EP1254964A1 - Platinum - iron alloy, especially for jewelry - Google Patents

Platinum - iron alloy, especially for jewelry Download PDF

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Publication number
EP1254964A1
EP1254964A1 EP02008434A EP02008434A EP1254964A1 EP 1254964 A1 EP1254964 A1 EP 1254964A1 EP 02008434 A EP02008434 A EP 02008434A EP 02008434 A EP02008434 A EP 02008434A EP 1254964 A1 EP1254964 A1 EP 1254964A1
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EP
European Patent Office
Prior art keywords
platinum
jewelry
alloys
iron alloy
iron
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.)
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Application number
EP02008434A
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German (de)
French (fr)
Inventor
Reinhard Baake
David Francis Dr. Lupton
Harald Manhardt
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.)
WC Heraus GmbH and Co KG
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WC Heraus GmbH and Co KG
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Publication date
Application filed by WC Heraus GmbH and Co KG filed Critical WC Heraus GmbH and Co KG
Publication of EP1254964A1 publication Critical patent/EP1254964A1/en
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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
    • C22C5/04—Alloys based on a platinum group metal

Definitions

  • the invention relates to platinum-iron alloys with 2 - 4 wt .-% iron content, which are particularly suitable for the production of jewelry.
  • Platinum like fine gold, is relatively soft and, like gold, is used primarily as an alloy processed into jewelry.
  • the platinum content of such alloys is usually 950/1000.
  • Typical alloy components are Ru, Cu and occasionally Rh and Ir. This Elements are either relatively expensive (Ru, Ir, Rh) or have little impact on strength the alloy (Cu and Ir). Nickel is no longer available due to the risk of allergies used.
  • Platinum-iron-copper alloys have also been developed, which are 84-96% Pt, 1-10% Fe and Can contain 1 - 10% Cu (JP Kokai 61-281843). Cu is added because it is an intermetallic Connection with Pt.
  • a similar system has been proposed with Pt-Ga-Fe (JP Kokai 61-272333).
  • Pt-Co alloys have also been described that additionally 0.5 - 5% of elements W, Mo, Ti, V and / or iron can contain (JP Kokai 61-034139).
  • Pt-Pd alloys with Re content are known which contain up to 3% Ni, Fe or Co (JP Kokai 02-043332).
  • inexpensive white and yellow gold alloys with a low gold content can contain up to 3% iron.
  • a higher iron content leads to tarnishing of the material (U.S. 4,396,578 and 4,446,102).
  • JP 61-076633 A1 describes alloys from which "gemmy accessories", i.e. gem-like Products that are manufactured because of their hardness have a particularly sustainable sheen after the brilliant cut.
  • the alloys are made by alloying 0.1-5% by weight Ru, 2-15% Fe, Ni and / or Co made to Pt-Pd alloys.
  • JP 03-100159 A1 describes blackened Pt alloys: 3-20% of one or more of the Metals Cu, Fe, Co and Ti are alloyed to platinum. By heat treatment on oxidizing Atmosphere and cooling the surface is blackened.
  • the alloys are usually cast from the corresponding melts under protective gas and then shaped. After molding, thermal treatment - if necessary again under protective gas - to improve the mechanical properties.
  • alloys are suitable for jewelry items in the broader sense are. This includes jewelry worn on the body or clothing such as rings, bracelets and tie pins, but also everyday items such as wrist and pocket watches, toothpicks, including items that can represent status symbols, such as pens, Letter opener, handle scales for pocket knives etc.

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

Abstract

Es werden Platin-Eisen-Legierungen mit vorzugsweise 3 Gew.-% Eisenanteil beschrieben, die sich besonders für die Herstellung von Schmuck eignen.Platinum-iron alloys with preferably 3% by weight iron content are described which are particularly suitable for the production of jewelry.

Description

Die Erfindung betrifft Platin-Eisen-Legierungen mit 2 - 4 Gew.-% Eisenanteil, die sich besonders für die Herstellung von Schmuck eignen.The invention relates to platinum-iron alloys with 2 - 4 wt .-% iron content, which are particularly suitable for the production of jewelry.

