EP1409157A2 - Couche noire anticorrosive sur un alliage de zinc et son procede de preparation - Google Patents
Couche noire anticorrosive sur un alliage de zinc et son procede de preparationInfo
- Publication number
- EP1409157A2 EP1409157A2 EP01958148A EP01958148A EP1409157A2 EP 1409157 A2 EP1409157 A2 EP 1409157A2 EP 01958148 A EP01958148 A EP 01958148A EP 01958148 A EP01958148 A EP 01958148A EP 1409157 A2 EP1409157 A2 EP 1409157A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- acid
- solution
- zinc alloy
- layer
- anticorrosive
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 37
- 229910001297 Zn alloy Inorganic materials 0.000 title claims abstract description 32
- 239000011248 coating agent Substances 0.000 title abstract description 7
- 238000000576 coating method Methods 0.000 title abstract description 7
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 12
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 11
- 229920000620 organic polymer Polymers 0.000 claims abstract description 11
- 239000000049 pigment Substances 0.000 claims abstract description 10
- 239000008139 complexing agent Substances 0.000 claims abstract description 9
- 238000000151 deposition Methods 0.000 claims abstract 2
- 239000000243 solution Substances 0.000 claims description 61
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 18
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 15
- 238000005260 corrosion Methods 0.000 claims description 11
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 9
- 229910019142 PO4 Inorganic materials 0.000 claims description 9
- -1 polyethylene Polymers 0.000 claims description 9
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 8
- ACVYVLVWPXVTIT-UHFFFAOYSA-M phosphinate Chemical compound [O-][PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-M 0.000 claims description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 235000012239 silicon dioxide Nutrition 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 5
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 4
- 150000002500 ions Chemical class 0.000 claims description 4
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 4
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 230000002378 acidificating effect Effects 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 235000006408 oxalic acid Nutrition 0.000 claims description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 2
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 2
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 2
- 235000011054 acetic acid Nutrition 0.000 claims description 2
- 239000004202 carbamide Substances 0.000 claims description 2
- 235000015165 citric acid Nutrition 0.000 claims description 2
- 235000019253 formic acid Nutrition 0.000 claims description 2
- 229960002449 glycine Drugs 0.000 claims description 2
- 235000013905 glycine and its sodium salt Nutrition 0.000 claims description 2
- NBZBKCUXIYYUSX-UHFFFAOYSA-N iminodiacetic acid Chemical compound OC(=O)CNCC(O)=O NBZBKCUXIYYUSX-UHFFFAOYSA-N 0.000 claims description 2
- 239000004310 lactic acid Substances 0.000 claims description 2
- 235000014655 lactic acid Nutrition 0.000 claims description 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims description 2
- 239000011976 maleic acid Substances 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 239000002105 nanoparticle Substances 0.000 claims description 2
- 239000010452 phosphate Substances 0.000 claims description 2
- 229910001404 rare earth metal oxide Inorganic materials 0.000 claims description 2
- 239000011975 tartaric acid Substances 0.000 claims description 2
- 235000002906 tartaric acid Nutrition 0.000 claims description 2
- 239000004408 titanium dioxide Substances 0.000 claims description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 2
- 229920002554 vinyl polymer Polymers 0.000 claims description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 claims 1
- 239000007900 aqueous suspension Substances 0.000 abstract description 18
- BFGKITSFLPAWGI-UHFFFAOYSA-N chromium(3+) Chemical compound [Cr+3] BFGKITSFLPAWGI-UHFFFAOYSA-N 0.000 abstract description 2
- 239000011260 aqueous acid Substances 0.000 abstract 1
- 239000011651 chromium Substances 0.000 description 39
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 24
- 229910000831 Steel Inorganic materials 0.000 description 16
- 239000010959 steel Substances 0.000 description 16
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 14
- 239000011701 zinc Substances 0.000 description 14
- 229910052804 chromium Inorganic materials 0.000 description 13
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 150000003839 salts Chemical class 0.000 description 10
- 230000007797 corrosion Effects 0.000 description 9
