EP3250730A1 - Procédé de préparation d'une tôle revêtue comprenant l'application d'une solution aqueuse comprenant un aminoacide et utilisation associée pour améliorer la résistance à la corrosion - Google Patents
Procédé de préparation d'une tôle revêtue comprenant l'application d'une solution aqueuse comprenant un aminoacide et utilisation associée pour améliorer la résistance à la corrosionInfo
- Publication number
- EP3250730A1 EP3250730A1 EP16704480.9A EP16704480A EP3250730A1 EP 3250730 A1 EP3250730 A1 EP 3250730A1 EP 16704480 A EP16704480 A EP 16704480A EP 3250730 A1 EP3250730 A1 EP 3250730A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- amino acid
- aqueous solution
- metal coating
- salt
- mixture
- 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
- 150000001413 amino acids Chemical class 0.000 title claims abstract description 164
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 139
- 239000002184 metal Substances 0.000 title claims abstract description 138
- 239000007864 aqueous solution Substances 0.000 title claims abstract description 109
- 238000000034 method Methods 0.000 title claims abstract description 48
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 5
- 230000007797 corrosion Effects 0.000 title claims description 34
- 238000005260 corrosion Methods 0.000 title claims description 34
- 238000000576 coating method Methods 0.000 claims abstract description 163
- 239000011248 coating agent Substances 0.000 claims abstract description 150
- 239000011701 zinc Substances 0.000 claims abstract description 59
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 57
- 239000010959 steel Substances 0.000 claims abstract description 57
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 56
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 56
- 239000000758 substrate Substances 0.000 claims abstract description 46
- 235000001014 amino acid Nutrition 0.000 claims description 162
- 230000007935 neutral effect Effects 0.000 claims description 65
- 150000003839 salts Chemical class 0.000 claims description 65
- ONIBWKKTOPOVIA-UHFFFAOYSA-N Proline Natural products OC(=O)C1CCCN1 ONIBWKKTOPOVIA-UHFFFAOYSA-N 0.000 claims description 60
- 235000013930 proline Nutrition 0.000 claims description 60
- ONIBWKKTOPOVIA-BYPYZUCNSA-N L-Proline Chemical compound OC(=O)[C@@H]1CCCN1 ONIBWKKTOPOVIA-BYPYZUCNSA-N 0.000 claims description 58
- 239000000203 mixture Substances 0.000 claims description 56
- AYFVYJQAPQTCCC-UHFFFAOYSA-N Threonine Natural products CC(O)C(N)C(O)=O AYFVYJQAPQTCCC-UHFFFAOYSA-N 0.000 claims description 41
- 239000004473 Threonine Substances 0.000 claims description 41
- 235000008521 threonine Nutrition 0.000 claims description 41
- AYFVYJQAPQTCCC-GBXIJSLDSA-N L-threonine Chemical compound C[C@@H](O)[C@H](N)C(O)=O AYFVYJQAPQTCCC-GBXIJSLDSA-N 0.000 claims description 35
- 239000000853 adhesive Substances 0.000 claims description 29
- 230000001070 adhesive effect Effects 0.000 claims description 29
- 239000011777 magnesium Substances 0.000 claims description 20
- 150000001875 compounds Chemical class 0.000 claims description 19
- FFEARJCKVFRZRR-BYPYZUCNSA-N L-methionine Chemical compound CSCC[C@H](N)C(O)=O FFEARJCKVFRZRR-BYPYZUCNSA-N 0.000 claims description 17
- 235000006109 methionine Nutrition 0.000 claims description 17
- 229930182817 methionine Natural products 0.000 claims description 17
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 16
- CKLJMWTZIZZHCS-REOHCLBHSA-N L-aspartic acid Chemical compound OC(=O)[C@@H](N)CC(O)=O CKLJMWTZIZZHCS-REOHCLBHSA-N 0.000 claims description 15
- 235000018417 cysteine Nutrition 0.000 claims description 15
- XUJNEKJLAYXESH-UHFFFAOYSA-N cysteine Natural products SCC(N)C(O)=O XUJNEKJLAYXESH-UHFFFAOYSA-N 0.000 claims description 15
- QNAYBMKLOCPYGJ-REOHCLBHSA-N L-alanine Chemical compound C[C@H](N)C(O)=O QNAYBMKLOCPYGJ-REOHCLBHSA-N 0.000 claims description 14
- 235000004279 alanine Nutrition 0.000 claims description 14
- 235000003704 aspartic acid Nutrition 0.000 claims description 14
- OQFSQFPPLPISGP-UHFFFAOYSA-N beta-carboxyaspartic acid Natural products OC(=O)C(N)C(C(O)=O)C(O)=O OQFSQFPPLPISGP-UHFFFAOYSA-N 0.000 claims description 14
- MTCFGRXMJLQNBG-REOHCLBHSA-N (2S)-2-Amino-3-hydroxypropansäure Chemical compound OC[C@H](N)C(O)=O MTCFGRXMJLQNBG-REOHCLBHSA-N 0.000 claims description 13
- ZDXPYRJPNDTMRX-VKHMYHEASA-N L-glutamine Chemical compound OC(=O)[C@@H](N)CCC(N)=O ZDXPYRJPNDTMRX-VKHMYHEASA-N 0.000 claims description 13
- MTCFGRXMJLQNBG-UHFFFAOYSA-N Serine Natural products OCC(N)C(O)=O MTCFGRXMJLQNBG-UHFFFAOYSA-N 0.000 claims description 13
- 229910052782 aluminium Inorganic materials 0.000 claims description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 13
- 235000004554 glutamine Nutrition 0.000 claims description 13
- ZDXPYRJPNDTMRX-UHFFFAOYSA-N glutamine Natural products OC(=O)C(N)CCC(N)=O ZDXPYRJPNDTMRX-UHFFFAOYSA-N 0.000 claims description 13
- 235000004400 serine Nutrition 0.000 claims description 13
- XUJNEKJLAYXESH-REOHCLBHSA-N L-Cysteine Chemical compound SC[C@H](N)C(O)=O XUJNEKJLAYXESH-REOHCLBHSA-N 0.000 claims description 12
- 229910052749 magnesium Inorganic materials 0.000 claims description 12
- 239000000243 solution Substances 0.000 claims description 12
- 229910001297 Zn alloy Inorganic materials 0.000 claims description 10
- 239000004475 Arginine Substances 0.000 claims description 9
- ODKSFYDXXFIFQN-BYPYZUCNSA-P L-argininium(2+) Chemical compound NC(=[NH2+])NCCC[C@H]([NH3+])C(O)=O ODKSFYDXXFIFQN-BYPYZUCNSA-P 0.000 claims description 9
- KDXKERNSBIXSRK-YFKPBYRVSA-N L-lysine Chemical compound NCCCC[C@H](N)C(O)=O KDXKERNSBIXSRK-YFKPBYRVSA-N 0.000 claims description 9
- KDXKERNSBIXSRK-UHFFFAOYSA-N Lysine Natural products NCCCCC(N)C(O)=O KDXKERNSBIXSRK-UHFFFAOYSA-N 0.000 claims description 9
- 239000004472 Lysine Substances 0.000 claims description 9
- 235000009697 arginine Nutrition 0.000 claims description 9
- ODKSFYDXXFIFQN-UHFFFAOYSA-N arginine Natural products OC(=O)C(N)CCCNC(N)=N ODKSFYDXXFIFQN-UHFFFAOYSA-N 0.000 claims description 9
- 235000018977 lysine Nutrition 0.000 claims description 9
- 229910052791 calcium Inorganic materials 0.000 claims description 8
- 229910052804 chromium Inorganic materials 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 7
- 238000005246 galvanizing Methods 0.000 claims description 7
- 229910052719 titanium Inorganic materials 0.000 claims description 7
- 239000012535 impurity Substances 0.000 claims description 6
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 5
- 229910052718 tin Inorganic materials 0.000 claims description 5
- 229910052684 Cerium Inorganic materials 0.000 claims description 4
- 229910052797 bismuth Inorganic materials 0.000 claims description 4
- 229910052746 lanthanum Inorganic materials 0.000 claims description 4
- 229910052745 lead Inorganic materials 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 239000004519 grease Substances 0.000 claims description 3
- 229910000611 Zinc aluminium Inorganic materials 0.000 claims 1
- 229940024606 amino acid Drugs 0.000 description 125
- 238000012360 testing method Methods 0.000 description 18
