EP2420583A2 - Perfectly white, tarnish-proof noble metal jewellery alloy - Google Patents

Perfectly white, tarnish-proof noble metal jewellery alloy Download PDF

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Publication number
EP2420583A2
EP2420583A2 EP11005688A EP11005688A EP2420583A2 EP 2420583 A2 EP2420583 A2 EP 2420583A2 EP 11005688 A EP11005688 A EP 11005688A EP 11005688 A EP11005688 A EP 11005688A EP 2420583 A2 EP2420583 A2 EP 2420583A2
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Prior art keywords
jewelery
platinum
tarnish
rhodium
alloy
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EP11005688A
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German (de)
French (fr)
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EP2420583A8 (en
EP2420583B1 (en
EP2420583A3 (en
Inventor
Thomas Laag
Heinz-Günter Dr. Schenzel
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C Hafner GmbH and Co KG
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C Hafner GmbH and Co KG
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Priority claimed from DE201010026930 external-priority patent/DE102010026930A1/en
Priority claimed from DE201020010147 external-priority patent/DE202010010147U1/en
Application filed by C Hafner GmbH and Co KG filed Critical C Hafner GmbH and Co KG
Priority to EP16002040.0A priority Critical patent/EP3135781A1/en
Publication of EP2420583A2 publication Critical patent/EP2420583A2/en
Publication of EP2420583A8 publication Critical patent/EP2420583A8/en
Publication of EP2420583A3 publication Critical patent/EP2420583A3/en
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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
    • C22C5/04—Alloys based on a platinum group metal
    • 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

Definitions

  • the invention relates to an ideal white, tarnish-resistant precious metal jewelery alloy containing rhodium and platinum.
  • Previously known jewelry alloys have not reached the color and gloss of rhodium and were in particular not sufficiently tarnish-resistant. Pure rhodium is only of limited use for the production of jewelery such as jewelery, watches, jewelery or high-quality writing utensils because it is difficult to melt and pour, and rhodium can only be shaped well when hot. In addition, his powder metallurgical processing is very expensive and does not meet the high standards of gloss and polishability.
  • a precious metal jewelery alloy which has 40 to 70% by weight of rhodium and 60 to 30% by weight of platinum, with the proportions by weight of rhodium and platinum being essentially equal to 100% by weight.
  • An advantageous development of the invention provides that the precious metal jewelry alloy 45 to 70 wt .-% rhodium and 55 to 30 wt .-% platinum.
  • a further advantageous embodiment of the invention provides that the precious metal jewelry alloy 45 to 65 wt .-% rhodium and 55 to 35 wt .-% platinum.
  • a further advantageous embodiment of the invention provides that the precious metal jewelery alloy according to the invention 47 to 53, preferably 48 to 52 wt .-% rhodium and 53 to 47 wt .-%, preferably 52 to 48 wt .-% platinum.
  • a further advantageous embodiment of the invention provides that the jewelery alloy according to the invention comprises about 50% by weight of rhodium and about 50% by weight of platinum.
  • the alloy according to the invention is characterized in that it has tarnish resistance and an ideal white color. It has a hard hardness in the range of 350 to 370 HV and a soft hardness in the range of 160 to 170 HV and thus meets the requirements of the watch and jewelry industry in terms of sufficient wear resistance and the durability of filigree designs.
  • the jewelery alloy according to the invention has the advantage that it is not brittle and therefore easily deformable, in particular by hot forming. Another advantage of the alloy according to the invention is that it is particularly well suited for jewelry casting by the lost wax process.
  • the precious metal jewelery alloy according to the invention comprises ruthenium, iridium and / or gold up to a proportion of up to 20% by weight, whereby platinum is replaced by ruthenium, iridium and / or gold, so that the proportions of rhodium and platinum and the aforementioned admixtures add up to substantially 100% by weight.
  • platinum is replaced by ruthenium, iridium and / or gold, so that the proportions of rhodium and platinum and the aforementioned admixtures add up to substantially 100% by weight.
  • a further advantageous development of the invention provides that the precious metal jewelery alloy has palladium in a proportion by weight of up to 30%, with platinum being replaced by palladium.
  • Such a measure has the advantage that in this way the expensive platinum can be replaced by the cheaper palladium without significantly impairing the high-quality properties of the noble metal jewelery alloy according to the invention.
  • the precious metal jewelery alloy will be explained with reference to an exemplary embodiment in which 40 to 70, preferably 50 wt% Rh and 60 to 30, preferably 50 wt% Pt are used.
  • the latter alloy has an atomic ratio Rh / Pt of 65:35, so that two-thirds of the atoms of the alloy are rhodium atoms.
  • the proportion of rhodium and / or platinum thus replenishes substantially to 100 wt .-%, apart from conventional admixtures and impurities.
  • the precious metal jewelry alloy 45 to 70 wt .-% rhodium and 55 to 30 wt .-% of platinum, again preferred that the content of rhodium is preferably 45 to 65 wt .-%, more preferably 47 to 53 Wt .-% and particularly preferably 48 to 52 wt .-%, and that the content of platinum 55 to 30 wt .-%, preferably 55 to 35 wt .-%, more preferably 53 to 47 wt .-% and in particular 52 to 48 wt .-% is.
  • the above alloy with about 50% by weight rhodium and about 50% by weight platinum is sufficient to achieve the ideal white color and luster of electrodeposited rhodium or at least approximately this white color and luster to achieve.
  • the described alloy is very well suited for investment casting by the lost wax process, whereby conventional equipment and investments can be used for the casting of platinum alloys.
  • the castings produced from the described alloy have little to no porosity, the hardness is 160 to 170 HV, and surface defects due to reactions with investment material were practically not observed.
  • the unexpectedly low solidification shrinkage of the described alloy compared to other jewelry materials such as platinum 950 or white gold 750 prevents shrinkage porosity, which is a major problem in jewelery casting.
  • Another advantage is that gas and embedding mass reactions are almost impossible since both rhodium and platinum have high chemical resistance.
  • a wire made from the described alloy has a hardness in the range of 160 to 170 HV in the soft state and from 350 to 370 HV in the hard state. From the described alloy it is therefore possible to produce simple semi-finished products, wherein good deformability can be achieved by hot forming.
  • Ruthenium, iridium and / or gold can also be added to the precious metal jewelry alloy described in a proportion by weight of up to 20% by weight, with platinum being replaced by ruthenium, iridium and / or gold, so that the proportions of rhodium and platinum and the aforementioned admixtures add up to substantially 100 wt .-%.
  • the described precious metal jewelry alloy in a particularly advantageous manner for the production of ideal white, tarnish jewelery, such as jewelry of all kinds, jewelery, watches, watch cases and writing instruments, to name but a few of the preferred applications enumerate, is suitable.