- 229910000640 Fe alloy Inorganic materials 0.000 description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 8
- 235000021317 phosphate Nutrition 0.000 description 8
- 230000035939 shock Effects 0.000 description 8
- 239000007921 spray Substances 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 7
- 241001163841 Albugo ipomoeae-panduratae Species 0.000 description 6
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 6
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 5
- 239000002253 acid Substances 0.000 description 5
- GRWVQDDAKZFPFI-UHFFFAOYSA-H chromium(III) sulfate Chemical compound [Cr+3].[Cr+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O GRWVQDDAKZFPFI-UHFFFAOYSA-H 0.000 description 5
- 229910017604 nitric acid Inorganic materials 0.000 description 5
- 238000002161 passivation Methods 0.000 description 5
- 239000001993 wax Substances 0.000 description 5
- KWSLGOVYXMQPPX-UHFFFAOYSA-N 5-[3-(trifluoromethyl)phenyl]-2h-tetrazole Chemical compound FC(F)(F)C1=CC=CC(C2=NNN=N2)=C1 KWSLGOVYXMQPPX-UHFFFAOYSA-N 0.000 description 4
- 229920006243 acrylic copolymer Polymers 0.000 description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 4
- PHFQLYPOURZARY-UHFFFAOYSA-N chromium trinitrate Chemical compound [Cr+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O PHFQLYPOURZARY-UHFFFAOYSA-N 0.000 description 4
- 229910001379 sodium hypophosphite Inorganic materials 0.000 description 4
- 229910052725 zinc Inorganic materials 0.000 description 4
- 239000006229 carbon black Substances 0.000 description 3
- VQWFNAGFNGABOH-UHFFFAOYSA-K chromium(iii) hydroxide Chemical compound [OH-].[OH-].[OH-].[Cr+3] VQWFNAGFNGABOH-UHFFFAOYSA-K 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 235000010755 mineral Nutrition 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 229910000990 Ni alloy Inorganic materials 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001246 colloidal dispersion Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- ACVYVLVWPXVTIT-UHFFFAOYSA-N phosphinic acid Chemical class O[PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-N 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- GAWIXWVDTYZWAW-UHFFFAOYSA-N C[CH]O Chemical group C[CH]O GAWIXWVDTYZWAW-UHFFFAOYSA-N 0.000 description 1
- 229910021193 La 2 O 3 Inorganic materials 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 1
- 229910007567 Zn-Ni Inorganic materials 0.000 description 1
- 229910007564 Zn—Co Inorganic materials 0.000 description 1
- 229910007614 Zn—Ni Inorganic materials 0.000 description 1
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 229910052910 alkali metal silicate Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 238000001479 atomic absorption spectroscopy Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 229910000420 cerium oxide Inorganic materials 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 238000004532 chromating Methods 0.000 description 1
- 150000001844 chromium Chemical class 0.000 description 1
- WYYQVWLEPYFFLP-UHFFFAOYSA-K chromium(3+);triacetate Chemical compound [Cr+3].CC([O-])=O.CC([O-])=O.CC([O-])=O WYYQVWLEPYFFLP-UHFFFAOYSA-K 0.000 description 1
- 229910000356 chromium(III) sulfate Inorganic materials 0.000 description 1
- 239000011696 chromium(III) sulphate Substances 0.000 description 1
- 235000015217 chromium(III) sulphate Nutrition 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 229940044175 cobalt sulfate Drugs 0.000 description 1
- 229910000361 cobalt sulfate Inorganic materials 0.000 description 1
- KTVIXTQDYHMGHF-UHFFFAOYSA-L cobalt(2+) sulfate Chemical compound [Co+2].[O-]S([O-])(=O)=O KTVIXTQDYHMGHF-UHFFFAOYSA-L 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229940079827 sodium hydrogen sulfite Drugs 0.000 description 1
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 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
- C23C22/48—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/51—One specific pretreatment, e.g. phosphatation, chromatation, in combination with one specific coating
-
- 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
- C23C22/07—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 phosphates
- C23C22/08—Orthophosphates
- C23C22/10—Orthophosphates containing oxidants
-
- 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
- C23C22/46—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 oxalates
-
- 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
- C23C2222/00—Aspects relating to chemical surface treatment of metallic material by reaction of the surface with a reactive medium
- C23C2222/10—Use of solutions containing trivalent chromium but free of hexavalent chromium
Definitions
- the invention relates to a black anticorrosive layer formed from two layers on a zinc alloy and to a method for preparing this anticorrosive layer.
