EP2309027A1 - Solution de traitement pour la production de couches de conversion noires sans chrome ni cobalt - Google Patents
Solution de traitement pour la production de couches de conversion noires sans chrome ni cobalt Download PDFInfo
- Publication number
- EP2309027A1 EP2309027A1 EP09171140A EP09171140A EP2309027A1 EP 2309027 A1 EP2309027 A1 EP 2309027A1 EP 09171140 A EP09171140 A EP 09171140A EP 09171140 A EP09171140 A EP 09171140A EP 2309027 A1 EP2309027 A1 EP 2309027A1
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- EP
- European Patent Office
- Prior art keywords
- treatment solution
- group
- formula
- solution according
- alkyl
- 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.)
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- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title claims description 6
- 238000007739 conversion coating Methods 0.000 title 1
- 238000006243 chemical reaction Methods 0.000 claims abstract description 33
- -1 oxo cations Chemical class 0.000 claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 15
- 229910052736 halogen Inorganic materials 0.000 claims abstract description 12
- 150000001875 compounds Chemical class 0.000 claims abstract description 10
- 239000007800 oxidant agent Substances 0.000 claims abstract description 9
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 9
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 9
- 125000003118 aryl group Chemical group 0.000 claims abstract description 8
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 7
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 7
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 7
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 7
- 150000001768 cations Chemical class 0.000 claims abstract description 6
- 150000002898 organic sulfur compounds Chemical class 0.000 claims abstract description 6
- 229910052796 boron Inorganic materials 0.000 claims abstract description 5
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 5
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 4
- 229910052794 bromium Inorganic materials 0.000 claims abstract description 4
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 4
- 229910052740 iodine Inorganic materials 0.000 claims abstract description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 16
- 150000002500 ions Chemical class 0.000 claims description 12
- 239000011651 chromium Substances 0.000 claims description 11
- 150000002367 halogens Chemical class 0.000 claims description 10
- CWERGRDVMFNCDR-UHFFFAOYSA-N thioglycolic acid Chemical compound OC(=O)CS CWERGRDVMFNCDR-UHFFFAOYSA-N 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 8
- PMNLUUOXGOOLSP-UHFFFAOYSA-N 2-mercaptopropanoic acid Chemical compound CC(S)C(O)=O PMNLUUOXGOOLSP-UHFFFAOYSA-N 0.000 claims description 6
- 125000000217 alkyl group Chemical group 0.000 claims description 5
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 150000002823 nitrates Chemical class 0.000 claims description 4
- JRKICGRDRMAZLK-UHFFFAOYSA-L persulfate group Chemical group S(=O)(=O)([O-])OOS(=O)(=O)[O-] JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 claims description 4
- DLLMHEDYJQACRM-UHFFFAOYSA-N 2-(carboxymethyldisulfanyl)acetic acid Chemical compound OC(=O)CSSCC(O)=O DLLMHEDYJQACRM-UHFFFAOYSA-N 0.000 claims description 3
- DKIDEFUBRARXTE-UHFFFAOYSA-N 3-mercaptopropanoic acid Chemical compound OC(=O)CCS DKIDEFUBRARXTE-UHFFFAOYSA-N 0.000 claims description 3
- 150000001204 N-oxides Chemical class 0.000 claims description 3
- 150000004973 alkali metal peroxides Chemical class 0.000 claims description 3
- 150000001451 organic peroxides Chemical class 0.000 claims description 3
- 150000002978 peroxides Chemical group 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 2
- 150000002828 nitro derivatives Chemical class 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 230000001590 oxidative effect Effects 0.000 abstract 2
- 239000000243 solution Substances 0.000 description 51
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 27
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 22
- 229910052725 zinc Inorganic materials 0.000 description 22
- 239000011701 zinc Substances 0.000 description 22
- 230000007797 corrosion Effects 0.000 description 21
- 238000005260 corrosion Methods 0.000 description 21
- 238000005246 galvanizing Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 9
- 239000000047 product Substances 0.000 description 9
- 239000003792 electrolyte Substances 0.000 description 8
- 229910000851 Alloy steel Inorganic materials 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 238000002161 passivation Methods 0.000 description 7
- 150000003839 salts Chemical class 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 5
- 229910017052 cobalt Inorganic materials 0.000 description 5