Abstract

The ideal-white, tarnish-resistant precious metal jewellery alloy comprises rhodium (40-70 wt.%), platinum (60-30 wt.%), and ruthenium, iridium and/or gold (20 wt.%), and/or palladium (30 wt.%), where total portion of rhodium, platinum and additives is 100% and the platinum is replaced through palladium.

Description

Die Erfindung betrifft eine ideal-weiße, anlaufbeständige Edelmetall-Schmucklegierung, enthaltend Rhodium und Platin.The invention relates to an ideal white, tarnish-resistant precious metal jewelery alloy containing rhodium and platinum.

In der Schmuck- und Uhrenindustrie wird eine besonders weiße Metallfarbe einer Schmucklegierung gewünscht, da hierdurch der Glanz von weißen Edelsteinen, insbesondere von Diamanten, in besonders guter Weise unterstützt wird.In the jewelery and watch industry, a particularly white metal color of a jewelery alloy is desired, since in this way the gloss of white gemstones, in particular of diamonds, is supported in a particularly good manner.

Bei Weißgold-Schmucklegierungen wird deren weiße Farbe häufig durch eine zusätzliche galvanische Rhodinierung realisiert, da Rhodium das Edelmetall mit der besten weißen Farbe ist. Der Nachteil einer galvanischen Rhodinierung liegt in deren begrenzter Lebensdauer, da die üblicherweise 0,2 µm dicke Rhodiumschicht durch den Gebrauch des Schmuckstücks verschlissen wird. Das Weißgold-Grundmaterial des Schmuckstücks wird dadurch sichtbar und beeinträchtigt das Erscheinungsbild des Schmuckstücks, da der Glanz und die Farbe von Weißgold schlechter als die von Rhodium ist.In white gold jewelry alloys their white color is often realized by an additional galvanic rhodium plating, as rhodium with the precious metal the best white color is. The disadvantage of a galvanic rhodium plating lies in their limited life, since the usually 0.2 micron thick rhodium layer is worn by the use of the jewelry piece. The white gold base material of the piece of jewelry is thereby visible and affects the appearance of the piece of jewelry, since the gloss and the color of white gold is worse than that of rhodium.

