EP0987349B1 - Verfahren zur galvanischen Abscheidung von Zinkniederschlägen und/oder Zinklegierungsniederschlägen - Google Patents
Verfahren zur galvanischen Abscheidung von Zinkniederschlägen und/oder Zinklegierungsniederschlägen Download PDFInfo
- Publication number
- EP0987349B1 EP0987349B1 EP99117272A EP99117272A EP0987349B1 EP 0987349 B1 EP0987349 B1 EP 0987349B1 EP 99117272 A EP99117272 A EP 99117272A EP 99117272 A EP99117272 A EP 99117272A EP 0987349 B1 EP0987349 B1 EP 0987349B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- zinc
- electrolyte
- added
- heterocyclic aromatic
- deposits
- 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.)
- Expired - Lifetime
Links
- 239000011701 zinc Substances 0.000 title claims abstract description 20
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical group [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 17
- 229910001297 Zn alloy Inorganic materials 0.000 title claims abstract description 16
- 238000004070 electrodeposition Methods 0.000 title claims 2
- 239000003792 electrolyte Substances 0.000 claims abstract description 47
- 125000006615 aromatic heterocyclic group Chemical group 0.000 claims abstract description 20
- 125000005842 heteroatom Chemical group 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract 2
- 229910052751 metal Inorganic materials 0.000 claims abstract 2
- 125000000217 alkyl group Chemical group 0.000 claims description 13
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 9
- 150000003751 zinc Chemical class 0.000 claims description 9
- 239000004094 surface-active agent Substances 0.000 claims description 7
- 125000003118 aryl group Chemical group 0.000 claims description 6
- 125000002877 alkyl aryl group Chemical group 0.000 claims description 5
- 230000002378 acidificating effect Effects 0.000 claims description 4
- 125000001072 heteroaryl group Chemical group 0.000 claims description 4
- 239000003945 anionic surfactant Substances 0.000 claims description 3
- 239000002736 nonionic surfactant Substances 0.000 claims description 2
- 229920000151 polyglycol Polymers 0.000 claims description 2
- 239000010695 polyglycol Substances 0.000 claims description 2
- 150000003222 pyridines Chemical class 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 abstract description 22
- -1 zinc salt Chemical class 0.000 abstract description 7
- 239000011260 aqueous acid Substances 0.000 abstract 1
- 238000005282 brightening Methods 0.000 abstract 1
- 238000009713 electroplating Methods 0.000 abstract 1
- 150000002829 nitrogen Chemical class 0.000 abstract 1
- 230000008021 deposition Effects 0.000 description 9
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 8
- 239000002244 precipitate Substances 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 150000007513 acids Chemical class 0.000 description 5
- 150000003839 salts Chemical group 0.000 description 5
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 4
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 235000005074 zinc chloride Nutrition 0.000 description 4
- 239000011592 zinc chloride Substances 0.000 description 4
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 3
- 125000004432 carbon atom Chemical group C* 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 125000005843 halogen group Chemical group 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- AVWFAACIXBQMBF-UHFFFAOYSA-N 1-benzylpyridin-1-ium-3-carboxylate Chemical compound [O-]C(=O)C1=CC=C[N+](CC=2C=CC=CC=2)=C1 AVWFAACIXBQMBF-UHFFFAOYSA-N 0.000 description 2
- GKQHIYSTBXDYNQ-UHFFFAOYSA-M 1-dodecylpyridin-1-ium;chloride Chemical compound [Cl-].CCCCCCCCCCCC[N+]1=CC=CC=C1 GKQHIYSTBXDYNQ-UHFFFAOYSA-M 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- PVNIIMVLHYAWGP-UHFFFAOYSA-N Niacin Chemical compound OC(=O)C1=CC=CN=C1 PVNIIMVLHYAWGP-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 150000001868 cobalt Chemical class 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 125000001033 ether group Chemical group 0.000 description 2
- 150000002390 heteroarenes Chemical class 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 150000002815 nickel Chemical class 0.000 description 2
- 239000001103 potassium chloride Substances 0.000 description 2
- 235000011164 potassium chloride Nutrition 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 description 2
- 239000000080 wetting agent Substances 0.000 description 2
- HIXDQWDOVZUNNA-UHFFFAOYSA-N 2-(3,4-dimethoxyphenyl)-5-hydroxy-7-methoxychromen-4-one Chemical compound C=1C(OC)=CC(O)=C(C(C=2)=O)C=1OC=2C1=CC=C(OC)C(OC)=C1 HIXDQWDOVZUNNA-UHFFFAOYSA-N 0.000 description 1
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 1
