EP3899089A1 - Anticorrosion treatment solution and uses - Google Patents
Anticorrosion treatment solution and usesInfo
- Publication number
- EP3899089A1 EP3899089A1 EP19848930.4A EP19848930A EP3899089A1 EP 3899089 A1 EP3899089 A1 EP 3899089A1 EP 19848930 A EP19848930 A EP 19848930A EP 3899089 A1 EP3899089 A1 EP 3899089A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- solution
- aluminum
- salts
- metal surface
- chemical compound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000011282 treatment Methods 0.000 title claims abstract description 24
- 238000005260 corrosion Methods 0.000 claims abstract description 39
- 230000007797 corrosion Effects 0.000 claims abstract description 34
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 29
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000000576 coating method Methods 0.000 claims abstract description 29
- 150000001875 compounds Chemical class 0.000 claims abstract description 28
- 229910052751 metal Inorganic materials 0.000 claims abstract description 22
- 239000002184 metal Substances 0.000 claims abstract description 22
- 239000011651 chromium Substances 0.000 claims abstract description 19
- 239000011248 coating agent Substances 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 18
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 17
- 239000008139 complexing agent Substances 0.000 claims abstract description 13
- 230000002401 inhibitory effect Effects 0.000 claims abstract description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 23
- 150000003839 salts Chemical class 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 19
- 150000002500 ions Chemical class 0.000 claims description 10
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 9
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 238000005238 degreasing Methods 0.000 claims description 7
- 235000019797 dipotassium phosphate Nutrition 0.000 claims description 7
- 230000001590 oxidative effect Effects 0.000 claims description 7
- 238000005554 pickling Methods 0.000 claims description 7
- 239000012286 potassium permanganate Substances 0.000 claims description 7
- -1 rare earth salts Chemical class 0.000 claims description 7
- ZPWVASYFFYYZEW-UHFFFAOYSA-L dipotassium hydrogen phosphate Chemical compound [K+].[K+].OP([O-])([O-])=O ZPWVASYFFYYZEW-UHFFFAOYSA-L 0.000 claims description 6
- 230000003647 oxidation Effects 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 claims description 6
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical class [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 claims description 6
- 239000011734 sodium Substances 0.000 claims description 6
- 229910052684 Cerium Inorganic materials 0.000 claims description 5
- 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 claims description 5
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 5
- 229910000396 dipotassium phosphate Inorganic materials 0.000 claims description 5
- MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical class [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 claims description 5
- 229910052708 sodium Inorganic materials 0.000 claims description 5
- DXIGZHYPWYIZLM-UHFFFAOYSA-J tetrafluorozirconium;dihydrofluoride Chemical compound F.F.F[Zr](F)(F)F DXIGZHYPWYIZLM-UHFFFAOYSA-J 0.000 claims description 5
- 239000010936 titanium Substances 0.000 claims description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- OCUCCJIRFHNWBP-IYEMJOQQSA-L Copper gluconate Chemical class [Cu+2].OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O.OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O OCUCCJIRFHNWBP-IYEMJOQQSA-L 0.000 claims description 3
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
- 229920000388 Polyphosphate Polymers 0.000 claims description 3
- 150000001242 acetic acid derivatives Chemical class 0.000 claims description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 3
- 150000001860 citric acid derivatives Chemical class 0.000 claims description 3
- 150000004675 formic acid derivatives Chemical class 0.000 claims description 3
- 150000002505 iron Chemical class 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 150000002894 organic compounds Chemical class 0.000 claims description 3
- 150000003891 oxalate salts Chemical class 0.000 claims description 3
- 229940085991 phosphate ion Drugs 0.000 claims description 3
- 239000001205 polyphosphate Substances 0.000 claims description 3
- 235000011176 polyphosphates Nutrition 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- 150000004761 hexafluorosilicates Chemical class 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- YOYLLRBMGQRFTN-SMCOLXIQSA-N norbuprenorphine Chemical compound C([C@@H](NCC1)[C@]23CC[C@]4([C@H](C3)C(C)(O)C(C)(C)C)OC)C3=CC=C(O)C5=C3[C@@]21[C@H]4O5 YOYLLRBMGQRFTN-SMCOLXIQSA-N 0.000 claims description 2
