WO2013091738A1 - Münzrohling - Google Patents
Münzrohling Download PDFInfo
- Publication number
- WO2013091738A1 WO2013091738A1 PCT/EP2012/003261 EP2012003261W WO2013091738A1 WO 2013091738 A1 WO2013091738 A1 WO 2013091738A1 EP 2012003261 W EP2012003261 W EP 2012003261W WO 2013091738 A1 WO2013091738 A1 WO 2013091738A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- copper
- cover layer
- nickel
- layer
- coin
- Prior art date
Links
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 74
- 239000010949 copper Substances 0.000 claims abstract description 44
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 39
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 39
- 229910052802 copper Inorganic materials 0.000 claims abstract description 38
- 229910000881 Cu alloy Inorganic materials 0.000 claims abstract description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 229910016347 CuSn Inorganic materials 0.000 claims description 8
- 229910002535 CuZn Inorganic materials 0.000 claims description 8
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 claims description 4
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical class [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 229910001297 Zn alloy Inorganic materials 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000007669 thermal treatment Methods 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 23
- 239000010959 steel Substances 0.000 abstract description 23
- 241001311547 Patina Species 0.000 abstract description 2
- 230000007774 longterm Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 40
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 229910001369 Brass Inorganic materials 0.000 description 4
- 239000010951 brass Substances 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 229910000906 Bronze Inorganic materials 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- 239000002019 doping agent Substances 0.000 description 2
- 238000004049 embossing Methods 0.000 description 2
- 239000002932 luster Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000010003 thermal finishing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/48—After-treatment of electroplated surfaces
- C25D5/50—After-treatment of electroplated surfaces by heat-treatment
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- A44C21/00—Coins; Emergency money; Beer or gambling coins or tokens, or the like
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/38—Electroplating: Baths therefor from solutions of copper
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/56—Electroplating: Baths therefor from solutions of alloys
- C25D3/58—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of copper
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/10—Electroplating with more than one layer of the same or of different metals
- C25D5/12—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/60—Electroplating characterised by the structure or texture of the layers
- C25D5/623—Porosity of the layers
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/627—Electroplating characterised by the visual appearance of the layers, e.g. colour, brightness or mat appearance
Definitions
- the present invention relates to a coin blank having a core of a ferrous material, preferably of steel, with a cover layer of copper and / or of a copper alloy.
- Coin blanks or coin blanks and coins embossed therefrom whose core consists of steel and which are coated on the surface with a cover layer of a non-ferrous metal, are known and widely used.
- the galvanic coating of the steel blanks has generally prevailed for manufacturing and economic reasons.
- the coating of coin blanks or Münzronden steel with copper or copper alloy serves both the corrosion protection of the highly corrosion-prone steel core and the coloring of the nominal, for example, by galvanic cover layers of copper or a copper alloy, such as brass.
- a well-known example are the currently in circulation coins of 1-, 2- and 5-Euiocents, which have a core made of steel, which is electroplated copper.
- the copper layer usually has a thickness of 20 ⁇ to greater than 30 ⁇ .
- DE 41 20 291 also discloses a blank for a coin which has a two-layer or multi-layer galvanic coating of the steel core with nickel, copper and nickel as the outer layer, the coating thickness being 1% Ni, 4-7, based on the weight of the blank % Cu and 1 -1.5% Ni. This corresponds to a layer thickness of greater than 10 ⁇ the individual layers.
- circulating coins are those having a steel core with a copper-colored electroplated topcoat.
- both the special color of the coin is achieved as the corrosion protection of the steel core sought.
- copper layer has the disadvantage that in constant use of the coin in circulation forms a dull patina, which relatively quickly lost the original luster of the copper surface of the coin. It also changes the color seriously from the original copper red to an unsightly reddish brown.
- galvanic cover layers which relate to a copper alloy, such as CuZn or CuSn. These surfaces lose their luster and their original golden color.