- FPYUJUBAXZAQNL-UHFFFAOYSA-N 2-chlorobenzaldehyde Chemical compound ClC1=CC=CC=C1C=O FPYUJUBAXZAQNL-UHFFFAOYSA-N 0.000 description 1
- REEBJQTUIJTGAL-UHFFFAOYSA-N 3-pyridin-1-ium-1-ylpropane-1-sulfonate Chemical compound [O-]S(=O)(=O)CCC[N+]1=CC=CC=C1 REEBJQTUIJTGAL-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- BWHOZHOGCMHOBV-UHFFFAOYSA-N Benzalacetone Natural products CC(=O)C=CC1=CC=CC=C1 BWHOZHOGCMHOBV-UHFFFAOYSA-N 0.000 description 1
- 239000005711 Benzoic acid Substances 0.000 description 1
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 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
- HSSJULAPNNGXFW-UHFFFAOYSA-N [Co].[Zn] Chemical group [Co].[Zn] HSSJULAPNNGXFW-UHFFFAOYSA-N 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 150000001449 anionic compounds Chemical class 0.000 description 1
- 229940111121 antirheumatic drug quinolines Drugs 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 1
- 239000012965 benzophenone Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- YMKDRGPMQRFJGP-UHFFFAOYSA-M cetylpyridinium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[N+]1=CC=CC=C1 YMKDRGPMQRFJGP-UHFFFAOYSA-M 0.000 description 1
- GVPFVAHMJGGAJG-UHFFFAOYSA-L cobalt dichloride Chemical compound [Cl-].[Cl-].[Co+2] GVPFVAHMJGGAJG-UHFFFAOYSA-L 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 125000002485 formyl group Chemical group [H]C(*)=O 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 150000002460 imidazoles Chemical class 0.000 description 1
- 238000004519 manufacturing process 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
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 1
- 229960003512 nicotinic acid Drugs 0.000 description 1
- 235000001968 nicotinic acid Nutrition 0.000 description 1
- 239000011664 nicotinic acid Substances 0.000 description 1
- 125000006574 non-aromatic ring group Chemical group 0.000 description 1
- 150000002891 organic anions Chemical class 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 1
- 150000003217 pyrazoles Chemical class 0.000 description 1
- 150000003233 pyrroles Chemical class 0.000 description 1
- 150000003248 quinolines Chemical class 0.000 description 1
- 229960004889 salicylic acid Drugs 0.000 description 1
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 description 1
- 235000010234 sodium benzoate Nutrition 0.000 description 1
- 239000004299 sodium benzoate Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- BWHOZHOGCMHOBV-BQYQJAHWSA-N trans-benzylideneacetone Chemical compound CC(=O)\C=C\C1=CC=CC=C1 BWHOZHOGCMHOBV-BQYQJAHWSA-N 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
- C25D3/565—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of zinc
-
- 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
- C25D3/22—Electroplating: Baths therefor from solutions of zinc
Definitions
- the invention relates to a method for galvanic Separation of zinc precipitates and / or zinc alloy precipitates on a metallic surface, with an aqueous acidic electrolyte is used, the at least one zinc salt and at least one high gloss agent contains.
- the high gloss agents are commonly used in alcoholic, used in particular in methanolic solution. Due to the slight inflammability and also toxicity These solutions are used in the manufacture, the Transportation and storage of solutions special precautions required. That is more disadvantageous Way consuming. Furthermore, the high gloss agents are also in higher boiling Solvents, such as butyl glycol, used, however, in physiologically disadvantageous. Since the solubility of said known high gloss agent in water is very low, they must High gloss agents with the help of high concentrations of wetting agents in the solubilized aqueous electrolyte. Again, this is expensive and expensive.
- the invention is the technical problem underlying a Specify method of the type mentioned, with water-soluble Hochglanzchun works in a simple and reliable way a produce optimum gloss of the zinc and zinc alloy layers.
- the invention teaches a method for galvanic deposition of zinc deposits and / or Zinc alloy precipitates on a metallic surface, with one aqueous acidic electrolyte is worked, the at least one zinc salt as well contains at least one high gloss agent, wherein the electrolyte as a high gloss agent at least one heterocyclic aromatic compound having at least one alkylated nitrogen atom is added as a heteroatom, wherein at least one not ionogenic surfactant from the group "alkyl alkoxylate, aryl alkoxylate, alkylaryl alkoxylate" is added and / or wherein at least one anionic surfactant from the group "sulfated and / or sulfonated alkyl alkoxylate, sulfated and / or sulfonated Aryl alkoxylate, sulfated and / or sulfonated alkylaryl alkoxylate "is added.
