JP2013534972A - 複合金属構造体を選択的に燐酸塩処理する方法 - Google Patents
複合金属構造体を選択的に燐酸塩処理する方法 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 62
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 36
- 239000002184 metal Substances 0.000 title claims abstract description 36
- 239000002131 composite material Substances 0.000 title claims abstract description 26
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 claims abstract description 52
- 229910000165 zinc phosphate Inorganic materials 0.000 claims abstract description 52
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 41
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 39
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 32
- 239000011701 zinc Substances 0.000 claims abstract description 32
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 26
- 239000002253 acid Substances 0.000 claims abstract description 24
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 22
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims abstract description 21
- 239000010703 silicon Substances 0.000 claims abstract description 21
- 150000002484 inorganic compounds Chemical class 0.000 claims abstract description 20
- 229910010272 inorganic material Inorganic materials 0.000 claims abstract description 20
- 229910052742 iron Inorganic materials 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 26
- 239000008397 galvanized steel Substances 0.000 claims description 26
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 26
- 229910000831 Steel Inorganic materials 0.000 claims description 23
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 23
- 239000010959 steel Substances 0.000 claims description 23
- 239000010936 titanium Substances 0.000 claims description 23
- 229910052719 titanium Inorganic materials 0.000 claims description 23
- 229910052726 zirconium Inorganic materials 0.000 claims description 23
- 229910019142 PO4 Inorganic materials 0.000 claims description 22
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 22
- 239000010452 phosphate Substances 0.000 claims description 22
- 229910045601 alloy Inorganic materials 0.000 claims description 14
- 239000000956 alloy Substances 0.000 claims description 14
- 239000011248 coating agent Substances 0.000 claims description 13
- 238000000576 coating method Methods 0.000 claims description 13
- 150000001875 compounds Chemical class 0.000 claims description 13
- -1 zinc (II) ions Chemical class 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 9
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 7
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 claims description 5
- 229940085991 phosphate ion Drugs 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 238000002203 pretreatment Methods 0.000 claims description 2
- 238000007654 immersion Methods 0.000 claims 1
- 230000002378 acidificating effect Effects 0.000 abstract description 8
- 239000000243 solution Substances 0.000 description 52
- 239000013078 crystal Substances 0.000 description 16
- 239000003973 paint Substances 0.000 description 14
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 13
- 230000007797 corrosion Effects 0.000 description 12
- 238000005260 corrosion Methods 0.000 description 12
