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
• • A—HUMAN NECESSITIES
  • A44—HABERDASHERY; JEWELLERY
  • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
  • A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
• • C—CHEMISTRY; METALLURGY
  • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
  • C22C—ALLOYS
  • C22C14/00—Alloys based on titanium
• • C—CHEMISTRY; METALLURGY
  • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
  • C22C—ALLOYS
  • C22C30/00—Alloys containing less than 50% by weight of each constituent
• • C—CHEMISTRY; METALLURGY
  • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
  • C22C—ALLOYS
  • C22C30/00—Alloys containing less than 50% by weight of each constituent
  • C22C30/02—Alloys containing less than 50% by weight of each constituent containing copper
• • 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
  • C22C5/02—Alloys based on gold
• • G—PHYSICS
  • G04—HOROLOGY
  • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
  • G04B37/00—Cases
  • G04B37/22—Materials or processes of manufacturing pocket watch or wrist watch cases
• • G—PHYSICS
  • G04—HOROLOGY
  • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
  • G04B45/00—Time pieces of which the indicating means or cases provoke special effects, e.g. aesthetic effects
  • G04B45/0076—Decoration of the case and of parts thereof, e.g. as a method of manufacture thereof

Definitions

• the invention relates to a cladding component for a timepiece or jewelery, made of precious alloy light comprising titanium.
• the invention also relates to a timepiece or jewelery comprising at least one such dressing component.
• the invention relates to the field of timepieces for clocks, jewelery, or jewelry.
• a characteristic common to most precious alloys used in watchmaking is their relatively high density (> 10 g / cm 3 ). Indeed, the two main precious metals used in watchmaking, namely gold and platinum, have respective densities of about 19.3 and 21.5 g / cm 3 . This has the consequence of making their alloys relatively heavy. Silver and palladium are lighter (10.5 and 12 g / cm 3 respectively) but much less used in watchmaking.
• WO 2012/1 19647 A1 describes ceramic-precious metal composites that can reach relatively low densities ( ⁇ 8 g / cm 3 ).
• the TiPd, TiPt and TiAu equi-atomic alloys have been known for a long time and have been the subject of several studies involving high-temperature shape-memory alloys.
• TiPd and TiAu alloys are titrable and therefore of interest for watchmaking and jewelery as particularly precious precious metals.
• the document EP0267318 in the name of HAFNER mentions certain palladium alloys: from 25 to 50% by weight of palladium, with from 37 to 69% of silver, and a complement of copper, zinc, gallium, cobalt, indium, tin, iron, aluminum, nickel, germanium, rhenium, but without titanium, and other alloys, from 51 to 95% of palladium, with contributions of different metals, of which only one alloy comprises gold, with mass 70% palladium, 15% silver, 5% copper, 5% zinc, 3% platinum, 2% gold.
• the only composition disclosed with titanium, Ti 5 Pd 95 type relates to an alloy with 5% titanium, and 95% palladium.
• the document EP0239747 in the name of SUMITOMO describes the addition of 0.001 to 20% of chromium to a titanium-palladium type alloy with 40 to 60 atomic% of titanium, the balance being made on palladium.
• the disclosures relate to seven alloys at 50 atomic% titanium, with 40 to 50 atomic% palladium, and 0 to 10 atomic% chromium: Ti 50 Pd 4 o, Ti 5 oPd 45 C r 5, Ti 5 oPd 43 Cr7 , T550Pd 42 Cr8, T5dPd 4 i .5Cr8.5, T5dPd 4 iCrg, T5dPd 4 oCrio-
• the invention proposes to make watchmaking components, both valuable to benefit the title and the resistance over time and corrosion, and lighter than known alloys.
• the invention relates to a dressing component for timepiece or jewelery, according to claim 1.
• the invention also relates to a timepiece or jewelery comprising at least one such dressing component.
• FIG. 1 compares the stress-strain curves of alloys tested in compression with a strain rate of 0.001 / s:
• FIG. 2 shows a watch comprising a box and a bracelet according to the invention.
• the invention is concerned with the replacement of gold and palladium in alloys comprising titanium.
• the invention relates to a dressing component 1 of watchmaking or jewelery (including jewelery) precious alloy light comprising titanium, and any timepiece or jewelery comprising such a component.