Bisher bekannte Schmucklegierungen haben die Farbe und den Glanz von Rhodium nicht erreicht und waren insbesondere auch nicht ausreichend anlaufbeständig. Reines Rhodium eignet sich nur begrenzt zur Herstellung von Schmuckstücken wie Schmuck, Uhren, Juwelierwaren oder hochwertigen Schreibgeräten da es sich nur schwierig schmelzen und gießen lässt und Rhodium nur warm gut verformbar ist. Außerdem ist seine pulvermetallurgische Verarbeitung sehr aufwendig und erfüllt nicht die hohen Ansprüche an Glanz und Polierbarkeit.Previously known jewelry alloys have not reached the color and gloss of rhodium and were in particular not sufficiently tarnish-resistant. Pure rhodium is only of limited use for the production of jewelery such as jewelery, watches, jewelery or high-quality writing utensils because it is difficult to melt and pour, and rhodium can only be shaped well when hot. In addition, his powder metallurgical processing is very expensive and does not meet the high standards of gloss and polishability.

Es ist daher Aufgabe der vorliegenden Erfindung, eine ideal-weiße, anlaufbeständige Edelmetall-Schmucklegierung zu schaffen, die sich insbesondere zur Herstellung von Schmuckstücken wie Schmuck, Uhren, Juwelierwaren oder Schreibgeräte eignet.It is therefore an object of the present invention to provide an ideal white, tarnish precious metal jewelry alloy, which is particularly suitable for the production of jewelry such as jewelry, watches, jewelry or writing instruments.

Diese Aufgabe wird erfindungsgemäß durch eine Edelmetall-Schmucklegierung gelöst, die 40 bis 70 Gew.-% Rhodium und 60 bis 30 Gew.-% Platin aufweist, wobei sich die Gewichtsanteile von Rhodium und Platin im Wesentlichen zu 100 Gew.-% ergänzen.This object is achieved according to the invention by a precious metal jewelery alloy which has 40 to 70% by weight of rhodium and 60 to 30% by weight of platinum, with the proportions by weight of rhodium and platinum being essentially equal to 100% by weight.

Eine vorteilhafte Weiterbildung der Erfindung sieht vor, dass die Edelmetall-Schmucklegierung 45 bis 70 Gew.-% Rhodium und 55 bis 30 Gew.-% Platin aufweist.An advantageous development of the invention provides that the precious metal jewelry alloy 45 to 70 wt .-% rhodium and 55 to 30 wt .-% platinum.

Eine weitere vorteilhafte Weiterbildung der Erfindung sieht vor, dass die Edelmetall-Schmucklegierung 45 bis 65 Gew.-% Rhodium und 55 bis 35 Gew.-% Platin aufweist.A further advantageous embodiment of the invention provides that the precious metal jewelry alloy 45 to 65 wt .-% rhodium and 55 to 35 wt .-% platinum.

Eine weitere vorteilhafte Weiterbildung der Erfindung sieht vor, dass die erfindungsgemäße Edelmetall-Schmucklegierung 47 bis 53, vorzugsweise 48 bis 52 Gew.-% Rhodium und 53 bis 47 Gew.-%, vorzugsweise 52 bis 48 Gew.-% Platin aufweist.A further advantageous embodiment of the invention provides that the precious metal jewelery alloy according to the invention 47 to 53, preferably 48 to 52 wt .-% rhodium and 53 to 47 wt .-%, preferably 52 to 48 wt .-% platinum.

Eine weitere vorteilhafte Weiterbildung der Erfindung sieht vor, dass die erfindungsgemäße Schmucklegierung ungefähr 50 Gew.-% Rhodium und ungefähr 50 Gew.-% Platin aufweist.A further advantageous embodiment of the invention provides that the jewelery alloy according to the invention comprises about 50% by weight of rhodium and about 50% by weight of platinum.