- 238000011282 treatment Methods 0.000 description 15
- 229910001335 Galvanized steel Inorganic materials 0.000 description 9
- 239000008397 galvanized steel Substances 0.000 description 9
- 239000003921 oil Substances 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 229910021645 metal ion Inorganic materials 0.000 description 8
- 238000004381 surface treatment Methods 0.000 description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 7
- 239000002253 acid Substances 0.000 description 7
- 239000011575 calcium Substances 0.000 description 7
- 239000011651 chromium Substances 0.000 description 7
- 238000005406 washing Methods 0.000 description 7
- 241000282485 Vulpes vulpes Species 0.000 description 6
- 239000011133 lead Substances 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 239000010936 titanium Substances 0.000 description 6
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 5
- 230000032683 aging Effects 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 229910052708 sodium Inorganic materials 0.000 description 5
- 239000011734 sodium Substances 0.000 description 5
- 239000011135 tin Substances 0.000 description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 4
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 4
- 238000000137 annealing Methods 0.000 description 4
- 238000001912 gas jet deposition Methods 0.000 description 4
- 238000007654 immersion Methods 0.000 description 4
- 235000011007 phosphoric acid Nutrition 0.000 description 4
- 239000011591 potassium Substances 0.000 description 4
- 229910052700 potassium Inorganic materials 0.000 description 4
- 238000009864 tensile test Methods 0.000 description 4
- 210000002105 tongue Anatomy 0.000 description 4
- 208000035126 Facies Diseases 0.000 description 3
- VEQPNABPJHWNSG-UHFFFAOYSA-N Nickel(2+) Chemical compound [Ni+2] VEQPNABPJHWNSG-UHFFFAOYSA-N 0.000 description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 229910001429 cobalt ion Inorganic materials 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 238000005238 degreasing Methods 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 229910001453 nickel ion Inorganic materials 0.000 description 3
- 238000009304 pastoral farming Methods 0.000 description 3
- 230000035882 stress Effects 0.000 description 3
- 238000004846 x-ray emission Methods 0.000 description 3
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 3
- -1 zinc-aluminum-magnesium Chemical compound 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- WHUUTDBJXJRKMK-UHFFFAOYSA-N Glutamic acid Natural products OC(=O)C(N)CCC(O)=O WHUUTDBJXJRKMK-UHFFFAOYSA-N 0.000 description 2
- 239000004471 Glycine Substances 0.000 description 2
- WHUUTDBJXJRKMK-VKHMYHEASA-N L-glutamic acid Chemical compound OC(=O)[C@@H](N)CCC(O)=O WHUUTDBJXJRKMK-VKHMYHEASA-N 0.000 description 2
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000003556 assay Methods 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001962 electrophoresis Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 235000013922 glutamic acid Nutrition 0.000 description 2
- 239000004220 glutamic acid Substances 0.000 description 2
- 229910052735 hafnium Inorganic materials 0.000 description 2
- 229910000358 iron sulfate Inorganic materials 0.000 description 2
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 238000005240 physical vapour deposition Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229910021481 rutherfordium Inorganic materials 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 229910000368 zinc sulfate Inorganic materials 0.000 description 2
- 229960001763 zinc sulfate Drugs 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- DCXYFEDJOCDNAF-UHFFFAOYSA-N Asparagine Natural products OC(=O)C(N)CC(N)=O DCXYFEDJOCDNAF-UHFFFAOYSA-N 0.000 description 1
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 150000008575 L-amino acids Chemical class 0.000 description 1
- DCXYFEDJOCDNAF-REOHCLBHSA-N L-asparagine Chemical compound OC(=O)[C@@H](N)CC(N)=O DCXYFEDJOCDNAF-REOHCLBHSA-N 0.000 description 1
- KZSNJWFQEVHDMF-BYPYZUCNSA-N L-valine Chemical compound CC(C)[C@H](N)C(O)=O KZSNJWFQEVHDMF-BYPYZUCNSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- KZSNJWFQEVHDMF-UHFFFAOYSA-N Valine Natural products CC(C)C(N)C(O)=O KZSNJWFQEVHDMF-UHFFFAOYSA-N 0.000 description 1
- PGTXKIZLOWULDJ-UHFFFAOYSA-N [Mg].[Zn] Chemical compound [Mg].[Zn] PGTXKIZLOWULDJ-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- 235000009582 asparagine Nutrition 0.000 description 1
- 229960001230 asparagine Drugs 0.000 description 1
- 229940009098 aspartate Drugs 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 229910001430 chromium ion Inorganic materials 0.000 description 1
- XLJKHNWPARRRJB-UHFFFAOYSA-N cobalt(2+) Chemical compound [Co+2] XLJKHNWPARRRJB-UHFFFAOYSA-N 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- HIAAPJWEVOPQRI-DFWYDOINSA-L copper;(2s)-2-aminopentanedioate Chemical compound [Cu+2].[O-]C(=O)[C@@H](N)CCC([O-])=O HIAAPJWEVOPQRI-DFWYDOINSA-L 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 150000003573 thiols Chemical group 0.000 description 1
- 238000012345 traction test Methods 0.000 description 1
- 239000004474 valine Substances 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
- 235000009529 zinc sulphate Nutrition 0.000 description 1
- 239000011686 zinc sulphate Substances 0.000 description 1
- 150000003755 zirconium compounds Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/68—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 solutions with pH between 6 and 8
-
- 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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
-
- 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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/26—After-treatment
-
- 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
-
- 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
- C23C22/82—After-treatment
-
- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
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- 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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
- C23F11/14—Nitrogen-containing compounds
-
- 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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
- C23F11/14—Nitrogen-containing compounds
- C23F11/144—Aminocarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/22—Electroplating: Baths therefor from solutions of zinc
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/48—After-treatment of electroplated surfaces
-
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
- Y10T428/12556—Organic component
Definitions
- a process for preparing a coated sheet comprising applying an aqueous solution comprising an amino acid and use thereof to improve corrosion resistance
- the present invention relates to a sheet comprising a steel substrate having two faces of which at least one is coated with a metal coating comprising at least 40% by weight of zinc, its preparation process and the use of an amino acid for improving the corrosion resistance of zinc-coated coatings.