- metallic surfaces for example steel surfaces, are coated with a zinc alloy (for example Zn-Fe, Zn-Ni, Zn-Co, Zn-Mn).
- a zinc alloy for example Zn-Fe, Zn-Ni, Zn-Co, Zn-Mn.
- the deposit of alloyed zinc can then be protected by a chromating layer. This can be obtained by treating the deposit of alloyed zinc with a solution containing Cr 6+ .
- solutions containing Cr 6+ is no longer desired for reasons of toxicity and environmental protection.
- US Pat. No. 5,415,702 proposes instead of treating a zinc / nickel or zinc / iron alloy with an acid solution containing Cr 3+ ions and phosphate ions.
- the surface thus coated with chromate can be brought into contact with an alkali metal silicate solution.
- an organic coating for example a paint
- This process has the following drawbacks: the protection against corrosion of a layer prepared by this process on a zinc / iron alloy is not sufficient compared to that of a layer prepared by this process on a zinc / iron alloy nickel. In addition, the protection against corrosion of a layer prepared by this process on a zinc / iron alloy is defective after heating for one hour beyond 150JC (thermal shock). Finally, it may occur due to the silicate coating after a certain time, very little desired white traces on the surface. In addition, the surface prepared by this process exhibits adhesion insufficient for subsequent painting.
- the present invention aims to overcome the drawbacks of the prior art, to further improve the protection of zinc alloys against corrosion, and in particular to provide an anticorrosive black layer on zinc alloys which after one hour heating up to 120 ° C or up to 150 ° C or in some cases beyond (thermal shock) and a salt spray test according to DIN 50 021 corrosion resistance greater than 200 h.
- the invention further aims to give the anticorrosive layer a uniform black appearance which cannot be changed over time.
- the method according to the invention is characterized in that it consists in treating the zinc alloy in a first step with an acidic aqueous solution of Cr 3+ , containing a complexing agent or several complexing agents, and in treating the alloy of zinc thus passive in a second stage of the process with an aqueous solution containing an organic polymer, an anticorrosive metal oxide and optionally a black pigment.
- the anticorrosion coating produced on a zinc alloy according to the invention consists of a superposition of two individual layers, prepared according to a method according to the invention, the first layer having a layer weight (expressed in Cr) from 1 to 4 mg / dm 2 .
- the process described according to the invention consists of two stages.
- the deposit of alloyed zinc is treated with an acidic aqueous solution of Cr 3+ free of Cr 6+ containing one or more complexing agents.
- the deposit is thus passive.
- the treatment time ranges from 20 to 400 seconds.
- a preferred treatment time is between 60 and 240 seconds.
- the passive zinc alloy, rinsed and drained is treated with an aqueous suspension containing organic polymers, anticorrosive metal oxides and possibly black pigments.
- the treatment time ranges from 5 to 120 seconds.
- the zinc alloy thus treated can be dried in hot air (for example between 50 and 75 ° C, preferably at 70 ° C).
- the pH of the Cr 3+ acid solution will be between 1 and 4, preferably between 1 and 3.
- the pH is preferably adjusted using mineral acids such as HNO 3 , H 2 SO 4 , HCI or H 3 PO 4 .
- Treatment of the zinc alloy with the passivation solution and by the suspension can be carried out in different ways, for example by immersion, by projection, with the brush or with the roller. The immersion application will be used preferentially.
- the temperature of the Cr 3+ solution used in the first step of the process is between 20 and 80 ° C, preferably between 25 and 60 ° C; the temperature of the aqueous suspension used in the second step of the process is between 15 and 35 ° C, preferably between 20 and 30 ° C.
- Trivalent chromium can be introduced into the solution in the form of trivalent chromium salts, for example CrCI 3 , 6H 2 O, Cr (NO 3 ) 3 , 9H 2 O, chromium (III) acetate or in the form trivalent chromium sulphate ("pure" chromium sulphate or chromium sulphate and other cations such as for example KCr (SO 4 ) 2 -12H 2 O).