Die erfindungsgemäße Legierung zeichnet sich dadurch aus, dass sie anlaufbeständig und eine ideal-weiße Farbe besitzt. Sie weist eine Härte hart im Bereich von 350 bis 370 HV und eine Härte weich im Bereich von 160 bis 170 HV auf und erfüllt somit die Anforderungen der Uhren- und Schmuckindustrie in Bezug auf eine ausreichende Verschleißbeständigkeit sowie der Haltbarkeit von filigranen Konstruktionen. Die erfindungsgemäße Schmucklegierung besitzt den Vorteil, dass sie nicht spröde und daher gut verformbar, insbesondere durch Warmumformen, ist. Ein weiterer Vorteil der erfindungsgemäßen Legierung besteht darin, dass sie sich insbesondere sehr gut für Schmuckguss nach dem Wachsausschmelzverfahren eignet.The alloy according to the invention is characterized in that it has tarnish resistance and an ideal white color. It has a hard hardness in the range of 350 to 370 HV and a soft hardness in the range of 160 to 170 HV and thus meets the requirements of the watch and jewelry industry in terms of sufficient wear resistance and the durability of filigree designs. The jewelery alloy according to the invention has the advantage that it is not brittle and therefore easily deformable, in particular by hot forming. Another advantage of the alloy according to the invention is that it is particularly well suited for jewelry casting by the lost wax process.

Eine vorteilhafte Weiterbildung der Erfindung sieht vor, dass die erfindungsgemäße Edelmetall-Schmucklegierung Ruthenium, Iridium und/oder Gold bis zu einem Anteil von bis zu 20 Gew.-% aufweist, wobei Platin durch Ruthenium, Iridium und/oder Gold ersetzt wird, so dass sich die Anteile von Rhodium und Platin sowie die vorgenannten Beimischungen im Wesentlichen zu 100 Gew.-% ergänzen. Eine derartige Maßnahme besitzt den Vorteil, dass die Festigkeit der Legierung weiter verbessert wird, ohne Farbe und Glanz bzw. den edlen Charackter der Legierung zu beeinträchtigen.An advantageous development of the invention provides that the precious metal jewelery alloy according to the invention comprises ruthenium, iridium and / or gold up to a proportion of up to 20% by weight, whereby platinum is replaced by ruthenium, iridium and / or gold, so that the proportions of rhodium and platinum and the aforementioned admixtures add up to substantially 100% by weight. Such a measure has the advantage that the strength of the alloy is further improved without affecting color and gloss or the noble character of the alloy.

Eine weitere vorteilhafte Weiterbildung der Erfindung sieht vor, dass die Edelmetall-Schmucklegierung Palladium in einem Gewichtsanteil von bis zu 30 % aufweist, wobei Platin durch Palladium ersetzt ist. Eine derartige Maßnahme besitzt den Vorteil, dass hierdurch das teuere Platin durch das billigere Palladium ersetzt werden kann, ohne die hochwertigen Eigenschaften der erfindungsgemäßen Edelmetall-Schmucklegierung wesentlich zu verschlechtern.A further advantageous development of the invention provides that the precious metal jewelery alloy has palladium in a proportion by weight of up to 30%, with platinum being replaced by palladium. Such a measure has the advantage that in this way the expensive platinum can be replaced by the cheaper palladium without significantly impairing the high-quality properties of the noble metal jewelery alloy according to the invention.

Im Folgenden wird die Edelmetall-Schmucklegierung anhand eines exemplarischen Ausführungsbeispiels erläutert, bei dem 40 bis 70, vorzugsweise 50 Gew.-% Rh und 60 bis 30, vorzugsweise 50 Gew.-% Pt verwendet werden. Letztere Legierung besitzt ein Atomverhältnis Rh/Pt von 65 : 35, so dass also zwei Drittel der Atome der Legierung Rhodium-Atome sind. Der Anteil von Rhodium und/oder Platin ergänzt sich also im Wesentlichen zu 100 Gew.-%, wenn man von üblichen Beimischungen und Verunreinigungen absieht.In the following, the precious metal jewelery alloy will be explained with reference to an exemplary embodiment in which 40 to 70, preferably 50 wt% Rh and 60 to 30, preferably 50 wt% Pt are used. The latter alloy has an atomic ratio Rh / Pt of 65:35, so that two-thirds of the atoms of the alloy are rhodium atoms. The proportion of rhodium and / or platinum thus replenishes substantially to 100 wt .-%, apart from conventional admixtures and impurities.