- the invention relates to a coated steel sheet. Before being used, the coated steel sheets are generally subjected to various surface treatments.
- the application US 2010/0261024 describes the application of an aqueous solution of glycine or neutral form glutamic acid or salt on a steel sheet coated with a zinc-based coating to improve the corrosion resistance of prison.
- the application WO 2008/076684 describes the application on a zinc coated steel sheet, on an electrogalvanised steel sheet or on a galvanized steel sheet of a pretreatment composition consisting of an aqueous solution comprising a compound comprising a metal of group IIIB (Se, Y, La, Ac) or group IVB (Ti, Zr, Hf, Rf) and a copper-based compound, for example aspartate or copper glutamate, followed by the application of a composition comprising a film-forming resin and an yttrium-based compound.
- group IIIB Se, Y, La, Ac
- group IVB Ti, Zr, Hf, Rf
- a copper-based compound for example aspartate or copper glutamate
- Application EP 2 458 031 describes the application on a galvanized steel sheet G1, or galvanized alloy GA, of a conversion treatment solution comprising a compound (A) chosen from water-soluble titanium or zirconium compounds and a compound organic (B) which may especially be glycine, alanine, asparagine, glutamic acid or aspartic acid in neutral form or salt.
- the compound (A) forms on the sheet a conversion film which improves the compatibility of the sheet with subsequently applied coatings, such as cataphoretic paints, and its resistance to corrosion.
- Compound (B) is described as stabilizing compound (A).
- An object of the invention is to provide a method for preparing a steel sheet coated with a metal coating comprising zinc which has an even greater corrosion resistance.
- the invention relates to a method according to claim 1.
- the method may also include the features of claims 2 to 23, taken alone or in combination.
- the invention also relates to a sheet according to claim 24 to 26, and uses according to claims 27 and 28.
- Sheet 1 of the figure comprises a substrate 3 made of steel coated on each of its two faces 5 by a metal coating 7. It will be observed that the relative thicknesses of substrate 3 and coatings 7 covering it have not been respected in FIG. to facilitate representation.
- the coatings 7 present on the two faces 5 are similar and only one will be described in detail later. Alternatively (not shown), only one of the faces 5 has a metal coating 7.
- the metal coating 7 comprises more than 40% by weight of zinc, in particular more than 50% by weight of zinc, preferably more than 70% by weight of zinc, more preferably more than 90%, preferably more than 95%, of preferably more than 99%.
- the complement may consist of metal elements Al, Mg, Si, Fe, Sb, Pb, Ti, Ca, Sr, Mn, Sn, La, Ce, Cr, Ni or Bi, taken alone or in combination.
- the measurement of the composition of a coating is generally carried out by chemical dissolution of the coating. The result given corresponds to an average content throughout the layer.
- the metal coating 7 may comprise several successive layers of different compositions, each of these layers comprising more than 40% by weight of zinc (or more, as defined above).
- the metal coating 7, or one of its constituent layers may also have a concentration gradient in a given metal element.
- the average proportion of zinc in the metal coating 7, or in this constituent layer is more than 40% by weight of zinc (or more, as defined above).
- the method may comprise a prior step of preparing the substrate 2 made of steel having two faces 5, at least one of which is coated with a metal coating 7 comprising at least 40% by weight of zinc.
- a steel substrate 3 is used, for example obtained by hot rolling and then cold rolling.
- the metal coating 7 comprising more than 40% by weight of zinc may be deposited on the substrate 3 by any known deposition method, in particular by electrogalvanization, vapor deposition ("physical vapor deposition" PVD in English), deposition by jet of Sonic steam (“Jet Vapor Deposition" JVD in English) or hot dip galvanizing.
- the steel substrate 3 having two faces 5, at least one of which is coated with a metal coating 7 comprising at least 40% by weight of zinc is obtained by electrogalvanizing the substrate 3 made of steel.
- the application of the coating may take place on one side (the sheet 1 then comprises only a metal coating 7), or on both sides (the sheet 1 then comprises two metal coatings 7).
- the steel substrate 3 having two faces 5, at least one of which is coated with a metal coating 7 comprising at least 40% by weight of zinc is obtained by hot-dip galvanizing the steel substrate 3.
- the substrate 3 is then in the form of a strip which is scrolled in a bath to deposit the metal coating 7 by hot dipping.
- the composition of the bath varies according to whether the desired sheet 1 is a galvanized steel sheet G1 ("galvanized steel sheet” in English), GA (galvanized alloy or "galvannealed steel sheet” in English) or a sheet coated with a zinc alloy and magnesium, an alloy of zinc and aluminum or an alloy of zinc, magnesium and aluminum.
