US20020164264A1 - Platinum-iron alloy, especially for jewelry - Google Patents
Platinum-iron alloy, especially for jewelry Download PDFInfo
- Publication number
- US20020164264A1 US20020164264A1 US10/135,170 US13517002A US2002164264A1 US 20020164264 A1 US20020164264 A1 US 20020164264A1 US 13517002 A US13517002 A US 13517002A US 2002164264 A1 US2002164264 A1 US 2002164264A1
- Authority
- US
- United States
- 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.)
- Abandoned
Links
- 229910000640 Fe alloy Inorganic materials 0.000 title abstract description 3
- CMHKGULXIWIGBU-UHFFFAOYSA-N [Fe].[Pt] Chemical compound [Fe].[Pt] CMHKGULXIWIGBU-UHFFFAOYSA-N 0.000 title abstract description 3
- 229910052742 iron Inorganic materials 0.000 claims abstract description 14
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 11
- 229910052707 ruthenium Inorganic materials 0.000 claims abstract description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 18
- 239000000956 alloy Substances 0.000 claims description 18
- 229910052741 iridium Inorganic materials 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 16
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 15
- 239000010949 copper Substances 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000005275 alloying Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 229910001260 Pt alloy Inorganic materials 0.000 description 2
- 229910018879 Pt—Pd Inorganic materials 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052703 rhodium Inorganic materials 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 235000010585 Ammi visnaga Nutrition 0.000 description 1
- 244000153158 Ammi visnaga Species 0.000 description 1
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- 229910001252 Pd alloy Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- IUNUQZUNCWXDMP-UHFFFAOYSA-N copper iron platinum Chemical compound [Fe][Pt][Cu] IUNUQZUNCWXDMP-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- -1 fine gold Chemical compound 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000010437 gem Substances 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000005494 tarnishing Methods 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 239000010938 white gold Substances 0.000 description 1
- 229910000832 white gold Inorganic materials 0.000 description 1
- 239000010930 yellow gold Substances 0.000 description 1
- 229910001097 yellow gold Inorganic materials 0.000 description 1
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 concerns platinum—iron alloys with an iron content of 2-4 wt. %, which are suitable especially for the fabrication of jewelry.
- platinum and palladium alloys can be hardened with elements such as Fe, Co, B, or Si by a special alloying method, in which intermetallic phases are formed (U.S. Pat. No. 5,518,556, col. 1, lines 24-30). Hardness values of 300 kp/mm 2 are achieved.
- JP 61[1986]-076,633 A1 describes alloys from which gemmy accessories, i.e., products that resemble gems, are fabricated, which have an especially durable luster after facets have been ground.
- the alloys are produced by alloying 0.1-5 wt. % Ru and 2-15% Fe, Ni, and/or Co with Pt—Pd alloys.
- JP 3[1991]-100,159 describes darkened Pt alloys: 3-20% of one or more of the metals Cu, Fe, Co, and Ti are alloyed with platinum. The surface is darkened by heat treatment in an oxidizing atmosphere and then cooling.
- alloys containing 95-96% Pt, 2-3% Fe, and 2-3% Ru and/or Ir are extremely well suited for the fabrication of jewelry due to their hardness, workability and resistance to corrosion.
- the alloys are usually cast from melts under a shielding gas and then shaped. After shaping, they may be subjected to a heat treatment, possibly under a shielding gas, to improve their mechanical properties.
- a relatively large portion of jewelry platinum is used in wedding bands, which are produced by sawing blanks from tubes and then further working the blanks by suitable measures, such as milling, drawing, forging, and polishing.
- alloys are suitable for articles of jewelry in the broader sense, including jewelry worn on the body or on clothing, such as rings, bangles, and stickpins, as well as such articles as wristwatches, pocket watches, toothpicks, and status-symbol items, such as ballpoint pens, letter openers, pocketknife handles, and the like.
Landscapes
- 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
Platinum—iron alloys that contain 95-96 wt % Pt, 2-3 wt % Fe, and 20-3 wt % Ru and/or Ir, and are suitable especially for the fabrication of jewelry.
Description
- The invention concerns platinum—iron alloys with an iron content of 2-4 wt. %, which are suitable especially for the fabrication of jewelry.
- Pure platinum, like fine gold, is relatively soft and, also like gold, is used primarily to produce alloys for articles of jewelry. The platinum content of these kinds of alloys is usually 950/1,000. Typical alloying components are Ru, Cu, and occasionally Rh and Ir. These elements are relatively expensive (Ru, Ir, Rh) or have little effect on the strength of the alloy (Cu and Ir). Nickel is no longer used for this purpose due to the risk of allergic reactions.
- Therefore, in the jewelry sector, there is a demand for alloys that are sufficiently strong, easy to work, resistant to corrosion and physiologically unobjectionable, and that do not add significant additional cost beyond the price of platinum.
- It is well known that platinum and palladium alloys can be hardened with elements such as Fe, Co, B, or Si by a special alloying method, in which intermetallic phases are formed (U.S. Pat. No. 5,518,556, col. 1, lines 24-30). Hardness values of 300 kp/mm 2 are achieved.
- Platinum—iron—copper alloys that contain 84-96% Pt, 1-10% Fe, and 1-10% Cu have also been developed (JP Kokai No. 61 [1986]-281,843). Cu is added because it forms an intermetallic compound with Pt. A similar system with Pt—Ga—Fe has been proposed (JP Kokai No. 61[1986]-272,333). Furthermore, Pt—Co alloys have been described, which may also contain 0.5-5% of the elements W, Mo, Ti, V, and/or iron (JP Kokai No. 61[1986]-034,139). Pt—Pd alloys with an Re component and up to 3% Ni, Fe, or Co are also known (JP Kokai No.2[1990]-043,332).
