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  2. Bronze disease - Wikipedia

    en.wikipedia.org/wiki/Bronze_disease

    Bronze disease is an irreversible and nearly inexorable corrosion process that occurs when chlorides come into contact with bronze or other copper-bearing alloys. [1] It can occur as both a dark green coating, or as a much lighter whitish fuzzy or furry green coating. [1]

  3. Conservation and restoration of outdoor bronze objects

    en.wikipedia.org/wiki/Conservation_and...

    Protective elements for bronze fountains are particularly important, since water is one of the leading causes for alterations or corrosion in a bronze. [2] Bronze sculptures incorporated in fountains will need more layers of wax, because the spray of water will cause deterioration of the wax at a faster pace than would normally happen.

  4. Conservation and restoration of copper-based objects

    en.wikipedia.org/wiki/Conservation_and...

    The prevention and removal of surface dirt and corrosion products are the primary concerns of conservator-restorers when dealing with copper or copper-alloy objects. Perseus with the Head of Medusa , bronze, by Benvenuto Cellini, in the Loggia dei Lanzi gallery on the edge of the Piazza della Signoria in Florence; picture taken after the statue ...

  5. You Can Use Vinegar and Baking Soda To Remove Rust - AOL

    www.aol.com/lifestyle/vinegar-baking-soda-remove...

    You can remove rust corrosion from metal objects without damaging the surface. This expert-recommended DIY method calls for vinegar, salt, and baking soda.

  6. Verdigris - Wikipedia

    en.wikipedia.org/wiki/Verdigris

    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.

  7. Conservation and restoration of shipwreck artifacts - Wikipedia

    en.wikipedia.org/wiki/Conservation_and...

    Copper, brass and bronze can develop a shiny pitted surface and can become covered with a layer of concretion as well as green or black corrosion. Ferrous metals such as cast and wrought iron and steel usually corrode to form thick concretions that can entirely cover the metal object. [9]

  8. Chemical coloring of metals - Wikipedia

    en.wikipedia.org/wiki/Chemical_coloring_of_metals

    Brown or black can be used as a base color for copper patina. If the amount of chlorides decreases the color will be more bluish-green, if carbonate decreases, more yellow-green. [27] Black for copper. Solution of sodium polysulfide 2.5%, items must be submerged in the solution after color developing, wash, dry and wax or varnish colored object ...

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