- the bath may also contain up to 0.3% by weight of additional optional elements such as Si, Sb, Pb, Ti, Ca, Mn, Sn, La, Ce, Cr, Ni or Bi. These various additional elements can in particular make it possible to improve the ductility or adhesion of the metal coating 7 to the substrate 3.
- the bath may finally contain residual elements from the ingots, or resulting from the passage of the substrate 3 in the bath, a source of unavoidable impurities in the metal coating 7.
- the steel substrate 3 having two faces 5, at least one of which is coated with a metal coating 7 comprising at least 40% by weight of zinc is a galvanized steel sheet G1.
- the metal coating 7 is then a coating of zinc Gl.
- Such a coating comprises more than 99% by weight of zinc.
- the steel substrate 3 having two faces 5, at least one of which is coated with a metal coating 7 comprising at least 40% by weight of zinc is a galvanized steel sheet GA.
- the metal coating 7 is then a coating of zinc GA.
- a galvanized steel sheet GA is obtained by annealing ("annealing" in English) of a galvanized steel sheet Gl.
- the method therefore comprises a step of hot-dip galvanizing the steel substrate 3, and then an annealing step.
- the annealing causes the iron of the steel substrate 3 to diffuse into the metal coating 7.
- the metal coating 7 of a GA sheet typically comprises from 10% to 15% by weight of iron.
- the metal coating 7 is an alloy of zinc and aluminum.
- the metal coating 7 may for example comprise 55% by weight of aluminum, 43.5% by weight of zinc and 1.5% by weight of silicon, such as Aluzinc® sold by ArcelorMittal.
- the metal coating 7 is an alloy of zinc and magnesium, preferably comprising more than 70% by weight of zinc.
- Metal coatings comprising zinc and magnesium will be generally referred to herein as zinc-magnesium or ZnMg coatings.
- the addition of magnesium to the metal coating 7 significantly increases the corrosion resistance of these coatings, which can reduce their thickness or increase the guarantee of protection against corrosion over time.
- the metal coating 7 may especially be an alloy of zinc, magnesium and aluminum, preferably comprising more than 70% by weight of zinc.
- Metal coatings comprising zinc, magnesium, and aluminum will generally be referred to herein as zinc-aluminum-magnesium or ZnAIMg coatings.
- the addition of aluminum (typically of the order of 0.1% by weight) to a coating based on zinc and magnesium also improves the corrosion resistance, and makes the coated sheet easier to be formatting.
- metal coatings essentially comprising zinc are now competing with coatings comprising zinc, magnesium and possibly aluminum.
- the metal coating 7 of ZnMg or ZnAIMg type comprises between 0.1 and 10% by weight, typically between 0.3 and 10% by weight, especially between 0.3 and 4% by weight of magnesium.
- the coated sheet is less resistant to corrosion and above 10% by weight of Mg, the ZnMg or ZnAIMg coating oxidizes too much and can not be used.
- a coating comprising 0.1% or 10% by weight of magnesium is included when the expression "The metal coating 7 comprises between 0.1 and 10% by weight of magnesium" is used.
- the metal coating 7 of ZnAIMg type comprises aluminum, typically between 0.5 and 1% by weight, especially between 0.7 and 6% by weight, preferably between 1 and 6% by weight of aluminum.
- the mass ratio between the magnesium and the aluminum in the metal coating 7 of the ZnAIMg type is strictly less than or equal to 1, preferably strictly less than 1, and more preferably strictly less than 0.9.
- the most common unavoidable impurity present in the metal coating 7 and resulting from the passage of the substrate in the bath is iron which may be present at a content of up to 3% by weight, generally less than or equal to 0.4% by weight, typically between 0.1 and 0.4% by weight relative to the metal coating 7.
- the unavoidable impurities from the ingots, for the ZnAIMg baths, are generally lead (Pb), present at a content of less than 0.01% by weight with respect to the metal coating 7, Cadmium (Cd), present at a content of less than 0.005% by weight with respect to the metal coating 7 and tin (Sn) present at a content of less than 0.001% by weight relative to the metal coating 7.
- Additional elements selected from Si, Sb, Pb, Ti, Ca, Mn, Sn, La, Ce, Cr, Ni or Bi may be present in the metal coating 7.
- the content by weight of each additional element is generally less than 0 , 3%.
- the metal coating 7 generally has a thickness less than or equal to 25 ⁇ and conventionally aims to protect the steel substrate 3 against corrosion.
- the substrate 3 is for example spun by means of nozzles throwing a gas on either side of the substrate 3.
- the metal coating 7 is then allowed to cool in a controlled manner to solidify.
- Controlled cooling of the metal coating 7 is provided at a rate of preferably greater than or equal to 15 ° C / s or more than 20 ° C / s between the onset of solidification (i.e. when the metal coating 7 falls just below the temperature of the liquidus) and the end of solidification (that is to say when the metal coating 7 reaches the temperature of the solidus).
- the spin may be adapted to remove the metal coating 7 deposited on one face 5 so that only one of the faces 5 of the sheet 1 is finally coated with a metal coating 7.
- the band thus treated can then be subjected to a so-called skin-pass step which allows the harden and give it a roughness facilitating its subsequent shaping.
- the outer surface 15 of the metal coating 7 is subjected to a surface treatment step which comprises applying to them an aqueous solution comprising an amino acid selected from alanine, arginine, aspartic acid, cysteine, glutamine, lysine, methionine, proline, serine, threonine, and a mixture thereof.
- Each amino acid can be in neutral form or salt.
- an amino acid is one of the 22 proteinaceous amino acids (L isomer) or an isomer thereof, especially their D isomers.
- the amino acid is preferably an L-amino acid for cost reasons.
- the invention is based on the unexpected discovery that the application on the outer surface of the metal coating 7 of an aqueous solution comprising an amino acid from the above mentioned list makes it possible to improve the corrosion resistance of the sheet obtained. This improvement is not observed regardless of the amino acid used. For example, the corrosion resistance has not been improved by applying valine to a metal-coated sheet comprising at least 40% by weight of zinc. No theory has yet been put forward to explain why some amino acids can improve corrosion resistance and not others.
- the aqueous solution applied may comprise an amino acid selected from alanine, arginine, aspartic acid, cysteine, glutamine, lysine, methionine, proline, serine, threonine, and a mixture of these. ci, each amino acid being in neutral form or salt.
