BE1011190A6 - Gold coloured stainless precious bronze with enhanced physico-chemical characteristics - Google Patents
Gold coloured stainless precious bronze with enhanced physico-chemical characteristics Download PDFInfo
- Publication number
- BE1011190A6 BE1011190A6 BE9700481A BE9700481A BE1011190A6 BE 1011190 A6 BE1011190 A6 BE 1011190A6 BE 9700481 A BE9700481 A BE 9700481A BE 9700481 A BE9700481 A BE 9700481A BE 1011190 A6 BE1011190 A6 BE 1011190A6
- Authority
- BE
- Belgium
- Prior art keywords
- precious
- copper
- gold
- aluminum
- tin
- Prior art date
Links
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title claims abstract description 10
- 229910052737 gold Inorganic materials 0.000 title claims abstract description 10
- 239000010931 gold Substances 0.000 title claims abstract description 10
- 229910000906 Bronze Inorganic materials 0.000 title claims description 9
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 title description 6
- 239000010974 bronze Substances 0.000 title description 4
- 239000000126 substance Substances 0.000 title description 4
- 238000005260 corrosion Methods 0.000 claims abstract description 13
- 238000010276 construction Methods 0.000 claims abstract description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- 230000007797 corrosion Effects 0.000 claims description 12
- 230000003647 oxidation Effects 0.000 claims description 10
- 238000007254 oxidation reaction Methods 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910045601 alloy Inorganic materials 0.000 claims description 8
- 239000000956 alloy Substances 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 7
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 6
- 229910052804 chromium Inorganic materials 0.000 claims description 6
- 239000011651 chromium Substances 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 239000000654 additive Substances 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 229910052747 lanthanoid Inorganic materials 0.000 claims description 4
- 150000002602 lanthanoids Chemical class 0.000 claims description 4
- 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 description 4
- 229910052697 platinum Inorganic materials 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 229910052727 yttrium Inorganic materials 0.000 claims description 3
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 3
- 229910052790 beryllium Inorganic materials 0.000 claims description 2
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 claims description 2
- 229910017052 cobalt Inorganic materials 0.000 claims description 2
- 239000010941 cobalt Substances 0.000 claims description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 239000010985 leather Substances 0.000 claims 1
- 238000007493 shaping process Methods 0.000 claims 1
- 229910000881 Cu alloy Inorganic materials 0.000 abstract description 5
- 238000007747 plating Methods 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000009877 rendering Methods 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 239000010953 base metal Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 2
- 210000004243 sweat Anatomy 0.000 description 2
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- 241000861223 Issus Species 0.000 description 1
- 241001275902 Parabramis pekinensis Species 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000007815 allergy Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- -1 and or Chemical compound 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/01—Alloys based on copper with aluminium as the next major constituent
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Adornments (AREA)
Abstract
The high-tech mechanical construction, gold-working and craft industries, that use copper alloys, are confronted with their oxidation-corrosion. The compositions claimed for these new GOLD coloured bronzes, with enhanced physicochemical and wear resistance, allow rustproofness to be obtained, rendering, in most cases, costly surface protection coatings, such as varnishing and gold plating, superfluous.
Description
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BRONZE PRECIEUX INOXYDABLE DE COULEUR OR A HAUTES CARACTERISTIQUES PHYSICO-CHIMIQUES La présente invention est relative à un bronze précieux inoxydable, à hautes performances, et de couleur semblable à l'OR, destiné aux Industnes de pointe et de luxe, dont la qualité pnnclpale est de résister à la corrosion et à l'oxydation Dans les industries mécaniques performantes, de luxe, chimiques et alimentaires on utilise différents types d'alliages de cuivre ou bronzes pour leur tendance de résistance à la corrosion et à l'oxydation en milieu acqueux Notamment les bronzes cuivre-étain (Cu-Sn), et les cupros-aluminium appelés communément bronzes à l'aluminium Un des meilleurs est l'alliage cuivre à 12,5 % d'étain Cependant,
leur résistance à la corrosion atmosphérique des villes est faible en raison de la formation rapide d'oxydes colorés Incompatibles avec l'utilisation dans les industries de luxe telles que l'orfèvene, blJoutene, et ou à des fins décoratives en constructions A haute température, cette altération est d'autant plus rapide et nuisible aux caractéristiques mécaniques et chimiques Par contre, les bronzes à l'aluminium ont l'avantage de présenter une altération transparente pratiquement étanche par la formation d'alumine, et ce, même à haute température, mais cette couche ne présente pratiquement pas de résistance en milieux atmosphénques acides, comme nous les rencontrons aujourd'hui De plus,
tous ces alliages bases cuivre ou bronzes ont une résistance faible à la corrosion résultant de l'acidité de la sueur humaine Pour pallier à cette faiblesse Ils font habituellement l'objet, dans les Industnes de luxe, d'un onéreux plaçage d'or de 8 microns, finissant toujours par perçer par usure de cette couche et du vernis protecteur Ce qui ouvre Immédiatement la porte à la corrosion du métal de base
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La présente invention a pour objet de porter remède à ces inconvénients de résistance à la corrosion et à l'oxydation, tout en donnant à l'alliage revendiqué une couleur comparable à celle de l'or, ainsi que des caractéristiques mécaniques élevées, semblables à celles des aciers Inoxydables,
le destinant par conséquent aux industries de luxe, mécaniques et de pointe, telles que notamment, dans les domaines de la bijouterie, de la construction, du naval, de l'aéronautique et du spatial Le bronze précieux, objet de la présente invention, est caractérisé par quatre éléments principaux qui lui conférent ses caractéristiques physicochimiques et mécaniques de base, renforcées par des lanthanides On y trouve du cuivre comme métal de base, de l'étain entre 2,4 et 6,9 %, de l'aluminium entre 6,5 et 13%, de l'yttrium entre 0,0025 et 1, 20%, ainsi que des impuretés rencontrées normalement dans de tels alliages, qui sont strictement limitées dans les formules chimiques données Çl après, et revendiquées Sa couleur,
et ses hautes résistances physicochimiques sont consolidées par des métaux très précieux tels que l'or, et ou, le platine, ainsi que par des métaux ISSUS des terres rares, tout aussi précieux, de la famille des lanthanides, tel que le cérium.