- a Cr 3+ solution can be prepared from a Cr 6+ solution with the addition of a mineral acid in the presence of a reducing agent such as formaldehyde or sodium hydrogen sulfite.
- the lower limit of the chromium content of the solution (expressed as Cr 3+ ) is 1 g / l (which corresponds to 0.02 mol / l), preferably 5 g per liter (which corresponds to 0 , 1 mol / l); the upper limit of the chromium (III) content of the solution is 30 g / l (which corresponds to 0.58 mol / l), but preferably 20 g / l (which corresponds to 0.38 mol / l).
- the solution contains one or more complexing agents such as phosphates, hypophosphites, acid salts organic (e.g. citric acid, oxalic acid, tartaric acid, malonic acid, maleic acid, formic acid, acetic acid, lactic acid, aminoacetic acid, l 'iminodiacetic acid) or urea.
- complexing agents such as citric acid, oxalic acid, tartaric acid, malonic acid, maleic acid, formic acid, acetic acid, lactic acid, aminoacetic acid, l 'iminodiacetic acid
- Phosphates will be used preferentially because they particularly favor the formation of a dark conversion layer.
- the phosphates act as a "proton reservoir", these protons allow to activate and maintain the passivation process of the zinc alloy deposit.
- the phosphates will be incorporated for example in the form of Na 3 PO 4 , Na 2 HPO 4 , NaH 2 P0 4 or in the form of phosphoric acid.
- Phosphates can be present for a minimum concentration in the solution (expressed as PO 4 3 " ) of 10 g / l (which corresponds to 0.01 mol / l), preferably 15 g / l (which corresponds to 0.15 mol / l).
- the upper limit of the phosphate concentration in the solution is preferably 44 g / l (which corresponds to 0.42 mol / l), in particular preferably 25 g / l (which corresponds to 0.26 mol / l l).
- Hypophosphite can be added (for example in the form of an alkali metal hypophosphite such as NaH 2 PO 2 or in the form of hypophosphorous acid), alone or preferably with phosphates.
- An advantageous effect of hypophosphite lies in the fact that it delays the precipitation of chromium hydroxide in the solution on the surface of the zinc alloy until a pH of 4.5.
- hypophosphite Without addition of hypophosphite, chromium hydroxide precipitates from a pH of the solution of 3.0.
- the minimum concentration of hypophosphite (expressed as H 2 PO 2 " ) is 0.08 mol / l, and preferably 0.23 mol / l.
- the upper limit of the hypophosphite concentration is 0.65 mol / l and preferably 0.5 mol / l and more preferably 0.45 mol / l.
- the other complexing agents mentioned can be incorporated at a level of 0.025 mol / l to 0.6 mol / l with a preference in particular for the range between 0.06 and 0.2 mol / l. It is preferable to use them at the same time as phosphates and / or hipophosphite. Protection against corrosion can also be improved as well as the uniformity of the black color by the addition of ions of the elements iron, molybdenum, cobalt and / or nickel to the Cr 3+ solution. The amounts to be added can for example be between 0.001 mol / l and 0.1 mol / l.
- the protection against corrosion and the adhesion of the topcoat can be improved by incorporating into the passivation solution silicon dioxide in the form of colloidal particles such as, for example, the Ludox AM30 dispersion sold by the company Du Bridge.
- the amount incorporated may be between 0.07 mol / l and 1.3 mol / l.
- the passivation layer or stratum 1 has a thickness of between 0.5 and 5 ⁇ and preferably between 0.5 ⁇ and 1, 5 ⁇
- the aqueous suspension used in the second step of the process contains organic polymers, anticorrosive metal oxides and possibly black pigments.
- the organic polymers used are of the copolymer type acrylic, methacrylic or vinyl resins. They are polymers of the ester of acrylic acid or of methacrylic acid and they can have, as alcoholic constituent, an alkyl group which is unsubstituted or substituted by functional groups, for example a methyl, ethyl, propyl, isopropyl group, n-butyl, isobutyl, tert-butyl, pentyl and hexyl and their isomers and higher homologs, 2-ethylhexyl, phenoxyethyl, hydroxyethyl, 2-hydroxypropyl, caprolactone-hydroxyethyl or dimethylaminoethyl.
