EP3444364B1 - Alliage à base de platine, son utilisation - Google Patents
Alliage à base de platine, son utilisation Download PDFInfo
- Publication number
- EP3444364B1 EP3444364B1 EP17186552.0A EP17186552A EP3444364B1 EP 3444364 B1 EP3444364 B1 EP 3444364B1 EP 17186552 A EP17186552 A EP 17186552A EP 3444364 B1 EP3444364 B1 EP 3444364B1
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- EP
- European Patent Office
- Prior art keywords
- based alloy
- platinum based
- alloying element
- platinum
- alloy
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- 229910045601 alloy Inorganic materials 0.000 title claims description 126
- 239000000956 alloy Substances 0.000 title claims description 126
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 196
- 229910052697 platinum Inorganic materials 0.000 claims description 100
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 57
- 238000005275 alloying Methods 0.000 claims description 52
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 43
- 239000010949 copper Substances 0.000 claims description 32
- 229910052802 copper Inorganic materials 0.000 claims description 29
- 229910052763 palladium Inorganic materials 0.000 claims description 28
- 239000011572 manganese Substances 0.000 claims description 27
- 229910052742 iron Inorganic materials 0.000 claims description 26
- 229910052748 manganese Inorganic materials 0.000 claims description 24
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 23
- 239000010931 gold Substances 0.000 claims description 23
- 229910052737 gold Inorganic materials 0.000 claims description 22
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 21
- 229910052732 germanium Inorganic materials 0.000 claims description 21
- 239000011651 chromium Substances 0.000 claims description 20
- 239000010948 rhodium Substances 0.000 claims description 20
- 229910052727 yttrium Inorganic materials 0.000 claims description 19
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 18
- 229910052741 iridium Inorganic materials 0.000 claims description 18
- 229910052703 rhodium Inorganic materials 0.000 claims description 18
- 229910052721 tungsten Inorganic materials 0.000 claims description 18
- 229910052782 aluminium Inorganic materials 0.000 claims description 17
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 17
- 229910052804 chromium Inorganic materials 0.000 claims description 16
- 229910052720 vanadium Inorganic materials 0.000 claims description 15
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 15
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims description 14
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 14
- 239000010937 tungsten Substances 0.000 claims description 14
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 13
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 13
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 8
- 239000010437 gem Substances 0.000 claims description 2
- 229910001751 gemstone Inorganic materials 0.000 claims description 2
- 239000010985 leather Substances 0.000 claims description 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims 2
- 230000008018 melting Effects 0.000 description 10
- 238000002844 melting Methods 0.000 description 10
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 4
- 229910052733 gallium Inorganic materials 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 150000003057 platinum Chemical class 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910001260 Pt alloy Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 229910000914 Mn alloy Inorganic materials 0.000 description 1
- -1 Platinum Metals Chemical class 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 229910000960 colored gold Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000004320 controlled atmosphere Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000010939 rose gold Substances 0.000 description 1
- 229910001112 rose gold Inorganic materials 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000010938 white gold Substances 0.000 description 1
- 229910000832 white gold Inorganic materials 0.000 description 1
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
Definitions
- the invention relates to a platinum based alloy comprising platinum and at least three different alloying elements. Due to its properties such as hardness, porosity or grain size, this alloy may be used to manufacture luxury goods.
- metals such as gold or platinum are usually alloyed with one or more elements in order to improve their hardness and their ductility.
- gold is a soft metal, it is usually alloyed with copper, silver or palladium in order to increase its hardness.
- additional elements can also allow the formulation of colored gold. For instance, gold may be alloyed with nickel or palladium so as to afford white gold. Gold may be alloyed with copper so as to afford rose gold.
- platinum may be alloyed with one or more of gallium, copper, cobalt, tungsten, iridium, rhodium, ruthenium...
- gallium, copper, cobalt, tungsten, iridium, rhodium, ruthenium may be alloyed with one or more of gallium, copper, cobalt, tungsten, iridium, rhodium, ruthenium.
- the introduction of specific elements may improve the castability and workability of platinum, as well as the quality of the final casted parts regarding mechanical properties, color, polished state, porosities...
- JPS61133339 A disclosed a Pt-(3-8)%Cr-(3-7%)Mn alloy with a hardness ranging from 210-320 Hv.
- the present invention provides a platinum based alloy exhibiting these properties. It also affords an alternative to platinum alloys comprising gallium.
- the present invention relates to a platinum based alloy that is easily castable and exhibits optimal properties and quality such as workability, hardness, porosity and grain size. Dues to its properties, this alloy is particularly appropriate for substituting the PtCuGa alloy commonly used in jewelry applications.
