DE19920394A1 - Alloy coating of gray cast iron - Google Patents
Alloy coating of gray cast ironInfo
- Publication number
- DE19920394A1 DE19920394A1 DE19920394A DE19920394A DE19920394A1 DE 19920394 A1 DE19920394 A1 DE 19920394A1 DE 19920394 A DE19920394 A DE 19920394A DE 19920394 A DE19920394 A DE 19920394A DE 19920394 A1 DE19920394 A1 DE 19920394A1
- Authority
- DE
- Germany
- Prior art keywords
- bath
- coating
- nickel
- zinc
- bath according
- 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.)
- Withdrawn
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 18
- 239000011248 coating agent Substances 0.000 title claims abstract description 17
- 229910045601 alloy Inorganic materials 0.000 title description 4
- 239000000956 alloy Substances 0.000 title description 4
- 229910001060 Gray iron Inorganic materials 0.000 title description 3
- 229920002873 Polyethylenimine Polymers 0.000 claims abstract description 7
- 229960003237 betaine Drugs 0.000 claims abstract description 5
- 238000009713 electroplating Methods 0.000 claims abstract description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 22
- 238000005266 casting Methods 0.000 claims description 12
- 229910052759 nickel Inorganic materials 0.000 claims description 11
- 239000011701 zinc Substances 0.000 claims description 9
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 8
- 229910052725 zinc Inorganic materials 0.000 claims description 8
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 claims description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- 238000005238 degreasing Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 claims description 6
- 229950004580 benzyl nicotinate Drugs 0.000 claims description 4
- FAGUFWYHJQFNRV-UHFFFAOYSA-N tetraethylenepentamine Chemical compound NCCNCCNCCNCCN FAGUFWYHJQFNRV-UHFFFAOYSA-N 0.000 claims description 4
- 239000003792 electrolyte Substances 0.000 claims description 3
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 claims description 2
- LSHROXHEILXKHM-UHFFFAOYSA-N n'-[2-[2-[2-(2-aminoethylamino)ethylamino]ethylamino]ethyl]ethane-1,2-diamine Chemical compound NCCNCCNCCNCCNCCN LSHROXHEILXKHM-UHFFFAOYSA-N 0.000 claims description 2
- 229960001124 trientine Drugs 0.000 claims description 2
- KWIUHFFTVRNATP-UHFFFAOYSA-O N,N,N-trimethylglycinium Chemical compound C[N+](C)(C)CC(O)=O KWIUHFFTVRNATP-UHFFFAOYSA-O 0.000 claims 1
- 239000000654 additive Substances 0.000 claims 1
- 230000000996 additive effect Effects 0.000 claims 1
- 239000012528 membrane Substances 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000009826 distribution Methods 0.000 description 4
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 229910000990 Ni alloy Inorganic materials 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 238000010668 complexation reaction Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- UPCIBFUJJLCOQG-UHFFFAOYSA-L ethyl-[2-[2-[ethyl(dimethyl)azaniumyl]ethyl-methylamino]ethyl]-dimethylazanium;dibromide Chemical compound [Br-].[Br-].CC[N+](C)(C)CCN(C)CC[N+](C)(C)CC UPCIBFUJJLCOQG-UHFFFAOYSA-L 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000003014 ion exchange membrane Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000002815 nickel Chemical class 0.000 description 1
- XIKYYQJBTPYKSG-UHFFFAOYSA-N nickel Chemical compound [Ni].[Ni] XIKYYQJBTPYKSG-UHFFFAOYSA-N 0.000 description 1
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 description 1
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 description 1
- KERTUBUCQCSNJU-UHFFFAOYSA-L nickel(2+);disulfamate Chemical compound [Ni+2].NS([O-])(=O)=O.NS([O-])(=O)=O KERTUBUCQCSNJU-UHFFFAOYSA-L 0.000 description 1
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- IIACRCGMVDHOTQ-UHFFFAOYSA-M sulfamate Chemical compound NS([O-])(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-M 0.000 description 1
- 150000003751 zinc Chemical class 0.000 description 1
- 239000011787 zinc oxide Substances 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
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
-
- 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
- C25D3/562—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of iron or nickel or cobalt
-
- 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
- C25D3/565—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of zinc
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)
- Compositions Of Macromolecular Compounds (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Physical Vapour Deposition (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
Description
Die Erfindung betrifft eine galvanotechnische Beschichtung von Gußteilen, insbesondere Graugußteilen.The invention relates to a galvanotechnical coating of castings, especially gray cast iron parts.