- 241000519995 Stachys sylvatica Species 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 238000000151 deposition Methods 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 230000008021 deposition Effects 0.000 description 6
- 238000003618 dip coating Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000007769 metal material Substances 0.000 description 4
- 238000005554 pickling Methods 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000008367 deionised water Substances 0.000 description 3
- 229910021641 deionized water Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- VEQPNABPJHWNSG-UHFFFAOYSA-N Nickel(2+) Chemical compound [Ni+2] VEQPNABPJHWNSG-UHFFFAOYSA-N 0.000 description 2
- 238000010306 acid treatment Methods 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000002161 passivation Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- IDCPFAYURAQKDZ-UHFFFAOYSA-N 1-nitroguanidine Chemical compound NC(=N)N[N+]([O-])=O IDCPFAYURAQKDZ-UHFFFAOYSA-N 0.000 description 1
- BTJIUGUIPKRLHP-UHFFFAOYSA-N 4-nitrophenol Chemical compound OC1=CC=C([N+]([O-])=O)C=C1 BTJIUGUIPKRLHP-UHFFFAOYSA-N 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- AVXURJPOCDRRFD-UHFFFAOYSA-N Hydroxylamine Chemical compound ON AVXURJPOCDRRFD-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- WAEMQWOKJMHJLA-UHFFFAOYSA-N Manganese(2+) Chemical compound [Mn+2] WAEMQWOKJMHJLA-UHFFFAOYSA-N 0.000 description 1
- LFTLOKWAGJYHHR-UHFFFAOYSA-N N-methylmorpholine N-oxide Chemical compound CN1(=O)CCOCC1 LFTLOKWAGJYHHR-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229940005989 chlorate ion Drugs 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- XLJKHNWPARRRJB-UHFFFAOYSA-N cobalt(2+) Chemical compound [Co+2] XLJKHNWPARRRJB-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007739 conversion coating Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- 150000004761 hexafluorosilicates Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 229910001437 manganese ion Inorganic materials 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 229910001453 nickel ion Inorganic materials 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229940005654 nitrite ion Drugs 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 229910001414 potassium ion Inorganic materials 0.000 description 1
- 238000004313 potentiometry Methods 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/10—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by other chemical means
- B05D3/107—Post-treatment of applied coatings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- 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
- C23C22/362—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 zinc cations
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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
- 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
- C23C22/365—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 containing also zinc and nickel 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
- C23C22/73—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
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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
- 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
- C23C22/83—Chemical after-treatment
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- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Treatment Of Metals (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
