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  2. Patina - Wikipedia

    en.wikipedia.org/wiki/Patina

    Patina (/ p ə ˈ t iː n ə / pə-TEE-nə or / ˈ p æ t ɪ n ə / PAT-ih-nə) is a thin layer that variously forms on the surface of copper, brass, bronze, and similar metals and metal alloys (tarnish produced by oxidation or other chemical processes), or certain stones [1] and wooden furniture (sheen produced by age, wear, and polishing), or ...

  3. Chemical coloring of metals - Wikipedia

    en.wikipedia.org/wiki/Chemical_coloring_of_metals

    Chemical coloring of metals is the process of changing the color of metal surfaces with different chemical solutions. The chemical coloring of metals can be split into three types: electroplating – coating the metal surface with another metal using electrolysis. patination – chemically reacting the metal surface to form a colored oxide or ...

  4. Bronzing - Wikipedia

    en.wikipedia.org/wiki/Bronzing

    Bronzing is a process by which a bronze-like surface is applied to other materials (metallic or non-metallic). Some bronzing processes are merely simulated finishes ( patinas ) applied to existing metal surfaces, or coatings of powdered metal that give the appearance of a solid metal surface.

  5. Hepatizon - Wikipedia

    en.wikipedia.org/wiki/Hepatizon

    Hepatizon (Greek etymology: ἧπαρ, English translation: "liver"), also known as black Corinthian bronze, was a highly valuable metal alloy in classical antiquity.It is thought to be an alloy of copper with the addition of a small proportion of gold and silver (perhaps as little as 8% of each), mixed and treated to produce a material with a dark purplish patina, similar to the colour of liver.

  6. Corinthian bronze - Wikipedia

    en.wikipedia.org/wiki/Corinthian_bronze

    Corinth's location on a map of modern Greece. Corinthian bronze, also named Corinthian brass, aes Corinthiacum, or Grilver was a metal alloy in classical antiquity.It is thought to be an alloy of copper with gold or silver (or both), although it has also been contended that it was simply a very high grade of bronze, or a kind of bronze that was manufactured in Corinth. [1]

  7. Bronze - Wikipedia

    en.wikipedia.org/wiki/Bronze

    Bronze is an alloy consisting primarily of copper, commonly with about 12–12.5% tin and often with the addition of other metals (including aluminium, manganese, nickel, or zinc) and sometimes non-metals (such as phosphorus) or metalloids (such as arsenic or silicon).

  8. Irogane - Wikipedia

    en.wikipedia.org/wiki/Irogane

    Irogane (色金 "coloured metals") [1] [2] [3] is the term for a set of Japanese metals – forms of copper (with natural impurities), and copper alloys – treated in niiro patination processes, [4] [5] traditionally used in sword-making, catches for sliding doors, and luxury highlights on larger objects, and in modern times, in jewellery.

  9. Polishing (metalworking) - Wikipedia

    en.wikipedia.org/wiki/Polishing_(metalworking)

    The removal of oxidization (tarnish) from metal objects is accomplished using a metal polish or tarnish remover; this is also called polishing. To prevent further unwanted oxidization, polished metal surfaces may be coated with wax, oil, or lacquer. This is of particular concern for copper alloy products such as brass and bronze. [2]

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