Reines Platin ist wie Feingold relativ weich und wird - wie Gold auch - vor allem als Legierung zu Schmuckgegenständen verarbeitet. Der Platingehalt solcher Legierungen beträgt gewöhnlich 950/1000. Typische Legierungsbestandteile sind dabei Ru, Cu und gelegentlich Rh und Ir. Diese Elemente sind entweder relativ teuer (Ru, Ir, Rh) oder sie haben wenig Einfluss auf die Festigkeit der Legierung (Cu und Ir). Nickel wird wegen der Allergiegefahr heutzutage nicht mehr eingesetzt.Pure platinum, like fine gold, is relatively soft and, like gold, is used primarily as an alloy processed into jewelry. The platinum content of such alloys is usually 950/1000. Typical alloy components are Ru, Cu and occasionally Rh and Ir. This Elements are either relatively expensive (Ru, Ir, Rh) or have little impact on strength the alloy (Cu and Ir). Nickel is no longer available due to the risk of allergies used.

Es besteht im Schmuckbereich daher ein Bedarf an Legierungen, die genügend fest, einfach zu verarbeiten, korrosionsbeständig und physiologisch unbedenklich sind sowie geringe Zusatzkosten zum Platinpreis verursachen.There is therefore a need in the jewelry field for alloys that are sufficiently firm, easy to use processing, corrosion-resistant and physiologically harmless as well as low additional costs cause at the platinum price.

Es ist bekannt, Platin und Palladiumlegierungen mit Elementen wie Fe, Co, B oder Si durch eine spezielle Legierungsmethode zu härten, bei der intermetallische Phasen entstehen (US 5,518,556, Sp. 1, Z. 24 - 30). Man erreicht Härtewerte von 300 kp/mm2.It is known to harden platinum and palladium alloys with elements such as Fe, Co, B or Si using a special alloying method in which intermetallic phases are formed (US Pat. No. 5,518,556, column 1, lines 24-30). Hardness values of 300 kp / mm 2 are achieved .

Man hat auch Platin-Eisen-Kupfer-Legierungen entwickelt, die 84 - 96 % Pt, 1- 10 % Fe und 1 - 10 % Cu enthalten können (JP Kokai 61-281843). Cu wird zugesetzt, weil es eine intermetallische Verbindung mit Pt eingeht. Ein ähnliches System wurde mit Pt-Ga-Fe vorgeschlagen (JP Kokai 61-272333). Ferner wurden Pt-Co-Legierungen beschrieben, die zusätzlich 0,5 - 5% der Elemente W, Mo, Ti, V und/oder Eisen enthalten können (JP Kokai 61-034139). Außerdem sind Pt-Pd-Legierungen mit Re-Anteil bekannt, die bis zu 3 % Ni, Fe oder Co enthalten (JP Kokai 02-043332). Platinum-iron-copper alloys have also been developed, which are 84-96% Pt, 1-10% Fe and Can contain 1 - 10% Cu (JP Kokai 61-281843). Cu is added because it is an intermetallic Connection with Pt. A similar system has been proposed with Pt-Ga-Fe (JP Kokai 61-272333). Pt-Co alloys have also been described that additionally 0.5 - 5% of elements W, Mo, Ti, V and / or iron can contain (JP Kokai 61-034139). Moreover Pt-Pd alloys with Re content are known which contain up to 3% Ni, Fe or Co (JP Kokai 02-043332).

Ferner sind preisgünstige Weiß- und Gelbgoldlegierungen mit geringem Goldanteil bekannt, die bis zu 3 % Eisen enthalten können. Ein höherer Eisenanteil führt zum Anlaufen des Materials (US 4,396,578 und 4,446,102).In addition, inexpensive white and yellow gold alloys with a low gold content are known can contain up to 3% iron. A higher iron content leads to tarnishing of the material (U.S. 4,396,578 and 4,446,102).

JP 61-076633 A1 beschreibt Legierungen, aus denen "gemmy accessories", d.h. edelsteinähnliche Erzeugnisse, gefertigt werden, die infolge ihrer Härte einen besonders nachhaltigen Glanz nach dem Brillantschliff haben. Die Legierungen werden durch Zulegieren von 0.1-5 Gew.% Ru, 2-15% Fe, Ni und/oder Co zu Pt-Pd-Legierungen hergestellt.JP 61-076633 A1 describes alloys from which "gemmy accessories", i.e. gem-like Products that are manufactured because of their hardness have a particularly sustainable sheen after the brilliant cut. The alloys are made by alloying 0.1-5% by weight Ru, 2-15% Fe, Ni and / or Co made to Pt-Pd alloys.