- the invention relates to a platinum based alloy consisting of:
- the platinum based alloy does not contain any gallium.
- the absence of gallium results in lowering the solidification interval; a narrow window may allow avoiding chemical segregating or other defects. It also results in avoiding premature hardening during brazing, welding..., which usually leads to uneven properties and flaws.
- the platinum based alloy is therefore constituted of Pt; Mn and/or V; Pd and/or Cr; and at least one of Ir, Cu, Au, Fe, Al, W, Rh, Ge and Y.
- the platinum based alloy may contain impurities.
- the amount of impurities is generally insignificant as it does not amount to more than 500 ppm in weight, more preferably no more than 100 ppm, and even more preferably no more than 50 ppm.
- 850 wt%o or more of platinum means that, for 1000 parts by weight of platinum based alloy, said alloy contains at least 850 parts by weight of platinum i.e. at least 85 wt%.
- 0.1 wt%o to 100 wt%o preferably 0.1 wt%o to 50 wt%o, more preferably 1 wt%o to 50 wt%o, even, more preferably 1 wt%o to 25 wt%o
- 0.1 wt%o to 25 wt%o also includes the 0.1 wt%o to 25 wt%o range.
- the alloy according to the invention has a homogeneous composition; the different elements are homogeneously spread within the alloy. It necessarily contains at least 4 elements: Pt, first alloying element, second alloying element and third alloying element. It may contain up to 14 elements: Pt; Mn and V (first alloying element); Pd and Cr (second alloying element); Ir, Cu, Au, Fe, Al, W, Rh, Ge and Y (third alloying element).
- the alloy may comprise any one of the following combinations of elements:
- the third alloying element is at least one of Ir, Cu, Au, Fe, Al, W, Rh, Ge and Y.
- the platinum based alloy contains at least 850 wt%o of platinum. However, according to a preferred embodiment, it may contain between 850 wt%o and 990 wt%o of platinum.
- it contains 950 wt%o or more of platinum, preferably 953 wt%o or more of platinum.
- the platinum based alloy may contain only one of manganese or vanadium, it may comprise both of these elements. Manganese and/or vanadium are usually added to the alloy in order to improve its hardness and its mechanical properties.
- the platinum based alloy contains from 0.1 wt%o to 100 wt%o of manganese and/or vanadium. It preferably contains between 0.1 wt%o and 50 wt%o of at least one of manganese and vanadium, more preferably between 1 wt%o and 50 wt%o, even more preferably between 5 wt%o and 35 wt%o.
- the platinum based alloy may contain only one of palladium or chromium. Nevertheless, it may comprise both of these elements. Palladium and/or chromium may be added to the alloy in order to improve its casting properties. Indeed, the melting point (or melting range) of the alloy can be adjusted by introducing more or less of Pd and/or Cr.
- the platinum based alloy contains from 0.1 wt%o to 100 wt%o of palladium and/or chromium. It preferably contains between 0.1 wt%o and 50 wt%o of at least one of palladium and chromium, more preferably between 1 wt%o and 50 wt%o, even, more preferably between 1 wt%o and 25 wt%o.
- the platinum based alloy also contains a non-zero quantity of at least one third alloying element, i.e. a non-zero quantity of any of iridium, copper, gold, iron, aluminum, tungsten, rhodium, germanium, yttrium and mixtures thereof. It contains at least 0.1 wt%o of third alloying element. It may comprise no more than 50 wt%o of third alloying element, even more preferably no more than 30 wt%o, and even more preferably no more than 25 wt%o. It can therefore comprise between 0.1 wt%o and 30 wt%o of third alloying element.
- the alloy according to the invention is preferably used in jewelry, its properties such as hardness or castability have to be controlled. Based on the above, the skilled person in the art will therefore adjust the amount of Ir, Cu, Au, Fe, Al, W, Rh, Ge and Y in order to obtain the desired properties.
- the platinum based alloy may contain any one of the following combinations of alloying elements:
- the alloy contains an amount of iridium that is preferably between 0.01 and 50 wt%o, more preferably between 2 and 20 wt%o, even more preferably between 3 and 19 wt%o.
- the alloy contains an amount of copper that is preferably between 0.01 and 50 wt%o, more preferably between 3 and 13 wt%o.
- the alloy contains an amount of gold that is preferably between 0.01 and 50 wt%o, more preferably between 4 and 22 wt%o.