- 239000010941 cobalt Substances 0.000 description 5
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 230000007935 neutral effect Effects 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 150000003464 sulfur compounds Chemical class 0.000 description 5
- 239000010936 titanium Substances 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- 229910002651 NO3 Inorganic materials 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 238000004532 chromating Methods 0.000 description 3
- 229910001430 chromium ion Inorganic materials 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 description 2
- 125000004209 (C1-C8) alkyl group Chemical group 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000001845 chromium compounds Chemical class 0.000 description 2
- BFGKITSFLPAWGI-UHFFFAOYSA-N chromium(3+) Chemical compound [Cr+3] BFGKITSFLPAWGI-UHFFFAOYSA-N 0.000 description 2
- RXCBCUJUGULOGC-UHFFFAOYSA-H dipotassium;tetrafluorotitanium;difluoride Chemical compound [F-].[F-].[F-].[F-].[F-].[F-].[K+].[K+].[Ti+4] RXCBCUJUGULOGC-UHFFFAOYSA-H 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- NDKWCCLKSWNDBG-UHFFFAOYSA-N zinc;dioxido(dioxo)chromium Chemical compound [Zn+2].[O-][Cr]([O-])(=O)=O NDKWCCLKSWNDBG-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000007059 acute toxicity Effects 0.000 description 1
- 231100000403 acute toxicity Toxicity 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- VQWFNAGFNGABOH-UHFFFAOYSA-K chromium(iii) hydroxide Chemical compound [OH-].[OH-].[OH-].[Cr+3] VQWFNAGFNGABOH-UHFFFAOYSA-K 0.000 description 1
- 229910001429 cobalt ion Inorganic materials 0.000 description 1
- XLJKHNWPARRRJB-UHFFFAOYSA-N cobalt(2+) Chemical compound [Co+2] XLJKHNWPARRRJB-UHFFFAOYSA-N 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 150000004715 keto acids Chemical class 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910001453 nickel ion Inorganic materials 0.000 description 1
- 238000004091 panning Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920003009 polyurethane dispersion Polymers 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 150000004756 silanes Chemical class 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/48—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
- C23C22/53—Treatment of zinc or alloys based thereon
Definitions
- chromium (VI) chromium
- chromium (III) which in the surface film which is more alkaline, inter alia, by the evolution of hydrogen is, inter alia, chromium (III) hydroxide or sparingly soluble ⁇ -oxo or ⁇ -hydroxo bridged chromium (III) complex is deposited.
- chromium (III) hydroxide or sparingly soluble ⁇ -oxo or ⁇ -hydroxo bridged chromium (III) complex is deposited.
- sparingly soluble zinc chromate (VI) is formed. Overall, a tightly closed, very well protected against the corrosion attack by electrolytes conversion layer on the zinc surface.
- chromium (VI) compounds are distinguished by their high carcinogenic potential, so that it is necessary to replace the processes associated with these compounds.
- Dyes which are also used in Cr (III) -based passivations, can in principle also be used in chromium-free conversion layers.
- a transition metal such as cobalt or iron as Co (II) or Fe (II) or Fe (III) is added to the passivation to produce in situ finely divided black pigments in the conversion layer.
- Treatment solutions for producing such black passivations are described, for example, in the document EP 1 970 470 A1 described.
- Such treatment solutions contain, in addition to Cr 3+ and Co 2+ ions, nitrate ions and at least two different carboxylic acids.
- Iron has the disadvantage that the corrosion protection of the system is significantly weakened by the incorporation of iron-containing pigments.
- the patent JP 2005-206872 describes a Cr 6+ ion-free treatment solution for producing black passivations which, in addition to Cr 3+ ions, contains at least one further ion selected from the group consisting of sulfate, chloride, ions of the oxo acids of chlorine and nitrate, and a sulfur compound.
- the black conversion layers thus produced contain chromium ions.
- the font JP 2005-187925 describes processing solutions for the preparation of colored passivation layers containing Cr 3+ ions, other metal ions and an organic sulfur compound.
- the black conversion layers thus produced contain chromium ions.
- the font JP 2005-187838 also describes aqueous treatment solutions to produce black colored passivation layers containing ions at least one of Ni and Co and a sulfur compound.
- the black conversion layers thus formed contain nickel and / or cobalt ions.
- the invention has for its object to provide reaction solutions and methods for increasing the corrosion protection and blackening zink ambiencer surfaces available, which are free of toxic metals such as chromium and cobalt.
