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Figuratively, patina can refer to any fading, darkening, or other signs of age, which are felt to be natural or unavoidable (or both). The chemical process by which a patina forms or is deliberately induced is called patination, and a work of art coated by a patina is said to be patinated. Copper weather vane with verdigris patina
The Statue of Liberty, showing advanced patination; verdigris is responsible for the statue's iconic green colour.. Verdigris (/ ˈ v ɜːr d ɪ ɡ r iː (s)/) [1] is a common name for any of a variety of somewhat toxic [2] [3] [4] copper salts of acetic acid, which range in colour from green to a bluish-green depending on their chemical composition.
The copper patinas are very thin: just 0.05080–0.07620 mm (0.002000–0.003000 in) in thickness. Yet, they are highly adherent to the underlying copper metal. The initial and intermediate oxide and sulfide patina films are not particularly corrosion resistant.
Weather. 24/7 Help. For premium support please call: ... Using circular motions, use your sponge to scrub the product into the copper and watch as the patina falls away. Keep at it until the ...
Get the Copper, TIP local weather forecast by the hour and the next 10 days.
Weather. 24/7 Help. For premium support please call: ... Known for its natural, vintage charm and the unique patina it develops over time, copper adds a vibrant, inviting sheen to any space. Hot ...