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Shakudō (7199 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


AlnicoGlinStopy aluminiumBrązalAluminium-lithium alloyArsenical bronzeArsenical copperBell metalBeryl (pierwiastek)Brązy#Brąz berylowyBilon (stop)BirmabrightBismanolBizmutMosiądzBrązyCalamine brassChinese silverChromChromium hydrideKobaltKonstantanMiedźCopper hydrideCopper–tungstenBrąz korynckiCuniferMiedzionikielCymbal alloysStop DevardyDuraluminiumDutch metalElektrumFlorentine bronzeGalGilding metalSzkłoGlucydurZłotoGuanín (bronze)SpiżHepatizonHiduminiumHydronaliumIndŻelazoItalmaOłówMagnalMagnezManganinMegalliumMelchior (stop metali)MercuryMolybdochalkosMuntz metalChromonikielinaNikielNowe srebroNordic goldOrmoluFosfobrązPinchbeck (alloy)Tworzywa sztucznePlexiglasPluton (pierwiastek)PotasRod (pierwiastek)Stop RosegoSamarSkandSrebroSódSpeculum metalStal nierdzewnaStalStellitStal konstrukcyjnaCynaTytan (pierwiastek)TombakUran (pierwiastek)VitalliumStop WoodaY alloyCynkCyrkon (pierwiastek)TumbagaAlGaGalfenolGalinstanNiebieskie złotoRhoditeCrown goldElinwarField's metalFernicoŻelazostopyKamień do zapalniczkiFerrochromeFerromanganeseFerromolybdenumŻelazokrzemFerrotitaniumFerrouraniumInwarŻeliwoIron–hydrogen alloySurówka hutniczaKantalKovarStaballoyBułat (stal)Crucible steel41xx steelStal damasceńskaStal HadfieldaStal szybkotnącaMushet steelStal maragingStal konstrukcyjna niskostopowaReynolds 531Blacha elektrotechnicznaStal sprężynowaAL-6XNCelestriumAlloy 20Marine grade stainlessMartensitic stainless steelSanicro 28Stal chirurgicznaZeron 100Silver steelStal narzędziowaStal o podwyższonej odporności na warunki atmosferyczneWootz steelLut (technologia)TerneStop drukarskiElektron (stop magnezu)AmalgamatMagnoxAlumelBrightrayChromelHaynes InternationalInconelMonelNicrosilNisilNitinolMumetalPermalojSupermalojNickel hydridePlutonium–gallium alloySodium-potassium alloyMiszmetalLitTerfenol-DPseudo palladiumScandium hydrideSamarium–cobalt magnetArgentium sterling silverBritannia silverDoré bullionGoloidPlatinum sterlingShibuichiSterling silverTibetan silverTitanium Beta CTitanium alloyTitanium hydrideGum metalTitanium goldTitanium nitrideBabbit (stop)Britannia (stop)PewterQueen's metalWhite metalWodorek uranuZnalZirconium hydrideWodórHel (pierwiastek)BorAzotTlenFluorMetanMezzanino (architektura)Atom

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