- the alloy contains an amount of iron that is preferably between 0.01 and 50 wt%o, more preferably between 3 and 12 wt%o.
- the alloy contains an amount of aluminum that is preferably between 0.01 and 25 wt%o, more preferably between 15 and 25 wt%o.
- the alloy contains an amount of tungsten that is preferably between 0.01 and 50 wt%o, more preferably between 9 and 11 wt%o.
- the alloy contains an amount of rhodium that is preferably between 0.01 and 50 wt%o, more preferably between 3 and 11 wt%o.
- the alloy contains an amount of germanium that is preferably between 0.01 and 36 wt%o, more preferably between 3 and 11 wt%o.
- the alloy contains an amount of yttrium that is preferably between 0.01 and 1 wt%o.
- the platinum based alloy is recyclable since it can be indefinitely shaped, melted and reshaped.
- the platinum based alloy does not chemically interact with conventional molding apparatus. For instance, it does not react with gypsum.
- the platinum based alloy has a Vickers hardness that preferably ranges between 80 and 350 HV, more preferably between 150 and 200HV.
- the platinum based alloy has an elongation at break that can reach 30%.
- the platinum based alloy has a porosity size that is preferably less than 100 ⁇ m, more preferably less than 50 ⁇ m, even more preferably less than 15 ⁇ m.
- the porosity size relates to the greatest dimension of a pore, for instance its diameter if a pore has the shape of a sphere.
- the platinum based alloy has a porosity that is preferably less than 1%, more preferably less than 0.25%.
- the porosity relates to the total volume of pores in the alloy i.e. the volume of voids within a piece of alloy.
- the platinum based alloy has a maximum grain size of 250 ⁇ m, preferably smaller than 150 ⁇ m. As a result of such a grain size, the items made of the platinum based alloy have a surface that does not show any flaws that are visible with the naked eye.
- the above porosity and grain features may relate to the bulk form of the alloy or to a finished product resulting from the casting of the alloy.
- the platinum based alloy has a melting temperature of less than 2000°C, preferably less than 1700°C.
- the platinum based alloy is easily casted as it meets the conventional castability grid tests.
- This platinum based alloy can be prepared according to conventional techniques. The skilled person in the art will therefore be able to prepare this alloy based on the above description.
- the precursors of the platinum based alloy may be melted in an arc furnace or in an induction casting machine.
- the pure elements are first weighed, cleaned in an ultrasonic bath and then melted together, optionally under a controlled atmosphere.
- this platinum based alloy can be used in jewelry or in the watch industry to name a few. Indeed, the skilled person in the art will select the appropriate alloying element(s) in order to reach the desired castability and hardness while affording proper setting properties (jewelry) and/or resistance to scratches (watch).
- the present invention also relates to an item comprising or consisting of the above platinum based alloy. Accordingly, this platinum based alloy can be used in order to manufacture luxury goods.
- the item comprising or consisting of the above platinum based alloy can be a jewel, a leather good, or a clothing accessory. It may also be a watch, a writing accessory, or a decorative item. For instance, it can be any of the followings: ring, ear ring, necklace, bracelet, pendant, watch, buckle (belt, purse%), tie bar, cuff links, money clip, hair pin, pen, paper knife...
- Comparative example PtCuGa is an alloy comprising 953 w%o Pt, 20 w%o Cu and 27 w%o Ga.
- Table 2 Experimental results Alloy Hardness (HV) Solidification temperature (°C) Porosity (%) Porosity size ( ⁇ m) PtCuGa 225 ⁇ 25 1220 0.26 16 INV.1 279 ⁇ 30 1400 0.49 51 INV.2 164 ⁇ 6 1550 0.01 51 INV.3 95 ⁇ 3 1800 0.05 51 INV.4 109 ⁇ 5 1600 0.15 39 INV.5 147 ⁇ 6 1800 0.04 22 INV.6 164 ⁇ 12 1420 0.02 9 INV.7 165 ⁇ 10 1420 0.01 3 INV.8 203 ⁇ 13 1490 0.48 27 INV.9 188 ⁇ 26 1410 0.14 15 INV.10 161 ⁇ 11 1500 0.53 11
- Table 2 clearly shows that the alloy according to the invention affords similar or improved properties as compared to the conventional PtCuGa alloy.