Zur Oberflächenbehandlung, insbesondere als Korrosionsschutz werden Gußteile mit verschiedenen Legierungen, wie beispielsweise einer Zink- Nickel-Legierung galvanotechnisch beschichtet. Die Direktbeschichtung des Gußkörpers findet im Stande der Technik ausschließlich im sauren Bereich statt. Versuche mit alkalischen Bädern haben gezeigt, daß sich keine befrie digende Metallabscheidung auf der Graugußoberfläche erreichen läßt.For surface treatment, especially as corrosion protection Castings with different alloys, such as a zinc Nickel alloy electroplated. The direct coating of the Castings are found in the prior art exclusively in the acidic range instead of. Experiments with alkaline baths have shown that none freeze digig metal deposit on the gray cast iron surface.
Saure Zink-Nickel-Legierungs-Elektroplattierungsverfahren arbeiten mit sau rem Elektrolytbad wie Sulfatbad, Chloridbad, Acetatbad oder Sulfamatbad. Ein solches Bad ist in der japanischen Offenlegungsschrift 58-39236 beschrieben. Nachteilig bei derartigen sauren Bädern ist die schlechtere Metallverteilung und die starke Korrosionswirkung des Elektrolyten auf die galvanische Anlage und das Umfeld.Acid zinc-nickel alloy electroplating processes work with sau Rem electrolytic bath such as sulfate bath, chloride bath, acetate bath or sulfamate bath. Such a bath is in Japanese Patent Laid-Open No. 58-39236 described. The disadvantage of such acid baths is the poorer Metal distribution and the strong corrosion effect of the electrolyte on the galvanic system and the environment.
Zwar sind auch verschiedene alkalische Beschichtungssysteme bekannt, wie beispielsweise in der US-Patentschrift 3 681 211, der deutschen Offenle gungsschrift 37 12 511 oder in der US-Patentschrift 4 222 829 beschrieben, doch hat sich in der Praxis gezeigt, daß sich solche Bäder nicht für die Beschichtung von Gußteilen einsetzen lassen, da keine ausreichende Metallabscheidung stattfindet.Various alkaline coating systems are also known, such as for example in U.S. Patent 3,681,211, German Offenle 37 12 511 or in US Pat. No. 4,222,829, but it has been shown in practice that such baths are not suitable for Allow castings to be coated as they are not sufficient Metal deposition takes place.
Um alkalische Beschichtungssysteme dennoch nutzen zu können, ist es üblich, Gußteile zunächst im sauren Bad vorzuverzinken, um dann eine Legierungsschicht, wie beispielsweise Zink-Nickel im alkalischen Bereich, auf die Zinkzwischenschicht abzuscheiden.In order to still be able to use alkaline coating systems, it is It is customary to pre-galvanize castings first in an acid bath and then one Alloy layer, such as zinc-nickel in the alkaline range, to deposit on the intermediate zinc layer.
Der Erfindung liegt nun die Aufgabe zugrunde, ein galvanotechnisches Beschichtungsverfahren für Gußteile, insbesondere Graugußteile zu schaf fen, mit dem ein Direktauftrag einer galvanischen Schicht im alkalischen Bad möglich ist.The invention is based on the object, a galvanotechnical Coating process for castings, especially gray castings with which a direct application of a galvanic layer in the alkaline bath is possible.
Die Erfindung löst die Aufgabe mit einem System gemäß Anspruch 1.The invention solves the problem with a system according to claim 1.
Durch die Verwendung eines Bades mit N-Benzyl-nicotinat-betain in Verbin dung mit einem Polyethylenimin wird eine erhebliche Verbesserung der Beschichtungsqualität der Gußteile erreicht.By using a bath with N-benzyl nicotinate betaine in verbin with a polyethyleneimine will significantly improve the Coating quality of the castings reached.
Die Erfindung ermöglicht damit eine alkalische Direktbeschichtung von Gußteilen mit Zn, ZnFe; ZnNi, ZnCo, ZnSn, ZnMn oder ähnlichen Legierun gen.The invention thus enables an alkaline direct coating of Castings with Zn, ZnFe; ZnNi, ZnCo, ZnSn, ZnMn or similar alloy gene.