- the object of the invention is to provide a coin blank with a core of an iron material, in particular of steel, which is provided with a cover layer of copper or of a copper alloy, said cover layer sufficiently long in the continuous use of the coin embossed therefrom the original color shade of the copper or the copper alloy and its gloss retains and thus has a high tarnish resistance.
- the invention further relates to an article having a surface layer of copper or a copper alloy and a nickel doping in the surface layer.
- a coin blank comprising a steel core and provided with a cover layer of copper or a copper alloy is surface-doped with a wafer-thin nickel layer.
- the cover layer can be applied galvanically.
- the doping with nickel can be carried out by electrochemical or physical application of a nickel layer. It has been found that both the intense color of the copper layer is retained by the nickel doping and the gloss of a circulating coin, which was coined from the coin blank according to the invention, is not lost in continuous use.
- the nickel-doped coin blotter according to the present invention enables the embossing of circulating coins having a steel core which is electroplated with copper and / or a copper alloy in a new quality of coins. These coins ensure a lasting gloss and color consistency of the respective cover layer made of copper, brass (CuZn) or bronze (CuSn) or color-analog copper alloys, such as aluminum bronze (CuAl).
- the solution according to the invention also does not exclude blanks for commemorative embossing, medals and similar special cases of a galvanic coating.
- FIG. 1 shows the cross-section through a coin blank made of steel according to the invention with a galvanic copper layer as cover layer with nickel doping
- the coin blank comprises a core (1) made of a ferrous material, for example a low-alloy steel, such as, for example, DC04 steel according to the European standard.
- a core (1) made of a ferrous material, for example a low-alloy steel, such as, for example, DC04 steel according to the European standard.
- This is covered pore-free with a galvanic copper layer (2) with the usual thicknesses in the range of 1 ⁇ to 30 ⁇ .
- On this cover layer of copper (2) is applied a wafer-thin, from 0.5 ⁇ to 3 ⁇ thick layer of nickel, by a thermal finishing treatment of the coin blank in a protective atmosphere in the form of a dopant (3) in the surface of the cover layer (2 ), causing both the permanent A
- the nickel doping is at the surface of the copper layer 1 to 10 mass%, for example 2% by mass based on copper in the surface region and runs with degressive concentration gradient to zero within the copper layer. If the concentration of nickel on the surface is larger than 10 mass%, the color of the coin blank changes. When the concentration of nickel is lower than 1 mass%, the tarnish resistance of the coin blank deteriorates.
- Fig. 2 shows the cross section through a Münzronde invention made of steel with a galvanic layer combination of copper as an intermediate layer and copper-zinc (brass) as a cover layer with nickel doping
- Fig. 3 shows the concentration profile of the nickel doping over the cross section of a Münzronde with a galvanic cover layer of copper according to FIG l.
- the galvanic cover layer has, for example, a layer thickness of 30 ⁇ , which is applied to the core (1) made of iron material.
- the cover layer (2) contains a nickel dopant (3).