- the commercially available acrylate copolymers are, for example, Lugalvan DC from the company BASF or Carb
- polyethylene waxes may also be used (in the form of an emulsion, for example, Polygene PE from the company BASF or Luciwax EN 41 from the company Morton).
- the waxes advantageously increase the wear resistance of the surfaces and make it possible to obtain, depending on the wax used, advantageous sliding properties such as a low friction coefficient of between 0.08 and 0.18.
- the use of suitable waxes in the suspension makes it possible to obtain constant coefficient of friction values of ⁇ 0.03.
- the amount of organic polymers added (expressed respectively as dry matter) is in total from 5 to 150 g / l, preferably from 10 to 100 g / l.
- a combination of 5 to 90 g / l of acrylate or methacrylate copolymer and 1 to 60 g / l of polyethylene wax has been found to be very favorable.
- anticorrosive metal oxides it is possible to use silicon dioxide, titanium dioxide, zirconium dioxide, and / or rare earth oxides such as cerium oxide or La 2 O 3 or Y 2 O 3 or Ces metal oxides are preferably used in the form of an aqueous suspension of nanoparticles.
- concentration of metal oxides (based on solid matter) in the aqueous suspension used in the second step of the process is preferably from 20 to 60 g / l with in particular a preference for the interval between 30 and 45 g / l.
- the metal oxides are fixed by organic polymers.
- the introduction of mineral substances into the anticorrosive layer in this form has, compared to the known treatment with solutions of these substances (for example sodium silicate solutions) the advantage of improving the protection against corrosion and maintain the uniform black color of the anticorrosive layer over time.
- the uniform black appearance of the anticorrosive layer can be further reinforced by adding carbon black pigments (for example Derussol P130 from Degussa) or other pigments but such as Sanodal Black sold by Clariant in the suspension.
- aqueous used during the second step of the process.
- the concentration of carbon black pigments in the aqueous suspension is between 5 and 20 g / l.
- the friction layer or second layer deposited in the second stage has a thickness of 0.5 to 5 ⁇ and preferably 0.5 to 2.5 ⁇ .
- the anticorrosive layer thus has in all a thickness generally between 1 ⁇ and 5 ⁇ and preferably between 1 ⁇ and 4 ⁇ .
- the anticorrosive layer produced in two stages according to the method according to the invention which has just been described on galvanized metal surfaces has a layer weight in the first layer (expressed in Cr) of 0.5 to 4 mg / dm 2 .
- the chromium layer formed (first layer) is dissolved on the galvanized metal surface after the first step of the process (passivation) with 10% hydrochloric acid and the chromium content is determined using a atomic absorption spectroscopy.
- the second layer of the anticorrosive layer consists of anticorrosive metal oxides, black pigments and, where appropriate, other additives incorporated in organic polymers.
- the aqueous suspension making it possible to produce the second layer consists of 90 g / l of a colloidal dispersion containing 44% of particles of silicon dioxide in water (Ludox AS 40 from the company Du Pont), of 50 g / l a 27% acrylic copolymer (Carboset 560 from the company BF Goodrich) and 70 g / l of an ethylene grafted acrylic copolymer (Lugalvan DC from the company BASF).
- 50 g / l of a 20% carbon black dispersion (Derussol P 130 from Degussa) are introduced as black pigment into the aqueous solution.
- Standard steel plates of 100 mm x 70 mm are coated in a conventional manner with a zinc / iron alloy (Fe 0.5%), they are activated in a solution of nitric acid at 5 ml / l , then after rinsing they are immersed for about 180 seconds in the Cr 3+ solution (temperature of the solution 25 ° C), they are rinsed, they are drained in a stream of air (room temperature), they are soaked for About 30 seconds in the aqueous suspension and they are dried for about 15 minutes in a stream of hot air (70 ° C). The appearance of the plates is then uniform black.
- the chromium content of the anticorrosion layer is (before treatment with the aqueous suspension) 2 mg / dm 2 .
- the steel plates thus treated are brought for 1 h at 150 ° C. (thermal shock) and they are then subjected to a salt spray test according to DIN 50 021. An appearance of white rust is observed after 300 h.
