DE1073271B - Bath and process for the galvanic deposition of high-gloss nickel coatings - Google Patents
Bath and process for the galvanic deposition of high-gloss nickel coatingsInfo
- Publication number
- DE1073271B DE1073271B DENDAT1073271D DE1073271DA DE1073271B DE 1073271 B DE1073271 B DE 1073271B DE NDAT1073271 D DENDAT1073271 D DE NDAT1073271D DE 1073271D A DE1073271D A DE 1073271DA DE 1073271 B DE1073271 B DE 1073271B
- Authority
- DE
- Germany
- Prior art keywords
- bath
- nickel
- gloss
- current densities
- 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.)
- Pending
Links
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims description 54
- 229910052759 nickel Inorganic materials 0.000 title claims description 27
- 238000000034 method Methods 0.000 title description 2
- 239000000203 mixture Substances 0.000 claims description 7
- CVHZOJJKTDOEJC-UHFFFAOYSA-N Saccharin Chemical compound C1=CC=C2C(=O)NS(=O)(=O)C2=C1 CVHZOJJKTDOEJC-UHFFFAOYSA-N 0.000 claims description 5
- 238000007792 addition Methods 0.000 claims description 4
- 238000006460 hydrolysis reaction Methods 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 230000002378 acidificating Effects 0.000 claims description 3
- -1 alkyl naphthyl sulfonates Chemical class 0.000 claims description 3
- 238000003776 cleavage reaction Methods 0.000 claims description 3
- 108090000623 proteins and genes Proteins 0.000 claims description 3
- 102000004169 proteins and genes Human genes 0.000 claims description 3
- 239000012266 salt solution Substances 0.000 claims description 3
- 230000015556 catabolic process Effects 0.000 claims 1
- 150000002815 nickel Chemical class 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 239000003792 electrolyte Substances 0.000 description 5
- 239000000047 product Substances 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- ROOXNKNUYICQNP-UHFFFAOYSA-N Ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N Boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
- VZJVWSHVAAUDKD-UHFFFAOYSA-N Potassium permanganate Chemical compound [K+].[O-][Mn](=O)(=O)=O VZJVWSHVAAUDKD-UHFFFAOYSA-N 0.000 description 2
- NVBFHJWHLNUMCV-UHFFFAOYSA-N Sulfamide Chemical class NS(N)(=O)=O NVBFHJWHLNUMCV-UHFFFAOYSA-N 0.000 description 2
- 239000004327 boric acid Substances 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 150000003871 sulfonates Chemical class 0.000 description 2
- 229920001353 Dextrin Polymers 0.000 description 1
- 239000004375 Dextrin Substances 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- QMMRZOWCJAIUJA-UHFFFAOYSA-L Nickel(II) chloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 description 1
- LGQLOGILCSXPEA-UHFFFAOYSA-L Nickel(II) sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 description 1
- 229910000831 Steel Chemical group 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 150000001491 aromatic compounds Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229920001436 collagen Polymers 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 235000019425 dextrin Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 150000004676 glycans Polymers 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 229940053662 nickel sulfate Drugs 0.000 description 1
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 150000004804 polysaccharides Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 235000019204 saccharin Nutrition 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000010959 steel Chemical group 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction 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
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/12—Electroplating: Baths therefor from solutions of nickel or cobalt
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
Bad und Verfahren zum galvanischen Abscheiden von hochglânzenden Nickelüberzügen-In .den handelsüblichen Starkvernicklungsbâdern wird bei' der Verriicklung von vorgeschliffenen odes vorgebürsteten Eisenteilen bei Badtemperaturen vor. 30 bis 40-° C mit Kathodenstromdichten von 0,8 bi: h5chstens 1,5 A/dm2 gearbeitet und beï einer mittleren Stromdichte von 1,0 A/dm2 in einer Galvanisierzeit von 120 Minuter eine Nickelschichtdicke von maximal 0,024 mm -abgeschieden.Bath and process for the galvanic deposition of high-gloss nickel coatings-In .the commercially available thick nickel plating baths are pre-sanded during the "Verriicklung" odes pre-brushed iron parts at bath temperatures. 30 to 40- ° C with cathode current densities of 0.8 bi: a maximum of 1.5 A / dm2 and an average current density of 1.0 A / dm2 in an electroplating time of 120 minutes, a nickel layer thickness of maximum 0.024 mm deposited.