- Heterocyclic aromatic compounds are also called heteromates.
- the heterocyclic aromatic compound used at least one nitrogen atom as a heteroatom, to which an alkyl group is bound. In that regard, it is N-alkylated heterocyclic aromatic Links.
- the high gloss agent used can also be several alkylated Have nitrogen atoms as heteroatoms. It is within the scope of the invention in that the alkyl groups bound to the nitrogen atom are straight-chain, branched or cyclic.
- the Alkyl groups can also double bonds and / or triple bonds contain.
- According to one embodiment of the Invention are hydrogen atoms of the alkyl groups substituted functional groups.
- heterocyclic aromatic compound in addition to one or more alkylated nitrogen atoms more Has heteroatoms.
- This can not be Alkylated nitrogen atoms act on, depending on the Bonding conditions, also bound to a hydrogen atom can be. But it can also be about others Heteroatoms, such as oxygen or sulfur atoms act.
- the heterocyclic aromatic compound at least one more Nitrogen atom as a heteroatom, to which nitrogen atom no alkyl group is bound. - It is located in Frame of the invention that the carbon atoms of the heterocyclic aromatic compound instead of hydrogen atoms other substituents are attached.
- heterocyclic aromatic compound is a fused ring system used, the aromatic and / or non-aromatic rings contains. In this embodiment, only one ring or can some rings or can all rings respectively have at least one heteroatom.
- heterocyclic aromatic compound at least one N-alkylated 5-membered heteroaromatic and / or at least N-alkylated 6-membered heteroaromatic Electrolytes added.
- These 5-ring heteroaromatics and / or 6-membered heteroaromatics are used as high gloss agents for the zinc and / or zinc alloy deposit especially suitable.
- heterocyclic aromatic compound at least one N-alkylated Pyridine added. Preference is given to the addition of N-hexadecylpyridinium chloride as a high gloss agent.
- the heterocyclic aromatic Compound in the form of a quaternary salt as High gloss agent can be used.
- Electrolyte an associated inorganic or organic Anion on, expediently with the other electrolyte components is compatible.
- it is these are halide ions, sulfate ions, Hydrogensulfationen, Tetrafluoroborate ions or acetate ions.
- N-alkylated pyrroles and / or N-alkylated pyrazoles and / or N-alkylated imidazoles and / or N-alkylated Use quinolines as a high gloss agent.
- the heterocyclic aromatic compound in one concentration from 0.001 g / l to 100 g / l, preferably 0.005 g / l to 10 g / l, based on the electrolyte used. It is located in Frame of the invention that in addition to the heterocyclic aromatic compound other known High gloss agents are used.
- the total concentration the high gloss agent added to the electrolyte is in In this case, 0.001 g / l to 100 g / l, preferably 0.005 g / l to 10 g / l, based on the electrolyte.
- For the deposition of zinc deposits and / or zinc alloy deposits are different types of electrolytes known.
- a zinc electrolyte based on zinc chloride used is preferably a zinc electrolyte based on zinc chloride used.
- the zinc electrolyte contains 5 g / l to 500 g / l Zinc salt, preferably 50 g / l to 150 g / l zinc salt, preferably zinc chloride.
- zinc-cobalt alloys If the electrolyte contains a zinc salt, preferably zinc chloride, as well as a cobalt salt, is preferred Cobalt chloride.
- the zinc salt is in an amount of 5 g / l to 500 g / l, preferably 50 g / l to 150 g / l, and the Cobalt salt in an amount of from 0.01 g / l to 150 g / l, preferably 1 g / l to 50 g / l used.
- Zinc-nickel alloys will be a zinc salt, preferably Zinc chloride, and a nickel salt, preferably nickel chloride, used in the electrolyte.
- the concentration of Zinc salt in the electrolyte is 5 g / l to 500 g / L, preferably 50 g / L to 150 g / L, and the concentration of the nickel salt in the electrolyte is 0.01 g / L to 150 g / l, preferably 1 g / l to 50 g / l.
- the electrolyte will preferably set weak-soft.
- the electrolyte points expediently a pH of 4 to 6. - It lies in the context of the invention, that the electrolyte is a suitable Contains conductive salt.
