DE2328243A1 - Palladium-nickel alloy electrodeposition - from an electrolyte containing a palladium and nickel salt and a brightener - Google Patents
Palladium-nickel alloy electrodeposition - from an electrolyte containing a palladium and nickel salt and a brightenerInfo
- Publication number
- DE2328243A1 DE2328243A1 DE19732328243 DE2328243A DE2328243A1 DE 2328243 A1 DE2328243 A1 DE 2328243A1 DE 19732328243 DE19732328243 DE 19732328243 DE 2328243 A DE2328243 A DE 2328243A DE 2328243 A1 DE2328243 A1 DE 2328243A1
- Authority
- DE
- Germany
- Prior art keywords
- palladium
- bath
- nickel
- brightener
- electrolyte containing
- 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
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 title claims description 27
- 229910052763 palladium Inorganic materials 0.000 title claims description 13
- 239000003792 electrolyte Substances 0.000 title abstract description 3
- 229910000990 Ni alloy Inorganic materials 0.000 title description 2
- 150000002815 nickel Chemical class 0.000 title description 2
- 238000004070 electrodeposition Methods 0.000 title 1
- 239000000080 wetting agent Substances 0.000 claims abstract description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000000151 deposition Methods 0.000 claims description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims description 2
- 230000008021 deposition Effects 0.000 claims description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims 4
- 229910052759 nickel Inorganic materials 0.000 claims 2
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract 2
- 239000002659 electrodeposit Substances 0.000 abstract 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-N sulfonic acid Chemical compound OS(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-N 0.000 abstract 1
- 229910001369 Brass Inorganic materials 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound 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
- C25D3/567—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of platinum group metals
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)
Abstract
Description
Galvanisches Palladiumbad Die Erfindung bezieht sich auf ein galvanisches Palladiumbad zum Abscheiden technischer und dekorativer Oberzüge. Galvanic palladium bath The invention relates to a galvanic bath Palladium bath for the deposition of technical and decorative coatings.
Bäder dieser Art, so z.B. auch ein im alkalischen Bereich betriebenes galvanisches Palladiumbad (A. M. Yampolsky -Precious Metal Deposition; Mashgiz, Moscow 1961, zitiert in Electroplating and Metal Finishing, 1963, 16, Nr. 3, S. 76-79) sind seit langem bekannt.Baths of this type, e.g. also one operated in the alkaline range galvanic palladium bath (A. M. Yampolsky -Precious Metal Deposition; Mashgiz, Moscow 1961, cited in Electroplating and Metal Finishing, 1963, 16, No. 3, pp. 76-79) have been known for a long time.
Die mit solchen oder vergleichbaren Bädern erzielten Palladiumschichten besitzen jedoch'die Nachteile, daß sie einesteils porös, andererseits schon bei niedrigen Schichtdicken nicht mehr hochglänzend sind. Zudem liegt die durchschnittliche Vickershärte von Palladiumniederschlägen nur bei 300-400 (Fischer-Weimer; Precious Metal Plating 1964 S. 213).The palladium layers obtained with such or comparable baths However, they have the disadvantages that they are on the one hand porous and on the other hand already at low layer thicknesses are no longer high-gloss. In addition, the average Vickers hardness of palladium deposits only at 300-400 (Fischer-Weimer; Precious Metal Plating 1964 p. 213).
Der Erfindung liegt die Aufgabe zugrunde, unter Vermeidung der vorgenannten Nachteile ein Palladiumbad üblicher Art so weiterzubilden, daß sich die gute Xorrosionsbest&ndigkeit des Palladiums mit der Erzeugung einwandfrei duktiler Niederschläge großer Dicke mit Uberlegener Harte verbindet, wobei Hochglanz bis zu 10 Mikron erzielbar ist.The invention is based on the object while avoiding the aforementioned Disadvantages of developing a palladium bath of the usual type in such a way that the good resistance to corrosion is maintained of Palladium with the production of perfectly ductile deposits of great thickness with Superior hardness connects, with a high gloss of up to 10 microns being achievable.
In Lösung dieser Aufgabe ergab sich Uberraschenderweise, daß aus einem Palladiumbad, das Nickelsalze enthält, eine Palladium-Nickel-Legierung abscheidbar -ist, welche die erwUnschten Eigenscharten des Niederschlages zu erzielen erlaubt; außerdem besitzt ein solcher Elektrolyt eine gegenüber den Ublichen Palladiumbädern weit bessere Streufähigkeit.In solving this problem, it was surprisingly found that from one Palladium bath containing nickel salts, a palladium-nickel alloy can be deposited -is that allows to achieve the desired characteristics of the precipitation; In addition, such an electrolyte has one compared to the usual palladium baths far better throwing power.