- 239000010452 phosphate Substances 0.000 claims description 2
- 238000007781 pre-processing Methods 0.000 claims description 2
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- PBYZMCDFOULPGH-UHFFFAOYSA-N tungstate Chemical compound [O-][W]([O-])(=O)=O PBYZMCDFOULPGH-UHFFFAOYSA-N 0.000 claims description 2
- LSGOVYNHVSXFFJ-UHFFFAOYSA-N vanadate(3-) Chemical compound [O-][V]([O-])([O-])=O LSGOVYNHVSXFFJ-UHFFFAOYSA-N 0.000 claims description 2
- 150000003754 zirconium Chemical class 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 22
- 239000004411 aluminium Substances 0.000 abstract 1
- 239000000565 sealant Substances 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 description 18
- 239000000956 alloy Substances 0.000 description 18
- 238000006243 chemical reaction Methods 0.000 description 18
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 10
- 238000007739 conversion coating Methods 0.000 description 9
- 239000010410 layer Substances 0.000 description 9
- 239000007921 spray Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000007654 immersion Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 5
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 description 5
- 239000003112 inhibitor Substances 0.000 description 5
- 239000003973 paint Substances 0.000 description 5
- 238000004381 surface treatment Methods 0.000 description 5
- 229910052726 zirconium Inorganic materials 0.000 description 5
- 238000004040 coloring Methods 0.000 description 4
- 239000011572 manganese Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000002966 varnish Substances 0.000 description 4
- 239000007836 KH2PO4 Substances 0.000 description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 238000002048 anodisation reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052748 manganese Inorganic materials 0.000 description 3
- 229910000402 monopotassium phosphate Inorganic materials 0.000 description 3
- 235000019796 monopotassium phosphate Nutrition 0.000 description 3
- 235000011007 phosphoric acid Nutrition 0.000 description 3
- GNSKLFRGEWLPPA-UHFFFAOYSA-M potassium dihydrogen phosphate Chemical compound [K+].OP(O)([O-])=O GNSKLFRGEWLPPA-UHFFFAOYSA-M 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000001464 adherent effect Effects 0.000 description 2
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 2
- 229910001430 chromium ion Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 235000021317 phosphate Nutrition 0.000 description 2
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 2
- 229960003975 potassium Drugs 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- SCVFZCLFOSHCOH-UHFFFAOYSA-M potassium acetate Chemical compound [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 description 2
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 description 1
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 description 1
- JHWIEAWILPSRMU-UHFFFAOYSA-N 2-methyl-3-pyrimidin-4-ylpropanoic acid Chemical compound OC(=O)C(C)CC1=CC=NC=N1 JHWIEAWILPSRMU-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical class [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910018182 Al—Cu Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- USFZMSVCRYTOJT-UHFFFAOYSA-N Ammonium acetate Chemical compound N.CC(O)=O USFZMSVCRYTOJT-UHFFFAOYSA-N 0.000 description 1
- 239000005695 Ammonium acetate Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- RGHNJXZEOKUKBD-SQOUGZDYSA-M D-gluconate Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O RGHNJXZEOKUKBD-SQOUGZDYSA-M 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000005569 Iron sulphate Substances 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 239000012425 OXONE® Substances 0.000 description 1
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical class OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 1
- HLCFGWHYROZGBI-JJKGCWMISA-M Potassium gluconate Chemical compound [K+].OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O HLCFGWHYROZGBI-JJKGCWMISA-M 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- 239000004280 Sodium formate Substances 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910000611 Zinc aluminium Inorganic materials 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- HXFVOUUOTHJFPX-UHFFFAOYSA-N alumane;zinc Chemical compound [AlH3].[Zn] HXFVOUUOTHJFPX-UHFFFAOYSA-N 0.000 description 1
- 235000019257 ammonium acetate Nutrition 0.000 description 1
- 229940043376 ammonium acetate Drugs 0.000 description 1