- the nickel doping (3) has a concentration of about 2% by mass. The concentration decreases with increasing distance from the surface.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating Methods And Accessories (AREA)
- Adornments (AREA)
- Laminated Bodies (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12742809.2A EP2794963B1 (de) | 2011-12-22 | 2012-07-31 | Münzrohling |
CA2858875A CA2858875A1 (en) | 2011-12-22 | 2012-07-31 | Coin blank |
RU2014124532A RU2014124532A (ru) | 2011-12-22 | 2012-07-31 | Заготовка монеты |
ZA2014/04211A ZA201404211B (en) | 2011-12-22 | 2014-06-09 | Coin blank |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011121952.1 | 2011-12-22 | ||
DE102011121952A DE102011121952A1 (de) | 2011-12-22 | 2011-12-22 | Galvanisch beschichtete Münzronde |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013091738A1 true WO2013091738A1 (de) | 2013-06-27 |
Family
ID=46603883
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2012/003261 WO2013091738A1 (de) | 2011-12-22 | 2012-07-31 | Münzrohling |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP2794963B1 (de) |
CA (1) | CA2858875A1 (de) |
CL (1) | CL2014001636A1 (de) |
DE (1) | DE102011121952A1 (de) |
RU (1) | RU2014124532A (de) |
WO (1) | WO2013091738A1 (de) |
ZA (1) | ZA201404211B (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
MX2016008253A (es) * | 2013-12-20 | 2016-10-14 | Jarden Zinc Products Llc | Aleaciones de zinc niquelado para acuñacion. |
CN107299369B (zh) * | 2016-04-15 | 2019-08-20 | 南京造币有限公司 | 一种表面包覆铜镍合金硬币类产品及其制造方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2932229A1 (de) | 1978-10-31 | 1980-05-14 | Sherritt Gordon Mines Ltd | Verfahren zur herstellung von muenzenrohlingen |
EP0033625A1 (de) * | 1980-01-25 | 1981-08-12 | Inco Research & Development Center, Inc. | Metallischer Mehrschichtwerkstoff, Verfahren zu seiner Herstellung und daraus hergestellte Münzen |
DE3940244A1 (de) * | 1989-12-05 | 1991-06-06 | Ver Deutsche Nickel Werke Ag V | Muenzrohling und verfahren zu dessen herstellung |
DE4120291A1 (de) | 1990-06-21 | 1992-01-09 | Canadian Mint | Plattierter rohling fuer muenzen und dergleichen und verfahren zu seiner herstellung |
WO2006138033A2 (en) * | 2005-06-17 | 2006-12-28 | Jarden Zinc Products, Inc | Substrate with alloy finish and method of making |
-
2011
- 2011-12-22 DE DE102011121952A patent/DE102011121952A1/de not_active Ceased
-
2012
- 2012-07-31 RU RU2014124532A patent/RU2014124532A/ru not_active Application Discontinuation
- 2012-07-31 CA CA2858875A patent/CA2858875A1/en not_active Abandoned
- 2012-07-31 WO PCT/EP2012/003261 patent/WO2013091738A1/de active Application Filing
- 2012-07-31 EP EP12742809.2A patent/EP2794963B1/de active Active
-
2014
- 2014-06-09 ZA ZA2014/04211A patent/ZA201404211B/en unknown
- 2014-06-19 CL CL2014001636A patent/CL2014001636A1/es unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2932229A1 (de) | 1978-10-31 | 1980-05-14 | Sherritt Gordon Mines Ltd | Verfahren zur herstellung von muenzenrohlingen |
EP0033625A1 (de) * | 1980-01-25 | 1981-08-12 | Inco Research & Development Center, Inc. | Metallischer Mehrschichtwerkstoff, Verfahren zu seiner Herstellung und daraus hergestellte Münzen |
DE3940244A1 (de) * | 1989-12-05 | 1991-06-06 | Ver Deutsche Nickel Werke Ag V | Muenzrohling und verfahren zu dessen herstellung |
DE4120291A1 (de) | 1990-06-21 | 1992-01-09 | Canadian Mint | Plattierter rohling fuer muenzen und dergleichen und verfahren zu seiner herstellung |
WO2006138033A2 (en) * | 2005-06-17 | 2006-12-28 | Jarden Zinc Products, Inc | Substrate with alloy finish and method of making |
Also Published As
Publication number | Publication date |
---|---|
RU2014124532A (ru) | 2016-02-10 |
DE102011121952A1 (de) | 2013-06-27 |
CA2858875A1 (en) | 2013-06-27 |
EP2794963A1 (de) | 2014-10-29 |
ZA201404211B (en) | 2015-11-25 |
EP2794963B1 (de) | 2016-03-09 |
CL2014001636A1 (es) | 2015-01-23 |
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