Insbesondere durch die Verwendung von N-Benzyl-nicotinat-betain in einer Größenordnung zwischen 0,01 bis 20 g/l ist eine Zink-Nickel-Schicht mit homogener Nickelverteilung auf dem Gußkörper möglich. Vorzugsweise wird als Komplexbildner Polyethylenimin und insbesondere Tetraethylenpentamin eingesetzt, um eine Komplexierung der Ionen im Bad zu erreichen. Ähnliche Ergebnisse lassen sich auch mit anderen Homologen, wie Triethylentetramin oder Pentaethylenhexamin erreichen.Especially through the use of N-benzyl nicotinate betaine in one A zinc-nickel layer is on the order of magnitude between 0.01 and 20 g / l homogeneous nickel distribution on the cast body possible. Preferably as a complexing agent polyethyleneimine and in particular tetraethylene pentamine used to achieve a complexation of the ions in the bath. Similar Results can also be seen with other homologs, such as triethylene tetramine or reach pentaethylene hexamine.
Das erfindungsgemäße Bad wird bevorzugt mit unlöslichen Nickelanoden betrieben.The bath according to the invention is preferably with insoluble nickel anodes operated.
Ferner ist es von besonderem Vorteil, wenn die Anode des Bades von dem alkalischen Elektrolyten getrennt ist. Dies kann beispielsweise mittels einer Ionenaustauschermembran verwirklicht werden. Eine entsprechende Vor richtung ist in der deutschen Offenlegungsschrift 198 34 353 beschrieben, die hiermit Bestandteil der vorliegenden Anmeldung wird. Mit Hilfe der Mem bran werden unerwünschte Nebenreaktionen, insbesondere eine Zyanidbil dung, vermieden. Das Vermeiden des Zyanids besitzt dabei nicht nur umwelttechnische Vorteile, sondern darüber hinaus auch eine Auswirkung auf die Leistungsfähigkeit des Bades, da eine Komplexierung von Zink/Nickel durch Zyanid vermieden wird und sich die übliche kompensie rende Nachgabe von Nickel erübrigt.Furthermore, it is particularly advantageous if the anode of the bath from the alkaline electrolyte is separated. This can be done, for example, using a Ion exchange membrane can be realized. A corresponding before direction is described in German Offenlegungsschrift 198 34 353, which hereby becomes part of the present application. With the help of the mem undesirable side reactions, especially a cyanide bil dung, avoided. Avoiding the cyanide is not only good environmental advantages, but also an impact on the performance of the bath, as a complexation of Zinc / nickel is avoided by cyanide and the usual compensation no need to give up nickel.
Die bei herkömmlichen Bädern zu beobachtende Wasserstoffbildung bei gleichzeitiger unzureichender Beschichtung wird in diesem Verfahren stark reduziert, was zu einer weiteren Qualitätserhöhung und einem besonders gleichmäßig beschichteten Gußkörper führt.The hydrogen formation observed in conventional baths At the same time, insufficient coating becomes strong in this process reduced, which leads to a further increase in quality and a special leads evenly coated cast body.
Im folgenden wird die Erfindung anhand eines Ausführungsbeispiels des näheren erläutert.The invention based on an embodiment of the explained in more detail.
Zunächst wird eine Vorbehandlung des Gußkörpers mit einem oder mehre
ren der folgenden Schritte durchgeführt, die die Qualität der Beschichtung
zusätzlich verbessern:
First, the cast body is pretreated with one or more of the following steps, which additionally improve the quality of the coating:
- 1. Ultraschall-Heißentfettung,1. Ultrasonic hot degreasing,
- 2. Heißentfettung,2. hot degreasing,
- 3. kathodischer Strom in der elektrolytischen Entfettung.3. Cathodic current in electrolytic degreasing.
Die daran anschließende Oberflächenbehandlung kann mit einem Bad der
folgenden Zusammensetzung durchgeführt werden:
The subsequent surface treatment can be carried out with a bath of the following composition:
Badtemperatur: 35 +/- 1°C
Anoden: Nickel
Nickel im Niederschlag: 12 bis 16% Nickel
Kathodische Stromdichte: 0,1 bis 8 A/dm2
Kathodische Stromausbeute: 40 bis 90%.Bath temperature: 35 +/- 1 ° C
Anodes: nickel
Nickel in the precipitation: 12 to 16% nickel
Cathodic current density: 0.1 to 8 A / dm 2
Cathodic current efficiency: 40 to 90%.
