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Shakudō (7223 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


Alnico알루미늄알루미늄 합금알루미늄 청동Aluminium-lithium alloyArsenical bronzeArsenical copperBell metal베릴륨베릴륨구리Billon (alloy)BirmabrightBismanol비스무트황동청동Calamine brassChinese silver크로뮴Chromium hydride코발트Constantan구리Copper hydrideCopper–tungstenCorinthian bronzeCunife백동Cymbal alloysDevarda's alloy두랄루민Dutch metal호박금Florentine bronze갈륨Gilding metal유리GlucydurGuanín (bronze)GunmetalHepatizonHiduminiumHydronalium인듐ItalmaMagnalium마그네슘ManganinMegalliumMelchior (alloy)머큐리MolybdochalkosMuntz metal니크롬니켈양은노르딕 골드OrmoluPhosphor bronzePinchbeck (alloy)플라스틱Plexiglas플루토늄칼륨로듐Rose's metal사마륨스칸듐나트륨Speculum metal스테인리스강강철StelliteStructural steel주석 (원소)타이타늄Tombac우라늄Vitallium우드 합금Y alloy아연지르코늄TumbagaAlGaGalfenolGalinstanColored goldRhoditeCrown goldElinvarField's metalFernicoFerroalloy페로세륨FerrochromeFerromanganeseFerromolybdenumFerrosiliconFerrotitaniumFerrouraniumInvar주철Iron–hydrogen alloy선철Kanthal (alloy)KovarStaballoyBulat steelCrucible steel41xx steel다마스쿠스 강MangalloyHigh-speed steelMushet steelMaraging steelHigh-strength low-alloy steelReynolds 531Electrical steelSpring steelAL-6XNCelestriumAlloy 20Marine grade stainlessMartensitic stainless steelSanicro 28Surgical stainless steelZeron 100Silver steelTool steelWeathering steelWootz steel땜납TerneType metalElektron (alloy)아말감Magnox (alloy)AlumelBrightrayChromelHaynes InternationalInconelMonelNicrosilNisilNickel titaniumMu-metal퍼멀로이SupermalloyNickel hydridePlutonium–gallium alloy나크Mischmetal리튬Terfenol-DPseudo palladiumScandium hydrideSamarium–cobalt magnetArgentium sterling silverBritannia silverDoré bullionGoloidPlatinum sterlingShibuichi스털링 실버Tibetan silverTitanium Beta CTitanium alloyTitanium hydrideGum metalTitanium goldTitanium nitride배빗메탈Britannia metal퓨터Queen's metalWhite metalUranium hydrideZamakZirconium hydride수소헬륨붕소질소산소플루오린메테인Mezzanine원자

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