Der Nickeliiberzug kommt stumpfmatt aus dem Bad, so dâB es eines erh-eblichen Aufwandes an mechanischer Polierarbeit bedarf, um eine Hochglanzpolitur zu erzeugen.The nickel coating comes from the bathroom with a dull matt finish, which makes it a fair one Mechanical polishing work required to produce a high-gloss polish.
Es besteht seit jahren das Bestreben, in den galvanischen Bâdern nicht nur mit immer h5heren Stromdichten zu arl)eten, sondern auch die Metallüberzüge gleichzeitig in hochglânzender und elastischer Form abzuscheiden.There has been an endeavor for years, not in the galvanic baths can only be arl) eted with ever higher current densities, but also the metal coatings to be deposited in a high-gloss and elastic form at the same time.
Es ist bekannt, daB glânzende Niederschlâge ans saurer Nickelbâdern abgeschieden werden k5nnen beï Zusatz von Kolloiden odes kapillaraktiven Stoffen in Form von geringen Mengen an Leim, Gelatine, Dextrinen, Polysacchariden usw.It is known that glossy precipitates are deposited on acidic nickel baths can be deposited with the addition of colloids or capillary-active substances in the form of small amounts of glue, gelatin, dextrins, polysaccharides, etc.
Alle diese kolloidalen Zusâtze haben den Nachteil, dae nur mit kleinen Stromdichten gearbeitet werden kami.All of these colloidal additives have the disadvantage that they are only small Current densities are worked kami.
Zur Erzeugung glânzender 1'\Iickelfiberzüge wurden auch als Zusâtze Kondensations- und Substitutionsprodukte von Sulfonaten, Sulfamiden und Sulfimiden aromatischer Verbindungen, wie z. B. Benzoisulfonate, Naphthalinsulfonate, Toluolsulfamide, für sich allein oder in Kombination mit metallischen Glanzbildnern vorgeschlagen.Additives were also used to produce shiny nickel coating Condensation and substitution products of sulfonates, sulfamides and sulfimides aromatic compounds, such as. B. Benzoisulfonate, Naphthalinsulfonate, Toluenesulfamide, Proposed alone or in combination with metallic brighteners.
Der Nachteil der Zugabe von Sulfonaten, Sulfamides und Sulfimiden ist der, daB das Glanzintervall für die Abscheidung glânzender Niclcelüberzüge in der Regel auf Kathodenstromdichten vos 0',5 bis 2 A/dm2 beschrânkt ist und bei Anwendung h6herer Stromdichten matte Oder spr5de Niederschlâge abgeschïeden werden.The disadvantage of adding sulfonates, sulfamides and sulfimides is that the gloss interval for the deposition of glossy Niclcel coatings in is usually limited to cathode current densities of 0 ', 5 to 2 A / dm2 and when used With higher current densities, matt or brittle precipitation can be removed.
In einem saurer Nickelbad handelsüblicher Zusammensetzung lasser sich bei Badtemperaturen vos 20 bis 60° C und in einem pH-Bereich vos pH 3 bis 5 ichwachglânzende Nickelniederschlâge mit guter Duktilitât und Elastizitât abscheiden, wenn man dem lektrolyten in bekannter Weise ein Sulfimid, z. B. 3enzoesâuresulfimid, in Mengen vos 2 g bis zur Sâtti-;ungsgrenze zusetzt.In an acidic nickel bath with a commercially available composition I wax glossy at bath temperatures of 20 to 60 ° C and in a pH range of 3 to 5 Separate nickel deposits with good ductility and elasticity, if one considers the electrolytes in a known manner a sulfimide, for. B. 3enzoesâuresulfimid, in quantities vos 2 g added up to the limit of saturation.
ErfindungsgemâB wird die Abscheidung hoch-;lânzender und gleichzeitig duktiler und elastischer Vickelüberzüge über einen weiten Kathodenstromlichtebereich vos 0,5 bis 10 A/dm2 dadurch erreicht, iaB neben dem bekannten Zusatz vos Benzoesâure-;ulfimid noch eine geringe Menge eines starken Glanz-)ildners in Form der Hydrolysespaltprodukte der Proteine oder Kollagene, z. B. Glykokoll, zugesetzt wird, welche beim Kochen von Leim mit Alkali oder Sâure gewonnen werden.According to the invention, the deposition is more high-gloss and more simultaneous ductile and elastic Vickel coatings over a wide range of cathodic current light vos 0.5 to 10 A / dm2 thereby achieved, generally in addition to the well-known addition of benzoic acid sulfimide still a small amount of a strong luster) in the form of hydrolysis cleavage products the proteins or collagens, e.g. B. Glycocolla, which is added during cooking can be obtained from glue with alkali or acid.