Das Aussehen und die Nickelverteilung in Abhängigkeit der Stromdichte ent sprechen einer technischen Beschichtung des Gußkörpers. Die Zugabe der Beschichtungsmetalle erfolgt durch Auflösen von Zink, Zinkoxid und/oder Zinksalze und Zugabe von Nickelsalzen, wie Nickelsulfat, Nickelsulfamat und/oder Nickelchlorid. Unter Verwendung von Tetraethylenpentamin wird eine Stromausbeute von 40 bis 90% je nach Zinkgehalt erreicht.The appearance and the nickel distribution depending on the current density ent speak a technical coating of the cast body. The addition of the Coating metals are made by dissolving zinc, zinc oxide and / or Zinc salts and addition of nickel salts such as nickel sulfate, nickel sulfamate and / or nickel chloride. Using tetraethylene pentamine achieves a current efficiency of 40 to 90% depending on the zinc content.
Durch die Zugabe von N-Benzyl-nicotinat-betain wird eine optisch anspruchsvolle Glanzwirkung bei homogener Nickelverteilung auf dem Guß körper erzielt.By adding N-benzyl nicotinate betaine, one becomes optical sophisticated gloss effect with homogeneous nickel distribution on the casting body achieved.
Das beschriebene Bad läßt sich als Trommel oder Gestellbad einsetzen. Bei einem besonders bevorzugten Galvanikbad wird mit einem Zink-Nickel-Ver hältnis von 5 : 1 bei beispielsweise 10 g/l Zink zu 2 g/l Nickel oder 4 g/l Zink zu 0,8 g/l Nickel gearbeitet. Die Zinkkonzentration sollte dabei 4 g/l nicht unter schreiten. Als bevorzugter Bereich der Verwendung von Tetraethylenpen tamin und/oder anderen homologen Polyethylenaminen wird eine Konzen tration von 4 bis 200 g/l gewählt. Die bevorzugte NaOH-Konzentration liegt zwischen 75 und 200 g/l.The bath described can be used as a drum or rack bath. At a particularly preferred electroplating bath with a zinc-nickel Ver Ratio of 5: 1 with, for example, 10 g / l zinc to 2 g / l nickel or 4 g / l zinc 0.8 g / l nickel worked. The zinc concentration should not be below 4 g / l stride. As a preferred area of use of tetraethylene pen tamin and / or other homologous polyethylene amines becomes a concent tration from 4 to 200 g / l selected. The preferred NaOH concentration is between 75 and 200 g / l.
Claims (12)
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19920394A DE19920394A1 (en) | 1999-05-04 | 1999-05-04 | Alloy coating of gray cast iron |
| ES00936711T ES2182804T3 (en) | 1999-05-04 | 2000-05-04 | COATING WITH ALLOYS OF GRAY FOUNDATION PARTS. |
| AU52113/00A AU5211300A (en) | 1999-05-04 | 2000-05-04 | Alloy coating of cast iron |
| PT00936711T PT1175518E (en) | 1999-05-04 | 2000-05-04 | GRAY FOUNDATION LEATHER COAT |
| AT00936711T ATE223524T1 (en) | 1999-05-04 | 2000-05-04 | ALLOY COATING OF GRAY CASTING |
| PCT/EP2000/003994 WO2000066812A1 (en) | 1999-05-04 | 2000-05-04 | Alloy coating of cast iron |
| DE50000458T DE50000458D1 (en) | 1999-05-04 | 2000-05-04 | ALLOY COATING OF GRAY CAST |
| EP00936711A EP1175518B1 (en) | 1999-05-04 | 2000-05-04 | Alloy coating of cast iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19920394A DE19920394A1 (en) | 1999-05-04 | 1999-05-04 | Alloy coating of gray cast iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE19920394A1 true DE19920394A1 (en) | 2000-11-16 |
Family
ID=7906873
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19920394A Withdrawn DE19920394A1 (en) | 1999-05-04 | 1999-05-04 | Alloy coating of gray cast iron |
| DE50000458T Expired - Fee Related DE50000458D1 (en) | 1999-05-04 | 2000-05-04 | ALLOY COATING OF GRAY CAST |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE50000458T Expired - Fee Related DE50000458D1 (en) | 1999-05-04 | 2000-05-04 | ALLOY COATING OF GRAY CAST |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1175518B1 (en) |
| AT (1) | ATE223524T1 (en) |
| AU (1) | AU5211300A (en) |
| DE (2) | DE19920394A1 (en) |
| ES (1) | ES2182804T3 (en) |
| PT (1) | PT1175518E (en) |