- a method that combines the ecological and occupational medical advantage of a chromium and cobalt-free passivation with a decorative high-quality black color impression is therefore desirable.
- the invention is based on the use of sulfur-containing compounds in a chromium ion and cobalt ion-free, aqueous, acidic matrix. With such treatment solutions, black colored conversion layers can be produced on zinc and its alloys.
- the sulfur compounds of the formula (1) and (2) are added to the treatment solution of the present invention in an amount of 0.2 g / L to 500 g / L, preferably 1 g / L to 100 g / L, and most preferably 3 g / L to 20 g / l added.
- the oxo cations of the formula M ' O c d + are preferably added in the form of their nitrates, sulfates and halides to the treatment solution according to the invention, from which the oxo cations form by hydrolysis in the treatment solution.
- zirconyl sulfate ZrO (SO 4 )
- ZrO 2+ zirconyl sulfate
- suitable oxo-cations are MnO +, VO 3+, VO 2+, WO 2 2+, MoO 2 2+, TiO 2+, ZrO 2+, and mixtures thereof.
- Particularly preferred oxo cations are those of titanium and zirconium.
- the oxo cations are added to the treating solution in an amount of 0.02 g / L to 50 g / L, preferably 0.05 g / L to 10 g / L, and most preferably 0.1 g / L to 5 g / L.
- halogen complex ions of the formula M "X a b are in the form of their metal salts, preferably their alkali metal salts, more preferably their sodium and potassium salts are added.
- the halogen complex of the formula M are preferred" X a b, consisting of A group comprising BF 4 - , TiF 6 2- , ZrF 6 2- , SiF 6 2- , AlF 6 3- , and mixtures thereof are selected. Particularly preferred are the halogen complex ions SiF 6 2- , TiF 6 2- and ZrF 6 2- .
- halogen complex anions of the formula M "X a b" are added to the treatment solution according to the invention in an amount of 0.02 g / l to 100 g / l, preferably 0.05 g / l to 50 g / l and most preferably 0.1 g / l to 10 g / l added.
- the treatment solution according to the invention can either contain at least one oxo cation of the formula M ' O c d + with M ' equal to Mn, V, Ti, W, Mo, Zr or at least one halogen complexion of the formula M " X a b
- the treatment solution contains a mixture of both at least one oxo cation and at least one halogen complex ion. This embodiment is preferred because it results in increased corrosion resistance of the metal layer (see Examples 3 to 7).
- the at least one oxidizing agent in the treatment solution according to the invention is selected from the group comprising hydrogen peroxide, organic peroxides, alkali metal peroxides, persulfates, perborates, nitrates and mixtures thereof.
- the most preferred oxidizing agent is hydrogen peroxide.
- the at least one oxidizing agent is added to the treating solution in an amount of 0.2 g / L to 100 g / L, preferably 1 g / L to 50 g / L, and most preferably 5 g / L to 30 g / L.
- the pH is adjusted by means of an acid or base to a value in the range from 0.5 to 5.0, preferably in the range from 1.0 to 3.0, particularly preferably in the range from 1.3 to 2.0.
- an acid or base is used as the preferred base sodium hydroxide solution.
- the application of the treatment solution according to the invention for the production of anticorrosive coatings takes place by direct treatment of the metal surfaces with the treatment solution, by immersing or pivoting the substrate to be coated in or with the treatment solution.
- Application by dipping or panning is preferably carried out at a temperature of the treating solution in the range of 20 to 100 ° C, preferably 30 to 70 ° C, more preferably 40 to 60 ° C, and most preferably about 50 ° C.
- the most suitable treatment time for the preparation of anticorrosive coatings by immersion or pivoting of the substrate to be coated in or with the treatment solution varies depending on various parameters, such.
- the treatment time is in the range of 5 to 180 s, preferably in the range of 30 to 120 s.
- the thus deposited black conversion layers already produce a good corrosion protection with respect to the formation of zinc corrosion products on zinc-containing surfaces.
- the described conversion layers can be subjected to conventional aftertreatment processes.
- This includes, for example, seals based on silicates, organofunctional silanes and nanoscale SiO 2 , and polymer dispersions.
- the sealing layers produced by the subsequent treatment improve the barrier effect of the underlying conversion layer and thus additionally improve the corrosion protection of the entire coating system.
- the pH is adjusted to pH 1.6 at 50 ° C. with NaOH.