Vorzugsweise weist hierbei die Edelmetall-Schmucklegierung 45 bis 70 Gew.-% Rhodium und 55 bis 30 Gew.-% Platin auf, wobei wiederum bevorzugt wird, dass der Gehalt von Rhodium vorzugsweise 45 bis 65 Gew.-%, weiter vorzugsweise 47 bis 53 Gew.-% und insbesondere vorzugsweise 48 bis 52 Gew.-% beträgt, und dass der Gehalt von Platin 55 bis 30 Gew.-%, vorzugsweise 55 bis 35 Gew.-%, weiter vorzugsweise 53 bis 47 Gew.-% und insbesondere 52 bis 48 Gew.-% beträgt.Preferably, in this case, the precious metal jewelry alloy 45 to 70 wt .-% rhodium and 55 to 30 wt .-% of platinum, again preferred that the content of rhodium is preferably 45 to 65 wt .-%, more preferably 47 to 53 Wt .-% and particularly preferably 48 to 52 wt .-%, and that the content of platinum 55 to 30 wt .-%, preferably 55 to 35 wt .-%, more preferably 53 to 47 wt .-% and in particular 52 to 48 wt .-% is.

Überraschenderweise ergibt sich, dass die vorgenannte Legierung mit ungefähr 50 Gew.-% Rhodium und ungefähr 50 Gew.-% Platin ausreicht, um die ideal-weiße Farbe und den Glanz von galvanisch aufgebrachtem Rhodium zu erreichen oder zumindest annähernd diese weiße Farbe und diesen Glanz zu erzielen.Surprisingly, it appears that the above alloy with about 50% by weight rhodium and about 50% by weight platinum is sufficient to achieve the ideal white color and luster of electrodeposited rhodium or at least approximately this white color and luster to achieve.

Überraschenderweise hat es sich gezeigt, dass die beschriebene Legierung sehr gut für einen Schmuckguss nach dem Wachsausschmelzverfahren geeignet ist, wobei übliche Anlagen und Einbettmassen für das Gießen von Platin-Legierungen verwendet werden können. Die aus der beschriebenen Legierung hergestellten Gussteile haben kaum bis keine Porosität, die Härte beträgt 160 bis 170 HV, und Oberflächenfehler durch Reaktionen mit Einbettmasse wurde praktisch nicht beobachtet. Die unerwartet geringe Erstarrungsschrumpfung der beschriebenen Legierung im Vergleich zu anderen Schmuckwerkstoffen wie Platin 950 oder Weißgold 750 verhindert eine Schrumpfungsporosität, welches ein Hauptproblem beim Schmuckgießen darstellt. Ein weiterer Vorteil ist, dass Gas- und Einbettmassereaktionen fast ausgeschlossen sind, da sowohl Rhodium als auch Platin eine hohe chemische Beständigkeit aufweisen. Dies bedingt auch, dass ein Wiedervergießen von Resten der beschriebenen Edelmetall-Schmucklegierung ohne größere Schwierigkeiten durchführbar ist, da die beschriebene Edelmetall-Schmucklegierung nicht durch chemische Reaktionen beeinträchtigt wird. Die mögliche Wiederverwendung von Resten des Gießprozesses führt daher zu einer optimalen Materialausnutzung. Ein weiterer Vorteil der beschriebenen Legierung besteht in Verbindung mit Schmuckgießen darin, dass durch Schmuckguss hergestellte Gussteile endabmessungsnahe Ausmaße besitzen, was in Verbindung mit einer guten Wiedervergießbarkeit einen sparsamen Materialeinsatz mit sich bringt.Surprisingly, it has been found that the described alloy is very well suited for investment casting by the lost wax process, whereby conventional equipment and investments can be used for the casting of platinum alloys. The castings produced from the described alloy have little to no porosity, the hardness is 160 to 170 HV, and surface defects due to reactions with investment material were practically not observed. The unexpectedly low solidification shrinkage of the described alloy compared to other jewelry materials such as platinum 950 or white gold 750 prevents shrinkage porosity, which is a major problem in jewelery casting. Another advantage is that gas and embedding mass reactions are almost impossible since both rhodium and platinum have high chemical resistance. This also implies that re-pouring of remnants of the described precious metal jewelery alloy can be carried out without much difficulty, since the described precious metal jewelery alloy is not affected by chemical reactions. The possible reuse of remnants of the casting process therefore leads to optimal material utilization. A further advantage of the described alloy in connection with jewelery casting is that castings produced by jewelery have dimensions close to the final dimensions, which, in conjunction with good re-pourability, results in an economical use of material.