| WO (1) | WO2000066812A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002006566A1 (en) * | 2000-07-19 | 2002-01-24 | Dr.-Ing. Max Schlötter Gmbh & Co. Kg | Method for coating components consisting of hardened steel or cast iron with a zinc-nickel alloy |
| DE102007002321B4 (en) | 2007-01-16 | 2018-07-05 | Volkswagen Ag | Coil spring with corrosion protection |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1870495A1 (en) * | 2006-06-21 | 2007-12-26 | Atotech Deutschland Gmbh | Aqueous alkaline, cyanide-free, bath for the galvanic deposition of Zinc and Zinc alloy layers |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3681211A (en) * | 1970-11-23 | 1972-08-01 | Enequist Chem Co Inc The | Electroplating a black nickel-zinc alloy deposit |
| DE2247875C3 (en) * | 1971-09-30 | 1977-08-11 | EI. du Pont de Nemours and Co, Wilmington, Del. (V.St.A.) | Aqueous, alkaline, cyanidic, galvanic bright zinc bath |
| US4222829A (en) * | 1978-08-08 | 1980-09-16 | Francine Popescu | Alkaline zinc electroplating bath and process |
| DE3121016C2 (en) * | 1981-05-27 | 1986-07-17 | G. P. - Chemie GmbH, 5650 Solingen | Polymeric additive for galvanic zinc baths based on polyalkyleneimines, process for the production of the same as well as aqueous-alkaline, cyanide-free zinc bath containing the same |
| DE3712511A1 (en) * | 1986-04-14 | 1987-10-15 | Dipsol Chem | ELECTRIC PLATING BATH |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5194140A (en) * | 1991-11-27 | 1993-03-16 | Macdermid, Incorporated | Electroplating composition and process |
| DE19848467C5 (en) * | 1998-10-21 | 2006-04-27 | Walter Hillebrand Gmbh & Co. Kg Galvanotechnik | Alkaline zinc-nickel bath |
-
1999
- 1999-05-04 DE DE19920394A patent/DE19920394A1/en not_active Withdrawn
-
2000
- 2000-05-04 ES ES00936711T patent/ES2182804T3/en not_active Expired - Lifetime
- 2000-05-04 EP EP00936711A patent/EP1175518B1/en not_active Expired - Lifetime
- 2000-05-04 DE DE50000458T patent/DE50000458D1/en not_active Expired - Fee Related
- 2000-05-04 AU AU52113/00A patent/AU5211300A/en not_active Abandoned
- 2000-05-04 AT AT00936711T patent/ATE223524T1/en not_active IP Right Cessation
- 2000-05-04 WO PCT/EP2000/003994 patent/WO2000066812A1/en not_active Ceased
- 2000-05-04 PT PT00936711T patent/PT1175518E/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3681211A (en) * | 1970-11-23 | 1972-08-01 | Enequist Chem Co Inc The | Electroplating a black nickel-zinc alloy deposit |
| DE2247875C3 (en) * | 1971-09-30 | 1977-08-11 | EI. du Pont de Nemours and Co, Wilmington, Del. (V.St.A.) | Aqueous, alkaline, cyanidic, galvanic bright zinc bath |
| US4222829A (en) * | 1978-08-08 | 1980-09-16 | Francine Popescu | Alkaline zinc electroplating bath and process |
| DE3121016C2 (en) * | 1981-05-27 | 1986-07-17 | G. P. - Chemie GmbH, 5650 Solingen | Polymeric additive for galvanic zinc baths based on polyalkyleneimines, process for the production of the same as well as aqueous-alkaline, cyanide-free zinc bath containing the same |
| DE3712511A1 (en) * | 1986-04-14 | 1987-10-15 | Dipsol Chem | ELECTRIC PLATING BATH |
Non-Patent Citations (1)
| Title |
|---|
| LPW-Taschenbuch für Galvanotechnik Bd.1, 1988, S.126,131-135 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002006566A1 (en) * | 2000-07-19 | 2002-01-24 | Dr.-Ing. Max Schlötter Gmbh & Co. Kg | Method for coating components consisting of hardened steel or cast iron with a zinc-nickel alloy |
| DE102007002321B4 (en) | 2007-01-16 | 2018-07-05 | Volkswagen Ag | Coil spring with corrosion protection |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2000066812A1 (en) | 2000-11-09 |
| EP1175518B1 (en) | 2002-09-04 |
| DE50000458D1 (en) | 2002-10-10 |
| EP1175518A1 (en) | 2002-01-30 |
| PT1175518E (en) | 2003-01-31 |
| ATE223524T1 (en) | 2002-09-15 |
| AU5211300A (en) | 2000-11-17 |
| ES2182804T3 (en) | 2003-03-16 |
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