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i think they're pretty interchangeable, but if you want to be nitpicky:
verdigris is the green coating that accumulates on copper and brass metals.
patina is the green coating that collects on bronze metal. (although patina is used much more broadly than that as well)
taken from definitions below (mac dictionary widget):
verdigris |ˈvərdəˌgrēs; -ˌgris; -ˌgrē|
noun
a bright bluish-green encrustation or patina formed on copper or brass by atmospheric oxidation, consisting of basic copper carbonate.
ORIGIN Middle English : from Old French verte-gres, earlier vert de Grece 'green of Greece.'
patina |pəˈtēnə|
noun
a green or brown film on the surface of bronze or similar metals, produced by oxidation over a long period.
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Which metal have a green patina?
Verdigris
What is the process for achieving a verdigris patina on copper?
To achieve a verdigris patina on copper, the metal is exposed to elements like moisture, oxygen, and acidic substances over time. This natural process causes the copper to develop a greenish-blue patina on its surface.
What techniques can be used to achieve a verdigris patina on metal surfaces?
To achieve a verdigris patina on metal surfaces, techniques such as applying a mixture of vinegar and salt, using a solution of ammonia and salt, or using a commercial patina solution can be used. These techniques involve creating a chemical reaction on the metal surface to produce the greenish-blue verdigris color.
What is the process for achieving a verdigris copper patina on metal surfaces?
To achieve a verdigris copper patina on metal surfaces, the process involves exposing the metal to a combination of moisture, oxygen, and acidic substances over time. This causes the metal to oxidize and develop a greenish-blue patina. The patina can also be accelerated by applying a solution of vinegar, salt, and ammonia to the metal surface.
How can I achieve a verdigris effect on copper?
To achieve a verdigris effect on copper, you can expose the copper to a combination of vinegar, salt, and ammonia fumes. This will create a greenish-blue patina on the surface of the copper, giving it the desired verdigris appearance.
What is causing the copper in your attic to turn green?
If your attic doesn't have any leaks, then the patina (green color) is most likely formed by the reaction between the copper and carbon dioxide in the air, forming copper carbonate. This patina, called verdigris, protects the copper underneath from corrosion.
What color does copper turn when it oxidizes?
Copper typically turns green when it oxidizes, forming a patina known as verdigris. This greenish layer is created as a result of the chemical reaction between copper and moisture in the air.
Word for copper rust?
Copper rust is commonly referred to as patina, which is a greenish-blue or greenish-brown film that forms on the surface of copper and other metals when exposed to air over time.
What is the name of the color when copper turns green?
The color that copper turns when it oxidizes is called verdigris. It is a greenish-blue patina that forms on the surface of copper over time due to exposure to air and moisture.
What is the color green called that is aged copper?
The color green that aged copper turns into is called patina. It is a natural blue-green tarnish that forms on the surface of copper when exposed to air and moisture over time.
Will acetone remove verdigris?
Acetone will not remove verdigris.
How do you accelerate verdigris patina on copper?
To accelerate the formation of verdigris patina on copper, you can create a solution of vinegar and salt. You can also use a mixture of hydrogen peroxide and salt to speed up the process. Simply apply these solutions to the copper surface and allow them to sit for some time, periodically checking the progress until you achieve the desired patina.
