DE1120238B - Process for the galvanic deposition of a gold-silver alloy of particular hardness with a shiny surface - Google Patents
Process for the galvanic deposition of a gold-silver alloy of particular hardness with a shiny surfaceInfo
- Publication number
- DE1120238B DE1120238B DES69592A DES0069592A DE1120238B DE 1120238 B DE1120238 B DE 1120238B DE S69592 A DES69592 A DE S69592A DE S0069592 A DES0069592 A DE S0069592A DE 1120238 B DE1120238 B DE 1120238B
- Authority
- DE
- Germany
- Prior art keywords
- gold
- bath
- shiny surface
- cyanide
- potassium
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 8
- 229910001316 Ag alloy Inorganic materials 0.000 title claims description 4
- PQTCMBYFWMFIGM-UHFFFAOYSA-N gold silver Chemical compound [Ag].[Au] PQTCMBYFWMFIGM-UHFFFAOYSA-N 0.000 title claims description 4
- 230000008021 deposition Effects 0.000 title claims description 3
- NNFCIKHAZHQZJG-UHFFFAOYSA-N potassium cyanide Chemical compound [K+].N#[C-] NNFCIKHAZHQZJG-UHFFFAOYSA-N 0.000 claims description 4
- HKSGQTYSSZOJOA-UHFFFAOYSA-N potassium argentocyanide Chemical compound [K+].[Ag+].N#[C-].N#[C-] HKSGQTYSSZOJOA-UHFFFAOYSA-N 0.000 claims description 3
- XTFKWYDMKGAZKK-UHFFFAOYSA-N potassium;gold(1+);dicyanide Chemical compound [K+].[Au+].N#[C-].N#[C-] XTFKWYDMKGAZKK-UHFFFAOYSA-N 0.000 claims description 3
- 229910001020 Au alloy Inorganic materials 0.000 claims description 2
- 239000003353 gold alloy Substances 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 238000000151 deposition Methods 0.000 claims 1
- 238000004070 electrodeposition Methods 0.000 claims 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- ZLMJMSJWJFRBEC-LZFNBGRKSA-N Potassium-45 Chemical compound [45K] ZLMJMSJWJFRBEC-LZFNBGRKSA-N 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/56—Electroplating: Baths therefor from solutions of alloys
-
- 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
- C25D3/04—Electroplating: Baths therefor from solutions of chromium
- C25D3/10—Electroplating: Baths therefor from solutions of chromium characterised by the organic bath constituents used
-
- 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
- C25D3/62—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of gold
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating And Plating Baths Therefor (AREA)
Description
In der Patentanmeldung S 37559 VIb/48 a (deutsche Auslegeschrift 1 055 315) ist ein Verfahren zur galvanischen Abscheidung einer Gold-Silber-Legierung von besonderer Härte mit glänzender Oberfläche aus einem Kaliumgoldcyanid, freies Kaliumcyanid und Kaliumsilbercyanid enthaltenden Bad beschrieben. Das Verfahren besteht darin, daß in dem Bad 6 bis 48 g/l Kaliumgoldcyanid, 45 bis 200 g/l Kaliumcyanid und Kaliumsilbercyanid in einer solchen Menge vorhanden sind, daß die abgeschiedene Goldlegierung ίο mehr als l°/o Silber enthält und das Bad mit einer kathodischen Stromdichte von etwa 0,32 bis 0,64 Amp/dm2 und einer Temperatur unterhalb 21° C betrieben wird.In the patent application S 37559 VIb / 48 a (German Auslegeschrift 1 055 315) is a method for galvanic Deposition of a gold-silver alloy of particular hardness with a shiny surface a bath containing potassium gold cyanide, free potassium cyanide and potassium silver cyanide. The method consists in adding 6 to 48 g / l of potassium gold cyanide and 45 to 200 g / l of potassium cyanide in the bath and potassium silver cyanide are present in such an amount that the deposited gold alloy ίο contains more than 1% silver and the bath with a cathodic current density of about 0.32 to 0.64 Amp / dm2 and a temperature below 21 ° C.
Es hat sich nun gezeigt, daß es zweckmäßig sein kann, die Bäder auch bei etwas höheren Temperaturen zu verwenden. Bei Temperaturen bis zu 50° C werden nämlich ebenfalls Goldniederschläge mit einer glänzenden Oberfläche erhalten. Als allgemeine Richtlinie kann man ferner sagen, daß mit höherer ao Konzentration der Metallionen ein intensiveres Rühren und eine höhere Stromdichte notwendig werden. Mit steigenden Temperaturen wird die Zeit, innerhalb der das zu galvanisierende Material im Bad verbleiben muß, etwas kürzer. Andererseits kann die Stromdichte in den erwärmten Bädern erhöht werden, wodurch man in kürzerer Zeit dickere Niederschläge erhält. Für die Durchführung des vorliegenden Verfahrens haben sich Stromdichten bis zu 5,0 Amp/dm2 als zweckmäßig erwiesen.It has now been shown that it can be useful to use the baths at somewhat higher temperatures. This is because gold deposits with a shiny surface are also obtained at temperatures of up to 50 ° C. As a general guideline, it can also be said that the higher the concentration of metal ions, more intensive stirring and higher current density are necessary. With increasing temperatures, the time within which the material to be electroplated must remain in the bath becomes somewhat shorter. On the other hand, the current density in the heated baths can be increased, whereby thicker deposits are obtained in a shorter time. Current densities of up to 5.0 Amp / dm 2 have proven to be expedient for carrying out the present process.