- a sheet of low-alloy steel is, after suitable pretreatment in an alkaline galvanizing electrolyte (Protolux® 3000, a product of Atotech GmbH, containing 12 g / l zinc and 120 g / l NaOH) coated with 10 microns zinc.
- Alkaline galvanizing electrolyte Protolux® 3000, a product of Atotech GmbH, containing 12 g / l zinc and 120 g / l NaOH
- the sheet is rinsed after galvanizing and dipped directly into the above prepared treatment solution. After 60 s treatment time with slight movement the sheet is removed, rinsed and dried. It has a multicolored iridescent surface.
- a treatment solution for producing conversion layers as described in Comparative Example 1 is mixed with 10 g / l of thioglycolic acid and the pH is adjusted to pH 1.6 (50 ° C.) with NaOH.
- a sheet of low-alloy steel is coated after appropriate pretreatment in an alkaline galvanizing electrolyte (Protolux® 3000, a product of Atotech GmbH, containing 12 g / l zinc and 120 g / l NaOH) with 8-15 microns zinc.
- Alkaline galvanizing electrolyte Protolux® 3000, a product of Atotech GmbH, containing 12 g / l zinc and 120 g / l NaOH
- the sheet is rinsed after galvanizing and dipped directly into the treatment solution prepared above. After 60 s treatment time with slight movement, the sheet is removed, rinsed and dried. It has a deep black surface.
- a treatment solution for producing conversion layers as described in Comparative Example 1 is admixed with 11 g / l of 3-thiopropionic acid and the pH is adjusted to pH 1.6 (50 ° C.) with NaOH.
- a sheet of low-alloy steel is coated after suitable pretreatment in an alkaline galvanizing electrolyte (Protolux® 3000) with 10 ⁇ m zinc.
- the sheet is rinsed after galvanizing and dipped directly into the treatment solution prepared above. After 60 s treatment time with slight movement, the sheet is removed, rinsed and dried. It has a deep black surface.
- a treatment solution for producing conversion layers is admixed with 11 g / l dithiodiglycolic acid and the pH is adjusted to pH 1.6 (50 ° C.) with NaOH.
- a sheet of low-alloy steel is coated after suitable pretreatment in an alkaline galvanizing electrolyte (Protolux® 3000) with 10 ⁇ m zinc.
- the sheet is rinsed after galvanizing and dipped directly into the treatment solution prepared above. After 60 s treatment time with slight movement, the sheet is removed, rinsed and dried. It has a deep black surface.
- the sheet with the surface thus produced is dried at 80 ° C in a convection oven for 15 min and the corrosion protection in the neutral salt spray test according to ISO 9227 NSS tested.
- the sheet had a life of 48 hours until the appearance of zinc corrosion products> 5% of the area.
- a sheet with a surface produced according to Embodiment 3 is rinsed, immersed in a sealing solution consisting of a silicate-containing polyurethane dispersion (Corrosil® Plus 501, a product of Atotech GmbH) and dried at 80 ° C in a convection oven for 15 min.
- the sheet had a life of 120 h until the appearance of zinc corrosion products> 5% of the area.
- a sealing solution usually used for increasing the corrosion protection can therefore also be used on the chromium- and cobalt-free black conversion layers according to the invention.
- a treatment solution for the production of conversion layers as described in Comparative Example 1 is mixed with 13 g / l of thiolactic acid and the pH is adjusted to pH 1.6 (50 ° C.) with NaOH.
- a sheet of low-alloy steel is coated after suitable pretreatment in an alkaline galvanizing electrolyte (Protolux® 3000) with 10 ⁇ m zinc.
- the sheet is rinsed after galvanizing and dipped directly into the treatment solution prepared above. After 60 s treatment time with slight movement, the sheet is removed, rinsed and dried. It has a deep black surface.
- the sheet with the surface thus produced is dried at 80 ° C in a convection oven for 15 min and the corrosion protection in the neutral salt spray test according to ISO 9227 NSS tested.
- the sheet had a life of 48 hours until the appearance of zinc corrosion products> 5% of the area.
- the pH is adjusted to pH 1.6 at 50 ° C. with HNO 3 .
- a sheet of low-alloy steel is coated after suitable pretreatment in an alkaline galvanizing electrolyte (Protolux® 3000) with 10 ⁇ m zinc.
- the sheet is rinsed after galvanizing and dipped directly into the treatment solution prepared above. After 60 s treatment time with slight movement the sheet is removed, rinsed and dried. It has a deep black surface.