Weitere Zusâtze in Form geringer Mengen von Alkylnaphthylsulfonaten verhindern das Auftreten einer Porenbildung ohne Beeinflussung der Glanzwirkung und der Duktilitât der Überziïge.Other additives in the form of small amounts of alkyl naphthyl sulfonates prevent the formation of pores without affecting the gloss effect and the ductility of the coatings.
Bei alleinigem Zusatz von Hydrolysespaltprodukten in geringen Mengen werden bei erh5hten Stromdichten glânzende, aber spr6de Niederschlâge abgeschieden. In Kombination mit Benzoesâuresulfimid wird die Sprôdigkeit aufgehob en, und gleichzeitig werden hochglânzende und duktile Niederschlâge bis zu hbchsten Stromdichten abgeschieden.With the sole addition of hydrolysis cleavage products in small amounts Shiny but brittle precipitates are deposited at increased current densities. In combination with benzoic sulfimide, the brittleness is abolished, and at the same time highly glossy and ductile precipitates up to the highest current densities are deposited.
Die Erfindung ist nicht auf die Verwendung eimes Nickelbades besonderer Zusammensetzung beschrânkt. Die handelsüblichen Starkvernicklungsbâder, z. B. das Wattsche Nickelbad aus Nickelsulfat, Nickelchlorid und Borsâure mit einem Gehalt vos 60 bis 70- g/1 Nickel, kbnnen zum Ansatz eines Glanznickelbades nach der Erfindung Verwendung finden.The invention is not particular to the use of a nickel bath Composition limited. The commercially available strong nickel baths, e.g. B. that Watt's nickel bath containing nickel sulfate, nickel chloride and boric acid from 60 to 70 g / l nickel, can be used to make a bright nickel bath according to the invention Find use.
Auch die Anwesenheit anderer Metallsalze, z. B. Natrium-, Magnesium- oder Ammoniumsalze, verândern fin Gegensatz zu vielen Glanznickelbâdern nicht das Glanzintervall od-er die Duktilitât der Nickelüberzüge odes beeinflussen die gegenseitige Wechselwirkung der kombinierten Glanztrâger Oder Glanzbildner: Da als Glanztrâger und Glanzbildner sur solche organischen Verbindungen Verwendung finden, die in der Metallsalzl5sung weder oxydiert noch reduziert ,iverden und bei der Umsetzung keine unl5slichen oder kolloidalen Zersetzungsprodukte ausscheiden, zeichnet sich das Glanznickelhad nach der Erfindung dadurch aus, daf der Elektrolyt gegen Eisenverunreinigungen rclativ unempfindlich ist und im Gegensatz zu den meisten handelsüblichen Glanznickelbâdern Eisënverunreinigungen un Elelctrc'yten Oder auftretende Wasserstoffporen im Nickelüberzug durch Zusatz von Oxydationsmitteln, z. B. Wasserstoffperoxyd, Kaliumpermanganat, Ammoniumpersulfat, bei normaler Arbeitstemperatur beseitigt werden kbnnen, ohne daB das Glanzintervall odes die Duktilitât der abgeschiedenen Nickelüberzüge ungünstig verândert werden.The presence of other metal salts, e.g. B. sodium, magnesium or ammonium salts, in contrast to many bright nickel baths, do not change that Gloss interval or the ductility of the nickel coatings or influence the mutual Interaction of the combined gloss carriers or gloss formers: As gloss carriers and brighteners sur those organic compounds that are used in the Metal salt solution is neither oxidized nor reduced, and undergoes none in the reaction separate insoluble or colloidal decomposition products, this is characterized Bright nickel had according to the invention thereby from that the electrolyte is rclatively insensitive to iron impurities and unlike most commercially available bright nickel baths, iron impurities and electrolytes or occurring Hydrogen pores in the nickel coating by adding oxidizing agents, e.g. B. hydrogen peroxide, Potassium permanganate, ammonium persulfate, can be eliminated at normal working temperature can without affecting the gloss interval or the ductility of the deposited nickel coatings be changed unfavorably.
Ein galvanisches Bad zur Abscheidung hochglânzender Nickelüberzüge
bat z. B. folgende Zusammensetzung
Zweckmâi3ig werden bei Anwendung von Kathodenstromdichten von 2 bis 10 A/dm2 und Badtemperaturen von 40 bis 60° C in bewegten Elektrolyten hochglânzende und elastische Nickelüberzüge abgeschieden.When using cathode current densities of 2 to 10 A / dm2 and bath temperatures from 40 to 60 ° C in agitated electrolytes, high-gloss and elastic nickel coatings deposited.
