EP2776597A1 - Gold timepiece or jewellery part - Google Patents

Gold timepiece or jewellery part

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Publication number
EP2776597A1
EP2776597A1 EP12784240.9A EP12784240A EP2776597A1 EP 2776597 A1 EP2776597 A1 EP 2776597A1 EP 12784240 A EP12784240 A EP 12784240A EP 2776597 A1 EP2776597 A1 EP 2776597A1
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EP
European Patent Office
Prior art keywords
gold
alloy
jewelery
timepiece
weight
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP12784240.9A
Other languages
German (de)
French (fr)
Other versions
EP2776597B1 (en
Inventor
Stéphane Lauper
Alban Dubach
Denis Vincent
Edwina KLAY
Bruno NEVEU
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Swatch Group Research and Development SA
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Swatch Group Research and Development SA
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Publication date
Application filed by Swatch Group Research and Development SA filed Critical Swatch Group Research and Development SA
Priority to EP12784240.9A priority Critical patent/EP2776597B1/en
Publication of EP2776597A1 publication Critical patent/EP2776597A1/en
Application granted granted Critical
Publication of EP2776597B1 publication Critical patent/EP2776597B1/en
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Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C27/00—Making jewellery or other personal adornments
    • A44C27/001—Materials for manufacturing jewellery
    • A44C27/002—Metallic materials
    • A44C27/003—Metallic alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C5/00—Alloys based on noble metals
    • C22C5/02—Alloys based on gold
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B37/00—Cases
    • G04B37/22—Materials or processes of manufacturing pocket watch or wrist watch cases

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Adornments (AREA)

Abstract

The invention relates to a timepiece or jewellery part manufactured in a nickel-free and cobalt-free gold alloy, the composition of which comprises, by weight, between 75% and 77.5% of gold, between 1.2% and 1.6% of palladium and between 20.1% and 23.8% of copper.

Description

Pièce d ' ho rlogerie ou de bi jouterie en or  Gold hoard or jewelery coin
Domaine de l'invention Field of the invention
L'invention concerne une pièce d'horlogerie ou de bijouterie fabriquée dans un alliage d'or. The invention relates to a timepiece or jewelery made of a gold alloy.
L'invention concerne également un alliage à base d'or, dit or rouge 18 carats et plus particulièrement un tel alliage présentant des caractéristiques de décoloration améliorée. The invention also relates to a gold-based alloy, called 18-carat red gold, and more particularly to such an alloy having improved discoloration characteristics.
L'invention concerne le domaine de la métallurgie des alliages d'or pour l'horlogerie, la bijouterie et la joaillerie. The invention relates to the field of metallurgy of gold alloys for watchmaking, jewelery and jewelery.
Arrière-plan de l'invention L'or rouge 5N standard suivant la norme ISO 8654 (de compositionBACKGROUND OF THE INVENTION Standard 5N red gold according to ISO 8654 (of composition
Au750Cu205Ag45) représente actuellement l'alliage le plus utilisé sur le marché horloger notamment pour la réalisation de pièces d'habillage horloger typiquement des boites de montres, des bracelets etc.. Malheureusement, cet alliage d'or rouge d'aspect esthétique intéressant se décolore au cours du temps et passe lentement de sa couleur rouge initiale à la couleur jaune. Ce phénomène conduit fréquemment à des réclamations de clients insatisfaits de cette transformation. L'origine de cette décoloration est la dissolution sélective du Cu proche de la surface générant une augmentation de la concentration d'Au à la surface jaunissant l'alliage. On connaît déjà du brevet EP 1 512 766 A1 un alliage d'or rouge avec adjonction de platine, qui permet d'augmenter la résistance à la décoloration vis-à-vis des alliages d'or rouge antérieurs. Toutefois cet alliage d'or présente