- In addition, inexpensive white gold and yellow gold alloys with a low gold content are known, which may contain up to 3% iron. A higher iron content causes tarnishing of the material (U.S. Pat. Nos. 4,396,578 and 4,446,102).
- JP 61[1986]-076,633 A1 describes alloys from which gemmy accessories, i.e., products that resemble gems, are fabricated, which have an especially durable luster after facets have been ground. The alloys are produced by alloying 0.1-5 wt. % Ru and 2-15% Fe, Ni, and/or Co with Pt—Pd alloys.
- JP 3[1991]-100,159 describes darkened Pt alloys: 3-20% of one or more of the metals Cu, Fe, Co, and Ti are alloyed with platinum. The surface is darkened by heat treatment in an oxidizing atmosphere and then cooling.
- According to the present invention, alloys containing 95-96% Pt, 2-3% Fe, and 2-3% Ru and/or Ir are extremely well suited for the fabrication of jewelry due to their hardness, workability and resistance to corrosion.
- The alloys are usually cast from melts under a shielding gas and then shaped. After shaping, they may be subjected to a heat treatment, possibly under a shielding gas, to improve their mechanical properties.
- A relatively large portion of jewelry platinum is used in wedding bands, which are produced by sawing blanks from tubes and then further working the blanks by suitable measures, such as milling, drawing, forging, and polishing.
- Of course, the alloys are suitable for articles of jewelry in the broader sense, including jewelry worn on the body or on clothing, such as rings, bangles, and stickpins, as well as such articles as wristwatches, pocket watches, toothpicks, and status-symbol items, such as ballpoint pens, letter openers, pocketknife handles, and the like.
- The following example explains the invention in greater detail. The percentages in the example as well as those mentioned previously are percentages by weight.
- 5 kg of PtFe3.0Ru1.8 were melted inductively in an Ar atmosphere, cast in a Cu ingot mold to form a bar with a cross section of 45×45 mm, forged into a cylindrical bar of diameter (Ø) 36 mm, and turned to form a hollow cylinder (outside Ø32 mm, inside Ø22 mm, length 100 mm). A tube (outside Ø20 mm, wall thickness 1.5 mm) was produced from the alloy by conventional tube drawing. The material could be readily worked in every way.
- The invention is not limited by the embodiments described above which are presented as examples only but can be modified in various ways within the scope of protection defined by the appended patent claims.
Claims (3)
1. An alloy comprising: 95-96 wt % Pt; 2-3 wt % Fe, and 2-3 wt % of at least one of Ru and Ir.
2. An alloy as defined in claim 1 , wherein the alloy has of 95.2 wt % Pt, 3 wt % Fe, and 1.8 wt % Ru.
3. An article of jewelry comprising an alloy of 95-96 wt % Pt; 2-3 wt % Fe, and 2-3 wt % of at least one of Ru and Ir.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10121598A DE10121598A1 (en) | 2001-05-03 | 2001-05-03 | Platinum-iron alloy, especially for jewelry |
| DE10121598.3 | 2001-05-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US20020164264A1 true US20020164264A1 (en) | 2002-11-07 |
Family
ID=7683544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US10/135,170 Abandoned US20020164264A1 (en) | 2001-05-03 | 2002-04-30 | Platinum-iron alloy, especially for jewelry |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20020164264A1 (en) |
| EP (1) | EP1254964A1 (en) |
| DE (1) | DE10121598A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2528292C1 (en) * | 2013-09-05 | 2014-09-10 | Открытое акционерное общество "Красноярский завод цветных металлов имени В.Н. Гулидова" (ОАО "Красцветмет") | Jewellery titanium 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 |
| AU2011318682B2 (en) * | 2010-10-19 | 2017-06-29 | Hugh Joseph Gillbanks | Metal alloy |
| GB2627027A (en) * | 2023-02-10 | 2024-08-14 | Alloyed Ltd | A nickel-free platinum alloy composition |
| WO2024165850A1 (en) * | 2023-02-10 | 2024-08-15 | Alloyed Limited | A nickel-free platinum alloy composition |
Families Citing this family (3)
| 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 |
| ES2581862T3 (en) | 2012-04-13 | 2016-09-07 | C. Hafner Gmbh + Co. Kg | Platinum alloy and an ornament object produced from this 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 |
Family Cites Families (7)
| 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 ornaments |
| JPH0243332A (en) * | 1988-08-02 | 1990-02-13 | Tokuriki Honten Co Ltd | Platinum alloy for ornament |
| 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 |
-
2001
- 2001-05-03 DE DE10121598A patent/DE10121598A1/en not_active Withdrawn
-
2002
- 2002-04-13 EP EP02008434A patent/EP1254964A1/en not_active Withdrawn
- 2002-04-30 US US10/135,170 patent/US20020164264A1/en not_active Abandoned
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2011318682B2 (en) * | 2010-10-19 | 2017-06-29 | Hugh Joseph Gillbanks | Metal 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 |
| 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 |
| GB2627027A (en) * | 2023-02-10 | 2024-08-14 | Alloyed Ltd | A nickel-free platinum alloy composition |
| WO2024165850A1 (en) * | 2023-02-10 | 2024-08-15 | Alloyed Limited | A nickel-free platinum alloy composition |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1254964A1 (en) | 2002-11-06 |
| DE10121598A1 (en) | 2003-01-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AS | Assignment |
Owner name: W. C. HERAEUS GMBH & CO. KG, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BAAKE, REINHARD;LUPTON, DAVID;MANHARDT, HARALD;REEL/FRAME:012858/0536;SIGNING DATES FROM 20020415 TO 20020419 |
|
| STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |