EP2099941B1 - Alliage pour bijoux contenant du platine - Google Patents

Alliage pour bijoux contenant du platine Download PDF

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Publication number
EP2099941B1
EP2099941B1 EP08846709A EP08846709A EP2099941B1 EP 2099941 B1 EP2099941 B1 EP 2099941B1 EP 08846709 A EP08846709 A EP 08846709A EP 08846709 A EP08846709 A EP 08846709A EP 2099941 B1 EP2099941 B1 EP 2099941B1
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EP
European Patent Office
Prior art keywords
weight
platinum
ruthenium
alloy
platinum alloy
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.)
Active
Application number
EP08846709A
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German (de)
English (en)
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EP2099941A1 (fr
Inventor
Georg Steiner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Heimerle and Meule GmbH
Original Assignee
Heimerle and Meule GmbH
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Filing date
Publication date
Application filed by Heimerle and Meule GmbH filed Critical Heimerle and Meule GmbH
Publication of EP2099941A1 publication Critical patent/EP2099941A1/fr
Application granted granted Critical
Publication of EP2099941B1 publication Critical patent/EP2099941B1/fr
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Classifications

    • 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 new platinum jewelery alloys as well as semi-finished products produced with the aid of these alloys.
  • platinum Because of its characteristic gray-white color, platinum has long been used in jewelry production and thus also in the jewelry industry. However, like all precious metals in the elemental state, platinum is comparatively soft, so that although it can be processed easily, it does not have the necessary strength and durability for everyday use. This is why platinum is usually alloyed with other metals, especially in the jewelery sector, in order to increase its strength. Such platinum alloys have therefore gained in recent years, an increasingly important in the jewelry industry.
  • Dual-material systems of platinum and copper are also known, for example Pt960 / Cu40. Although such alloys are easily machinable and also easily cold formable, they are comparatively soft and not suitable for jewelery purposes for every product.
  • platinum alloys used for ornamentation are based on the addition of iridium to platinum, with systems such as Pt800 / Ir200 and Pt950 / Ir50 being known, for example. Even such systems are relatively hard and therefore comparatively difficult without cutting and machinable.
  • the binary systems platinum / palladium or platinum / gold should also be mentioned, whereby systems such as Pt900 / Pd100 or Pt900 / Au100 and Pt950 / Pd50 or Pt950 / Au50 are also known here.
  • the palladium alloys are comparatively soft with the already mentioned disadvantages of such a soft material.
  • the original gray-white color of the platinum is shifted by the addition of palladium in the direction of gray, which is often not desirable for jewelry purposes. An undesirable color shift can also occur due to the gold addition in the platinum-gold alloys.
  • the high price of gold currently speaks against the use of gold as an alloying additive.
  • the JP 61186439 A discloses a platinum jewelery alloy consisting of 84% by weight to 96% by weight of platinum, 1% by weight to 15% by weight of palladium, 0.5% by weight to 10% by weight of copper and 0.1% by weight % to 7% by weight of molybdenum and / or tungsten. Accordingly, this alloy necessarily contains palladium, the use of which can lead to the abovementioned disadvantages (reduced hardness of the alloy, shift of the color of the alloy in the direction of gray).
  • the desired alloy on the one hand a high hardness and thus have a high resistance to abrasion. Also a good polishability with mechanical aids is desired.
  • the alloy should be easy to process, ie have good cold workability and should also be easy to machine, for example by turning, milling and the like. This should result in less tool wear.
  • the platinum content in the alloys according to the invention is at least 95% by weight and is preferably between 95.1% by weight and 95.5% by weight.
  • the tungsten content in the alloys according to the invention is preferably between 3.5% by weight and 4.0% by weight, in particular between 3.6% by weight and 3.9% by weight. Within the latter range, tungsten contents between 3.7% by weight and 3.8% by weight are again preferred.
  • the copper content is preferably between 0.5% by weight and 2% by weight, in particular between 0.7% by weight and 1.3% by weight. Within the last-mentioned range, copper contents between 0.9% by weight and 1.1% by weight are of particular advantage here.
  • the content of the elements from the group of ruthenium, rhodium and iridium total contents of at least one of these elements between 0.02% by weight and 0.5% by weight should be emphasized here. Within this range, the respective contents are preferably between 0.03 wt .-% and 0.1 wt .-%, in particular between 0.04 wt .-% and 0.07 wt .-%.
  • ruthenium is preferably used as the element from the group of ruthenium, rhodium and iridium in the alloys according to the invention.
  • the invention comprises a semi-finished product for decorative purposes, which is at least partially, but preferably completely, made of the described alloys according to the invention.
  • these semi-finished products are prefabricated geometric shapes from the corresponding alloy material, which are then further processed manually or industrially to the respective jewelry end products.
  • such semi-finished products are generally for example pipes, rods, rings, sheets, strips, wires and the like.
  • the semifinished products according to the invention are tubular or annular semi-finished products.
  • the resulting alloy melt is cold worked by drawing into a tube to form a fine-grained texture.
  • the color of the obtained alloy corresponds to the desired platinum color, namely gray-white.
  • the resulting tubular semi-finished products can be processed in the usual way artisanal or industrial in conventional jewelry products, the material has sufficient hardness with good cold workability.
  • the material can also be machined very well and is easy to polish. Any kind of setting for gems can be made of the material of the invention or incorporated into this by means of suitable tools.
  • the material is also diamond able.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Adornments (AREA)

Claims (8)

  1. Alliage de platine pour bijouterie, constitué de :
    - 94,0 % en poids à 96,5 % en poids de platine,
    - 2,5 % en poids à 4,5 % en poids de tungstène,
    - 0,5 % en poids à 3,0 % en poids de cuivre et
    - 0,02 % en poids à 2,0 % en poids d'au moins un élément de l'ensemble constitué du ruthénium, du rhodium et de l'iridium.
  2. Alliage de platine pour bijouterie selon la revendication 1, caractérisé en ce que la teneur en platine est ≥ 95 % en poids et de préférence comprise entre 95,1 % en poids et 95,5 % en poids.
  3. Alliage de platine pour bijouterie selon la revendication 1 ou la revendication 2, caractérisé en ce que la teneur en tungstène est comprise entre 3,5 % en poids et 4,0 % en poids, de préférence entre 3,6 % en poids et 3,9 % en poids et en particulier entre 3,7 % en poids et 3,8 % en poids.
  4. Alliage de platine pour bijouterie selon l'une des revendications précédentes, caractérisé en ce que la teneur en cuivre est comprise entre 0,5 % en poids et 2,0 % en poids, de préférence entre 0,7 % en poids et 1,3 % en poids et en particulier entre 0,9 % en poids et 1,1 % en poids.
  5. Alliage de platine pour bijouterie selon l'une des revendications précédentes, caractérisé en ce que la teneur en éléments de l'ensemble constitué du ruthénium, du rhodium et de l'iridium est comprise entre 0,02 % en poids et 0,5 % en poids, de préférence entre 0,03 % en poids et 0,1 % en poids et en particulier entre 0,04 % en poids et 0,07 % en poids.
  6. Alliage de platine pour bijouterie selon l'une des revendications précédentes, caractérisé en ce que l'élément de l'ensemble constitué du ruthénium, du rhodium et de l'iridium est le ruthénium.
  7. Produit semi-fini pour fabrication de bijoux, caractérisé en ce qu'il est réalisé au moins en partie et de préférence entièrement d'un alliage selon l'une des revendications précédentes.
  8. Produit semi-fini selon la revendication 7, caractérisé en ce que le produit fini présente la forme d'un tube ou d'un anneau.
EP08846709A 2007-11-08 2008-11-04 Alliage pour bijoux contenant du platine Active EP2099941B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007054871A DE102007054871A1 (de) 2007-11-08 2007-11-08 Platin-Schmucklegierung
PCT/EP2008/009274 WO2009059736A1 (fr) 2007-11-08 2008-11-04 Alliage pour bijoux contenant du platine

Publications (2)

Publication Number Publication Date
EP2099941A1 EP2099941A1 (fr) 2009-09-16
EP2099941B1 true EP2099941B1 (fr) 2011-01-05

Family

ID=40336511

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08846709A Active EP2099941B1 (fr) 2007-11-08 2008-11-04 Alliage pour bijoux contenant du platine

Country Status (5)

Country Link
EP (1) EP2099941B1 (fr)
AT (1) ATE494398T1 (fr)
DE (3) DE102007054871A1 (fr)
HK (1) HK1130850A1 (fr)
WO (1) WO2009059736A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009013202U1 (de) * 2009-04-07 2009-12-24 Heimerle + Meule Gmbh Platin-Schmucklegierung
CN103725915A (zh) * 2012-10-15 2014-04-16 深圳市星光达珠宝首饰实业有限公司 一种制作首饰的合金材料及其制备方法
DE102019213587A1 (de) * 2019-09-06 2021-03-11 Heimerle + Meule Gmbh Platin-Schmucklegierung

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1152826B (de) * 1957-06-22 1963-08-14 Heraeus Gmbh W C Verwendung einer Platinmetallegierung als Werkstoff fuer Spannbaender in Messinstrumenten
IT1108628B (it) * 1977-02-23 1985-12-09 Johnson Matthey Co Ltd Leghe per gioielli
JPS61186439A (ja) 1985-02-14 1986-08-20 Tanaka Kikinzoku Kogyo Kk 装飾品用白金合金
JPS61281836A (ja) * 1985-06-07 1986-12-12 Tanaka Kikinzoku Kogyo Kk 装飾品用白金合金
JPS61281839A (ja) * 1985-06-07 1986-12-12 Tanaka Kikinzoku Kogyo Kk 装飾品用白金合金
JPS61281840A (ja) * 1985-06-07 1986-12-12 Tanaka Kikinzoku Kogyo Kk 装飾品用白金合金
JPS62130238A (ja) * 1985-11-29 1987-06-12 Citizen Watch Co Ltd 装飾用硬質白金合金
DE3712839C1 (en) * 1987-04-15 1988-04-21 Degussa Use of platinum alloys having spring properties for jewellery pieces
JPH0243331A (ja) * 1988-08-02 1990-02-13 Tokuriki Honten Co Ltd 装飾用白金合金

Also Published As

Publication number Publication date
HK1130850A1 (en) 2010-01-08
ATE494398T1 (de) 2011-01-15
DE502008002203D1 (de) 2011-02-17
DE102007054871A1 (de) 2009-05-20
EP2099941A1 (fr) 2009-09-16
WO2009059736A1 (fr) 2009-05-14
DE202008017584U1 (de) 2010-01-14

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