman [dec]
- Pennsylvania
With deep sadness we advise that our good friend Ed passed away Nov. 24, 2018

2000


A. Hello, I don't know if it is an old subject but about the white patina: difficult to obtain. Forget the bismuth but you can use zinc nitrate around 50 to 100 gram/liter; it is a torch patina. To reinforce the white you can play with a water solution of titanium oxide and alternate the two solutions.
What I have tried also is first layer of brown (ferric nitrate) and titanium oxide with acetate poly vinyl. Not a real patina but the result is sometimes more important.
good luck

Luc Harzé
- Brussels, Belgium
September 25, 2009




(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"