encore, bien que plus lent, un changement de couleur qui peut être amélioré dans certaines conditions au porter tel que lorsqu'il est soumis à une sueur à une pluie acide. De plus, on sait que le platine est un élément avec un point de fusion très élevé (1768°C) nécessitant des préparations de mélanges avec d'autres éléments spécifiques (Au et/ou Cu) afin d'abaisser sa température de fusion ce qui rend la mise en œuvre de l'alliage plus compliquée et plus coûteuse. En effet, sans l'addition de ces éléments d'alliages, le platine ne se dissout pas de manière homogène dans l'or et le rend mécaniquement plus difficile à déformer pour certaines applications horlogères. Au750Cu205Ag45) currently represents the most used alloy on the watch market, particularly for the production of watch-making parts, typically watch cases, bracelets, etc. Unfortunately, this attractive red gold alloy of aesthetic appearance fades over time and slowly changes from its initial red color to the yellow color. This phenomenon frequently leads to complaints from customers dissatisfied with this transformation. The origin of this discoloration is the selective dissolution of the Cu close to the surface, generating an increase in the concentration of Au on the yellowing surface of the alloy. Already known from EP 1 512 766 A1 is a red gold alloy with platinum addition, which increases the resistance to discoloration vis-à-vis the previous red gold alloys. However this gold alloy still has, although slower, a color change that can be improved under certain conditions to wear such as when subjected to sweat to acid rain. In addition, we know that platinum is an element with a very high melting point (1768 ° C) requiring mixtures of preparations with other specific elements (Au and / or Cu) in order to lower its melting temperature which makes the implementation of the more complicated and more expensive alloy. Indeed, without the addition of these alloying elements, the platinum does not dissolve homogeneously in gold and makes it mechanically more difficult to deform for some horological applications.
Aussi, le platine reste un métal très onéreux qui renchérit l'alliage. Also, platinum remains a very expensive metal that increases the alloy.
Résumé de l'invention Summary of the invention
La présente invention a donc pour but de remédier aux inconvénients de l'art antérieur susmentionné en fournissant une pièce d'horlogerie ou de bijouterie fabriquée dans un alliage d'or rouge, 18 carats présentant une résistance à la décoloration améliorée par rapport aux alliages d'or rouge, typiquement d'or 5N de l'art antérieur. The present invention therefore aims to overcome the drawbacks of the aforementioned prior art by providing a timepiece or jewelry made in a red gold alloy, 18 carats having improved fade resistance compared to the alloys of red gold, typically 5N gold of the prior art.
L'invention a également pour but de fournir une pièce d'horlogerie ou de bijouterie fabriquée dans un alliage d'or rouge, 18 carats présentant des préparations d'alliage avec des points de fusion plus bas en vue de faciliter sa mise en œuvre. L'invention a également pour but de fournir une pièce d'horlogerie ou de bijouterie fabriquée dans un alliage d'or rouge, 18 carats présentant des coûts d'alliage plus faible. The invention also aims to provide a timepiece or jewelry made in a red gold alloy, 18 carats alloy preparations with lower melting points to facilitate its implementation. The invention also aims to provide a timepiece or jewelry made of a red gold alloy, 18 carats with lower alloy costs.
A cet effet, l'invention concerne une pièce d'horlogerie ou de bijouterie fabriquée dans un alliage d'or sans nickel et sans cobalt dont la composition comprend en poids entre 75% et 77,5% d'or, entre 1 ,2 et 1 ,6% de palladium, et entre 20,1 et 23,8% de cuivre. For this purpose, the invention relates to a timepiece or jewelery manufactured in a nickel-free and cobalt-free gold alloy whose composition comprises, by weight, between 75% and 77.5% of gold, between 1, 2 and 1.6% of palladium, and between 20.1 and 23.8% of copper.