Ein aus der beschriebenen Legierung hergestellter Draht weist eine Härte im Bereich von 160 bis 170 HV im weichen und von 350 bis 370 HV im harten Zustand auf. Aus der beschriebenen Legierung lassen sich also einfache Halbzeuge herstellen, wobei eine gute Verformbarkeit durch eine Warmumformung erreicht werden kann.A wire made from the described alloy has a hardness in the range of 160 to 170 HV in the soft state and from 350 to 370 HV in the hard state. From the described alloy it is therefore possible to produce simple semi-finished products, wherein good deformability can be achieved by hot forming.

Der beschriebenen Edelmetall-Schmucklegierung kann noch Ruthenium, Iridium und/oder Gold in einem Gewichtsanteil bis zu 20 Gew.-% beigemischt werden, wobei Platin durch Ruthenium, Iridium und/oder Gold ersetzt wird, so dass sich die Anteile von Rhodium und Platin sowie die vorgenannten Beimischungen im wesentlichen zu 100 Gew.-% ergänzen.Ruthenium, iridium and / or gold can also be added to the precious metal jewelry alloy described in a proportion by weight of up to 20% by weight, with platinum being replaced by ruthenium, iridium and / or gold, so that the proportions of rhodium and platinum and the aforementioned admixtures add up to substantially 100 wt .-%.

Des weiteren kann noch vorgesehen sein, dass bis zu 50 % des Platins durch Palladium ersetzt ist, so dass die beschriebenen Edelmetall-Schmucklegierung dann bis zu 30 Gew.-% Palladium aufweist, wobei sich dann Gewichtsanteile von Rhodium, Platin und Palladium sich im wesentlichen zu 100 Gew.-% ergänzen. Diese Maßnahme hat einen positiven Einfluss auf den Materialpreis der Legierung, da Palladium wesentlich kostengünstiger ist als Platin.Furthermore, it can still be provided that up to 50% of the platinum is replaced by palladium, so that the described precious metal jewelry alloy then up to 30 wt .-% palladium, wherein then parts by weight of rhodium, platinum and palladium substantially to 100 wt .-% complete. This measure has a positive influence on the material price of the alloy, since palladium is much cheaper than platinum.

Zusammenfassend ist festzuhalten, dass sich die beschriebene Edelmetall-Schmucklegierung in besonders vorteilhafter Art und Weise zur Herstellung von ideal-weißen, anlaufbeständigen Schmuckstücken, wie Schmuck aller Art, von Juwelierartikeln, von Uhren, von Uhrengehäusen sowie von Schreibgeräten, um nur einige der bevorzugten Anwendungen aufzuzählen, eignet.In summary, it should be noted that the described precious metal jewelry alloy in a particularly advantageous manner for the production of ideal white, tarnish jewelery, such as jewelry of all kinds, jewelery, watches, watch cases and writing instruments, to name but a few of the preferred applications enumerate, is suitable.

Claims (12)