• the invention relates to two families of alloys, described successively.
• the first family of alloys describes nine type compositions (first to ninth), using five groups of metals (first to seventh) and some of their subgroups.
• alloys as described above in Table 1, which are overloaded with precious metal with respect to the titles to which they can be punched, generates an unnecessary extra cost.
• advantageous substitutes may be suitable for the overloading of precious metal, and in particular the metals of a second group comprising: Fe, Co, Ni, Ru, Rh, Ir, Au, Pt, Nb, V, Mo , Ta, W.
• the compression ductility alloys Ti 5 OPD 5.5Nbi4.5 3, Ti 5 OPD 2Fei8 3 and Ti 4 4.5Pd35Nbi i 9 .5 Fe (at.%) Is not significantly different from that of an alloy Equi-atomic binary TiPd, as visible in Figure 1, which compares the stress-strain curves of alloys Ti 5 oPd 3 5.5Nbi4.5, Ti 5 oPd 3 2Fei8, Ti 44 .5Pd 3 5Nbn Fe9.5 and Ti 50 Pd 5 o, tested in compression with a deformation rate of 0.001 / s.
• the elements of a third group comprising: Cr, Mn, Cu, Zn and Ag can be introduced in a limited amount ( ⁇ 10 at%) in the TiPd and TiAu alloys instead of palladium and gold, respectively.
• the elements of a fourth group comprising: Al, Si, Ge, Sn, Sb and In can be introduced in small quantities ( ⁇ 4 at%) in TiPd and TiAu alloys in place of titanium or palladium and gold, respectively.
• substitute materials should not generate health risks.
• the substitute materials of the latter must not be valuable.
• the substitute materials in order not to overload the alloy, the substitute materials, ideally, are not heavier than the substituted metal.
• a particularly advantageous embodiment of the invention relates to the substitution of a portion of the palladium in a TiPd alloy.
• the invention thus relates to a ductile alloy based on Ti-Pd equ atomic intermetallic, in which the excess of palladium relative to the mass content of Pd500 is partially or totally replaced by a non-precious element, such that titanium always represents 50 atomic% of the final alloy.
• a ductile alloy based on Ti-Pd equ atomic intermetallic, in which the excess of palladium relative to the mass content of Pd500 is partially or totally replaced by a non-precious element, such that titanium always represents 50 atomic% of the final alloy.
• Such an alloy has sufficient ductility to provide a formability similar to that of conventional titanium alloys.
• TiPdFe and TiPdNb ternary alloys make it possible to attain the desired title.
• TiPdNb alloys do not exhibit a parasitic shape memory effect, which is advantageous.
• composition of the alloy may be formulated according to one of the following compositions, in which all the fractions are atomic:
• titanium Part of the titanium is replaced by the same atomic quantity of zirconium or hafnium, these three elements having very similar chemical properties and being easily substitutable with each other:
• M one or more of a first group consisting of: Nb, V, Mo, Ta, W, Fe, Co, Ni, Ru, Rh, Ir, Au, Pt, Cr, Mn, Cu, Zn, Ag, Al, If, Ge, Sn, Sb, In.
• a defines the offset with respect to the equi-atomic composition.
• x defines the degree of replacement of titanium by Zr and Hf. defines the fraction of substitution element.
• compositions which follow are particularly suitable:
• Composition according to the fifth composition and for which M comprises Fe and / or Nb as majority elements.
• composition according to the sixth composition and containing 50% by weight of palladium.
• Ti49.7Pd32Fe15.3Cr3 atomic composition has interesting characteristics: low memory effect, low second phase quantity, and not too high mechanical properties.
• compositions of this ninth composition containing atomically 12.5 and 10.5% of niobium exhibit a shape memory effect while the Ti5oPd35 composition.
• 5 Nbi4.5 of Figure 1 containing 14.5% niobium has no effect of this nature.
• This 14.5% niobium composition makes it possible to overcome these effects thanks to its two-phase nature.
• compositions in particular as regards titanium, of the order of 0.3% of the total, do not fundamentally change the properties of these various compositions, and do not affect their ability to replace alloys. classics.