L'invention concerne également un alliage à base d'or, dit or rouge 18 carats, caractérisé en ce qu'il est constitué d'un mélange comportant en masse : - entre 75% et 77,5% d'or, The invention also relates to a gold-based alloy, called 18-carat red gold, characterized in that it consists of a mixture comprising: - between 75% and 77.5% of gold,
- de 1 ,2% à 1 ,6% de palladium; from 1.2% to 1.6% of palladium;
- de 20,1 % à 23,8% de cuivre, et ne comporte ni nickel ni cobalt. Avantageusement l'alliage à base d'or (y compris celui de la pièce d'horlogerie de l'invention) comprend entre 1 ,35 et 1 ,45 % et, de préférence, 1 ,4% en poids de palladium. from 20.1% to 23.8% of copper, and does not contain any nickel or cobalt. Advantageously, the gold-based alloy (including that of the timepiece of the invention) comprises between 1.35 and 1.45% and, preferably, 1.4% by weight of palladium.
De préférence, l'alliage à base d'or (y compris celui de la pièce d'horlogerie de l'invention) comprend en outre entre 0,45 et 2% en poids de d'un élément choisi parmi l'ensemble comprenant le fer, le zinc, l'argent et l'indium ou une combinaison de ces derniers. Preferably, the gold-based alloy (including that of the timepiece of the invention) further comprises between 0.45 and 2% by weight of a member selected from the group consisting of iron, zinc, silver and indium or a combination of these.
Selon un mode de réalisation préféré, l'alliage à base d'or (y compris celui de la pièce d'horlogerie de l'invention) comprend 0,48% en poids de platine. According to a preferred embodiment, the gold-based alloy (including that of the timepiece of the invention) comprises 0.48% by weight of platinum.
Selon un autre mode de réalisation préféré, l'alliage à base d'or (y compris celui de la pièce d'horlogerie de l'invention) comprend en outre 1 ,81 % en poids d'argent. According to another preferred embodiment, the gold-based alloy (including that of the timepiece of the invention) further comprises 1.81% by weight of silver.
Avantageusement l'alliage à base d'or (y compris celui de la pièce d'horlogerie de l'invention) comprend en outre en poids au plus 1 % de l'un quelconque ou une combinaison des éléments choisis parmi l'ensemble comprenant le gallium, le magnésium, le calcium, le lithium, l'aluminium, le sodium, le titane, le molybdène, l'étain, le silicium, le rhodium, le zirconium, le potassium, et le chrome. Advantageously, the gold-based alloy (including that of the timepiece of the invention) further comprises by weight at most 1% of any one or a combination of the elements selected from the group consisting of gallium, magnesium, calcium, lithium, aluminum, sodium, titanium, molybdenum, tin, silicon, rhodium, zirconium, potassium, and chromium.
De préférence, l'alliage à base d'or (y compris celui de la pièce d'horlogerie de l'invention) comprend en poids au plus 0,05% d'iridium, de rhénium, ou de ruthénium et de manière avantageuse l'alliage comprend en poids 0.01 % d'iridium. Preferably, the gold-based alloy (including that of the timepiece of the invention) comprises, by weight, at most 0.05% of iridium, rhenium, or ruthenium and, advantageously, The alloy comprises by weight 0.01% iridium.
On a constaté que les pièces d'horlogerie ou de bijouterie telles que définies par les revendications annexées sont très intéressantes du point de vue de leur couleur, de leur éclat et de leur prix. Description sommaire des dessins It has been found that timepieces or jewelery as defined by the appended claims are very interesting from the point of view of their color, their brightness and their price. Brief description of the drawings
D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée qui va suivre, en référence aux dessins annexés, dans lesquels : Other features and advantages of the invention will appear on reading the detailed description which follows, with reference to the appended drawings, in which:
- la figure 1 représente, le changement de couleur ΔΕ pour les alliages No126, No128, No129 et No139 et deux ors rouges 18 carats de l'art antérieur à savoir les alliages No 1 13 et No 103 en fonction du temps dans un test NaCI saturé à 70 °C. - la figure 2 représente, le changement de couleur ΔΕ pour les alliages No126, No 128, No 129 et No 139 et deux ors rouges 18 carats de l'art antérieur à savoir les alliages No1 13 et No103 en fonction du temps dans un test de sueur synthétique à 40 °C FIG. 1 shows the color change ΔΕ for the alloys No126, No128, No129 and No139 and two 18-carat red golds of the prior art, namely the alloys Nos. 13 and 103 as a function of time in an NaCl test. saturated at 70 ° C. FIG. 2 represents the color change ΔΕ for alloys No126, No.128, No.129 and No.139 and two 18-carat red golds of the prior art, namely Alloys No1 13 and No103 as a function of time in a test. synthetic sweat at 40 ° C
- la figure 3 représente, le changement de couleur ΔΕ pour les alliages N 26, N 28, N 29 et N 39 et deux ors rouges 18 carats de l'art antérieur à savoir les alliages No1 13 et No103 en fonction du temps dans un test de pluie acide à 70 °C. FIG. 3 represents the color change ΔΕ for alloys N 26, N 28, N 29 and N 39 and two 18-carat red golds of the prior art, namely alloys No 13 and No 103 as a function of time in a acid rain test at 70 ° C.