Als Beispiel für ein bei höheren Temperaturen betriebenes Bad kann die folgende Zubereitung dienen:The following preparation can serve as an example of a bath operated at higher temperatures:
Freies KCN 45 bis 200 g/lFree KCN 45 to 200 g / l
KAu(CN)2 30 bis 48 g/lKAu (CN) 2 30 to 48 g / l
KAg (CN)2 0,08 bis 4 g/lKAg (CN) 2 0.08 to 4 g / l
Mit Wasser aufgefüllt auf 11Topped up with water to 11
Dieses Bad kann bei einer Temperatur von 50° C und einer Stromdichte von 5,0 Amp/dm2 betrieben werden. Man erhält innerhalb von 10 Minuten Goldniederschläge mit einer Dicke von 25 μ. Der entstandene Niederschlag ist spiegelglänzend.This bath can be operated at a temperature of 50 ° C. and a current density of 5.0 amps / dm 2 . Gold deposits with a thickness of 25 μ are obtained within 10 minutes. The resulting precipitate is mirror-like.
Bei Temperaturen zwischen 21 und 50° C können Stromdichten eines Zwischenwertes verwendet werden. Die Temperatur von 50° C liegt unter der üblichen Arbeitstemperatur der bekannten galvanischen Verfahren zur galvanischen AbscheidungAt temperatures between 21 and 50 ° C, current densities of an intermediate value can be used. The temperature of 50 ° C is below the usual working temperature of the known galvanic Electroplating process
einer Gold-Silber-Legierung von besonderer Härte mit glänzender Oberflächea gold-silver alloy of particular hardness with a shiny surface
Zusatz zur Patentanmeldung S 37559 VIb/48 a
(Auslegeschrift 1055 315)Addition to patent application S 37559 VIb / 48 a
(Interpretation document 1055 315)
Anmelder:
Sel-Rex Corporation, Nutley, N. J. (V. St. A.)Applicant:
Sel-Rex Corporation, Nutley, NJ (V. St. A.)
Vertreter: Dr.-Ing. F. Wuesthoff, Dipl.-Ing. G. Puls und Dipl.-Chem. Dr. rer. nat. E. Frhr. v. Pechmann, Patentanwälte, München 9, Schweigerstr. 2Representative: Dr.-Ing. F. Wuesthoff, Dipl.-Ing. G. Pulse and Dipl.-Chem. Dr. rer. nat. E. Frhr. v. Pechmann, patent attorneys, Munich 9, Schweigerstr. 2
Edwin Cornell Rinker, Morristown, N. J. (V. St. A.), ist als Erfinder genannt wordenEdwin Cornell Rinker of Morristown, N.J. (V. St. A.) has been named as the inventor
Bäder zur Abscheidung von Goldlegierungen, die etwa bei 60 bis 65° C betrieben werden.Baths for the deposition of gold alloys, which are operated at around 60 to 65 ° C.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES69592A DE1120238B (en) | 1953-04-01 | 1960-07-25 | Process for the galvanic deposition of a gold-silver alloy of particular hardness with a shiny surface |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US759181XA | 1953-04-01 | 1953-04-01 | |
| DES69592A DE1120238B (en) | 1953-04-01 | 1960-07-25 | Process for the galvanic deposition of a gold-silver alloy of particular hardness with a shiny surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1120238B true DE1120238B (en) | 1961-12-21 |
Family
ID=31981858
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DES37559A Pending DE1055315B (en) | 1953-04-01 | 1954-02-10 | Process and bath for the electrodeposition of a gold-silver alloy |
| DES61138A Pending DE1089612B (en) | 1953-04-01 | 1958-12-23 | Bath for the galvanic deposition of a gold-silver alloy |
| DES69592A Pending DE1120238B (en) | 1953-04-01 | 1960-07-25 | Process for the galvanic deposition of a gold-silver alloy of particular hardness with a shiny surface |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DES37559A Pending DE1055315B (en) | 1953-04-01 | 1954-02-10 | Process and bath for the electrodeposition of a gold-silver alloy |
| DES61138A Pending DE1089612B (en) | 1953-04-01 | 1958-12-23 | Bath for the galvanic deposition of a gold-silver alloy |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH326573A (en) |
| DE (3) | DE1055315B (en) |
| FR (1) | FR1097665A (en) |
| GB (1) | GB759181A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL277803A (en) * | 1961-05-01 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE743955C (en) * | 1940-09-21 | 1944-01-06 | Dr Max Hischmann | Process for the production of gold and gold alloy deposits from permanent baths by means of electrical current |
| DE801312C (en) * | 1949-05-05 | 1950-11-23 | Pforzheimer Elektrizitäts - Gesellschaft m. b. H., Pforzheim | Process for the electrolytic deposition of gold and gold alloys |
-
1953
- 1953-12-29 GB GB36038/53A patent/GB759181A/en not_active Expired
-
1954
- 1954-02-02 FR FR1097665D patent/FR1097665A/en not_active Expired
- 1954-02-10 DE DES37559A patent/DE1055315B/en active Pending
- 1954-02-20 CH CH326573D patent/CH326573A/en unknown
-
1958
- 1958-12-23 DE DES61138A patent/DE1089612B/en active Pending
-
1960
- 1960-07-25 DE DES69592A patent/DE1120238B/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1089612B (en) | 1960-09-22 |
| GB759181A (en) | 1956-10-17 |
| DE1055315B (en) | 1959-04-16 |
| FR1097665A (en) | 1955-07-08 |
| CH326573A (en) | 1957-12-31 |
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