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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 (15)
- Alliage à base de platine consistant en :- 850 %o en poids ou plus de platine,- de 0,1 %o à 100 %o en poids d'un premier élément d'alliage qui est au moins un parmi le manganèse et le vanadium,- de 0,1 %o à 100 %o en poids d'un deuxième élément d'alliage qui est au moins un parmi le palladium et le chrome,- dans lequel l'alliage à base de platine contient nécessairement au moins un troisième élément d'alliage en une quantité d'au moins 0,1 %o en poids mais inférieure à 99,9 %o en poids,dans lequel le troisième élément d'alliage est choisi dans le groupe consistant en iridium, cuivre, or, fer, aluminium, tungstène, rhodium, germanium, yttrium, et des mélanges de ceux-ci.
- Alliage à base de platine selon la revendication 1, dans lequel l'alliage à base de platine contient entre 850 %o et 990 %o en poids de platine.
- Alliage à base de platine selon la revendication 1 ou 2, dans lequel l'alliage à base de platine contient 950 %o en poids ou plus de platine, de préférence 953 %o en poids ou plus de platine.
- Alliage à base de platine selon l'une quelconque des revendications 1 à 3, dans lequel l'alliage à base de platine contient l'une quelconque des combinaisons suivantes :- platine, manganèse, palladium et le troisième élément d'alliage, ou- platine, manganèse, chrome et le troisième élément d'alliage, ou- platine, vanadium, palladium et le troisième élément d'alliage, ou- platine, vanadium, chrome et le troisième élément d'alliage.
- Alliage à base de platine selon l'une quelconque des revendications 1 à 4, dans lequel l'alliage à base de platine contient entre 1 %o et 50 %o en poids d'au moins un parmi le manganèse et le vanadium.
- Alliage à base de platine selon l'une quelconque des revendications 1 à 5, dans lequel l'alliage à base de platine contient entre 1 %o et 50 %o en poids d'au moins un parmi le palladium et le chrome.
- Alliage à base de platine selon l'une quelconque des revendications 1 à 6, dans lequel l'alliage à base de platine contient entre 0,1 %o en poids et 50 %o en poids du troisième élément d'alliage, de préférence entre 0,1 %o en poids et 30 ‰ en poids.
- Alliage à base de platine selon l'une quelconque des revendications 1 à 7, dans lequel le troisième élément d'alliage est au moins un élément choisi dans le groupe consistant en iridium, cuivre, or, fer, aluminium, tungstène, rhodium, germanium, yttrium et des mélanges de ceux-ci,
dans lequel
lorsque le troisième élément d'alliage est au moins de l'iridium, l'alliage à base de platine contient entre 0,01 et 50 %o en poids d'iridium,
lorsque le troisième élément d'alliage est au moins du cuivre, l'alliage à base de platine contient entre 0,01 et 50 %o en poids de cuivre,
lorsque le troisième élément d'alliage est au moins de l'or, l'alliage à base de platine contient entre 0,01 et 50 %o en poids d'or,
lorsque le troisième élément d'alliage est au moins du fer, l'alliage à base de platine contient entre 0,01 et 50 %o en poids de fer,
lorsque le troisième élément d'alliage est au moins de l'aluminium, l'alliage à base de platine contient entre 0,01 et 25 %o en poids d'aluminium,
lorsque le troisième élément d'alliage est au moins du tungstène, l'alliage à base de platine contient entre 0,01 et 50 %o en poids de tungstène,
lorsque le troisième élément d'alliage est au moins du rhodium, l'alliage à base de platine contient entre 0,01 et 50 %o en poids de rhodium,
lorsque le troisième élément d'alliage est au moins du germanium, l'alliage à base de platine contient entre 0,01 et 36 %o en poids de germanium,
lorsque le troisième élément d'alliage est au moins de l'yttrium, l'alliage à base de platine contient entre 0,01 et 1 %o en poids d'yttrium. - Alliage à base de platine selon l'une quelconque des revendications 1 à 8, dans lequel le troisième élément d'alliage est au moins un élément choisi dans le groupe consistant en iridium, cuivre, or, fer, aluminium, tungstène, rhodium, germanium, yttrium et des mélanges de ceux-ci,
dans lequel
lorsque le troisième élément d'alliage est au moins de l'iridium, l'alliage à base de platine contient entre 2 et 20 %o en poids d'iridium,
lorsque le troisième élément d'alliage est au moins du cuivre, l'alliage à base de platine contient entre 3 et 13 %o en poids de cuivre,