Le tableau 1 montre des exemples de compositions d'alliages en o poids selon l'invention à l'exception des alliages No 103 et No 1 13 qui représentent respectivement des compositions d'alliage d'or rouge 18 carats de l'art antérieur. Table 1 shows examples of alloy compositions in weight according to the invention with the exception of alloys No. 103 and No. 13 which respectively represent 18-carat red gold alloy compositions of the prior art.
Tableau 1 Table 1
Chacun de ces alliages d'or a été soumis à trois tests de décoloration respectivement dans une solution de chlorure de sodium saturé, dans une solution de sueur synthétique et dans une solution de pluie acide puis la décoloration de chaque alliage a été mesurée. Le Tableau 2 donne les compositions des solutions de test et les conditions thermiques dans lesquelles elles ont été utilisées. Les compositions des tests « sueur synthétique » et « pluie acide » représentent des conditions qu'une pièce d'horlogerie peut subir au porter notamment dans des régions climatiques asiatiques. Each of these gold alloys was subjected to three bleaching tests respectively in a solution of saturated sodium chloride, in a solution of synthetic sweat and in an acid rain solution and the discoloration of each alloy was measured. Table 2 gives the compositions of the test solutions and the thermal conditions in which they were used. The compositions of the tests "synthetic sweat" and "acid rain" represent conditions that a timepiece can suffer to wear especially in Asian climatic regions.
Tableau 2 Table 2
Les trois tests de décoloration ont été effectués sur des rondelles d'alliage d'or présentant un diamètre de 20 mm et une épaisseur de 2.5 mm. Les rondelles ont été polies successivement avec des papiers abrasifs de grains 320, 600, 1200, 2400 jusqu'au feutre contenant des particules de diamant de 3 à 1 pm de diamètre moyen. The three discoloration tests were carried out on gold alloy rings having a diameter of 20 mm and a thickness of 2.5 mm. The washers were polished successively with grain abrasive paper 320, 600, 1200, 2400 to the felt containing diamond particles 3 to 1 μm in average diameter.
Chaque rondelle a été immergée dans 200 ml d'une solution correspondant aux tests présentés dans le tableau 2 pendant 42 jours. Chaque rondelle était placée au fond d'un flacon fermé (0 65 mm, en polypropylène). Pour des raisons statistiques, 3 rondelles de chaque alliage du tableau 1 ont été testées pour chacun des trois tests. Each pellet was immersed in 200 ml of a solution corresponding to the tests shown in Table 2 for 42 days. Each washer was placed at the bottom of a closed bottle (0 65 mm, polypropylene). For statistical reasons, 3 slices of each alloy of Table 1 were tested for each of the three tests.
Les rondelles ont été sorties et rincées pour en mesurer la décoloration à différents instants durant la période de test et en constater évolution. Les courbes des figures 1 à 3 ont ainsi pu être tracées. The washers were taken out and rinsed to measure the discoloration at different times during the test period and to see evolution. The curves of Figures 1 to 3 could thus be plotted.