JP 03-100159 A1 beschreibt geschwärzte Pt-Legierungen: 3-20% eines oder mehrerer der Metalle Cu, Fe, Co und Ti werden zu Platin legiert. Durch Wärmebehandlung an oxidierender Atmosphäre und Abkühlen wird die Oberfläche geschwärzt.JP 03-100159 A1 describes blackened Pt alloys: 3-20% of one or more of the Metals Cu, Fe, Co and Ti are alloyed to platinum. By heat treatment on oxidizing Atmosphere and cooling the surface is blackened.

Es wurde nun gefunden, dass sich Legierungen mit 95 - 96 % Pt, 2 - 3 % Fe und 2 - 3 % Ru oder/und Ir hinsichtlich Härte, Verarbeitungsfähigkeit und Korrosionsbeständigkeit ausgezeichnet für die Schmuckherstellung eignen.It has now been found that alloys with 95-96% Pt, 2-3% Fe and 2-3% Ru or / and Ir excellent in terms of hardness, processability and corrosion resistance suitable for jewelry making.

Die Legierungen werden gewöhnlich aus den entsprechenden Schmelzen unter Schutzgas gegossen und anschließend geformt. Nach dem Formen kann eine thermische Behandlung - ggf. wieder unter Schutzgas - zur Verbesserung der mechanischen Eigenschaften erfolgen.The alloys are usually cast from the corresponding melts under protective gas and then shaped. After molding, thermal treatment - if necessary again under protective gas - to improve the mechanical properties.

Ein relativ großer Anteil des Schmuckplatins geht in Eheringe. Für diese werden Rohlinge aus Rohren gesägt und dann weiter mit geeigneten Maßnahmen wie Fräsen, Ziehen, Schmieden und Polieren bearbeitetA relatively large proportion of the jewelry platinum goes into wedding rings. Blanks are made for these Sawed pipes and then continue with suitable measures such as milling, drawing, forging and polished

Es versteht sich, dass die Legierungen für Schmuckgegenstände im weiteren Sinn geeignet sind. Dazu zählt am Körper oder Kleidung getragener Schmuck wie Ringe, Armreifen und Krawattennadeln, aber auch Gebrauchsgegenstände wie Armband- und Taschenuhren, Zahnstocher, darunter auch Gegenstände, die Statussymbole darstellen können, wie Kugelschreiber, Brieföffner, Griffschalen für Taschenmesser u.ä.It is understood that the alloys are suitable for jewelry items in the broader sense are. This includes jewelry worn on the body or clothing such as rings, bracelets and tie pins, but also everyday items such as wrist and pocket watches, toothpicks, including items that can represent status symbols, such as pens, Letter opener, handle scales for pocket knives etc.

Die folgenden Beispiele erläutern die Erfindung näher. Die Prozentangaben beziehen sich wie auch in der übrigen Beschreibung auf das Gewicht. The following examples illustrate the invention. The percentages relate to how also in the rest of the description on the weight.

Ausführungsbeispielembodiment I. Herstellung und Formgebung einer PtFe3,0Ru1,8-LegierungI. Manufacture and shaping of a PtFe3.0Ru1.8 alloy

5 kg PtFe3,0Ru1,8 wurde induktiv unter Ar erschmolzen, in eine Cu-Kokille zu einem Barren mit Querschnitt 45 x 45 mm abgegossen, zu einem zylindrischen Stab mit Durchmesser (Ø) 36 mm geschmiedet und zu einem Hohlzylinder (Außen-Ø 32 mm, Innen-Ø 22 mm, Länge 100mm) gedreht. Durch konventionelles Rohrziehen wurde ein Rohr (Außen-Ø 20 mm, Wanddicke 1,5 mm) aus der Legierung hergestellt. In jeder Hinsicht ließ sich das Material gut verarbeiten.5 kg of PtFe3.0Ru1.8 was melted inductively under Ar, into a copper mold with an ingot Cross-section 45 x 45 mm cast into a cylindrical rod with a diameter (Ø) 36 mm forged and into a hollow cylinder (outer Ø 32 mm, inner Ø 22 mm, length 100mm) turned. A tube (outer Ø 20 mm, wall thickness 1.5 mm) made of the alloy. The material was easy to work with in every respect.