- the aqueous solution applied may comprise an amino acid selected from alanine, arginine, aspartic acid, glutamine, lysine, methionine, proline, serine, threonine, and a mixture thereof, each amino acid being in neutral form or salt.
- the aqueous solution applied can in particular comprise an amino acid chosen from alanine, aspartic acid, cysteine, glutamine, methionine, proline, serine, threonine, and a mixture thereof, each amino acid being under neutral form or salt.
- the aqueous solution applied may, for example, comprise an amino acid chosen from alanine, aspartic acid, glutamine, methionine, proline and serine. threonine, and a mixture thereof, each amino acid being in neutral form or salt.
- the amino acid of the aqueous solution applied is selected from aspartic acid, cysteine, methionine, proline and threonine, and a mixture of of these, each amino acid being in neutral or salt form, in particular among aspartic acid, methionine, proline and threonine, and a mixture thereof, each amino acid being in neutral or salt form.
- the amino acid of the aqueous solution applied is chosen from alanine, arginine, glutamine and lysine. , methionine, proline, serine, threonine and a mixture thereof, each amino acid being in neutral form or salt.
- the amino acid of the applied aqueous solution is selected from alanine, glutamine, methionine, proline, serine, threonine and a mixture thereof, each amino acid being in neutral form or salt.
- the amino acid of the aqueous solution applied is chosen from methionine, proline and threonine and a mixture thereof, each amino acid being in neutral form or salt.
- the amino acid is especially selected from proline in neutral form or salt, cysteine in neutral form or salt, and a mixture thereof.
- Proline is particularly effective in improving corrosion resistance.
- the cysteine advantageously makes it possible to assay the amount of amino acid deposited on the surface by virtue of its thiol function, for example by X-ray fluorescence spectrometry (SFX).
- the amino acid is selected from proline in neutral form or salt, threonine in neutral form or salt, and a mixture thereof.
- Proline and threonine not only make it possible to improve the corrosion resistance of the sheet, but also to improve the compatibility of the surface with an adhesive and to improve the tribological properties of the surface of the sheet (this which makes it well adapted to its subsequent shaping, especially by stamping).
- the improvement of the compatibility of the surface of the sheet with an adhesive can for example be demonstrated by carrying out tensile tests on samples of sheets assembled by means of an adhesive and possibly aged, up to rupture of the assembly and by measuring the maximum tensile stress and the nature of the fracture.
- the improvement of the tribological properties can for example be demonstrated by measuring the coefficient of friction ( ⁇ ) as a function of the contact pressure (MPa), for example from 0 to 80 MPa.
- the aqueous solution applied generally comprises from 1 to 200 g / l, in particular from 5 g / l to 150 g / l, typically from 5 g / l to 100 g / l, for example from 10 to 50 g / l of amino acid. in neutral form or salt or mixture of amino acid in neutral form or salts.
- the most significant improvement in the corrosion resistance of the metal coating 7 of the sheet 1 was observed using an aqueous solution comprising from 5 g / l to 100 g / l, in particular from 10 to 50 g / l d amino acid or amino acid mixture.
- the aqueous solution applied generally comprises from 10 to 1750 mmol / l, especially from 40 mmol / l to 1300 mmol / l, typically from 40 mmol / l to 870 mmol / l, for example from 90 to 430 mmol / l of amino acid. in neutral form or salt or mixture of amino acid in neutral form or salts.
- the most significant improvement in the corrosion resistance of the metal coating 7 of the sheet 1 was observed using an aqueous solution comprising from 40 mmol / L to 870 mmol / L, in particular from 90 to 430 mmol / L amino acid or amino acid mixture.
- the mass and molar proportions of the amino acid (or of each of the amino acids when an amino acid mixture is used) in the aqueous solution can not be greater than the proportions corresponding to the limit of solubility of the amino acid at the temperature. to which the aqueous solution is applied.
- the mass percentage of dry extract of the amino acid in neutral form or of salt or of the mixture of neutral amino acids or of salts in the aqueous solution is greater than or equal to 50%, in particular greater than or equal to 65%, typically greater than or equal to 75%, especially greater than or equal to 90%, preferably greater than or equal to 95%.
- the molar percentage of dry extract of the amino acid in neutral form or of salt in the aqueous solution is greater than or equal to 50%, typically greater than or equal to 75%, especially greater than or equal to 90%, preferably greater than or equal to 95%.
- the aqueous solution may comprise zinc sulfate and / or iron sulfate.
- the proportion of zinc sulphate in the aqueous solution is generally less than 80 g / l, preferably less than 40 g / l.
- the aqueous solution is free of zinc sulfate and iron sulfate.
- the aqueous solution comprising an amino acid comprises less than 10 g / l, typically less than 1 g / l, generally less than 0.1 g / l, especially less than 0.05 g / l, for example less than 0.01 g / l. g / L of zinc ions.
- the aqueous solution is free of zinc ion (in addition to unavoidable traces, which could for example arise from the pollution, by the substrate, of the bath of aqueous solution).
- the aqueous solution comprising an amino acid generally comprises less than 0.005 g / L of iron ions.
- the aqueous solution comprising an amino acid generally comprises few metal ions other than potassium, sodium, calcium and zinc, typically less than 0.1 g / l, especially less than 0.05 g / l, for example less 0.01 g / L, preferably less than 0.005 g / L of metal ions other than potassium, sodium, calcium and zinc.
- the aqueous solution is free of metal ions other than zinc, calcium, sodium and potassium.
- the aqueous solution comprising an amino acid generally comprises few metal ions other than zinc, typically less than 0.1 g / l, especially less than 0.05 g / l, for example less than 0.01 g / l, preferably less than 0.005 g / L of metal ions other than zinc.
- the aqueous solution is free of metal ions other than zinc.
- the aqueous solution comprising an amino acid generally comprises few cobalt and / or nickel ions, typically less than 0.1 g / l, especially less than 0.05 g / l, for example less than 0.01 g / l. L of cobalt and / or nickel ions.
- the aqueous solution is free of cobalt ions and / or free of nickel ions and / or free of copper ions and / or free of chromium ions.
- the aqueous solution is free of a compound comprising a Group IIIB metal (Se, Y, La, Ac) or Group IVB (Ti, Zr, Hf, Rf).
- it is free of metal ions (in addition to unavoidable metallic impurities, which could for example come from the pollution, by the substrate, of the aqueous solution bath).