lorsque le troisième élément d'alliage est au moins de l'or, l'alliage à base de platine contient entre 4 et 22 %o en poids d'or,
lorsque le troisième élément d'alliage est au moins du fer, l'alliage à base de platine contient entre 3 et 12 %o en poids de fer,
lorsque le troisième élément d'alliage est au moins de l'aluminium, l'alliage à base de platine contient entre 15 et 25 %o en poids d'aluminium,
lorsque le troisième élément d'alliage est au moins du tungstène, l'alliage à base de platine contient entre 9 et 11 %o en poids de tungstène,
lorsque le troisième élément d'alliage est au moins du rhodium, l'alliage à base de platine contient entre 3 et 11 %o en poids de rhodium,
lorsque le troisième élément d'alliage est au moins du germanium, l'alliage à base de platine contient entre 3 et 11 %o en poids de germanium,
lorsque le troisième élément d'alliage est au moins de l'yttrium, l'alliage à base de platine contient entre 0,01 et 1 %o en poids d'yttrium. - Alliage à base de platine selon l'une quelconque des revendications 1 à 9, dans lequel l'alliage à base de platine contient l'une quelconque des combinaisons suivantes d'éléments d'alliage :- fer, cuivre et aluminium, de préférence en combinaison avec manganèse et chrome,- cuivre et or, de préférence en combinaison avec vanadium et palladium,- cuivre et or, de préférence en combinaison avec manganèse et palladium,- rhodium et iridium, de préférence en combinaison avec manganèse et palladium,- fer et cuivre, de préférence en combinaison avec manganèse et chrome,- fer, cuivre et yttrium, de préférence en combinaison avec vanadium et palladium,- fer, tungstène et germanium, de préférence en combinaison avec manganèse et palladium,- fer, cuivre et germanium, de préférence en combinaison avec le manganèse et palladium,- fer, germanium et yttrium, de préférence en combinaison avec manganèse et palladium.
- Bijou comprenant l'alliage à base de platine selon l'une quelconque des revendications 1 à 10.
- Produit de maroquinerie comprenant l'alliage à base de platine selon l'une quelconque des revendications 1 à 10.
- Accessoire de vêtement comprenant l'alliage à base de platine selon l'une quelconque des revendications 1 à 10.
- Utilisation de l'alliage à base de platine selon l'une quelconque des revendications 1 à 10 dans l'industrie horlogère.
- Utilisation de l'alliage à base de platine selon l'une quelconque des revendications 1 à 10 dans l'industrie de la bijouterie.
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EP17186552.0A EP3444364B1 (fr) | 2017-08-17 | 2017-08-17 | Alliage à base de platine, son utilisation |
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EP17186552.0A EP3444364B1 (fr) | 2017-08-17 | 2017-08-17 | Alliage à base de platine, son utilisation |
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EP3444364A1 EP3444364A1 (fr) | 2019-02-20 |
EP3444364B1 true EP3444364B1 (fr) | 2021-07-14 |
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US11311941B2 (en) * | 2019-04-01 | 2022-04-26 | General Electric Company | Fabrication of palladium-chromium alloy microparticles |
EP3978884B1 (fr) * | 2020-10-02 | 2024-05-29 | Heraeus Precious Metals GmbH & Co. KG | Fil ayant une composition platine permettant de mettre en contact des capteurs de température |
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Publication number | Priority date | Publication date | Assignee | Title |
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JPS5743947A (en) * | 1980-08-29 | 1982-03-12 | Tanaka Kikinzoku Kogyo Kk | Platinum alloy for ornamental product |
JPS61133339A (ja) * | 1984-12-04 | 1986-06-20 | Tanaka Kikinzoku Kogyo Kk | 装飾品用白金合金 |
JPS61133340A (ja) * | 1984-12-04 | 1986-06-20 | Tanaka Kikinzoku Kogyo Kk | 装飾品用白金合金 |
JPS61281841A (ja) * | 1985-06-07 | 1986-12-12 | Tanaka Kikinzoku Kogyo Kk | 装飾品用白金合金 |
JPH0243334A (ja) * | 1988-08-02 | 1990-02-13 | Tokuriki Honten Co Ltd | 装飾用白金合金 |
PL165298B1 (pl) * | 1991-08-29 | 1994-12-30 | Inst Metali Niezelaznych | Stop platyny |
-
2017
- 2017-08-17 EP EP17186552.0A patent/EP3444364B1/fr active Active
Non-Patent Citations (1)
Title |
---|
J CHASTON: "The Puritv of Platinum", PLATINUM METALS REV., 1 April 1971 (1971-04-01), pages 122 - 128, XP055706098, Retrieved from the Internet <URL:https://www.technology.matthey.com/pdf/pmr-v15-i4-122-128.pdf> [retrieved on 20200617] * |
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