Nachstehend wird ein signifikantes Beispiel einer Badzusammensetzung wiedergegeben: 4 Liter Lösung A enthaltend 228 g NiCl2 ' 6 H20 100 g NH4 C1 240 ml NH4 OH (25X) und 4 Liter Lösung B enthaltend 200 g Pd Cl2 w 2H20 250 ml HCl 1:1 (halb konz.) 440 ml Nfl4 OH (25) werden zusammengemischt und mit destilliertem Wasser auf 10 Liter aufgefUllt; diese werden mit verd. Salzsäure oder verd. Ammoniakldsung auf einen pH-Wert Xvon 8,0 bis 8,5 eingestellt, falls notwendig.The following is a significant example of a bath composition reproduced: 4 liters of solution A containing 228 g NiCl2 '6 H20 100 g NH4 C1 240 ml NH4 OH (25X) and 4 liters of solution B containing 200 g Pd Cl2 w 2H20 250 ml HCl 1: 1 (half conc.) 440 ml Nfl4 OH (25) are mixed together and washed with distilled water made up to 10 liters; these are made with dilute hydrochloric acid or dilute ammonia solution adjusted to pH X from 8.0 to 8.5 if necessary.
Aus diesem Bad wird unter Verwendung platinierter Titananoden, deren Oberfläche zur Ware sich wie ca. 3:1 verhElt, auf einem einige Minuten in alkalischer Bichromat-Lösung getauchten Messingblech ein Niederschlag erzeuet, wobei die Temperatur des Bades 30° C, die kathodische Stromdichte 1 Amp/dm2 und die Verweildauer 15 Minuten beträgt.This bath is made using platinum-coated titanium anodes, whose Surface to the goods behaves as approx. 3: 1, for a few minutes more alkaline Bichromate solution immersed brass plate creates a precipitate, with the temperature of the bath 30 ° C, the cathodic current density 1 Amp / dm2 and the residence time 15 minutes amounts to.
Die Abscheidung wird durch die Gegenwart eines Glanzbildners in Gestalt einer Sulfonsäure sowie eines nichtionogenen Netzmittels wesentlich begünstigt.The deposit is shaped by the presence of a brightener a sulfonic acid and a nonionic wetting agent are significantly favored.
Nach Beendigung der Behandlung kann von dem an den Kanten beschnittenen Messingblech infolge der obengenannten (lediglich zu Demonstrationszwecken vorgenommenen) Präparation eine glänzende Folie abgezogen werden, welche eine.After finishing the treatment, the edges can be trimmed Brass sheet as a result of the above (made for demonstration purposes only) Preparation a glossy film can be peeled off, which a.
hohe Duktilität, eine Härte nach Vickers von 550 und einen Feingehalt von ca. 700 Tausendteilen Palladium aufweist.high ductility, a Vickers hardness of 550 and a fineness of about 700 thousand parts of palladium.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19732328243 DE2328243A1 (en) | 1973-06-02 | 1973-06-02 | Palladium-nickel alloy electrodeposition - from an electrolyte containing a palladium and nickel salt and a brightener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19732328243 DE2328243A1 (en) | 1973-06-02 | 1973-06-02 | Palladium-nickel alloy electrodeposition - from an electrolyte containing a palladium and nickel salt and a brightener |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2328243A1 true DE2328243A1 (en) | 1974-12-12 |
| DE2328243B2 DE2328243B2 (en) | 1975-04-10 |
Family
ID=5882926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19732328243 Pending DE2328243A1 (en) | 1973-06-02 | 1973-06-02 | Palladium-nickel alloy electrodeposition - from an electrolyte containing a palladium and nickel salt and a brightener |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE2328243A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4100039A (en) * | 1976-11-11 | 1978-07-11 | International Business Machines Corporation | Method for plating palladium-nickel alloy |
-
1973
- 1973-06-02 DE DE19732328243 patent/DE2328243A1/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4100039A (en) * | 1976-11-11 | 1978-07-11 | International Business Machines Corporation | Method for plating palladium-nickel alloy |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2328243B2 (en) | 1975-04-10 |
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