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Shakudō (7211 views - Material Database)

Shakudō (赤銅) is a billon of gold and copper (typically 4–10% gold, 96–90% copper) which can be treated to form an indigo/black patina resembling lacquer. Unpatinated shakudō visually resembles bronze; the dark color is induced by applying and heating rokushō, a special patination formula. Shakudō was historically used in Japan to construct or decorate katana fittings such as tsuba, menuki, and kozuka; as well as other small ornaments. When it was introduced to the West in the mid-19th century, it was thought to be previously unknown outside Asia, but recent studies have suggested close similarities to certain decorative alloys used in ancient Egypt, Greece, and Rome. Modern jewelry artisans have revived the use of shakudō as a striking design element, especially for the technique of mokume-gane. Due to the expensive gold content, shakudō is normally limited to accents or small items such as tsuba. Larger objects (such as vases) described as shakudō may be mislabeled, especially if the glossy blue-black color is not evident. Unpatinated or repolished shakudō will not spontaneously patinate in air. Shakudō is sometimes inaccurately used as a general term for damascened decorative metal inlays of Japanese origin. These were widely known in the West as Amita damascene, from the name of a 20th-century manufacturer of such items for export. Amita damascene included shakudo, shibuichi, gold, silver, and bronze for inlays.
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Shakudō

Shakudō

Shakudō (赤銅) is a billon of gold and copper (typically 4–10% gold, 96–90% copper) which can be treated to form an indigo/black patina resembling lacquer. Unpatinated shakudō visually resembles bronze; the dark color is induced by applying and heating rokushō, a special patination formula.

Shakudō was historically used in Japan to construct or decorate katana fittings such as tsuba, menuki, and kozuka; as well as other small ornaments. When it was introduced to the West in the mid-19th century, it was thought to be previously unknown outside Asia, but recent studies have suggested close similarities to certain decorative alloys used in ancient Egypt, Greece, and Rome.[1] Modern jewelry artisans have revived the use of shakudō as a striking design element, especially for the technique of mokume-gane.

Due to the expensive gold content, shakudō is normally limited to accents or small items such as tsuba. Larger objects (such as vases) described as shakudō may be mislabeled, especially if the glossy blue-black color is not evident. Unpatinated or repolished shakudō will not spontaneously patinate in air.

Shakudō is sometimes inaccurately used as a general term for damascened decorative metal inlays of Japanese origin. These were widely known in the West as Amita damascene, from the name of a 20th-century manufacturer of such items for export. Amita damascene included shakudo, shibuichi, gold, silver, and bronze for inlays.

See also


鋁鎳鈷合金鋁合金Aluminium bronzeAluminium-lithium alloyArsenical bronzeArsenical copperBell metalBeryllium copperBillon (alloy)BirmabrightBismanol黃銅青铜Calamine brassChinese silverChromium hydride康銅氢化亚铜Copper–tungstenCorinthian bronzeCunife白铜Cymbal alloysDevarda's alloy杜拉鋁Dutch metal琥珀金Florentine bronzeGilding metal玻璃GlucydurGuanín (bronze)GunmetalHepatizonHiduminiumHydronaliumItalma镁铝合金ManganinMegalliumMelchior (alloy)MercuryMolybdochalkosMuntz metalNichromeNickel silver北歐金OrmoluPhosphor bronzePinchbeck (alloy)塑料PlexiglasRose's metalSpeculum metal不鏽鋼Stellite钢结构Tombac維塔立合金伍德合金Y alloyTumbagaAlGaGalfenolGalinstan白金 (合金)銠金礦Crown goldElinvarField's metalFernicoFerroalloyFerroceriumFerrochromeFerromanganeseFerromolybdenumFerrosiliconFerrotitaniumFerrouranium不變鋼铸铁Iron–hydrogen alloy生鐵Kanthal (alloy)KovarStaballoyBulat steelCrucible steel41xx steel大馬士革鋼Mangalloy高速鋼Mushet steel马氏体时效钢High-strength low-alloy steelReynolds 531电工钢Spring steelAL-6XNCelestriumAlloy 20Marine grade stainless马氏体不锈钢Sanicro 28Surgical stainless steelZeron 100Silver steelTool steel耐候钢烏茲鋼銲料TerneType metalElektron (alloy)汞齊Magnox (alloy)AlumelBrightrayChromelHaynes International英高鎳合金MonelNicrosilNisilNickel titaniumΜ合金透磁合金超導磁率合金Nickel hydridePlutonium–gallium alloy钠钾合金MischmetalTerfenol-DPseudo palladiumScandium hydride釤鈷磁鐵Argentium sterling silverBritannia silverDoré bullionGoloidPlatinum sterlingShibuichiSterling silverTibetan silverTi Beta-C.Titanium alloy氢化钛Gum metalTitanium gold氮化钛巴氏合金Britannia metalPewterQueen's metalWhite metal氢化铀ZamakZirconium hydride甲烷Mezzanine原子

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