- EXAMPLE 2 60 g of a solution of chromium nitrate (chromium content 11.5%) are diluted in 200 ml of water. 20 g of 85% phosphoric acid, 0.3 g of 69% nitric acid and 75 g of colloidal silica dispersion type Ludox AM 30 are added thereto and the volume is adjusted to 1 liter with water. The pH is adjusted between 1.5 and 1.6 using a 50% NaOH solution.
- Standard steel plates are coated in a conventional manner 100 mm x 70 mm of a zinc / nickel alloy (Ni 12 to 15%), they are soaked for approximately 90 seconds in the Cr 3+ solution (solution temperature 25 ° C), they are rinsed, they are drained in a stream of air (room temperature), they are soaked for about 30 seconds in the aqueous suspension (of Example 1) and they are dried for about 10 minutes in a stream of hot air (70 ° VS).
- the steel plates have a uniform black appearance.
- the chromium content of the anticorrosion layer is (before treatment with the aqueous suspension)> 2 mg / dm 2 .
- the steel plates thus treated are brought for 1 h to 120 ° C (thermal shock) and then subjected to a salt spray test according to DIN 50 021. The parts do not show white rust after 240 hours and no red rust after 800 hours.
- Example 3 The Cr 3+ solution consists of 55 g / l of Chromitan
- the aqueous suspension making it possible to produce the second layer consists of 90 g / l of a colloidal dispersion containing 44% of particles of silicon dioxide in water (Ludox AS40 from the company Du Pont), of 50 g / l of a 27% acrylic copolymer (Carboset 560 from BF Gooirich) and 70 g / l of an ethylene grafted acrylic copolymer (Cugalvan DC from BASF)
- Standard steel plates of 100 mm x 70 mm are coated with a zinc / iron alloy (Fe 0.5%), they are cleaned, they are immersed for about 240 seconds in the solution of Cr 3+ (temperature of the solution 25 ° C), they are rinsed, they are drained in a stream of air (room temperature), they are soaked for about 30 seconds in the aqueous suspension described above and they are dried for about 15 minutes in a stream of hot air (70 ° C). The appearance of the plates is then uniform black.
- the chromium content of the anticorrosion layer is (before treatment with the aqueous suspension) greater than 2 mg / dm 2 .
- the solution is filtered on a filter paper having a pore diameter of 100 ⁇ m and it is brought for 2 h at 60 ° C.
- the pH is adjusted between 2.3 and 2.5 with a 50% NaOH solution.
- To this solution is added 1 g of cobalt sulfate CoSO 4 , 7H 2 O.
- Standard steel plates of 100 mm x 70 mm are coated with a zinc / iron alloy (Fe 0.5%), they are activated in a 5 ml / l nitric acid solution, soak them for approximately 60 seconds in the Cr 3+ solution (solution temperature 25 ° C), rinse them and drain them in a stream of air (room temperature). The appearance of the plates is then uniform black.
- the chromium content of the anticorrosion layer is greater than 2 mg / dm 2 .
- the steel plates thus treated are immersed for approximately 30 seconds in the aqueous suspension (example 1) and they are dried for approximately 15 minutes in a stream of hot air (70 ° C.), they are brought for 24 h to 120 ° C (thermal shock) and they are then subjected to a salt spray test according to DIN 50021. After 300 h, no white rust is observed.
- KCr (SO 4 ) 2 , 12H 2 O 100 g of KCr (SO 4 ) 2 , 12H 2 O are dissolved in 200 ml of water. 20 g of NaOH are dissolved in approximately 100 ml and added to them. The mixture is brought to 80 ° C. for 1 h. After cooling to approximately 25 ° C., 20 g of sodium hypophosphite, 20 g of citric acid, 15 g of 85% phosphoric acid, 0.6 g of 69% nitric acid and 100 g of sodium hydroxide are added. typical silica dispersion Ludox AM30, then complete the 1 I solution with water. The pH of the solution is 2.5.
- Standard steel plates of 100 mm x 70 mm are coated with a zinc / iron alloy (Fe 0.5%), they are activated in a 5 ml / l nitric acid solution, soak them for 180 seconds in the Cr 3+ solution (solution temperature 25 ° C), rinse and drain in a stream of air (room temperature).
- the steel plates have a uniform black appearance.