Le changement de couleur ou décoloration ΔΕί après i jours a été calculé selon la formule suivante : où L*, a*, b* sont les valeurs colorimétriques des échantillons mesurés avec un colorimètre « Varian Cary 1 E» doté d'une sphère d'intégration de 70mm. The color change or fading ΔΕί after i days has been calculated according to the following formula: where L * , a * , b * are the colorimetric values of the samples measured with a "Varian Cary 1 E" colorimeter with a 70mm integrating sphere.
Les résultats du test de décoloration dans la solution de NaCI saturé à 70°C montrent que les alliages d'or rouge selon l'invention, alliages Ν 26, Ν 28, Ν 29 et Ν 39 décolorent nettement moins rapidement que l'alliage d'or rouge 18 carats de l'art antérieur Ν 03 dans cette atmosphère saline. Ces résultats sont illustrés à la figure 1 où l'on voit que la variation de ΔΕ entre l'alliage Ν 03 de l'art antérieur et l'alliage Ν 29 selon l'invention évolue de 1 .5 après 2 jours à pratiquement 3 après une période de 42 jours. The results of the discoloration test in the saturated NaCl solution at 70 ° C show that the red gold alloys according to the invention, alloys 26, 28, 29 and 39 discolour significantly less rapidly than the alloy. 18-carat red gold of the prior art Ν 03 in this saline atmosphere. These results are illustrated in FIG. 1, where it can be seen that the variation of ΔΕ between alloy Ν 03 of the prior art and alloy Ν 29 according to the invention changes from 1.5 after 2 days to practically 3 after a period of 42 days.
Les résultats du test de décoloration dans la solution de sueur synthétique à 40 °C montrent que que les alliages d'or rouge selon l'invention, alliages N °126, Ν 28, Ν 29 et Ν 39 décolorent nettement moins rapidement que l'alliage d'or rouge 18 carats de l'art antérieur Ν 03 dans cette atmosphère de sueur. Ces résultats sont illustrés à la figure 2 où l'on voit que la variation de ΔΕ entre l'alliage Ν 03 de l'art antérieur et l'alliage No 129 selon l'invention évolue de 0.4 après 2 jours à pratiquement 0.8 après une période de 42 jours. The results of the discoloration test in the synthetic sweat solution at 40 ° C. show that the red gold alloys according to the invention, alloys Nos. 126, 28, 29 and 39 discolour distinctly. less rapidly than the 18-carat red gold alloy of the prior art Ν 03 in this atmosphere of sweat. These results are illustrated in FIG. 2 where it can be seen that the variation of ΔΕ between alloy Ν 03 of the prior art and alloy No. 129 according to the invention changes from 0.4 after 2 days to practically 0.8 after period of 42 days.
Les résultats du test de décoloration dans la solution de pluie acide à 70°C montrent que les alliages d'or rouge selon l'invention alliages : Ν 26, N °128, Ν 29 et Ν 39, décolorent nettement moins rapidement que l'or rouge 18 carats de l'art antérieur Ν 13 dans cette atmosphère acide. Ces résultats sont illustrés à la figure 3 où l'on voit que la variation de ΔΕ entre l'alliage N °1 13 de l'art antérieur et l'alliage N °129 selon l'invention évolue de 0.5 après 5 jours à pratiquement 2 après une période de 40 jours. The results of the discoloration test in the acid rain solution at 70 ° C show that the red gold alloys according to the invention alloys: Ν 26, No. 128, Ν 29 and Ν 39, discolour significantly less rapidly than the 18-carat red gold of the prior art Ν 13 in this acid atmosphere. These results are illustrated in FIG. 3, where it can be seen that the variation of ΔΕ between alloy No. 1 13 of the prior art and alloy No. 129 according to the invention changes from 0.5 after 5 days to almost 2 after a period of 40 days.