- conductive salt are preferably Ammonium chloride and / or potassium chloride and / or Sodium chloride is used.
- the electrolyte contains that Conducting salt expediently in an amount of 5 g / l to 250 g / l.
- At least one surfactant is added to the electrolyte.
- a surfactant concentration of 0.001 g / l to 100 g / l, preferably 0.5 g / l to 20 g / l, in each case based on the Electrolytes, chosen.
- the Invention will at least enter the electrolyte nonionic surfactant from the group "alkyl alkoxylate, Arylalkoxylate, alkylarylalkoxylate "added
- Another embodiment of the invention is the electrolyte at least one anionic surfactant from the group "sulfated and / or sulfonated alkyl alkoxylate, sulfated and / or sulfonated arylalkoxylate, sulfated and / or sulfonated alkylaryl alkoxylate " added.
- the added to the electrolyte at least one Surfactant also acts as a so-called auxiliary gloss agent.
- the electrolyte further contains at least one Polyglycol, preferably in conjunction with at least one Surfactant is used in the electrolyte.
- the electrolyte at least one substance from the group "aromatic carboxylic acid, Hydroxycarboxylic acid, derivative of the aforementioned acids " is added.
- Derivative of the acids here also means a salt the acids.
- the electrolyte benzoic acid and / or nicotinic acid and / or salicylic acid or at least one derivative of the aforementioned acids added.
- the abovementioned acids and / or derivatives are expediently in a concentration of 1 g / l to 50 g / l contained in the electrolyte.
- the substances mentioned serve to improve the deposition in one possible wide current density range.
- the invention is based on the finding that it is in the heterocyclic aromatic used in the invention.
- Compounds are substances that are outstanding as a high gloss agent for the galvanic deposition zinc precipitation and / or zinc alloy precipitation are suitable.
- these compounds are complete water-soluble high-gloss agents, so that the beginning, described in connection with the known measures Disadvantages can be avoided.
- Concentrations of wetting agents in the electrolyte for the Heterocyclic aromatic compounds according to the invention unnecessary.
- the inventive High gloss agent in a simple way in the electrolyte solution be brought in and effect nonetheless a functionally reliable deposition of high-gloss Zinc layers or zinc alloy layers. In the result the process of the invention is characterized by little elaborate and inexpensive measures.
- the invention will be described below with reference to exemplary embodiments explained in more detail.
- the embodiment 1 relates to a method according to the prior art.
- the Embodiments 2 to 4 relate to the invention Method.
- an electrolyte of the following composition was added: 35 g / l Zn 2+ (as ZnCl 2 ), 235 g / l KCl, 25 g / l H 3 BO 3 , 4 g / l sodium benzoate, 6 g / l Lutensol ON 110 (BASF) and 2 g / l Lutensit AP 14 (BASF).
- BASF g / l Lutensol ON 110
- BASF 2 g / l Lutensit AP 14
- an electrolyte according to embodiment 1 was additionally 0.5 g / l of 1- (3-sulfopropyl) pyridinium betaine given. Under the same conditions as in the embodiment 1 deposited precipitate showed gloss in the High current density range.
- Embodiment 1 In an electrolyte according to Embodiment 1 were 0.05 g / l dodecylpyridinium chloride was added. It became one compared with Embodiment 2 extended gloss range detected.
- An electrolyte according to Embodiment 1 0.1 g / l N-benzylpyridinium-3-carboxylate was added. After coating shows the whole sheet steel except in small areas of very high and very low current density an optimal shine.
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- 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
Claims (7)
- Verfahren zur galvanischen Abscheidung von Zinkniederschlägen und/oder Zinklegierungsniederschlägen auf einer metallischen Oberfläche,
wobei mit einem wäßrigen sauren Elektrolyten gearbeitet wird, der zumindest ein Zinksalz sowie zumindest ein Hochglanzmittel enthält,
wobei dem Elektrolyten als Hochglanzmittel zumindest eine heterozyklische aromatische Verbindung mit zumindest einem alkylierten Stickstoffatom als Heteroatom zugesetzt wird,
wobei zumindest ein nicht ionogenes Tensid aus der Gruppe "Alkylalkoxylat, Arylalkoxylat, Alkylarylalkoxylat" zugesetzt wird und/oder
wobei zumindest ein anionisches Tensid aus der Gruppe "sulfatiertes und/oder sulfoniertes Alkylalkoxylat, sulfatiertes und/oder sulfoniertes Arylalkoxylat, sulfatiertes und/oder sulfoniertes Alkylarylalkoxylat" zugesetzt wird. - Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß als heterozyklische aromatische Verbindung zumindest ein 5-Ring-Heteroatomat und/oder zumindest ein 6-Ring-Heteroatomat zugesetzt wird.
- Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß als heterozyklische aromatische Verbindung zumindest ein N-alkyliertes Pyridin zugesetzt wird.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die heterozyklische aromatische Verbindung in einer Konzentration von 0,001 g/l bis 100 g/l, vorzugsweise 0,005 g/l bis 10 g/l, bezogen auf den Elektrolyten, eingesetzt wird.
- Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß dem Elektrolyten zumindest ein Tensid zugesetzt wird.
- Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß eine Tensidkonzentration von 0,001 g/l bis 100 g/l, vorzugsweise 0,5 g/l bis 20 g/l, bezogen auf den Elektrolyten, gewählt wird.
- Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß dem Elektrolyten ein Polyglykol zugesetzt wird.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/394,839 US6238542B1 (en) | 1998-09-15 | 1999-09-13 | Water soluble brighteners for zinc and zinc alloy electrolytes |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19842098 | 1998-09-15 | ||
DE19842098 | 1998-09-15 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0987349A1 EP0987349A1 (de) | 2000-03-22 |
EP0987349B1 true EP0987349B1 (de) | 2005-01-05 |
Family
ID=7880955
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99117272A Expired - Lifetime EP0987349B1 (de) | 1998-09-15 | 1999-09-02 | Verfahren zur galvanischen Abscheidung von Zinkniederschlägen und/oder Zinklegierungsniederschlägen |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0987349B1 (de) |
AT (1) | ATE286547T1 (de) |
DE (2) | DE19941765A1 (de) |
ES (1) | ES2237003T3 (de) |
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US9269998B2 (en) | 2013-03-13 | 2016-02-23 | Fluidic, Inc. | Concave gas vent for electrochemical cell |
US9325037B2 (en) | 2013-03-13 | 2016-04-26 | Fluidic, Inc. | Hetero-ionic aromatic additives for electrochemical cells comprising a metal fuel |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10146559A1 (de) * | 2001-09-21 | 2003-04-10 | Enthone Omi Deutschland Gmbh | Verfahren zur Abscheidung einer Zink-Nickel-Legierung aus einem Elektrolyten |
BR112019000713B1 (pt) | 2016-07-22 | 2023-04-25 | Nantenergy, Inc | Célula eletroquímica e método de conservar umidade dentro de uma célula eletroquímica |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3822194A (en) * | 1971-06-28 | 1974-07-02 | Du Pont | Acid zinc electroplating |
US3769184A (en) * | 1972-05-23 | 1973-10-30 | Du Pont | Acid zinc electroplating |
US3823076A (en) * | 1972-05-23 | 1974-07-09 | Du Pont | Zinc electroplating additive |
CA1134317A (en) * | 1978-01-16 | 1982-10-26 | Sylvia Martin | Zinc electroplating bath |
EP0037634A1 (de) * | 1980-02-28 | 1981-10-14 | Albright & Wilson Limited | Zinkbäder und Zusätze hierfür |
US5417840A (en) * | 1993-10-21 | 1995-05-23 | Mcgean-Rohco, Inc. | Alkaline zinc-nickel alloy plating baths |
-
1999
- 1999-09-02 AT AT99117272T patent/ATE286547T1/de not_active IP Right Cessation
- 1999-09-02 DE DE19941765A patent/DE19941765A1/de not_active Withdrawn
- 1999-09-02 DE DE59911392T patent/DE59911392D1/de not_active Expired - Lifetime
- 1999-09-02 ES ES99117272T patent/ES2237003T3/es not_active Expired - Lifetime
- 1999-09-02 EP EP99117272A patent/EP0987349B1/de not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9269998B2 (en) | 2013-03-13 | 2016-02-23 | Fluidic, Inc. | Concave gas vent for electrochemical cell |
US9325037B2 (en) | 2013-03-13 | 2016-04-26 | Fluidic, Inc. | Hetero-ionic aromatic additives for electrochemical cells comprising a metal fuel |
Also Published As
Publication number | Publication date |
---|---|
DE19941765A1 (de) | 2000-03-16 |
ATE286547T1 (de) | 2005-01-15 |
DE59911392D1 (de) | 2005-02-10 |
EP0987349A1 (de) | 2000-03-22 |
ES2237003T3 (es) | 2005-07-16 |
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