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  2. Engraving - Wikipedia

    en.wikipedia.org/wiki/Engraving

    Other terms often used for printed engravings are copper engraving, copper-plate engraving or line engraving. Steel engraving is the same technique, on steel or steel-faced plates, and was mostly used for banknotes, illustrations for books, magazines and reproductive prints, letterheads and similar uses from about 1790 to the early 20th century, when the technique became less popular, except ...

  3. Bluing (steel) - Wikipedia

    en.wikipedia.org/wiki/Bluing_(steel)

    Bluing, sometimes spelled as blueing, is a passivation process in which steel is partially protected against rust using a black oxide coating. It is named after the blue-black appearance of the resulting protective finish. Bluing involves an electrochemical conversion coating resulting from an oxidizing chemical reaction with iron on the ...

  4. Weathering steel - Wikipedia

    en.wikipedia.org/wiki/Weathering_steel

    Weathering steel, often referred to by the genericised trademark COR-TEN steel and sometimes written without the hyphen as corten steel, is a group of steel alloys which were developed to eliminate the need for painting by forming a stable external layer of rust. U.S. Steel (USS) holds the registered trademark on the name COR-TEN. [1]

  5. Oxide jacking - Wikipedia

    en.wikipedia.org/wiki/Oxide_jacking

    Oxide jacking. The expansive force of rusting, which may be called oxide jacking or rust burst, is a phenomenon that can cause damage to structures made of stone, masonry, concrete or ceramics, and reinforced with metal components. A definition is "the displacement of building elements due to the expansion of iron and steel products as the ...

  6. Tilted Arc - Wikipedia

    en.wikipedia.org/wiki/Tilted_Arc

    Tilted Arc was a controversial public art installation by Richard Serra, displayed in Foley Federal Plaza in Manhattan from 1981 to 1989. It consisted of a 120-foot-long (37 m), 12-foot-high (3.7 m) solid, unfinished plate of rust-covered COR-TEN steel. Advocates characterized it as an important work by a well-known artist that transformed the ...

  7. Conservation and restoration of metals - Wikipedia

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

    Derveni krater, bronze, 350 BC, height: 90.5 cm (35 1 ⁄ 2 in.), Inv. B1, Archaeological Museum of Thessaloniki, after cleaning and conservation. Conservation and restoration of metals is the activity devoted to the protection and preservation of historical (religious, artistic, technical and ethnographic) and archaeological objects made partly or entirely of metal.

  8. Mill scale - Wikipedia

    en.wikipedia.org/wiki/Mill_scale

    Mill scale, often shortened to just scale, is the flaky surface of hot rolled steel, consisting of the mixed iron oxides iron (II) oxide (FeO, wüstite), iron (III) oxide (Fe2O3, hematite), and iron (II,III) oxide (Fe3O4, magnetite). Mill scale is formed on the outer surfaces of plates, sheets or profiles when they are produced by passing red ...

  9. Pitting corrosion - Wikipedia

    en.wikipedia.org/wiki/Pitting_corrosion

    Pitting corrosion, or pitting, is a form of extremely localized corrosion that leads to the random creation of small holes in metal. The driving power for pitting corrosion is the depassivation of a small area, which becomes anodic (oxidation reaction) while an unknown but potentially vast area becomes cathodic (reduction reaction), leading to ...