- VZTDIZULWFCMLS-UHFFFAOYSA-N ammonium formate Chemical compound [NH4+].[O-]C=O VZTDIZULWFCMLS-UHFFFAOYSA-N 0.000 description 1
- VBIXEXWLHSRNKB-UHFFFAOYSA-N ammonium oxalate Chemical compound [NH4+].[NH4+].[O-]C(=O)C([O-])=O VBIXEXWLHSRNKB-UHFFFAOYSA-N 0.000 description 1
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- XKGUZGHMWUIYDR-UHFFFAOYSA-N benzyl n-(3-fluoro-4-morpholin-4-ylphenyl)carbamate Chemical compound C=1C=C(N2CCOCC2)C(F)=CC=1NC(=O)OCC1=CC=CC=C1 XKGUZGHMWUIYDR-UHFFFAOYSA-N 0.000 description 1
- 239000004227 calcium gluconate Substances 0.000 description 1
- 235000013927 calcium gluconate Nutrition 0.000 description 1
- 229960004494 calcium gluconate Drugs 0.000 description 1
- NEEHYRZPVYRGPP-UHFFFAOYSA-L calcium;2,3,4,5,6-pentahydroxyhexanoate Chemical compound [Ca+2].OCC(O)C(O)C(O)C(O)C([O-])=O.OCC(O)C(O)C(O)C(O)C([O-])=O NEEHYRZPVYRGPP-UHFFFAOYSA-L 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000013626 chemical specie Substances 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 229940055042 chromic sulfate Drugs 0.000 description 1
- 229940117975 chromium trioxide Drugs 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N chromium trioxide Inorganic materials O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- BFGKITSFLPAWGI-UHFFFAOYSA-N chromium(3+) Chemical compound [Cr+3] BFGKITSFLPAWGI-UHFFFAOYSA-N 0.000 description 1
- GAMDZJFZMJECOS-UHFFFAOYSA-N chromium(6+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Cr+6] GAMDZJFZMJECOS-UHFFFAOYSA-N 0.000 description 1
- 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 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
- 239000000470 constituent Substances 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 description 1
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 description 1
- IRXRGVFLQOSHOH-UHFFFAOYSA-L dipotassium;oxalate Chemical compound [K+].[K+].[O-]C(=O)C([O-])=O IRXRGVFLQOSHOH-UHFFFAOYSA-L 0.000 description 1
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical class [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 description 1
- 235000019800 disodium phosphate Nutrition 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- VEPSWGHMGZQCIN-UHFFFAOYSA-H ferric oxalate Chemical compound [Fe+3].[Fe+3].[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O VEPSWGHMGZQCIN-UHFFFAOYSA-H 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229940050410 gluconate Drugs 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 229910001234 light alloy Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- AMWRITDGCCNYAT-UHFFFAOYSA-L manganese oxide Inorganic materials [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 1
- PPNAOCWZXJOHFK-UHFFFAOYSA-N manganese(2+);oxygen(2-) Chemical class [O-2].[Mn+2] PPNAOCWZXJOHFK-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- HJKYXKSLRZKNSI-UHFFFAOYSA-I pentapotassium;hydrogen sulfate;oxido sulfate;sulfuric acid Chemical compound [K+].[K+].[K+].[K+].[K+].OS([O-])(=O)=O.[O-]S([O-])(=O)=O.OS(=O)(=O)O[O-].OS(=O)(=O)O[O-] HJKYXKSLRZKNSI-UHFFFAOYSA-I 0.000 description 1
- 125000005385 peroxodisulfate group Chemical group 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- 235000011056 potassium acetate Nutrition 0.000 description 1
- CHKVPAROMQMJNQ-UHFFFAOYSA-M potassium bisulfate Chemical compound [K+].OS([O-])(=O)=O CHKVPAROMQMJNQ-UHFFFAOYSA-M 0.000 description 1
- 229910000343 potassium bisulfate Inorganic materials 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- 239000001508 potassium citrate Substances 0.000 description 1
- 229960002635 potassium citrate Drugs 0.000 description 1
- QEEAPRPFLLJWCF-UHFFFAOYSA-K potassium citrate (anhydrous) Chemical compound [K+].[K+].[K+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O QEEAPRPFLLJWCF-UHFFFAOYSA-K 0.000 description 1
- 235000011082 potassium citrates Nutrition 0.000 description 1
- WFIZEGIEIOHZCP-UHFFFAOYSA-M potassium formate Chemical compound [K+].[O-]C=O WFIZEGIEIOHZCP-UHFFFAOYSA-M 0.000 description 1
- 239000004224 potassium gluconate Substances 0.000 description 1
- 235000013926 potassium gluconate Nutrition 0.000 description 1
- 229960003189 potassium gluconate Drugs 0.000 description 1
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003376 silicon Chemical class 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 239000001509 sodium citrate Substances 0.000 description 1
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 1
- HLBBKKJFGFRGMU-UHFFFAOYSA-M sodium formate Chemical compound [Na+].[O-]C=O HLBBKKJFGFRGMU-UHFFFAOYSA-M 0.000 description 1
- 235000019254 sodium formate Nutrition 0.000 description 1
- 239000000176 sodium gluconate Substances 0.000 description 1