- the chromium content of the anticorrosive layer is between 2 and 4 mg / dm 2 .
- the steel plates are soaked for approximately 30 seconds in the aqueous suspension (of Example 1) and they are dried for approximately 15 minutes in a stream of hot air (70 ° C.), they are heated for 24 h at 120 ° C (thermal shock) and then subjected to a salt spray test according to DIN 50 021. After 200 h, no white rust is observed.
- Standard steel plates of 100 mm x 70 mm are coated with a zinc / nickel alloy (Ni 15%) 12 ⁇ m thick, they are quenched for 75 seconds in the Cr 3+ solution (temperature of the solution 25 ° C.), they are rinsed and they are drained in a stream of air (room temperature).
- the steel plates have a uniform black appearance.
- the chromium content of the anticorrosive layer is 2 mg / dm 2 .
- the steel plates are soaked for approximately 30 seconds in the aqueous suspension (of Example 3) and they are dried for approximately 15 minutes in a stream of hot air (70 ° C.).
- the plates are then brought for 1 h at 120 ° C. (thermal shock), and they are then subjected to a salt spray test according to DIN 50 021. After 200 h, no white rust is observed, and after 800 h there is no red rust observed.
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- Chemical & Material Sciences (AREA)
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- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Treatment Of Metals (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Paints Or Removers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0009716 | 2000-07-25 | ||
| FR0009716A FR2812307B1 (fr) | 2000-07-25 | 2000-07-25 | Couche noire anticorrosive sur un alliage de zinc et son procede de preparation |
| PCT/FR2001/002376 WO2002007902A2 (fr) | 2000-07-25 | 2001-07-20 | Couche noir anticorrosive sur un alliage de zinc et son procede de preparation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1409157A2 true EP1409157A2 (fr) | 2004-04-21 |
| EP1409157B1 EP1409157B1 (fr) | 2007-04-11 |
Family
ID=8852874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01958148A Expired - Lifetime EP1409157B1 (fr) | 2000-07-25 | 2001-07-20 | Couche noire anticorrosive sur un alliage de zinc et son procede de preparation |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1409157B1 (fr) |
| DE (1) | DE60127870T2 (fr) |
| ES (1) | ES2282278T3 (fr) |
| FR (1) | FR2812307B1 (fr) |
| WO (1) | WO2002007902A2 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3771748A1 (fr) * | 2019-07-30 | 2021-02-03 | Dr.Ing. Max Schlötter GmbH & Co. KG | Passivation noire sans chrome (vi) et sans cobalt pour surfaces nickel-zinc |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3774415B2 (ja) * | 2002-03-14 | 2006-05-17 | ディップソール株式会社 | 亜鉛及び亜鉛合金めっき上に黒色の六価クロムフリー化成皮膜を形成するための処理溶液及び亜鉛及び亜鉛合金めっき上に黒色の六価クロムフリー化成皮膜を形成する方法。 |
| US20050109426A1 (en) | 2002-03-14 | 2005-05-26 | Dipsol Chemicals Co., Ltd. | Processing solution for forming hexavalent chromium free, black conversion film on zinc or zinc alloy plating layers, and method for forming hexavalent chromium free, black conversion film on zinc or zinc alloy plating layers |
| US20040156999A1 (en) * | 2003-02-07 | 2004-08-12 | Pavco, Inc. | Black trivalent chromium chromate conversion coating |
| EP1765944A1 (fr) * | 2004-07-02 | 2007-03-28 | Henkel Kommanditgesellschaft Auf Aktien | Lubrifiant de film sec |
| US20070243397A1 (en) * | 2006-04-17 | 2007-10-18 | Ludwig Robert J | Chromium(VI)-free, aqueous acidic chromium(III) conversion solutions |