(I)第一段階で、亜鉛と鉄からなる部分上に、0.5ないし5g/m2の範囲の被覆重量で表面カバー結晶性燐酸亜鉛層の形成をもたらすが、アルミニウム部分上に少なくとも0.5g/m2の被覆重量を備えた燐酸亜鉛層を生じさせない、複合金属構造体の燐酸亜鉛処理溶液による処理を含み、
およびその後に、水による中間的なリンスを行い又は行わず、
(II)第二段階で、3.5ないし5.5の範囲にpH値を有する酸性処理溶液の複合金属構造体上への適用を含み、該酸性処理溶液は、亜鉛と鉄からなる部分上で、段階(I)で付着した結晶性燐酸亜鉛の50%以下を溶解除去するが、アルミニウム部分上に少なくとも0.5g/m2の層重量を有する表面カバー結晶性燐酸塩層ではない転化層を形成し、
段階(I)における燐酸亜鉛処理溶液は、20ないし65°Cの範囲の温度を有し、および遊離フッ化物(g/lで測定)の量を含み、少なくとも0.005g/lであって、数8と溶液温度(°C)の商(8/T)以下であり、
燐酸亜鉛処理溶液は、少なくとも0.025g/lであるが1g/l未満の、SiF6として計算された水溶性無機化合物の形態でのシリコンを含み、水溶性無機化合物の形態でのシリコンの濃度[mMとしてのSi]と遊離酸ポイント数で割った遊離フッ化物の濃度[mMとしてのF]の積(si/mM)・(F/mM)は5以下であり、
燐酸亜鉛処理溶液中の遊離酸ポイント数は、少なくとも0.4ポイントとなるが3.0ポイントの値を超過しない、方法。
0.3〜4g/lの塩素酸イオン、
0.01〜0.2g/lの亜硝酸イオン、
0.05〜4g/lのニトログアニジン、
0.05〜4g/lのN-メチルモルホリン-N-オキシド、
0.2〜2g/lのm-ニトロベンゼンスルホン酸イオン、
0.05〜2g/lのm-ニトロ安息香酸イオン、
0.05〜2g/lのp-ニトロフェノール、
1〜150mg/lの遊離または結合形態の過酸化水素、
0.1〜10g/lの遊離または結合形態のヒドロキシルアミン、
0.1〜10g/lの還元糖。
0.001〜4g/lのマンガン(II)、
0.001〜4g/lのニッケル(II)、
0.001〜4g/lのコバルト(II)、
0.002〜0.2g/lの銅(II)、
0.2〜2.5g/lのマグネシウム(II)、
0.2〜2.5g/lのカルシウム(II)、
0.01〜0.5g/lの鉄(II)、
0.2〜1.5g/lのリチウム(I)、
0.02〜0.8g/lのタングステン(VI)。
亜鉛メッキおよび/または合金亜鉛メッキされた鋼表面上の白点形成は、従来の浸漬タイプの燐酸塩処理方法において特に顕著であって、その結果、本発明による方法の段階(I)における燐酸塩処理操作は、浸漬被覆の原理上で作用する燐酸処理設備にも特に適していることが、経験により示されているが、これは、白点形成が本発明による方法で抑えられるからである。
(a)5-50g/lの燐酸塩イオン、
(b)0.3-3g/lの亜鉛(II)イオン、
(c)少なくとも10ppmであるが100ppm以下の遊離フッ化物イオン、および
(d)少なくとも0.025g/lであるが1g/l未満の、SiF6として計算された水溶性無機化合物の形態でのシリコンであって、水溶性無機化合物の形態でのシリコンの濃度[mMとしてのSi]と遊離酸ポイント数で割った遊離フッ化物の濃度[mMとしてのF]の積(si/mM)・(F/mM)は5以下、好ましくは4.5以下、特に好ましくは4.0以下であるシリコン、を含む燐酸亜鉛処理溶液(A)に関する。
Claims (9)
- アルミニウムからなる少なくとも一部、および亜鉛からなる少なくとも一部、並びに任意に、鉄からなる一部を含む複合金属構造体の有機被覆に先立つ化学的前処理方法であって、該方法は、
(I)第一段階で、亜鉛と鉄からなる部分上に、0.5ないし5g/m2の範囲の被覆重量で表面カバー結晶性燐酸亜鉛層の形成をもたらすが、アルミニウム部分上に少なくとも0.5g/m2の被覆重量を備えた燐酸亜鉛層を生じさせない、複合金属構造体の燐酸亜鉛処理溶液による処理を含み、
およびその後に、水による中間的なリンスを行い又は行わず、
(II)第二段階で、3.5ないし5.5の範囲にpH値を有する処理溶液の複合金属構造体上への適用を含み、該溶液は、亜鉛と鉄からなる部分上で、段階(I)で付着した結晶性燐酸亜鉛の50%以下を溶解除去するが、アルミニウム部分上に少なくとも0.5g/m2の層重量を有する表面カバー結晶性燐酸塩層ではない転化層を形成し、
段階(I)における燐酸亜鉛処理溶液は、20ないし65°Cの範囲の温度を有し、および遊離フッ化物(g/lで測定)の量を含み、少なくとも0.005g/lであって、数8と溶液温度(°C)の商(8/T)以下であり、
燐酸亜鉛処理溶液は、少なくとも0.025g/lであるが1g/l未満の、SiF6として計算された水溶性無機化合物の形態でのシリコンを含み、水溶性無機化合物の形態でのシリコンの濃度[mMとしてのSi]と遊離酸ポイント数で割った遊離フッ化物の濃度[mMとしてのF]の積(si/mM)・(F/mM)は5以下であり、
燐酸亜鉛処理溶液中の遊離酸ポイント数は、少なくとも0.4ポイントとなるが3.0ポイントの値を超過しない、方法。 - 段階(I)における燐酸亜鉛処理溶液は、
(a) 5-50g/lの燐酸塩イオン、
(b) 0.3-3g/lの亜鉛(II)イオン
を含む、請求項1に記載の方法。 - 段階(I)における燐酸亜鉛処理溶液は、ジルコニウム元素および/またはチタン元素に対して合計5ppm以下の、好ましくは合計1ppm以下の、ジルコニウムおよび/またはチタンの水溶性化合物を含有する、請求項1〜2のいずれかに記載の方法。
- 段階(I)における燐酸亜鉛処理溶液は、少なくとも0.6ポイント、好ましくは少なくとも1.0ポイントであるが、2.5ポイント以下、好ましくは2.0ポイント以下の遊離酸含有量を有する、請求項1〜3のいずれかに記載の方法。
- 総酸含有量は、少なくとも10ポイント、好ましくは少なくとも15ポイントであるが、50ポイント以下、好ましくは25ポイント以下である、請求項1〜4のいずれかに記載の方法。
- 段階(II)における処理溶液は、ジルコニウム元素および/またはチタン元素に対して合計10〜1500ppmの、ジルコニウムおよび/またはチタンのフルオロ複合体を含む、請求項1〜5のいずれかに記載の方法。
- 鋼および亜鉛メッキ鋼および/または合金亜鉛メッキ鋼上に0.5ないし5g/m2の範囲の被覆重量を有する表面カバー結晶性燐酸亜鉛層を形成する、第一段階(I)における複合金属構造体の燐酸亜鉛処理溶液による処理は、燐酸亜鉛処理溶液の浸漬適用を含む、請求項1〜6のいずれかに記載の方法。
- 少なくとも0.4ポイントであるが3ポイント以下の遊離酸含有量、および2.2ないし3.6の範囲のpHを有し、
(a) 5-50g/lの燐酸塩イオン、
(b) 0.3-3g/lの亜鉛(II)イオン、
(c)少なくとも10ppmであるが100ppm以下の遊離フッ化物イオン、
(d)少なくとも0.025g/lであるが1g/l未満の、SiF6として計算された水溶性無機化合物の形態でのシリコンであって、水溶性無機化合物の形態でのシリコンの濃度[mMとしてのSi]と遊離酸ポイント数で割った遊離フッ化物の濃度[mMとしてのF]の積(si/mM)・(F/mM)は5以下であるシリコン、
を含む燐酸亜鉛処理溶液。 - ジルコニウム元素および/またはチタン元素に対して合計5ppm以下、好ましくは合計1ppmの、ジルコニウムおよび/またはチタンの水溶性化合物を含む、請求項8に記載の燐酸亜鉛処理溶液。
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