- 235000012207 sodium gluconate Nutrition 0.000 description 1
- 229940005574 sodium gluconate Drugs 0.000 description 1
- ZNCPFRVNHGOPAG-UHFFFAOYSA-L sodium oxalate Chemical compound [Na+].[Na+].[O-]C(=O)C([O-])=O ZNCPFRVNHGOPAG-UHFFFAOYSA-L 0.000 description 1
- 229940039790 sodium oxalate Drugs 0.000 description 1
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- NVKTUNLPFJHLCG-UHFFFAOYSA-N strontium chromate Chemical compound [Sr+2].[O-][Cr]([O-])(=O)=O NVKTUNLPFJHLCG-UHFFFAOYSA-N 0.000 description 1
- PMTRSEDNJGMXLN-UHFFFAOYSA-N titanium zirconium Chemical compound [Ti].[Zr] PMTRSEDNJGMXLN-UHFFFAOYSA-N 0.000 description 1
- YWYZEGXAUVWDED-UHFFFAOYSA-N triammonium citrate Chemical compound [NH4+].[NH4+].[NH4+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O YWYZEGXAUVWDED-UHFFFAOYSA-N 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 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
- C23C22/36—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 containing also phosphates
- C23C22/364—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 containing also phosphates containing also manganese cations
-
- 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
- C23C22/40—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 molybdates, tungstates or vanadates
- C23C22/44—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 molybdates, tungstates or vanadates containing also 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
- C23C22/46—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
- C23C22/47—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 containing also phosphates
-
- 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
- C23C22/73—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 characterised by the process
-
- 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
- C23C22/78—Pretreatment of the material to be coated
-
- 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
-
- 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/12—Light metals
- C23G1/125—Light metals aluminium
-
- 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
- C23G1/22—Light metals
Definitions
- the present invention relates to a solution devoid of chromium in all its oxidation states, to a process for treating a metallic surface, comprising the application, on this surface, of the solution, as well as to a coating of a metallic surface capable of being obtained by the treatment process.
- compositions based on hexavalent chromium include, for example, chromium trioxide (CrC> 3), potassium dichromate K2O2O7, sodium dichromate Na 2 Cr0 7 , or strontium chromate SrCr0 4 .
- chromium trioxide CrC> 3
- potassium dichromate K2O2O7 potassium dichromate K2O2O7
- sodium dichromate Na 2 Cr0 7 sodium dichromate Na 2 Cr0 7
- strontium chromate SrCr0 4 strontium chromate SrCr0 4
- hexavalent chromium is listed in the dangerous substances prohibited by the REACH regulation (Registration, Evaluation, Authorization and restriction of CHemicals), which aims to protect human health and the environment from the risks linked to chemical substances, while promoting the competitiveness of the chemical industry in the European Union. Its use has been completely prohibited since 2017.
- composition based on hexavalent chromium Another alternative to using a composition based on hexavalent chromium consists in using solutions based on phosphate compounds (F. Andreatta et al.: “Addition of phosphates or copper nitrate in a fluotitanate conversion coating containing a silane coupling agent for aluminum alloy AA6014 ", Progress in Organic Coatings, 77 (2014) 2107-2115 ([3])), of compounds of titanium and zirconium in a fluorinated medium (P.
- Nordlien et al. "Formation of a zirconium-titanium based conversion layer on AA 6060 aluminum", Surface and Coatings Technology, 153 (2002) 72-78 ([10])), of molybdenum or manganese ([6]) , or rare earths such as cerium (B. Valdez et al.: "Cerium-based conversion coatings to improve the corrosion resistance of aluminum alloy 6061 -T6", Corrosion Science, 87 (2014) 141 -149 ([4] ); P.
- Campestrini et al. “Formation of a cerium-based conversion coating on AA2024: relationship with the microstructure, Surface and Coatings Technology”, 176 (2004) 365-381 ([8])), or zirconium en m fluorinated area (Fl. R. Asemani et al. : "Effect of zirconium conversion coating: Adhesion and anti-corrosion properties of epoxy organic coating containing zinc aluminum polyphosphate (ZAPP) pigment on carbon mild Steel", Progress in Organic Coatings, 94 (2016) 18-27 ([5]); FO George et al. : “Formation of zirconium-based conversion coatings on aluminum and Al-Cu alloys”, Corrosion Science, 65 (2012) 231-237 ([7])).