Im Mittel arbeitet man im bewegten Elektrolyten mit einer mittleren Stromdichte von 5 A/dm2 und scheidet in 1 Minute 1 [, Nickel ab. Die Nickelüberzüge werden auf vorgeschliffemen und vorgehârteten Eisen- und Stahlteilen in hochglânzender Form, abgeschieden, die sich ohne Zwischenpolitur in einem dekorativen Chrombad hochglânzend verchromen lassen.On average, one works in the moving electrolyte with a medium one Current density of 5 A / dm2 and deposits 1 [, nickel in 1 minute. The nickel coatings are on pre-ground and pre-hardened iron and steel parts in high gloss Form, deposited, which can be placed in a decorative chrome bath without intermediate polishing Have a high-gloss chrome-plated.
Claims (6)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1073271B true DE1073271B (en) | 1960-01-14 |
Family
ID=597559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT1073271D Pending DE1073271B (en) | Bath and process for the galvanic deposition of high-gloss nickel coatings |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1073271B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2372908A1 (en) * | 1976-12-03 | 1978-06-30 | Bnf Metals Tech Centre | ELECTROLYTIC NICKELING BATH |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB506332A (en) * | 1937-09-23 | 1939-05-23 | Harold Robert Priston | Improvements in the electrodeposition of nickel |
-
0
- DE DENDAT1073271D patent/DE1073271B/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB506332A (en) * | 1937-09-23 | 1939-05-23 | Harold Robert Priston | Improvements in the electrodeposition of nickel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2372908A1 (en) * | 1976-12-03 | 1978-06-30 | Bnf Metals Tech Centre | ELECTROLYTIC NICKELING BATH |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE969005C (en) | Process for the production of high-gloss copper coatings on base metals | |
| US2198365A (en) | Electroplating | |
| DE959242C (en) | Bath for the galvanic deposition of antimony or antimony alloys | |
| JPS6141999B2 (en) | ||
| DE1091397B (en) | Process for the galvanic deposition of a zinc coating on magnesium and its alloys | |
| DE1177451B (en) | Metal object coated with several metallic layers to protect against atmospheric corrosion | |
| DE1073271B (en) | Bath and process for the galvanic deposition of high-gloss nickel coatings | |
| DE750185C (en) | Baeder for the electrolytic deposition of shiny metal deposits | |
| DE888191C (en) | Bath and process for galvanic nickel plating | |
| DE1003531B (en) | Acid galvanic bright nickel plating bath | |
| DE2450133A1 (en) | PROCESS AND GALVANIC BATH FOR DEPOSITING NICKEL / IRON AND NICKEL / COBALT / IRON ALLOYS | |
| DE1085741B (en) | Antimony-containing electrolyte solution to produce shiny, light yellow gold coatings | |
| DE879048C (en) | Baeder for the electrolytic deposition of shiny metal deposits | |
| DE1153587B (en) | Bath for the galvanic deposition of silver alloys | |
| DE1240358B (en) | Bath for the galvanic deposition of platinum coatings | |
| EP0163944A2 (en) | Aqueous acid electrolytes containing nickel and cobalt ions for the galvanic deposition of hardly discolouring lustrous white alloy coatings | |
| DE2743847A1 (en) | METHOD FOR GALVANIC DEPOSITION OF NICKEL AND COBALT ALONE OR AS BINARY OR TERNAIRE ALLOYS | |
| DE2450527C2 (en) | Aqueous, acidic bath for the galvanic deposition of semi-glossy nickel coatings | |
| DE2945163C2 (en) | Brightener for electroplated silver bath and electroplated silver bath | |
| DE3619386A1 (en) | SULFATE-CONTAINING BATH FOR GALVANIC DEPOSITION OF A ZINC-NICKEL ALLOY ON IRON | |
| JPS62164889A (en) | Gold-silver-copper alloy plating solution | |
| AT156575B (en) | Process for producing galvanic coatings containing silver. | |
| DE666420C (en) | Bath for the production of soft, ductile and firmly adhering deposits of metallic nickel by electrolysis | |
| DE963389C (en) | Bath for the production of galvanic nickel deposits | |
| DE1496827C (en) | Composite product made of a metallic base body and three galvanically separated nickel layers |