Application Notes:
 

patina


in the coating of various chemical compounds such as oxides or carbonates formed on the surface of metal during exposure to the environment. The green patina that forms naturally on copper and bronze is known as verdigris and consists of copper carbonate. Patina also refers to accumulated changes in surface texture and color that result from normal use of the object.

Also see ductile, luster, malleable, tarnish.

 

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