Suivant une variante à l'invention, ces bronzes précieux à base de cuivre contiennent avantageusement des additifs, soit, 0,15 à 2% de chrome, 0, 45 à 4,25% de nickel, 0,2 à 3% de silicium, 0,005 à 0, 5 % de manganèse, pour accroître la résistance à la corresion/oxydation pour des applications le demandant.
Encore suivant l'invention, on peut aussi utiliser avantageusement des additions de 0,15 à 2% de chrome, 0,2 à 3% de silicium, de 0,005 à 0,5 % de manganèse, de 0,0005 à 5% d'or, et/ou de 0, 0005 à 1,25% de platine Ces deux métaux étant ensemble limités à 5% pour augmenter la résistance à la corrosionfoxydation, notamment au contact de la peau, tout en se mettant à l'abri des phénomènes d'allergies au nickel, que cette vanante ne content pas
<Desc/Clms Page number 3>
Encore suivant l'invention, on peut aussi utiliser avantageusement des additions de 0,005 à 2,1 % de béryllium, de 0,0025 à 1,0000% de cérium, de 0, 15 à 2% de chrome, de 0,005 à 3% de cobalt, de 0,005 à 4,2% de fer, de 0,45 à 4, 25%de nickel, de 0,2 à 3% de silicium,
pour augmenter à la fois la résistance mécanique et la résistance à la corrosion/oxydation Les limites d'analyses dosent être rigoureusement respectées notamment au niveau des quatre éléments pnnclpaux et des éléments précieux, pour conférer à l'alliage ses caractéristiques physlcochlmlques exceptionnelles Ces fourchettes d'analyses permettent de produire l'alliage, sans grandes difficultés par les méthodes traditionnelles de raffinage et de coulées à l'air, sous argon et sous vide, suivant les applications désirées La coulée à l'air nécessitant cependant certaines précautions Il peut aussi être mis en forme par extrusion, forgeage et laminage Sa résistance à l'oxydation est excellente A titre d'exemple,
après deux heures d'exposition dans l'air à 700 C, une augmentation de pods limitée à 0,015 mg/cm2 a été constatée
La résistance de cet alliage à la corrosion/oxydation est de loin supérieure à celles des alliages de cuivre et bronzes à l'aluminium et comparable, sinon meilleure à celle des aciers inoxydables
Des échantillons de l'alliage ont été exposés pendant plusieurs mois à l'atmosphère polluée d'une ville Industnelle Ces échantillons sont restés bnllants, sans trace de piqûres de corrosion ou de formation de composés colorés, que l'on rencontre dans d'autres alliages de cuivre
Ce comportement est confirmé par des essais d'immersion dans des solutions acqueuses ou dans un brouillard salin,
grâce notamment à l'utilisation des lanthanides Des échantillons soumis à l'action de sueur humaine synthétique ont montrés une résistance à l'oxydation/corrosion supérieure notamment à celle des laitons
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The present invention relates to a precious stainless bronze, with high performance, and of a color similar to GOLD, intended for advanced and luxury Industnes, the quality of which is high. resist corrosion and oxidation In the high-performance mechanical, luxury, chemical and food industries, different types of copper or bronze alloys are used for their tendency to resist corrosion and oxidation in aqueous media. copper-tin bronzes (Cu-Sn), and cupros-aluminum commonly called aluminum bronzes One of the best is the copper alloy containing 12.5% tin However,
their resistance to atmospheric corrosion in cities is low due to the rapid formation of colored oxides Incompatible with use in luxury industries such as goldsmithing, blJoutene, and or for decorative purposes in high temperature constructions, this deterioration is all the more rapid and detrimental to the mechanical and chemical characteristics. On the other hand, aluminum bronzes have the advantage of having a transparent alteration practically sealed by the formation of alumina, even at high temperature, but this layer has practically no resistance in acidic atmospheric environments, as we meet them today.