Ideal-weiße, anlaufbeständige Edelmetall-Schmucklegierung enthaltend Rhodium und Platin, dadurch gekennzeichnet, dass die Schmucklegierung Rhodium in einem Gewichtsanteil von 40 bis 70 Gew.-% und Platin in einem Gewichtsanteil von 60 bis 30 Gew.-% aufweist, wobei sich der Gewichtsanteil von Platin und der Gewichtsanteil von Rhodium im Wesentlichen zu 100 % ergänzen.Ideal-white, tarnish-resistant precious metal jewelery alloy containing rhodium and platinum, characterized in that the jewelery alloy rhodium in a weight fraction of 40 to 70 wt .-% and platinum in a weight fraction of 60 to 30 wt .-%, wherein the weight fraction of platinum and the proportion by weight of rhodium add up to substantially 100%. Ideal-weiße, anlaufbeständige Edelmetall-Schmucklegierung nach Anspruch 1, dadurch gekennzeichnet, dass die Schmucklegierung Rhodium in einem Gewichtsanteil von 45 bis 70 Gew.-% und Platin in einem Gewichtsanteil von 55 bis 60 Gew.-% aufweist.Ideal white, tarnish-resistant precious metal jewelery alloy according to claim 1, characterized in that the jewelery alloy rhodium in a weight fraction of 45 to 70 wt .-% and platinum in a weight fraction of 55 to 60 wt .-%. Ideal-weiße, anlaufbeständige Edelmetall-Schmucklegierung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Schmucklegierung Rhodium in einem Gewichtsanteil von 45 bis 65 Gew.-% und Platin in einem Gewichtsanteil von 55 bis 35 Gew.-% aufweist.Ideal-white, tarnish-resistant precious metal jewelery alloy according to one of the preceding claims, characterized in that the jewelery alloy rhodium in a weight fraction of 45 to 65 wt .-% and platinum in a weight fraction of 55 to 35 wt .-%. Ideal-weiße, anlaufbeständige Edelmetall-Schmucklegierung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Schmucklegierung Rhodium in einem Gewichtsanteil von 47 bis 53 Gew.-% und Platin einen Gewichtsanteil von 53 bis 47 Gew.-% aufweist.Ideal-white, tarnish-resistant precious metal jewelery alloy according to one of the preceding claims, characterized in that the jewelery alloy rhodium in a weight fraction of 47 to 53 wt .-% and platinum has a weight fraction of 53 to 47 wt .-%. Ideal-weiße, anlaufbeständige Edelmetall-Schmucklegierung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Schmucklegierung Rhodium in einem Gewichtsanteil von 48 bis 52 Gew.-% und Platin einen Gewichtsanteil von 52 bis 48 Gew.-% aufweist.Ideal-white, tarnish-resistant precious metal jewelery alloy according to one of the preceding claims, characterized in that the jewelery alloy rhodium in a weight fraction of 48 to 52 wt .-% and platinum has a weight fraction of 52 to 48 wt .-%. Ideal-weiße, anlaufbeständige Edelmetall-Schmucklegierung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Schmucklegierung ungefähr 50 Gew.-% Rhodium und ungefähr 50 Gew.-% Platin aufweist.Ideal-white, tarnish-resistant precious metal jewelery alloy according to one of the preceding claims, characterized in that the Jewelry alloy has about 50 wt .-% rhodium and about 50 wt .-% platinum. Ideal-weiße, anlaufbeständige Edelmetall-Schmucklegierung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Schmucklegierung Ruthenium, Iridium und/oder Gold in einem Gewichtsanteil bis zusammen 20 Gew.-% aufweist, wobei Platin durch Ruthenium, Iridium und/oder Gold ersetzt und sich die Gewichtsanteile von Rhodium, Platin und den vorgenannten Beimischungen im Wesentlichen zu 100 % ergänzen.Ideal-white, tarnish-resistant precious metal jewelery alloy according to one of the preceding claims, characterized in that the jewelery alloy has ruthenium, iridium and / or gold in a weight fraction of up to 20 wt .-%, wherein platinum replaced by ruthenium, iridium and / or gold and the proportions by weight of rhodium, platinum and the aforementioned admixtures add up to substantially 100%. Ideal-weiße, anlaufbeständige Edelmetall-Schmucklegierung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Schmucklegierung Palladium in einem Gewichtsanteil bis zu 30 Gew.-% aufweist, wobei Platin durch Palladium ersetzt ist.Ideal-white, tarnish-resistant precious metal jewelery alloy according to one of the preceding claims, characterized in that the jewelery alloy has palladium in a weight fraction of up to 30 wt .-%, wherein platinum is replaced by palladium. Verwendung einer Ideal-weiße, anlaufbeständigen Edelmetall-Schmucklegierung nach einem der Ansprüche 1 bis 8 zur Herstellung von Uhren, Schmuck, Juwelierartikeln und/oder Schreibgeräten.Use of an ideal white, tarnish-resistant precious metal jewelery alloy according to one of claims 1 to 8 for the production of watches, jewelery, jewelery articles and / or writing implements. Schmuckstück wie Schmuck, Uhr, Juwelierware, Schreibgerät, dadurch gekennzeichnet, dass das Schmuckstück aus einer anlaufbeständigen Legierung nach einem der Ansprüche 1 bis 8 hergestellt ist.Jewelery such as jewelry, clock, jewelry, writing instrument, characterized in that the piece of jewelry is made of a tarnish-resistant alloy according to one of claims 1 to 8. Verfahren zur Herstellung eines Schmuckstücks, wie Schmuck, einer Uhr, einem Juwelierartikel oder einem Schreibgerät, dadurch gekennzeichnet, dass der Schmuck aus einer Edelmetall-Schmucklegierung nach einem der Ansprüche 1 bis 8 unter Verwendung eines Wachsausschmelzverfahrens hergestellt wird.A method of manufacturing a jewelry such as jewelry, a watch, a jewelery or a writing instrument, characterized in that the jewelry is made of a precious metal jewelry alloy according to any one of claims 1 to 8 using a lost wax process. Schmuckstück wie Schmuck, Uhr, Juwelierware, Schreibgerät, dadurch gekennzeichnet, dass das Schmuckstück aus einer anlaufbeständigen Legierung nach einem der Ansprüche 1 bis 8 hergestellt ist.Jewelery such as jewelry, clock, jewelry, writing instrument, characterized in that the piece of jewelry is made of a tarnish-resistant alloy according to one of claims 1 to 8.
EP11005688.4A 2010-07-12 2011-07-12 Jewellery made from perfectly white, tarnish-proof noble metal alloy Not-in-force EP2420583B1 (en)