- the sheet with the surface thus produced is dried at 80 ° C in a convection oven for 15 min and the corrosion protection in the neutral salt spray test according to ISO 9227 NSS tested.
- the sheet had a life of 24 h until the appearance of zinc corrosion products> 5% of the area.
- the pH is adjusted to pH 1.6 at 50 ° C. with NaOH.
- a sheet of low-alloy steel is coated after suitable pretreatment in an alkaline galvanizing electrolyte (Protolux® 3000) with 10 ⁇ m zinc.
- the sheet is rinsed after galvanizing and dipped directly into the treatment solution prepared above. After 60 s treatment time with slight movement, the sheet is removed, rinsed and dried. It has a deep black surface.
- the sheet with the surface thus produced is dried at 80 ° C in a convection oven for 15 min and the corrosion protection in the neutral salt spray test according to ISO 9227 NSS tested.
- the sheet had a life of 24 h until the appearance of zinc corrosion products> 5% of the area.
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- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES09171140T ES2372146T3 (es) | 2009-09-23 | 2009-09-23 | Solución de tratamiento para generar capas de conversión negras libres de cromo y de cobalto. |
EP09171140A EP2309027B1 (fr) | 2009-09-23 | 2009-09-23 | Solution de traitement pour la production de couches de conversion noires sans chrome ni cobalt |
AT09171140T ATE525495T1 (de) | 2009-09-23 | 2009-09-23 | Behandlungslösung zur erzeugung chrom- und cobalt-freier schwarzer konversionsschichten |
JP2012530209A JP5669848B2 (ja) | 2009-09-23 | 2010-09-08 | クロム及びコバルトを有さない黒色化成被覆を製造するための処理溶液 |
KR1020127007303A KR101692093B1 (ko) | 2009-09-23 | 2010-09-08 | 크롬 및 코발트 미함유 흑색 변환 코팅 제조용 처리 용액 |
BR112012006456-8A BR112012006456B1 (pt) | 2009-09-23 | 2010-09-08 | solução de tratamento para produzir revestimentos de conversão pretos sem cromo e cobalto |
US13/394,362 US9005373B2 (en) | 2009-09-23 | 2010-09-08 | Treatment solution for producing chrome and cobalt-free black conversion coatings |
CN201080042409.XA CN102575354B (zh) | 2009-09-23 | 2010-09-08 | 用于制备无铬和钴的黑色转化涂层的处理溶液 |
PCT/EP2010/063178 WO2011036058A1 (fr) | 2009-09-23 | 2010-09-08 | Solution de traitement pour la production de revêtements de conversion noirs sans chrome et sans cobalt |
Applications Claiming Priority (1)
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EP09171140A EP2309027B1 (fr) | 2009-09-23 | 2009-09-23 | Solution de traitement pour la production de couches de conversion noires sans chrome ni cobalt |
Publications (2)
Publication Number | Publication Date |
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EP2309027A1 true EP2309027A1 (fr) | 2011-04-13 |
EP2309027B1 EP2309027B1 (fr) | 2011-09-21 |
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EP09171140A Active EP2309027B1 (fr) | 2009-09-23 | 2009-09-23 | Solution de traitement pour la production de couches de conversion noires sans chrome ni cobalt |
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Country | Link |
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US (1) | US9005373B2 (fr) |
EP (1) | EP2309027B1 (fr) |
JP (1) | JP5669848B2 (fr) |
KR (1) | KR101692093B1 (fr) |
CN (1) | CN102575354B (fr) |
AT (1) | ATE525495T1 (fr) |
BR (1) | BR112012006456B1 (fr) |
ES (1) | ES2372146T3 (fr) |
WO (1) | WO2011036058A1 (fr) |
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CN102560467A (zh) * | 2012-02-14 | 2012-07-11 | 济南德锡科技有限公司 | 一种高耐蚀镀锌黑色钝化剂及其配制方法 |