all these copper or bronze base alloys have a low resistance to corrosion resulting from the acidity of human sweat To compensate for this weakness They are usually the subject, in luxury Industnes, of an expensive gold plating of 8 microns, always ending up piercing through wear of this layer and protective varnish, which immediately opens the door to corrosion of the base metal
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The object of the present invention is to remedy these drawbacks of resistance to corrosion and to oxidation, while giving the claimed alloy a color comparable to that of gold, as well as high mechanical characteristics, similar to those of stainless steels,
therefore intended for luxury, mechanical and advanced industries, such as in particular in the fields of jewelry, construction, naval, aeronautics and space. The precious bronze, object of the present invention, is characterized by four main elements which give it its basic physicochemical and mechanical characteristics, reinforced by lanthanides It contains copper as the base metal, tin between 2.4 and 6.9%, aluminum between 6 , 5 and 13%, of yttrium between 0.0025 and 1.20%, as well as impurities normally encountered in such alloys, which are strictly limited in the chemical formulas given below, and claimed for its color,
and its high physicochemical resistances are consolidated by very precious metals such as gold, and or, platinum, as well as by ISSUS metals of rare earths, just as precious, of the lanthanide family, such as cerium.
According to a variant of the invention, these precious copper-based bronzes advantageously contain additives, namely, 0.15 to 2% of chromium, 0.45 to 4.25% of nickel, 0.2 to 3% of silicon , 0.005 to 0.5% of manganese, to increase the resistance to corresion / oxidation for applications requiring it.
Still according to the invention, it is also possible advantageously to use additions of 0.15 to 2% of chromium, 0.2 to 3% of silicon, of 0.005 to 0.5% of manganese, of 0.0005 to 5% of gold, and / or from 0. 0005 to 1.25% of platinum These two metals being together limited to 5% to increase the resistance to corrosion and oxidation, in particular in contact with the skin, while sheltering from phenomena of nickel allergies, which this vanante does not content
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Still according to the invention, additions of 0.005 to 2.1% of beryllium, of 0.0025 to 1.0000% of cerium, of 0.15 to 2% of chromium, of 0.005 to 3% can also be advantageously used. cobalt, from 0.005 to 4.2% of iron, from 0.45 to 4.25% of nickel, from 0.2 to 3% of silicon,
to increase both mechanical resistance and resistance to corrosion / oxidation The limits of analyzes must be strictly observed, in particular at the level of the four main elements and precious elements, to give the alloy its exceptional physical characteristics. analyzes allow the alloy to be produced without great difficulty by traditional methods of refining and air casting, under argon and vacuum, depending on the desired applications Air casting, however, requiring certain precautions It can also be shaped by extrusion, forging and rolling Its resistance to oxidation is excellent For example,
after two hours of exposure in air to 700 C, an increase in pods limited to 0.015 mg / cm2 was noted
The resistance of this alloy to corrosion / oxidation is far superior to that of copper alloys and bronzes to aluminum and comparable, if not better than that of stainless steels
Samples of the alloy were exposed for several months to the polluted atmosphere of an industrial city These samples remained bnllant, without trace of pitting of corrosion or formation of colored compounds, which one meets in other copper alloys
This behavior is confirmed by immersion tests in aqueous solutions or in a salt spray,
thanks in particular to the use of lanthanides Samples subjected to the action of synthetic human sweat showed a resistance to oxidation / corrosion superior in particular to that of brasses
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE9700481A BE1011190A6 (en) | 1997-06-04 | 1997-06-04 | Gold coloured stainless precious bronze with enhanced physico-chemical characteristics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE9700481A BE1011190A6 (en) | 1997-06-04 | 1997-06-04 | Gold coloured stainless precious bronze with enhanced physico-chemical characteristics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE1011190A6 true BE1011190A6 (en) | 1999-06-01 |
Family
ID=3890549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE9700481A BE1011190A6 (en) | 1997-06-04 | 1997-06-04 | Gold coloured stainless precious bronze with enhanced physico-chemical characteristics |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE1011190A6 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7041252B2 (en) * | 2002-02-28 | 2006-05-09 | Sandvik Intellectual Property Ab | Copper base alloy |
| WO2007042921A3 (en) * | 2005-10-10 | 2007-07-12 | Silmar Spa | Alloy for ornamental articles |
| WO2023161162A1 (en) * | 2022-02-25 | 2023-08-31 | Lothar Schmidt | Bronze alloy |
-
1997
- 1997-06-04 BE BE9700481A patent/BE1011190A6/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7041252B2 (en) * | 2002-02-28 | 2006-05-09 | Sandvik Intellectual Property Ab | Copper base alloy |
| WO2007042921A3 (en) * | 2005-10-10 | 2007-07-12 | Silmar Spa | Alloy for ornamental articles |
| WO2023161162A1 (en) * | 2022-02-25 | 2023-08-31 | Lothar Schmidt | Bronze alloy |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RE | Patent lapsed |
Owner name: MUCK DANIEL Effective date: 19990630 |