- the absence of metal ions in the aqueous solution makes it possible to avoid disturbing the action of the active ingredient that is the amino acid or the mixture of amino acids.
- the aqueous solution comprising an amino acid generally comprises less than 0.1 g / l, in particular less than 0.05 g / l, for example less than 0.01 g / l of compounds comprising chromium VI, or more generally chromium. Generally, it is free of compounds comprising chromium VI, or more generally chromium.
- the aqueous solution is generally free of oxidizing agent.
- the aqueous solution is generally free of resin, in particular of organic resin.
- a resin is a polymeric product (natural, artificial or synthetic) which is a raw material for manufacturing, for example, plastics, textiles, paints (liquid or powder), adhesives, varnishes, polymer foams. It can be thermoplastic or thermosetting. More generally, the aqueous solution is generally free of polymer.
- the pH of the aqueous solution applied is generally comprised of a pH equal to the [isoelectric point of the 3-amino acid] at a pH equal to the [isoelectric point of the amino acid + 3], in particular of a pH equal to isoelectric point of the amino acid - 2] at a pH equal to the [isoelectric point of the amino acid + 2], preferably of a pH equal to the [isoelectric point of the amino acid - 1] at a pH equal to isoelectric of the amino acid + 1].
- the pH of the aqueous solution is generally from 3.3 to 9.3, especially from 4.3 to 8.3, preferably from 5.3 to 7.3.
- the pH of the aqueous solution applied is generally comprised of a pH equal to
- the pH of the aqueous solution is preferably from 3.3 to 5.3, especially from 3.8 to 4.8, typically from the order of 4.0, such as 4.3.
- a pH makes it possible to promote the bond between the amino acid and the metal coating 7.
- a method implemented with a solution having such a pH makes it possible to obtain a sheet which retains its properties improved corrosion resistance, even when subjected to a washing / re-oiling treatment.
- the sheet according to the invention has been prepared, it can be blanked before forming, typically by stamping.
- a washing / re-oiling treatment can be implemented. This consists in applying a low-viscosity oil to the surfaces of the sheet, then in brushing and then applying an oil of greater viscosity. Without wishing to be bound by any particular theory, it is assumed that a solution having such a pH makes it possible to obtain the amino acid in protonated form (NH 3 + ), which would promote the bond between the amino acid and the metal coating 7 and therefore the maintenance of the amino acid on the surface despite the washing / re-oiling treatment.
- the amine of the amino acid is little or not protonated: the bonds between the amino acid and the metal coating 7 would be weaker and the amino acid would be more likely to dissolve in the oil used during the washing / re-oiling treatment, leading to its at least partial removal, and therefore to less good corrosion resistance properties.
- a base or an acid is indifferently in neutral form and / or salt.
- the proportion of acid is less than 10 g / l, in particular 1 g / l in the solution.
- the phosphoric acid is added together in neutral form and in salt form (for example sodium, calcium or potassium), for example in a H 3 PO 4 / NaH 2 PO 4 mixture.
- Phosphoric acid advantageously makes it possible to measure the amount of aqueous solution (and therefore of amino acid) deposited on the surface by means of phosphorus and / or sodium, for example by X-ray fluorescence spectrometry (SFX).
- the aqueous solution consists of a mixture of water, amino acid in neutral form or salt or a mixture of amino acids independently in neutral forms or salts and optionally a base or a mixture of bases, or an acid or a mixture of acids.
- the base or acid serves to adjust the pH of the aqueous solution.
- the amino acid imparts the properties of improving the corrosion resistance.
- the base or the acid makes it possible to reinforce this effect. Addition of other compounds is not necessary.
- the aqueous solution comprising an amino acid can be applied at a temperature of between 20 and 70 ° C.
- the duration of application of the aqueous solution can be between 0.5s and 40s, preferably between 2s and 20s.
- the aqueous solution comprising an amino acid can be applied by immersion, spraying or any other system.
- the application of the aqueous solution on the outer surface 15 of the metal coating 7 can be carried out by any means, for example by immersion, by spraying ("spray” in English) or by roll coating ("roll coat” in English). .
- the latter technique is preferred because it makes it easier to control the amount of aqueous solution applied while ensuring a homogeneous distribution of the aqueous solution on the surface.
- the wet film thickness consisting of the aqueous solution applied to the outer surface 15 of the metal coating 7 is 0.2 to 5 ⁇ , typically between 1 and 3 ⁇ .
- aqueous solution comprising an amino acid is brought into contact with the outer surface 15 of the metal coating 7. It is therefore sub- It is to be understood that the outer surface 15 of the metal coating 7 is not covered with an intermediate layer (a film, a coating or a solution) which would prevent the contact of the aqueous solution comprising an amino acid with the outer surface of the coating. metallic 7.
- the method comprises, after the step of applying to the outer surface of the metal coating 7 an aqueous solution comprising an amino acid, a drying step, which provides on the outer surface 15 of the metal coating 7 a layer comprising (or consisting of) an amino acid (in neutral or salt form) or a mixture of amino acids (independently in neutral forms or salts).
- a drying step which provides on the outer surface 15 of the metal coating 7 a layer comprising (or consisting of) an amino acid (in neutral or salt form) or a mixture of amino acids (independently in neutral forms or salts).
- a drying step which provides on the outer surface 15 of the metal coating 7 a layer comprising (or consisting of) an amino acid (in neutral or salt form) or a mixture of amino acids (independently in neutral forms or salts).
- This can be done by subjecting the sheet 1 to a temperature between 70 and 120 ° C, for example between 80 and 100 ° C, generally for 1 to 30 seconds, especially 1 to 10 seconds, for example 2 s.
- the metal coating 7 of the sheet 1 obtained is then typically coated with a layer comprising from 0.1 to 200 mg / m 2 , in particular from 25 to 150 mg / m 2 , in particular from 50 to 100 mg / m 2 , example of 60 to 70 mg / m 2 of amino acid (in neutral or salt form) or a mixture of amino acids (independently in neutral forms or salts).
- the amount of amino acid deposited on the outer surface of the metal coating 7 can be determined by assaying the amount of amino acid deposited (eg by infrared), or by assaying the amount of amino acid remaining in the aqueous solution (for example by acidobasic and / or conductimetric assay) since the initial amino acid concentration of the aqueous solution is known.
- the amino acid or one of the amino acids is cysteine
- the amount of cysteine deposited on the surface can be determined by X-ray fluorescence spectrometry (SFX).