Ces tests montrent donc clairement que la résistance à la décoloration des alliages selon l'invention est nettement meilleure par rapport aux alliages d'or 18 carats de l'art antérieur dans les atmosphères salines et acides et légèrement meilleures dans le cas du test à la sueur synthétique. These tests clearly show that the fade resistance of the alloys according to the invention is clearly better compared to the 18-karat gold alloys of the prior art in saline and acidic atmospheres and slightly better in the case of the test to the synthetic sweat.

Claims

R EV EN D I CATI O NS R EV EN DI CATI O NS
1 . Pièce d'horlogerie ou de bijouterie fabriquée dans un alliage d'or sans nickel et sans cobalt dont la composition comprend en poids entre 75% et 77,5% d'or, entre 1 ,2 et 1 ,6% de palladium et entre 20,1 et 23,8% de cuivre 1. Timepiece or jewelery made of a nickel-free and cobalt-free gold alloy, the composition of which comprises, by weight, between 75% and 77.5% of gold, between 1, 2 and 1, 6% of palladium and between 20.1 and 23.8% copper
2. Pièce d'horlogerie ou de bijouterie ou de joaillerie selon la revendication 1 , caractérisée en ce que l'alliage comprend entre 1 ,35 et 1 ,45 % et de préférence 1 ,4% en poids de palladium. 2. Timepiece or jewelery according to claim 1, characterized in that the alloy comprises between 1, 35 and 1, 45% and preferably 1, 4% by weight of palladium.
3. Pièce d'horlogerie, de bijouterie ou de joaillerie selon la revendication 1 , caractérisée en ce que l'alliage comprend en outre entre 0,45 et 2% en poids de d'un élément choisi parmi le fer, zinc, l'argent et l'indium ou une combinaison de ces derniers. 3. Timepiece, jewelery or jewelery according to claim 1, characterized in that the alloy further comprises between 0.45 and 2% by weight of a member selected from iron, zinc, money and indium or a combination of these.
4. Pièce d'horlogerie de bijouterie ou de joaillerie selon la revendication s, caractérisée en ce que l'alliage comprend 0,48% de platine. 4. A timepiece for jewelery or jewelry according to claim s, characterized in that the alloy comprises 0.48% platinum.
5. Pièce d'horlogerie de bijouterie ou de joaillerie selon la revendication 4, caractérisée en ce que l'alliage comprend 1 ,81 % d'argent. 5. Jewelery or jewelery timepiece according to claim 4, characterized in that the alloy comprises 1.81% of silver.
6. Pièce d'horlogerie, de bijouterie ou de joaillerie selon l'une des revendications 1 à 5, caractérisée en ce que l'alliage comprend en poids au plus 1 % de l'un quelconque ou une combinaison des éléments choisis parmi, gallium, magnésium, calcium, lithium, aluminium, sodium, titane, molybdène, étain, silicium, rhodium zirconium, potassium, et chrome de l'un ou d'une combinaison des ces éléments. 6. Timepiece, jewelery or jewelery according to one of claims 1 to 5, characterized in that the alloy comprises by weight at most 1% of any one or a combination of elements selected from gallium , magnesium, calcium, lithium, aluminum, sodium, titanium, molybdenum, tin, silicon, rhodium zirconium, potassium, and chromium of one or a combination of these elements.
7. Pièce d'horlogerie, de bijouterie ou de joaillerie selon l'une des revendications 1 à 5, caractérisée en ce que l'alliage comprend en poids au plus 0,05% d'un élément choisi parmi l'iridium, rhénium, ruthénium. 7. Timepiece, jewelery or jewelery according to one of claims 1 to 5, characterized in that the alloy comprises by weight at most 0.05% of an element selected from iridium, rhenium, ruthenium.
8. Pièce d'horlogerie, de bijouterie ou de joaillerie selon la revendication 7, caractérisée en ce que l'alliage comprend en poids 0,01 % d'iridium. 8. Timepiece, jewelery or jewelery according to claim 7, characterized in that the alloy comprises by weight 0.01% iridium.
