CH715061A2 - Timepiece or jewelry or fine gold alloy jewelry. - Google Patents
Timepiece or jewelry or fine gold alloy jewelry. Download PDFInfo
- Publication number
- CH715061A2 CH715061A2 CH00697/18A CH6972018A CH715061A2 CH 715061 A2 CH715061 A2 CH 715061A2 CH 00697/18 A CH00697/18 A CH 00697/18A CH 6972018 A CH6972018 A CH 6972018A CH 715061 A2 CH715061 A2 CH 715061A2
- Authority
- CH
- Switzerland
- Prior art keywords
- alloy
- gold
- jewelry
- weight
- elements
- Prior art date
Links
Classifications
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- 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
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- 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
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- 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
- G04B19/00—Indicating the time by visual means
- G04B19/06—Dials
- G04B19/12—Selection of materials for dials or graduations markings
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- 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)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Adornments (AREA)
Abstract
L’invention concerne une pièce d’horlogerie ou de bijouterie ou de joaillerie fabriquée dans un alliage d’or sans zinc, sans germanium, sans nickel, sans cobalt et sans indium, ledit alliage comprenant en poids entre 75% et 77,5% d’or, entre 0,5 et 3% de palladium, entre 10 à 18% d’argent et entre 5 et 13% de cuivre, les pourcentages respectifs de l’ensemble des éléments de l’alliage se complétant jusqu’à 100%.The invention relates to a timepiece or a piece of jewelry made of a zinc-free, germanium-free, nickel-free, cobalt-free and indium-free gold alloy, said alloy comprising by weight between 75% and 77.5% of gold, between 0.5 and 3% of palladium, between 10 to 18% of silver and between 5 and 13% of copper, the respective percentages of all the elements of the alloy complementing up to 100 %.
Description
DescriptionDescription
Domaine de l’invention [0001] L’invention concerne une pièce d’horlogerie ou de bijouterie ou de joaillerie fabriquée dans un alliage d’or.FIELD OF THE INVENTION The invention relates to a timepiece or a piece of jewelry made of a gold alloy.
[0002] L’invention concerne également un alliage à base d’or, dit or jaune 18 carats et plus particulièrement un tel alliage présentant des caractéristiques de ternissement et de décoloration améliorées.The invention also relates to a gold-based alloy, known as 18-carat yellow gold and more particularly such an alloy having improved tarnishing and discoloration characteristics.
[0003] 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, bijouterie and jewelry.
Arrière-plan de l’invention [0004] Les ors jaunes 18 carats suivant la norme ISO 8654 représentent les alliages d’or les plus utilisés sur le marché horloger notamment pour la réalisation de pièces d’habillage horloger, typiquement des boites de montres, des bracelets, etc.. Malheureusement, les alliages d’or jaune d’aspect esthétique intéressant se ternissent ou se décolorent au cours du temps. Dans le cas du ternissement, la couleur passe du jaune à orange, bleue jusqu’à noire. Dans le cas de la décoloration, la couleur passe du jaune au jaune pâle. Ces phénomènes conduisent à des réclamations de clients insatisfaits de ces transformations. Tous ces phénomènes ont largement été étudiés.BACKGROUND OF THE INVENTION [0004] The 18-carat yellow gold according to ISO standard 8654 represents the gold alloys most used on the watch market, in particular for the production of watch coverings, typically watch cases, bracelets, etc. Unfortunately, the yellow gold alloys of attractive aesthetic appearance tarnish or discolour over time. In the case of tarnishing, the color changes from yellow to orange, blue to black. In the case of discoloration, the color changes from yellow to pale yellow. These phenomena lead to complaints from customers dissatisfied with these transformations. All these phenomena have been widely studied.
[0005] Dans le cas du ternissement des métaux précieux, plusieurs études ont été lancées pour montrer l’implication des teneurs en cuivre et argent, l’influence des phases. L’addition d’éléments comme le zinc ou le germanium a été proposée pour améliorer la résistance au ternissement des alliages. Le zinc a malheureusement l’inconvénient de polluer les fours lors des coulées. Le germanium est un élément peu soluble dans l’or, créant des structures biphasées s’il est introduit en trop grande quantité.In the case of tarnishing of precious metals, several studies have been launched to show the implication of copper and silver contents, the influence of phases. The addition of elements such as zinc or germanium has been proposed to improve the resistance to tarnishing of alloys. Zinc unfortunately has the disadvantage of polluting the furnaces during casting. Germanium is a poorly soluble element in gold, creating two-phase structures if it is introduced in too large a quantity.
[0006] Dans le cas de la décoloration, son origine a été aussi largement étudiée et décrite comme étant liée à la dissolution sélective du cuivre proche de la surface générant une augmentation de la concentration d’or à la surface jaunissant l’alliage. A ce propos, on connaît déjà les brevets EP 2 954 080 et EP 2 776 597 qui décrivent des alliages d’or rouge 18 carats qui résistent à la décoloration dans certaines conditions au porter.In the case of discoloration, its origin has also been widely studied and described as being linked to the selective dissolution of copper close to the surface generating an increase in the concentration of gold on the surface yellowing the alloy. In this regard, we already know the patents EP 2 954 080 and EP 2 776 597 which describe 18 carat red gold alloys which resist fading under certain conditions when worn.
[0007] Il n’existe par contre aucun alliage du marché d’or jaune qui a été développé avec des caractéristiques de ternissement et décoloration améliorées par rapport aux ors jaunes standard du marché.On the other hand, there is no alloy on the yellow gold market which has been developed with tarnishing and discoloration characteristics improved compared to standard yellow gold on the market.
Claims (19)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH00697/18A CH715061A2 (en) | 2018-06-01 | 2018-06-01 | Timepiece or jewelry or fine gold alloy jewelry. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH00697/18A CH715061A2 (en) | 2018-06-01 | 2018-06-01 | Timepiece or jewelry or fine gold alloy jewelry. |
Publications (1)
Publication Number | Publication Date |
---|---|
CH715061A2 true CH715061A2 (en) | 2019-12-13 |
Family
ID=68806380
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH00697/18A CH715061A2 (en) | 2018-06-01 | 2018-06-01 | Timepiece or jewelry or fine gold alloy jewelry. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH715061A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4015662A1 (en) * | 2020-12-18 | 2022-06-22 | Omega SA | Gold timepiece or jewellery |
-
2018
- 2018-06-01 CH CH00697/18A patent/CH715061A2/en unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4015662A1 (en) * | 2020-12-18 | 2022-06-22 | Omega SA | Gold timepiece or jewellery |
WO2022128178A1 (en) * | 2020-12-18 | 2022-06-23 | Omega Sa | Timepiece, ornament or jewellery item made of gold |
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