- the layer comprising an amino acid (in neutral or salt form) or a mixture of amino acids (independently in neutral forms or salts) which coat the metal coating 7 of the sheet 1 obtained comprises from 50 to 100% by weight, especially 75 to 100% by weight, typically 90 to 100% by weight of amino acid (in neutral form or salt) or mixture of amino acids (independently in neutral forms or salts).
- the method may comprise (or be free from) other surface treatment step (s) than that of applying an aqueous solution comprising an amino acid (for example alkaline oxidation surface treatment and / or chemical conversion).
- this (s) surface treatment step (s) leads (s) to the formation of a layer on the metal coating 7
- this (these) other (s) surface treatment step (s) is (are) carried out simultaneously or after the step of applying an aqueous solution comprising an amino acid on the outer surface 15 of the metal coating 7, so that there is no intermediate layer between the outer surface 15 of the coating metal 7 and the aqueous solution comprising an amino acid.
- These possible surface treatment steps mentioned above may include other sub-stages of rinsing, drying ....
- a film of fat or oil is generally applied to the outer surface of the metal coating 7 coated with a layer comprising an amino acid or a mixture of amino acids to protect it against corrosion.
- the band may possibly be wound before being stored. Typically, before putting the piece into shape, the strip is cut. A grease or oil film may then be reapplied to the outer surface of the metal coating 7 coated with a layer comprising an amino acid or a mixture of amino acids prior to shaping.
- the process is free of a degreasing step (typically performed by applying a basic aqueous solution of pH generally greater than 9 to the outer surface 15 of the metal coating 7) prior to shaping.
- a degreasing step typically performed by applying a basic aqueous solution of pH generally greater than 9 to the outer surface 15 of the metal coating 7) prior to shaping.
- the treatment with a basic aqueous solution on the outer surface 15 of the coating metal coated with a layer comprising an amino acid or a mixture of amino acids could lead to the partial or total elimination of the amino acid (s) which has (have) been deposited on the surface outer 15 of the metal coating 7, which is sought to avoid.
- the sheet may then be shaped by any method adapted to the structure and shape of the parts to be manufactured, preferably by stamping, such as for example cold stamping.
- the shaped sheet 1 then corresponds to a part, for example a car part.
- the process can then include (or be free from):
- a degreasing step typically carried out by applying a basic aqueous solution to the outer surface 15 of the metal coating 7, and / or
- step (s) surface treatment for example a phosphating step, and / or
- the invention also relates to sheet 1 which can be obtained by the method.
- a sheet comprises at least a portion of at least one outer surface 15 of the metal coating 7 coated with a layer comprising from 0.1 to 200 mg / m 2 , in particular from 25 to 150 mg / m 2 , in particular from 50 to at 100 mg / m 2 , for example 60 to 70 mg / m 2 of amino acid in neutral form or salt.
- the invention also relates to the use of an aqueous solution comprising an amino acid chosen from alanine, arginine, aspartic acid, cysteine, glutamine, lysine, methionine, proline, serine, threonine, and a mixture thereof, wherein each amino acid is in neutral or salt form, the aqueous solution being free of a compound comprising a Group IIIB metal or Group IVB, to improve the corrosion resistance of an outer surface
- the invention also relates to a method for improving the corrosion resistance of an outer surface 15 of a metal coating 7 coating at least one face 5 of a steel substrate 3, comprising at least the steps of: supply of a steel substrate 2 having two faces 5, at least one of which is coated with a metal coating 7 comprising at least 40% by weight of zinc,
- an aqueous solution comprising an amino acid selected from alanine, arginine, aspartic acid, cysteine, glutamine, lysine, methionine, proline, serine, threonine, and a mixture thereof, each amino acid being in neutral form or salt, the aqueous solution being free of a compound comprising a Group IIIB metal or Group IVB.
- the invention also relates to the use of an aqueous solution comprising an amino acid selected from proline, threonine and a mixture thereof, wherein proline and threonine are independently in neutral form or salt, the aqueous solution being free of of a compound comprising a Group IIIB metal or Group IVB, for:
- metal coating 7 comprises at least 40% by weight of zinc.
- the invention also relates to a method for:
- said method comprising at least the steps of: supply of a steel substrate 2 having two faces 5, at least one of which is coated with a metal coating 7 comprising at least 40% by weight of zinc,
- an aqueous solution comprising an amino acid selected from proline, threonine and a mixture thereof, proline and threonine being independently in neutral form or salt, the solution aqueous being free of a compound comprising a Group IIIB metal or Group IVB.
- corrosion resistance tests were carried out according to the ISO 6270-2 standards of 2005 and / or VDA 230-213 of 2008 on metal sheets 1 covered with a metal coating 7 comprising about 99% zinc (steel plate G1), or samples of electrogalvanised steel sheet 1 comprising 100% zinc (steel sheet EG), to which was applied:
- the sheets 1 obtained by a process according to the invention have a better resistance to corrosion.
- the other properties of the sheets 1 obtained by the process according to the invention have not been degraded.
- Example 2 Tests for Measuring the Friction Coefficient ( ⁇ ) as a Function of the Contact Pressure (MPa) and Tensile Tests for the Proline and Threonine Amino Acids
- Samples of metal sheet 1 covered with a metal coating 7 comprising approximately 99% zinc (steel sheet G1), or samples of electrogalvanized steel sheet 1 comprising 100% zinc (steel sheet EG) were used.
- Each specimen 27 was prepared as follows. Tabs 29 were cut from sheet 1 to be evaluated. These tongues 29 had dimensions of 25 mm x 12.5 mm ⁇ 0.2 mm.
- Tabs 29 were immersed for an immersion time of 20 seconds at a temperature of 50 ° C. in an aqueous solution of proline or threonine whose pH had been adjusted by addition of H 3 PO 4 , with the exception of reference plates (Ref) having not been subjected to any treatment with an amino acid.
- Fuchs® 3802-39S oil was applied to the tabs 29 in an amount of 3 g / m 2 .
- BM1044 which are "crash” glues based on epoxy and marketed by Dow® Automotive. These adhesives have been selected because they are adhesives conventionally leading to adhesive fractures before aging and / or after aging of the adhesive.
- test piece 27 thus formed was then raised to 180 ° C. and held at this temperature for 30 minutes, which makes it possible to bake the adhesive.
- the tensile test was then carried out at an ambient temperature of 23 ° C. by imposing a pulling speed of 10 mm / min on one tongue 29, parallel thereto, while the other tongue 29 of the test specimen It was fixed. The test was continued until the test piece 27 was broken.
