TIMEPIECE, ORNAMENT OR JEWEL MADE OF GOLD

To provide a timepiece, ornament or jewel made of an 18-carat yellow gold alloy offering improved resistance to discoloration and tarnishing.SOLUTION: The invention relates to a timepiece, ornament or jewel made of a zinc-free, germanium-free, nickel-free, cobalt-free, indium-free gold alloy, the al...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ALBAN DUBACH, GAETAN VILLARD, KISSLING GREGORY, VINCENT DENIS, STEPHANE LAUPER
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ALLOYS BRACELETS CHEMISTRY COINS FERROUS OR NON-FERROUS ALLOYS HABERDASHERY HOROLOGY HUMAN NECESSITIES JEWELLERY MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL MECHANICALLY-DRIVEN CLOCKS OR WATCHES METALLURGY OTHER PERSONAL ADORNMENTS PHYSICS TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	To provide a timepiece, ornament or jewel made of an 18-carat yellow gold alloy offering improved resistance to discoloration and tarnishing.SOLUTION: The invention relates to a timepiece, ornament or jewel made of a zinc-free, germanium-free, nickel-free, cobalt-free, indium-free gold alloy, the alloy containing, in weight percent, 75-77.5% of gold, 0.5-3% of palladium, 10-18% of silver and 5-13% of copper, where the respective percentages of all the alloying elements add up to 100%.SELECTED DRAWING: Figure 1 【課題】退色と光沢減退に対する耐性が改善された１８カラットのイエローゴールド合金で作られた計時器、装飾品又は宝石品を提供する。【解決手段】本発明は、亜鉛を含有せずゲルマニウムを含有せずニッケルを含有せずコバルトを含有せずインジウムを含有しない金合金で作られた計時器、装飾品又は宝石品に関する。前記合金は、重量％で、金を７５〜７７．５％、パラジウムを０．５〜３％、銀を１０〜１８％、銅を５〜１３％、含有し、すべての前記合金形成元素の各百分率の合計は１００％となる。【選択図】図１