- ZAPP zinc aluminum polyphosphate
- a colored passivating layer which may include manganese oxides (MnC> 2 (s), MnO (s)),
- the invention is of interest for the aeronautical sector (civil and military), impacted by the REACH regulation, in particular equipment manufacturers, aircraft manufacturers and engine manufacturers, as well as for sectors which use chemical conversion to chromium VI, such as automotive, building, street furniture.
- a first object of the invention relates to a solution devoid of chromium in all its oxidation states comprising:
- said solution having a pH ranging from 1 to 5.
- solution is meant, within the meaning of the present invention, a composition in the liquid state, in which parts comprising aluminum or an aluminum alloy can be dipped.
- the solution of the invention is advantageously a chemical conversion solution, that is to say adapted to be used in the context of a chemical conversion treatment, or allowing the chemical conversion of aluminum and its alloys.
- the alloy can also comprise at least one other component chosen from copper, silicon, magnesium, titanium and zinc. At least one other component may be present in the alloy at a weight percentage of between about 0.10 to about 21.00% by weight relative to the weight of the alloy.
- the aluminum alloy can be, for example, an alloy from the 2000 series of the classification of aluminum alloys (Aluminum Association, Washington DC 2006, United States), such as, for example, alloy 2024 or 2618, from the series 6000 or 7000 series, such as 7075 or 7175, for example.
- the solution of the invention may "include”, or "be made up”, of the elements indicated above. In the event that it "includes” the elements indicated, then it may include these elements as well as other elements, with the exception of chromium. If it is "made up of” these elements, then it includes only the elements listed above, to the exclusion of any other element.
- free of chromium in all its oxidation states is meant, within the meaning of the present invention, a total absence of chromium in the solution of the invention.
- the chromium ion can be in particular the chromate or dichromate.
- the absence of chromium may be due to the fact that no element containing chromium, in particular hexavalent chromium, is added during the process for preparing the solution of the invention.
- the pH of the solution can be from 1.0 to 5.0, the limits being included. It can for example be from 1.2 to 4.8, or from 1.5 to 4.5, or from 2.0 to 5.0, or from 2.2 to 4.8, or from 2.5 to 4.5, or from 3.0 to 4.0, or from 3.2 to 3.8, the limits being included.
- a strong acid such as sulfuric acid (H 2 SO 4 ) to lower the pH or a strong base such as potash (KOH) to increase the pH.
- the oxidizing chemical compound of the solution of the invention can be chosen from the group comprising permanganate salts, molybdate salts, persulfate salts and hydrogen peroxide, and mixtures thereof.
- the concentration of the oxidizing chemical compound in the solution can be between 0.01 and 0.45 mol / L, the limits being included, for example ranging from 0.05 to 0.40, or from 0.1 to 0 , 4, or from 0.2 to 0.3 mol / L, the limits being included.
- the permanganate or molybdate ions contained in the solution of the invention can be associated with any suitable type of counterion, for example potassium permanganate KMnÜ4 or permanganate of sodium NaMn0 4 and molybdate sodium Na2Mo04, potassium K2M0O4 or ammonium (NH4) 2Mo04.
- the permanganate ion is used because it is a source of manganese and the molybdate ion is used as a source of molydbene.
- the persulfate ion can be peroxomonosulfate SOs 2- or peroxodisulfate S 2 O8 2 ⁇ .
- the persulfate salt can for example be chosen from all the known persulfate salts, and for example among ammonium persulfate, sodium persulfate, potassium persulfate, potassium hydrogen sulfate and the triple salt of potassium monopersulfate.
- complexing agent within the meaning of the present invention, any compound making it possible to react with a metal, in particular aluminum and its alloys, and thus form a complex soluble compound.
- the aluminum complexing agent also plays the role of corrosion inhibitor.
- Corrosion can be evaluated by measuring the number of pits on the surface of the metal part, in a given time and under given conditions. The required properties are an absence of pitting after 168 hours of exposure to a salt spray test according to standard ASTM B117.
- the aluminum complexing agent contained in the solution of the invention may be a fluorinated salt or a mixture of fluorinated salts, an organic compound chosen from gluconates, citrates, oxalates, acetates and formates, or a mixture any of these.