- SCR means superficial cohesive rupture.
- Tables 1 and 2 below, the sheets 1 which have undergone treatment with an aqueous solution comprising proline or threonine promote the appearance of superficial cohesive fractures, in contrast to the reference sheets for which more than Adhesive fractures have been observed.
- the fracture facies observed on the proline or threonine tests also consist only of superficial cohesive rupture, unlike the reference which has not undergone treatment (Ref 2) where it is found 20 % of adhesive rupture,
- Table 2 Maximum tensile stresses and nature of the fracture for test pieces based on electrogalvanized sheets tested.
- Samples having dimensions of 450 mm ⁇ 35 mm ⁇ thickness were cut from these steel sheets.
- the samples were immersed for an immersion time of 20 seconds at a temperature of 50 ° C. in an aqueous solution of proline or threonine whose pH had possibly been adjusted by addition of H 3 PO 4 .
- Fuchs ® 3802-39S oil in an amount of 3 g / m 2
- Fuchs ® 4107S (refusal) or QUAKER 6130 (reject) was applied to one side of the samples.
- the coefficient of friction ( ⁇ ) was then measured as a function of the contact pressure (MPa) by varying the contact pressure from 0 to 80 MPa:
- phase A phase A, B, and C in Table 3 below.
- EG electrozinced substrate * : pH adjusted by adding H3PO4
- Table 3 Tribological properties (Observation of a chatter and coefficient of friction ( ⁇ ) as a function of the pressure exerted) for the tested sheet samples.
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- Chemical & Material Sciences (AREA)
- Metallurgy (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Chemical Treatment Of Metals (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Laminated Bodies (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
Description
Claims
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PL16704480T PL3250730T3 (pl) | 2015-01-30 | 2016-02-01 | Sposób wytwarzania powlekanej blachy, obejmujący nałożenie wodnego roztworu zawierającego aminokwas i związane zastosowanie dla polepszenia odporności na korozję |
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PCT/IB2015/050722 WO2016120669A1 (fr) | 2015-01-30 | 2015-01-30 | Procédé de préparation d'une tôle revêtue comprenant l'application d'une solution aqueuse comprenant un aminoacide et utilisation associée pour améliorer la résistance à la corrosion |
PCT/IB2016/050506 WO2016120855A1 (fr) | 2015-01-30 | 2016-02-01 | Procédé de préparation d'une tôle revêtue comprenant l'application d'une solution aqueuse comprenant un aminoacide et utilisation associée pour améliorer la résistance à la corrosion |
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EP3250730A1 true EP3250730A1 (fr) | 2017-12-06 |
EP3250730B1 EP3250730B1 (fr) | 2019-01-23 |
EP3250730B8 EP3250730B8 (fr) | 2019-06-26 |
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US (2) | US11060174B2 (fr) |
EP (1) | EP3250730B8 (fr) |
JP (1) | JP6784680B2 (fr) |
KR (1) | KR102604333B1 (fr) |
CN (1) | CN107208273B (fr) |
BR (1) | BR112017015696B1 (fr) |
CA (1) | CA2975370C (fr) |
ES (1) | ES2713752T3 (fr) |
HU (1) | HUE042791T2 (fr) |
PL (1) | PL3250730T3 (fr) |
TR (1) | TR201905111T4 (fr) |
WO (2) | WO2016120669A1 (fr) |
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WO2016120670A1 (fr) * | 2015-01-30 | 2016-08-04 | Arcelormittal | Procédé de préparation d'une tôle revêtue comprenant l'application d'une solution aqueuse comprenant un aminoacide et utilisation associée pour améliorer la compatibilité avec un adhésif |
WO2016120671A1 (fr) * | 2015-01-30 | 2016-08-04 | Arcelormittal | Procédé de préparation d'une tôle revêtue comprenant l'application d'une solution aqueuse comprenant un aminoacide et utilisation associée pour améliorer les propriétés tribologiques |
WO2017017484A1 (fr) * | 2015-07-30 | 2017-02-02 | Arcelormittal | Procédé pour la fabrication d'une pièce durcie qui ne présente pas de problèmes lme (liquide metal embrittlement - fragilité par les métaux liquides) |
JP6697298B2 (ja) * | 2016-03-24 | 2020-05-20 | 日鉄日新製鋼株式会社 | 表面処理された溶融めっき鋼板およびその製造方法 |
MX2018007164A (es) | 2016-11-08 | 2019-06-06 | Lumus Ltd | Dispositivo de guia de luz con borde de corte optico y metodos de produccion correspondientes. |
KR102692944B1 (ko) | 2017-02-22 | 2024-08-07 | 루머스 리미티드 | 광 가이드 광학 어셈블리 |
AU2019330119B2 (en) | 2018-08-26 | 2023-08-24 | Lumus Ltd. | Reflection suppression in near eye displays |
TWM642752U (zh) | 2018-11-08 | 2023-06-21 | 以色列商魯姆斯有限公司 | 用於將圖像顯示到觀察者的眼睛中的顯示器 |
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- 2016-02-01 CN CN201680007513.2A patent/CN107208273B/zh active Active
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US20200040438A1 (en) | 2020-02-06 |
ES2713752T3 (es) | 2019-05-23 |
KR102604333B1 (ko) | 2023-11-20 |
PL3250730T3 (pl) | 2019-06-28 |
WO2016120669A1 (fr) | 2016-08-04 |
JP2018503748A (ja) | 2018-02-08 |
BR112017015696B1 (pt) | 2022-04-05 |
CN107208273A (zh) | 2017-09-26 |
HUE042791T2 (hu) | 2019-07-29 |
US11236413B2 (en) | 2022-02-01 |
CA2975370C (fr) | 2023-04-18 |
US11060174B2 (en) | 2021-07-13 |
CN107208273B (zh) | 2020-03-06 |
TR201905111T4 (tr) | 2019-05-21 |
JP6784680B2 (ja) | 2020-11-11 |
EP3250730B1 (fr) | 2019-01-23 |
KR20170107466A (ko) | 2017-09-25 |
BR112017015696A2 (pt) | 2018-03-20 |
EP3250730B8 (fr) | 2019-06-26 |
US20180023177A1 (en) | 2018-01-25 |
CA2975370A1 (fr) | 2016-08-04 |
WO2016120855A1 (fr) | 2016-08-04 |
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