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DE201010026930 DE102010026930A1 (en) 2010-07-12 2010-07-12 Ideally white precious metal-jewelry alloy, useful for preparing clocks, jewelry or its articles and/or writing instruments, comprises specified amount of rhodium and platinum
DE201020010147 DE202010010147U1 (en) 2010-07-12 2010-07-12 Ideal white, tarnish-resistant precious metal jewelry alloy

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WO2015120978A1 (en) 2014-02-11 2015-08-20 C. Hafner Gmbh + Co. Kg Precious metal alloy for use in the jewellery and watchmaking industry
EP3020835A1 (en) 2014-11-17 2016-05-18 Omega SA Palladium-based alloy
DE202015002358U1 (en) 2015-03-30 2016-07-01 C. Hafner Gmbh + Co. Kg Precious metal alloy for use in the jewelry and watch industry
DE102015003996A1 (en) 2015-03-30 2016-10-06 C. Hafner Gmbh + Co. Kg Precious metal alloy for use in the jewelry and watch industry

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DE102014001718A1 (en) * 2014-02-11 2015-08-13 C. Hafner Gmbh + Co. Kg Precious metal alloy, in particular for use in the jewelery and watch industry
WO2015120978A1 (en) 2014-02-11 2015-08-20 C. Hafner Gmbh + Co. Kg Precious metal alloy for use in the jewellery and watchmaking industry
US10119177B2 (en) 2014-02-11 2018-11-06 C. Hafner GmbH & Co. KG Precious metal alloy for use in the jewelry and watch industry
EP3020835A1 (en) 2014-11-17 2016-05-18 Omega SA Palladium-based alloy
CN105603241A (en) * 2014-11-17 2016-05-25 奥米加股份有限公司 Palladium-based alloy
CN105603241B (en) * 2014-11-17 2018-08-10 奥米加股份有限公司 Alloy based on palladium
CN108728684A (en) * 2014-11-17 2018-11-02 奥米加股份有限公司 Alloy based on palladium
CN108728684B (en) * 2014-11-17 2020-08-04 奥米加股份有限公司 Palladium-based alloys
DE202015002358U1 (en) 2015-03-30 2016-07-01 C. Hafner Gmbh + Co. Kg Precious metal alloy for use in the jewelry and watch industry
DE102015003996A1 (en) 2015-03-30 2016-10-06 C. Hafner Gmbh + Co. Kg Precious metal alloy for use in the jewelry and watch industry
DE102015003996B4 (en) * 2015-03-30 2019-10-31 C. Hafner Gmbh + Co. Kg Precious metal alloy for use in the jewelry and watch industry

Also Published As

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EP2420583A8 (en) 2012-05-16
EP2420583B1 (en) 2016-11-02
EP2420583A3 (en) 2012-07-04
EP3135781A1 (en) 2017-03-01

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