- the fluorinated salt may for example be chosen from hexafluorozirconates, hexafluorotitanates, hexafluorosilicates and any mixture thereof.
- gluconates it may for example be sodium gluconate, potassium gluconate, calcium gluconate or ammonium gluconate.
- citrates it may for example be sodium citrate, potassium citrate or ammonium citrate.
- oxalates it can be sodium oxalate, potassium oxalate or ammonium oxalate.
- acetates it can be sodium acetate, potassium acetate or ammonium acetate.
- formates it may be sodium formate, potassium formate or ammonium formate.
- Corrosion inhibiting compound is understood to mean, within the meaning of the present invention, any compound capable of reducing the rate of corrosion of a metal surface under usual conditions of use.
- the corrosion inhibitor compound can be chosen from the rare earth, tungstate, vanadate, phosphate and cerium III salts, zirconium, titanium or silicon salts. These compounds can be introduced in a minority dose, for example from 0.1 to 5% by mass, in particular from 0.5 to 4.0% by mass, or from 1.0 to 3.0% by mass. mass.
- a single inhibitor or a mixture of inhibitors can be used to improve the corrosion resistance of the coating.
- the sealing agent capable of being contained in the solution of the invention may be a compound based on phosphate ions, phosphonates or polyphosphates or iron.
- the phosphate ion can be combined with any suitable type of counterion. It can be, for example, potassium or sodium hydrogenphosphates KH2PO4 , K2HPO4, NaFhPC or Na2HPC> 40 or phosphoric acid H3PO4.
- the phosphate ion can be used as a sealing agent, that is to say that it has the function of standardizing the thickness and the profile of chemical composition of the layer of manganese and aluminum oxides formed in order to make it more exciting.
- the sealing agent can also be an iron salt of the iron sulphate type Fe2 (SC> 4) 3, ferric chloride FeCb, potassium ferricyanide (K3Fe (CN) 6), gluconate or iron oxalate.
- the concentration of clogging agent may for example be between 0.001 and 0.20 mol / L, the limits being included, in particular from 0.010 to 0.18 mol / L, or from 0.050 to 0, 18 mol / L, or from 0.08 to 0.18 mol / L, or from 0.10 to 0.15 mol / L, the limits being included.
- the chemical conversion solution of the invention can be a solution in which:
- the oxidizing chemical compound is potassium permanganate
- the sealing agent when present, is a compound chosen from potassium hydrogen phosphate, phosphoric acid or an iron salt, and
- the complexing agent is a mixture of hexafluorozirconic acid, hexafluorotitanic acid, and hexafluorosilicic acid.
- the concentration of permanganate ion can be between 0.01 and 0.45 mol / L, the limits being included.
- the concentration can be, for example, from 0.05 to 0.40, or from 0.1 to 0.4, or from 0.2 to 0.3 mol / L, the limits being included.
- the concentration of phosphate ions can be between 0.001 and 0.20 mol / L, the limits being included.
- the concentration may for example be from 0.010 to 0.18 mol / L, or from 0.050 to 0.18 mol / L, or from 0.08 to 0.18 mol / L, or from 0.10 to 0.15 mol / L, the limits being included.
- the concentration of complexing agent can be between 0.001 and 0.15 mol / l, the limits being included.
- the concentration may for example be from 0.005 to 0.15 mol / L, or from 0.010 to 0.15 mol / L, or from 0.05 to 0.15 mol / L, or from 0.08 to 0.12 mol / L, the limits being included.
- Another object of the invention relates to a method of treating or coating a metal surface, comprising the application, on said surface, of a solution as defined above.
- the treatment may for example be an anticorrosion treatment.
- the method may further comprise at least one step of pretreatment of the surface.
- the method of the invention can consist of a single or a succession of pre-treatment steps, followed by a step of treatment with the solution of the invention.
- the preprocessing step can be of type (1), (2) or (3) below, and successively include the following steps:
- Each type of pre-treatment (1), (2) or (3) can include or consist of immersion in a bath maintained at a fixed temperature and for a defined time and then in two rinses in cascade with Demineralized Water.
- the treatment step may comprise or consist of immersion in a bath comprising or consisting of the solution of the invention, maintained at a fixed temperature and for a defined time and then in two rinses in cascade with water demineralized.
- concentrations of the different species during the preparation of the conversion bath can be as defined above in the context of the definition of the solution of the invention.