• the invention thus relates to a cladding component for a timepiece or jewelery, made of a precious precious alloy comprising titanium.
• a cladding component for a timepiece or jewelery made of a precious precious alloy comprising titanium.
• the composition of this alloy obeys the atomic composition:
• M being one or more of a first group consisting of: Nb, V, Mo, Ta, W, Fe, Co, Ni, Ru, Rh, Ir, Au, Pt, Cr, Mn, Cu, Zn, Ag, Al , Si, Ge, Sn, Sb, In.
• this alloy comprises between 15 and 60 atomic% of titanium, between 0 and 69 atomic% of palladium, between 1 and 40 atomic% of gold, and the complement at 100 atomic% comprises a total included between 0 and 15% atomic composition of zirconium and hafnium, and one or more components selected from a subgroup of the first group consisting of: Nb, V, Mo, Ta, W, Fe, Co, Ni, Ru, Rh, Ir, Pt, Cr, Mn , Cu, Zn, Ag, Al, Si, Ge, Sn, Sb, In.
• the alloy comprises in atomic% more palladium than gold.
• the alloy comprises between 30% and 60% by weight of titanium, and the remainder of said alloy comprises a majority of palladium, and, in an amount greater than 10% by weight of the total of the alloy, at least one metal of a second group comprising: Fe, Co, Ni, Ru, Rh, Ir, Au, Pt, Nb, V, Mo, Ta, W.
• the alloy comprises between 30% and 60% by weight of titanium, and the remainder of this alloy comprises a majority of gold, and, in an amount greater than 10% by weight of the total of the alloy, at least a metal of a second group comprising: Fe, Co, Ni, Ru, Rh, Ir, Au, Pt, Nb, V, Mo, Ta, W.
• the alloy comprises at least one metal of a third group comprising: Cr, Mn, Cu, Zn and Ag, the total quantity of the metals of said third group is less than 10 atomic% of the total of the alloy .
• the alloy comprises at least one metal of a fourth group comprising: Al, Si, Ge, Sn, Sb and In, the overall quantity of the metals of the fourth group is less than 4 atomic% of the total of the alloy.
• the alloy comprises between 49.0 and 51.0 atomic% of titanium.
• the total atomic% of titanium, zirconium, and hafnium is between 49.0 and 51.0 atomic%.
• the alloy obeys the atomic composition Ti a- x (Zr, Hf) x M y Pdi- a -y, with 0.3 ⁇ a ⁇ 0.6; 0 ⁇ x ⁇ 0.05; 0.01 ⁇ y ⁇ 0.4.
• the alloy obeys the atomic composition Ti a- x (Zr, Hf) ⁇ M y Pd z , with 0.3 ⁇ a ⁇ 0.6; 0 ⁇ x ⁇ 0.05; 0.01 ⁇ y ⁇ 0.4; 0.2 ⁇ z ⁇ 0.55.
• the alloy obeys the atomic composition Ti a . x (Zr, Hf) x M y Pd z, with 0.44 ⁇ a ⁇ 0.55; 0 ⁇ x ⁇ 0.05; 0.07 ⁇ y ⁇ 0.28; 0.25 ⁇ z ⁇ 0.45.
• the alloy obeys the atomic composition Ti r Pd s Au v , with r between
• the alloy obeys the atomic composition Tio.50Pdo.404Auo.09.
• M comprises one or more elements taken from a fifth group comprising: Nb, Mo, Fe, Cr, Mn, Cu, Zn, Ag, Al, Si, Ge, Sn, In.
• M comprises Fe and / or Nb as majority elements.
• the alloy comprises 50% by weight of palladium. This mass proportion of the total of the alloy does not naturally come into conflict with the atomic proportions of the alloying elements, this is an additional condition, which is by no means incompatible.
• the second family of alloys describes compositions, including three groups of metals (main group of metals and two subgroups of metals) and five groups of traces (main group of traces and four subgroups of traces) . The following is about this second family.
• the invention relates to a cladding component 1 for a timepiece or jewelery, made of light precious alloy of this second family of alloys, comprising titanium and palladium.