9. Alliage à base d'or, dit or rouge 18 carats, caractérisé en ce qu'il est constitué d'un mélange comportant en masse : 9. Alloy based on gold, said 18-carat red gold, characterized in that it consists of a mixture comprising in mass:
- entre 75% et 77,5%d'or, - de 1 ,2% à 1 ,6% de palladium; between 75% and 77.5% of gold, from 1.2% to 1.6% of palladium;
- de 20,1 % à 23,8% de cuivre, et ne comporte ni nickel ni cobalt. from 20.1% to 23.8% of copper, and does not contain any nickel or cobalt.
10. Alliage à base d'or selon la revendication 9, caractérisé en ce que le teneur en masse du palladium est compris entre 1 ,35% et 1 ,45%. 10. Gold-based alloy according to claim 9, characterized in that the mass content of the palladium is between 1.35% and 1.45%.
1 1 . Alliage à base d'or selon l'une des revendications 9 ou 10, caractérisé en ce qu'il comporte entre 0,5% et 2,0% en poids d'un élément choisi parmi l'ensemble comprenant le fer, le zinc, l'argent et l'indium, ou une combinaison de ces derniers. 1 1. Gold-based alloy according to one of claims 9 or 10, characterized in that it comprises between 0.5% and 2.0% by weight of a member selected from the group comprising iron, zinc , silver and indium, or a combination of these.
12. Alliage à base d'or selon la revendication 1 1 , caractérisé en ce qu'il comporte 0,48% de platine. 12. Alloy based on gold according to claim 1 1, characterized in that it comprises 0.48% platinum.
13. Alliage à base d'or selon la revendication 12, caractérisé en ce qu'il comporte 1 ,81 % d'argent. 13. Gold-based alloy according to claim 12, characterized in that it comprises 1.81% of silver.
14. Alliage à base d'or selon l'une des revendications 9 à 13, caractérisé en ce qu'il comporte au maximum 1 ,0% en poids de l'un quelconque ou d'une combinaison des éléments choisis parmi l'ensemble comprenant le gallium, le magnésium, le calcium, le lithium, l'aluminium, le sodium, le titane, le molybdène, l'étain, le silicium, le rhodium, le zirconium, le potassium, et le chrome. 14. Gold-based alloy according to one of claims 9 to 13, characterized in that it comprises at most 1, 0% by weight of any one or a combination of the elements selected from the set comprising gallium, magnesium, calcium, lithium, aluminum, sodium, titanium, molybdenum, tin, silicon, rhodium, zirconium, potassium, and chromium.
15. Alliage à base d'or selon l'une des revendications 9 à 13, caractérisé en ce qu'il comporte au maximum 0,5% en poids de l'un quelconque ou d'une combinaison des éléments choisis parmi l'ensemble comprenant l'iridium, le rhénium, et le ruthénium. 15. Gold-based alloy according to one of claims 9 to 13, characterized in that it comprises at most 0.5% by weight of any one or a combination of the elements selected from the set including iridium, rhenium, and ruthenium.
16. Alliage à base d'or selon la revendication 15, caractérisé en ce qu'il comporte 0,01 % d'iridium. 16. Gold-based alloy according to claim 15, characterized in that it comprises 0.01% iridium.
EP12784240.9A 2011-11-08 2012-11-07 Gold timepiece or jewellery part Active EP2776597B1 (en)

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IN2014CN04166A (en) 2015-07-17
EP2776597B1 (en) 2016-02-24
JP2016033263A (en) 2016-03-10
TW201335389A (en) 2013-09-01
HK1247967A1 (en) 2018-10-05
US20140305164A1 (en) 2014-10-16
CN104011235A (en) 2014-08-27
CN107604195A (en) 2018-01-19
CH705653B1 (en) 2013-04-30
JP2014530962A (en) 2014-11-20
JP6280532B2 (en) 2018-02-14
US10455908B2 (en) 2019-10-29
TWI551701B (en) 2016-10-01
DE212012000198U1 (en) 2014-07-17
WO2013068365A1 (en) 2013-05-16

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