| ES2444406T3 (es) | 2007-06-14 | 2014-02-24 | Atotech Deutschland Gmbh | Tratamiento anti-corrosión para capas de conversión |
| EP2281923A1 (fr) | 2009-07-03 | 2011-02-09 | ATOTECH Deutschland GmbH | Traitement de protection anticorrosion pour surfaces en zinc et alliages de zinc |
| DE102009045569A1 (de) | 2009-10-12 | 2011-04-14 | Dr.-Ing. Max Schlötter GmbH & Co KG | Schwarzpassivierung von Zink- und Zinkeisenschichten |
| JP2013249528A (ja) * | 2012-06-04 | 2013-12-12 | Dipsol Chemicals Co Ltd | アルミ変性コロイダルシリカを含有した3価クロム化成処理液 |
| JP6283857B2 (ja) * | 2013-08-28 | 2018-02-28 | ディップソール株式会社 | 耐食性及び黒色外観に優れた車両用黒色締結部材 |
| ES2747838T3 (es) | 2014-04-16 | 2020-03-11 | Doerken Ewald Ag | Procedimiento para producir un revestimiento protector contra la corrosión oscuro |
| ES2556680B1 (es) * | 2014-07-18 | 2016-11-03 | Moreda - Riviere Trefilerías, S.A. | Alambre recubierto, procedimiento de obtención del mismo y malla que lo comprende |
| EP3246429A1 (fr) * | 2016-05-20 | 2017-11-22 | ATOTECH Deutschland GmbH | Composition aqueuse pour la passivation de surfaces en zinc et procédé de passivation de surfaces en zinc |
| ES2646237B2 (es) | 2017-09-28 | 2018-07-27 | Avanzare Innovacion Tecnologica S.L. | Formulación para el mordentado de materiales poliméricos previo al recubrimiento de los mismos |
| JP2017226925A (ja) * | 2017-10-05 | 2017-12-28 | ディップソール株式会社 | アルミ変性コロイダルシリカを含有した3価クロム化成処理液 |
| CN113490767A (zh) | 2019-02-28 | 2021-10-08 | 德国艾托特克公司 | 水性后处理组合物和腐蚀保护方法 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3392008B2 (ja) * | 1996-10-30 | 2003-03-31 | 日本表面化学株式会社 | 金属の保護皮膜形成処理剤と処理方法 |
| US3900689A (en) * | 1970-04-02 | 1975-08-19 | Du Pont | Substrates treated with chromium(iii) complexes to increase the adhesion of organic polymers thereto |
| CA1228000A (fr) * | 1981-04-16 | 1987-10-13 | David E. Crotty | Solution et procede de passivation, donnant un aspect chrome |
| JP2844953B2 (ja) * | 1991-03-29 | 1999-01-13 | 日本鋼管株式会社 | 溶接可能な着色鋼板 |
| US5415702A (en) * | 1993-09-02 | 1995-05-16 | Mcgean-Rohco, Inc. | Black chromium-containing conversion coatings on zinc-nickel and zinc-iron alloys |
| EP0970757B1 (fr) * | 1998-07-07 | 2002-10-30 | Kabushiki Kaisha Nippankenkyusho | Revêtement protecteur contre la rouille et procédé pour sa fabrication |
| US6224657B1 (en) * | 1998-10-13 | 2001-05-01 | Sermatech International, Inc. | Hexavalent chromium-free phosphate-bonded coatings |
-
2000
- 2000-07-25 FR FR0009716A patent/FR2812307B1/fr not_active Expired - Fee Related
-
2001
- 2001-07-20 ES ES01958148T patent/ES2282278T3/es not_active Expired - Lifetime
- 2001-07-20 DE DE60127870T patent/DE60127870T2/de not_active Expired - Lifetime
- 2001-07-20 WO PCT/FR2001/002376 patent/WO2002007902A2/fr not_active Ceased
- 2001-07-20 EP EP01958148A patent/EP1409157B1/fr not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0207902A3 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3771748A1 (fr) * | 2019-07-30 | 2021-02-03 | Dr.Ing. Max Schlötter GmbH & Co. KG | Passivation noire sans chrome (vi) et sans cobalt pour surfaces nickel-zinc |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2812307A1 (fr) | 2002-02-01 |
| DE60127870T2 (de) | 2008-01-17 |
| DE60127870D1 (de) | 2007-05-24 |
| WO2002007902A3 (fr) | 2002-06-20 |
| WO2002007902A2 (fr) | 2002-01-31 |
| EP1409157B1 (fr) | 2007-04-11 |
| ES2282278T3 (es) | 2007-10-16 |
| FR2812307B1 (fr) | 2003-02-14 |
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