Claims (3)

Legierungen bestehend aus 95 - 96 % Pt, 2 - 3 % Fe und 2 - 3 % Ru oder/und Ir.Alloys consisting of 95 - 96% Pt, 2 - 3% Fe and 2 - 3% Ru or / and Ir. Legierung bestehend aus 95,2% Pt, 3% Fe und 1,8% Ru.Alloy consisting of 95.2% Pt, 3% Fe and 1.8% Ru. Schmuckgegenstand aus einer der Legierungen nach Anspruch 1 oder 2.Jewelry article made of one of the alloys according to claim 1 or 2.
EP02008434A 2001-05-03 2002-04-13 Platinum - iron alloy, especially for jewelry Withdrawn EP1254964A1 (en)

Applications Claiming Priority (2)

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DE10121598A DE10121598A1 (en) 2001-05-03 2001-05-03 Platinum-iron alloy, especially for jewelry
DE10121598 2001-05-03

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EP (1) EP1254964A1 (en)
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012003711U1 (en) 2012-04-13 2012-06-12 C. Hafner Gmbh + Co. Kg Platinum alloy and a jewelry made of this platinum alloy
EP2650394A1 (en) 2012-04-13 2013-10-16 C. Hafner GmbH + Co. KG Platinum alloy and jewellery object produced using said platinum alloy
DE102012007299A1 (en) 2012-04-13 2013-10-17 C. Hafner Gmbh + Co. Kg Platinum alloy, useful for the manufacture of ornamental object, preferably jewelry, piece of jewelry, watch cases and objects of precious metal or precious-metal layer, comprises platinum and gold, and indium

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2011318682B2 (en) * 2010-10-19 2017-06-29 Hugh Joseph Gillbanks Metal alloy
RU2528293C1 (en) * 2013-09-05 2014-09-10 Открытое акционерное общество "Красноярский завод цветных металлов имени В.Н. Гулидова" (ОАО "Красцветмет") Platinum-based jewellery alloy
RU2528292C1 (en) * 2013-09-05 2014-09-10 Открытое акционерное общество "Красноярский завод цветных металлов имени В.Н. Гулидова" (ОАО "Красцветмет") Jewellery titanium alloy

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB546897A (en) * 1941-03-22 1942-08-04 Mond Nickel Co Ltd Improvements in platinum alloys
JPS6176634A (en) * 1984-09-21 1986-04-19 Tokuriki Honten Co Ltd Platinum alloy
JPS6176633A (en) * 1984-09-21 1986-04-19 Tokuriki Honten Co Ltd Platinum alloy for gemmy accessory
JPS61281843A (en) * 1985-06-07 1986-12-12 Tanaka Kikinzoku Kogyo Kk Platinum alloy for ornament
JPH0243332A (en) * 1988-08-02 1990-02-13 Tokuriki Honten Co Ltd Platinum alloy for ornament

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03100159A (en) * 1989-09-12 1991-04-25 Agency Of Ind Science & Technol Platinum alloy to be brightly blackened and method for blackening the same
JPH06176634A (en) * 1992-12-02 1994-06-24 Yazaki Corp Manufacture of shield-attached tape-like electric wire

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB546897A (en) * 1941-03-22 1942-08-04 Mond Nickel Co Ltd Improvements in platinum alloys
JPS6176634A (en) * 1984-09-21 1986-04-19 Tokuriki Honten Co Ltd Platinum alloy
JPS6176633A (en) * 1984-09-21 1986-04-19 Tokuriki Honten Co Ltd Platinum alloy for gemmy accessory
JPS61281843A (en) * 1985-06-07 1986-12-12 Tanaka Kikinzoku Kogyo Kk Platinum alloy for ornament
JPH0243332A (en) * 1988-08-02 1990-02-13 Tokuriki Honten Co Ltd Platinum alloy for ornament

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 010, no. 245 (C - 368) 22 August 1986 (1986-08-22) *
PATENT ABSTRACTS OF JAPAN vol. 011, no. 141 (C - 421) 8 May 1987 (1987-05-08) *
PATENT ABSTRACTS OF JAPAN vol. 014, no. 202 (C - 0713) 25 April 1990 (1990-04-25) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012003711U1 (en) 2012-04-13 2012-06-12 C. Hafner Gmbh + Co. Kg Platinum alloy and a jewelry made of this platinum alloy
EP2650394A1 (en) 2012-04-13 2013-10-16 C. Hafner GmbH + Co. KG Platinum alloy and jewellery object produced using said platinum alloy
DE102012007299A1 (en) 2012-04-13 2013-10-17 C. Hafner Gmbh + Co. Kg Platinum alloy, useful for the manufacture of ornamental object, preferably jewelry, piece of jewelry, watch cases and objects of precious metal or precious-metal layer, comprises platinum and gold, and indium

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Publication number Publication date
DE10121598A1 (en) 2003-01-23
US20020164264A1 (en) 2002-11-07

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