- the ion concentrations can be the following:
- the concentration of MnCV ions can be equal to 0.01-0.45 mol / L,
- the concentration of H2PO4 ions can be equal to 0.05-0.2 mol / L,
- the concentration of FhZrFe ions can be equal to 0.005-0.1 mol / L,
- the concentration of Ce ions (lll) can be equal to 0.003-0.3 mol / L
- the object to be treated can have a metallic surface made of aluminum or an aluminum alloy.
- the method of the invention can make it possible to produce a coating on a metal surface.
- another object of the invention relates to a coating of a metal surface capable of being obtained by the method of treatment of a surface as defined above.
- the coating of the invention can be a compact layer, of thickness less than 1 ⁇ m and adherent for the application of a varnish or a paint.
- other characteristics of this coating are possibly all or part of the following:
- Another object of the invention relates to a metal surface, in particular aluminum or aluminum alloy, comprising a coating as defined above.
- Another object of the invention relates to the use of a solution as defined above, for treating a metal surface, in particular aluminum or aluminum alloy.
- the treatment can be chosen from:
- the preparation of a chemical conversion solution consists in dissolving in water several salts of potassium permanganate, potassium hydrogen phosphates, cerium nitrates and hexafluorozirconic acid in the following proportions:
- the preparation is carried out at 60 ° C with a dissolution time of all the salts of approximately 1 h.
- Example 2 Treatment of a metallic surface of aluminum or alloy using the chemical conversion solution of the invention
- the treatment protocol for an aluminum or aluminum alloy part is broken down into several stages:
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
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- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
- Paints Or Removers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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FR1873546A FR3090694B1 (en) | 2018-12-20 | 2018-12-20 | Anti-Corrosion Treatment Solution and Uses |
PCT/FR2019/053191 WO2020128353A1 (en) | 2018-12-20 | 2019-12-19 | Anticorrosion treatment solution and uses |
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EP3899089A1 true EP3899089A1 (en) | 2021-10-27 |
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EP19848930.4A Pending EP3899089A1 (en) | 2018-12-20 | 2019-12-19 | Anticorrosion treatment solution and uses |
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US (1) | US20230193472A1 (en) |
EP (1) | EP3899089A1 (en) |
KR (1) | KR20210126552A (en) |
CN (1) | CN113544312A (en) |
CA (1) | CA3123826A1 (en) |
FR (1) | FR3090694B1 (en) |
WO (1) | WO2020128353A1 (en) |
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CN114874691B (en) * | 2022-06-20 | 2023-04-07 | 马鞍山钢铁股份有限公司 | Pre-priming integrated agent for color-coated sheet, preparation method of pre-priming-integrated agent, color-coated sheet and production method of color-coated sheet |
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US6193815B1 (en) * | 1995-06-30 | 2001-02-27 | Henkel Corporation | Composition and process for treating the surface of aluminiferous metals |
DE10323305B4 (en) * | 2003-05-23 | 2006-03-30 | Chemetall Gmbh | Process for coating metallic surfaces with a phosphating solution containing hydrogen peroxide, phosphating solution and use of the treated articles |
CN104294257A (en) * | 2013-07-19 | 2015-01-21 | 无锡永发电镀有限公司 | Technology for passivating aluminum alloy pieces applied to automobiles |
CN106048581A (en) * | 2016-08-11 | 2016-10-26 | 太仓市凯福士机械有限公司 | High-efficiency passivating solution used for electroplating |
CN108070852A (en) * | 2016-11-18 | 2018-05-25 | 中国科学院金属研究所 | One kind is applied to 2024 aluminum alloy surface titanium zirconium conversion fluids and its application method |
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2018
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2019
- 2019-12-19 WO PCT/FR2019/053191 patent/WO2020128353A1/en unknown
- 2019-12-19 US US17/312,680 patent/US20230193472A1/en active Pending
- 2019-12-19 KR KR1020217022105A patent/KR20210126552A/en unknown
- 2019-12-19 EP EP19848930.4A patent/EP3899089A1/en active Pending
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CN113544312A (en) | 2021-10-22 |
FR3090694B1 (en) | 2023-05-26 |
WO2020128353A1 (en) | 2020-06-25 |
KR20210126552A (en) | 2021-10-20 |
CA3123826A1 (en) | 2020-06-25 |
FR3090694A1 (en) | 2020-06-26 |
US20230193472A1 (en) | 2023-06-22 |
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