• This alloy obeys the atomic formulation
• the alloy comprises at most two metals M, selected from a main group of metals consisting of: Nb, V, Fe, Co, Au, Pt, the atomic fraction c being the total of the atomic fractions of the metals M,
• the atomic fraction d is the total of the atomic fractions of traces of metals T, each trace of metal T being taken with an atomic proportion of less than 3.0% of the total of the alloy, the traces of metal T being taken from a main group of traces comprising Nb, V, Mo, Ta, W, Fe, Co, Ni, Ru, Rh, Ir, Au, Pt, Cr, Mn, Cu, Zn, Ag, Al, B, Si, Ge, Sn, Sb, In, with the exception of the metals M incorporated in the alloy, which alloy comprises at least 0.05% boron,
• this alloy comprises, in atomic proportions of the total, less than 0.3% of boron.
• these atomic fractions a, b, c, d are such that:
• these at most two metals M are taken from a first subgroup of metals composed of: Nb, V, Fe, the atomic fraction c being the total of the atomic fractions of the metals M,
• the traces of metal T are taken from a first subgroup of traces comprising Nb, V, Mo, Ta, W, Fe, Ni, Ru, Rh, Ir, Cr, Mn, Cu, Zn, Ag, Al, B, Si, Ge, Sn, Sb, In, with the exception of the metals M incorporated in the alloy.
• the traces of metal T are taken from a second subgroup of traces comprising Nb, V, Fe, Ru, Rh, Au, Pt, Cr, B, with the exception of the M metals incorporated in the alloy.
• these at most two metals M are taken from a second subgroup of metals composed of: Nb, Fe, the atomic fraction c being the total of the atomic fractions M metals,
• the alloy comprises a single metal M consisting of iron
• the alloy obeys the atomic formulation Ti a Pd b Fe c T d ,
• the traces of metal T are taken from a third subgroup of traces comprising Nb, V, Ru, Rh, Au, Pt, Cr, B,
• the alloy comprises a single metal M consisting of iron
• the alloy comprises at most two traces of metal T taken from chromium and boron, and the atomic fractions a, b, c, d are such that:
• the alloy has a single metal trace T constituted by chromium, the alloy obeying the Ti atomic formulation Pd b Fe c Cr d.
• the alloy comprises a single metal M consisting of niobium
• the alloy obeys the atomic formulation Ti a Pd b Nb c T d ,
• the traces of metal T are taken from a fourth subgroup of traces comprising V, Fe, Ru, Rh, Au, Pt, Cr, B,
• the alloy comprises a single metal M consisting of niobium
• the alloy comprises at most two traces of metal T taken from chromium and boron, and the atomic fractions a, b, c, d are such that:
• the alloy comprises a single metal M consisting of niobium
• the alloy comprises a single trace metal T consists of chromium
• the alloy obeys the Ti atomic formulation Pd b Nb c Cr d
• the mass content of the palladium is less than or equal to 60.0% of the total of the alloy.
• the mass content of palladium is less than or equal to 55.0% of the total of the alloy.
• the mass content of the palladium is less than or equal to 52.5% of the total of the alloy.
• the mass content of palladium is less than or equal to 51.0% of the total of the alloy.
• the invention also relates to a timepiece 10 or jewelery, including a watch, comprising at least one such dressing component 1.
• the various alloys selected above are ductile, and therefore allow shaping by the usual methods of deformation.
• alloys with substitution components according to the invention makes it possible, again, to eliminate the shape memory effect observed in most of the base alloys described.
• the alloy Tio.5Pdo.354Nbo.146 has an almost zero shape memory effect.
• the invention authorizes many applications, and in particular and without limitation:
• - trim elements middle, back, watch glasses, and external trim elements (pushers, clasps, bracelets);

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• 2014
  • 2014-12-29 EP EP14200381.3A patent/EP3040790A1/de not_active Withdrawn
• 2015
  • 2015-12-17 WO PCT/EP2015/080211 patent/WO2016107752A1/fr active Application Filing
  • 2015-12-17 WO PCT/EP2015/080270 patent/WO2016107755A1/fr active Application Filing
  • 2015-12-17 EP EP15817229.6A patent/EP3240915B1/de active Active
  • 2015-12-17 JP JP2017507083A patent/JP6389561B2/ja active Active
  • 2015-12-17 US US15/533,471 patent/US10206465B2/en active Active
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