DE102012017438A1 (de) * | 2012-09-04 | 2014-03-06 | Carl Freudenberg Kg | Behandlungslösung und Verfahren zur Beschichtung von Metalloberflächen |
CN108796486A (zh) * | 2018-07-31 | 2018-11-13 | 广州传福化学技术有限公司 | 一种镀锌黑色钝化剂及镀锌钝化方法 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0405340A1 (fr) * | 1989-06-27 | 1991-01-02 | Henkel Corporation | Traitement de surface noircissant pour surfaces contenant du zinc |
JP2005187838A (ja) | 2003-12-24 | 2005-07-14 | Nippon Parkerizing Co Ltd | 金属表面処理液および金属表面処理方法 |
JP2005187925A (ja) | 2003-12-26 | 2005-07-14 | Taihoo:Kk | 金属表面処理剤、金属表面処理液、これによって形成された耐食性着色皮膜、この耐食性着色皮膜を有する耐食性着色部品、およびこの耐食性着色部品の製造方法 |
JP2005206872A (ja) | 2004-01-22 | 2005-08-04 | Nippon Hyomen Kagaku Kk | 黒色被膜剤及び黒色被膜形成方法 |
EP1970470A1 (fr) | 2007-03-05 | 2008-09-17 | Atotech Deutschland Gmbh | Passivation noire sans chrome(VI) pour surfaces contenant du zinc |
WO2008119675A1 (fr) | 2007-03-29 | 2008-10-09 | Atotech Deutschland Gmbh | Moyen de réalisation de couches de protection contre la corrosion sur des surfaces métalliques |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US20040156999A1 (en) * | 2003-02-07 | 2004-08-12 | Pavco, Inc. | Black trivalent chromium chromate conversion coating |
JP4798755B2 (ja) * | 2005-05-26 | 2011-10-19 | 株式会社サンビックス | 改良された黒色防錆処理金属、黒色防錆皮膜形成用処理液のセットおよび黒色防錆皮膜形成方法 |
-
2009
- 2009-09-23 AT AT09171140T patent/ATE525495T1/de active
- 2009-09-23 EP EP09171140A patent/EP2309027B1/fr active Active
- 2009-09-23 ES ES09171140T patent/ES2372146T3/es active Active
-
2010
- 2010-09-08 WO PCT/EP2010/063178 patent/WO2011036058A1/fr active Application Filing
- 2010-09-08 US US13/394,362 patent/US9005373B2/en active Active
- 2010-09-08 KR KR1020127007303A patent/KR101692093B1/ko active IP Right Grant
- 2010-09-08 CN CN201080042409.XA patent/CN102575354B/zh active Active
- 2010-09-08 JP JP2012530209A patent/JP5669848B2/ja active Active
- 2010-09-08 BR BR112012006456-8A patent/BR112012006456B1/pt active IP Right Grant
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0405340A1 (fr) * | 1989-06-27 | 1991-01-02 | Henkel Corporation | Traitement de surface noircissant pour surfaces contenant du zinc |
JP2005187838A (ja) | 2003-12-24 | 2005-07-14 | Nippon Parkerizing Co Ltd | 金属表面処理液および金属表面処理方法 |
JP2005187925A (ja) | 2003-12-26 | 2005-07-14 | Taihoo:Kk | 金属表面処理剤、金属表面処理液、これによって形成された耐食性着色皮膜、この耐食性着色皮膜を有する耐食性着色部品、およびこの耐食性着色部品の製造方法 |
JP2005206872A (ja) | 2004-01-22 | 2005-08-04 | Nippon Hyomen Kagaku Kk | 黒色被膜剤及び黒色被膜形成方法 |
EP1970470A1 (fr) | 2007-03-05 | 2008-09-17 | Atotech Deutschland Gmbh | Passivation noire sans chrome(VI) pour surfaces contenant du zinc |
WO2008119675A1 (fr) | 2007-03-29 | 2008-10-09 | Atotech Deutschland Gmbh | Moyen de réalisation de couches de protection contre la corrosion sur des surfaces métalliques |
Also Published As
Publication number | Publication date |
---|---|
US9005373B2 (en) | 2015-04-14 |
CN102575354A (zh) | 2012-07-11 |
KR101692093B1 (ko) | 2017-01-02 |
WO2011036058A1 (fr) | 2011-03-31 |
EP2309027B1 (fr) | 2011-09-21 |
CN102575354B (zh) | 2014-02-19 |
JP5669848B2 (ja) | 2015-02-18 |
ES2372146T3 (es) | 2012-01-16 |
US20120186702A1 (en) | 2012-07-26 |
BR112012006456A2 (pt) | 2017-07-18 |
JP2013505362A (ja) | 2013-02-14 |
KR20120073239A (ko) | 2012-07-04 |
ATE525495T1 (de) | 2011-10-15 |
BR112012006456B1 (pt) | 2021-02-09 |
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