TWI445841B - 鋅或鋅合金表面的黑色化化成處理用水溶液及使用該處理用水溶液之黑色化防鏽皮膜形成方法 - Google Patents
鋅或鋅合金表面的黑色化化成處理用水溶液及使用該處理用水溶液之黑色化防鏽皮膜形成方法 Download PDFInfo
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- TWI445841B TWI445841B TW098131148A TW98131148A TWI445841B TW I445841 B TWI445841 B TW I445841B TW 098131148 A TW098131148 A TW 098131148A TW 98131148 A TW98131148 A TW 98131148A TW I445841 B TWI445841 B TW I445841B
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- Prior art keywords
- film
- aqueous solution
- chemical conversion
- zinc
- metal member
- Prior art date
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- 239000007864 aqueous solution Substances 0.000 title claims description 81
- 239000000126 substance Substances 0.000 title claims description 62
- 238000006243 chemical reaction Methods 0.000 title claims description 53
- 238000011282 treatment Methods 0.000 title claims description 53
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims description 36
- 229910001297 Zn alloy Inorganic materials 0.000 title claims description 36
- 229910052725 zinc Inorganic materials 0.000 title claims description 36
- 239000011701 zinc Substances 0.000 title claims description 36
- 238000000034 method Methods 0.000 title claims description 32
- 239000011248 coating agent Substances 0.000 title description 7
- 238000000576 coating method Methods 0.000 title description 7
- 238000005260 corrosion Methods 0.000 title description 6
- 229910052751 metal Inorganic materials 0.000 claims description 55
- 239000002184 metal Substances 0.000 claims description 55
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 44
- -1 iron ions Chemical class 0.000 claims description 31
- 239000010455 vermiculite Substances 0.000 claims description 30
- 229910052902 vermiculite Inorganic materials 0.000 claims description 30
- 235000019354 vermiculite Nutrition 0.000 claims description 30
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 28
- 239000000243 solution Substances 0.000 claims description 15
- 239000012756 surface treatment agent Substances 0.000 claims description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 13
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 13
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 229910052742 iron Inorganic materials 0.000 claims description 12
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 11
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 claims description 11
- 229910052719 titanium Inorganic materials 0.000 claims description 11
- 239000010936 titanium Substances 0.000 claims description 11
- 229910052684 Cerium Inorganic materials 0.000 claims description 10
- 229910001437 manganese ion Inorganic materials 0.000 claims description 10
- 239000013522 chelant Substances 0.000 claims description 9
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 7
- 229910052693 Europium Inorganic materials 0.000 claims description 4
- 229910001430 chromium ion Inorganic materials 0.000 claims description 4
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 4
- 150000002500 ions Chemical class 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 230000003449 preventive effect Effects 0.000 claims description 2
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 claims 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims 1
- 229910017604 nitric acid Inorganic materials 0.000 claims 1
- 239000010408 film Substances 0.000 description 142
- 239000010410 layer Substances 0.000 description 32
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 15
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 15
- 229910052804 chromium Inorganic materials 0.000 description 14
- 239000011651 chromium Substances 0.000 description 14
- 230000002265 prevention Effects 0.000 description 13
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 10
- 239000007788 liquid Substances 0.000 description 10
- 238000004381 surface treatment Methods 0.000 description 10
- 241001163841 Albugo ipomoeae-panduratae Species 0.000 description 9
- 239000000047 product Substances 0.000 description 9
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 7
- 238000007747 plating Methods 0.000 description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- 229910002651 NO3 Inorganic materials 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 6
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 6
- 239000007921 spray Substances 0.000 description 6
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 5
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- DIOQZVSQGTUSAI-UHFFFAOYSA-N decane Chemical compound CCCCCCCCCC DIOQZVSQGTUSAI-UHFFFAOYSA-N 0.000 description 5
- 229940085991 phosphate ion Drugs 0.000 description 5
- 229910000640 Fe alloy Inorganic materials 0.000 description 4
- WAEMQWOKJMHJLA-UHFFFAOYSA-N Manganese(2+) Chemical compound [Mn+2] WAEMQWOKJMHJLA-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 238000007598 dipping method Methods 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 229910007567 Zn-Ni Inorganic materials 0.000 description 3
- 229910007614 Zn—Ni Inorganic materials 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 3
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 3
- 239000002738 chelating agent Substances 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 229910001429 cobalt ion Inorganic materials 0.000 description 3
- XLJKHNWPARRRJB-UHFFFAOYSA-N cobalt(2+) Chemical compound [Co+2] XLJKHNWPARRRJB-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 239000011572 manganese Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000004528 spin coating Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229910052712 strontium Inorganic materials 0.000 description 3
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical group [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 description 2
- 150000001845 chromium compounds Chemical class 0.000 description 2
- 238000004453 electron probe microanalysis Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- CPSYWNLKRDURMG-UHFFFAOYSA-L hydron;manganese(2+);phosphate Chemical compound [Mn+2].OP([O-])([O-])=O CPSYWNLKRDURMG-UHFFFAOYSA-L 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 229910000398 iron phosphate Inorganic materials 0.000 description 2
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- OEIJHBUUFURJLI-UHFFFAOYSA-N octane-1,8-diol Chemical compound OCCCCCCCCO OEIJHBUUFURJLI-UHFFFAOYSA-N 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229910052707 ruthenium Inorganic materials 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- VXUYXOFXAQZZMF-UHFFFAOYSA-N titanium(IV) isopropoxide Chemical compound CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 description 2
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 description 1
- OQLZINXFSUDMHM-UHFFFAOYSA-N Acetamidine Chemical compound CC(N)=N OQLZINXFSUDMHM-UHFFFAOYSA-N 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- XTBRZSNDAUFLDZ-UHFFFAOYSA-N C(=C)C1(C(OCCC1)(OC)OC)OC Chemical compound C(=C)C1(C(OCCC1)(OC)OC)OC XTBRZSNDAUFLDZ-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 241000282412 Homo Species 0.000 description 1
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- 229910021380 Manganese Chloride Inorganic materials 0.000 description 1
- GLFNIEUTAYBVOC-UHFFFAOYSA-L Manganese chloride Chemical compound Cl[Mn]Cl GLFNIEUTAYBVOC-UHFFFAOYSA-L 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229910001229 Pot metal Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 208000025865 Ulcer Diseases 0.000 description 1
- 229910000611 Zinc aluminium Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 208000026935 allergic disease Diseases 0.000 description 1
- 230000007815 allergy Effects 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 150000001622 bismuth compounds Chemical class 0.000 description 1
- 229910000416 bismuth oxide Inorganic materials 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000011088 calibration curve Methods 0.000 description 1
- 238000009924 canning Methods 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- VYLVYHXQOHJDJL-UHFFFAOYSA-K cerium trichloride Chemical compound Cl[Ce](Cl)Cl VYLVYHXQOHJDJL-UHFFFAOYSA-K 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001844 chromium Chemical class 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 150000001983 dialkylethers Chemical group 0.000 description 1
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- KHEMNHQQEMAABL-UHFFFAOYSA-J dihydroxy(dioxo)chromium Chemical compound O[Cr](O)(=O)=O.O[Cr](O)(=O)=O KHEMNHQQEMAABL-UHFFFAOYSA-J 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 229960002089 ferrous chloride Drugs 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- YOBAEOGBNPPUQV-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe].[Fe] YOBAEOGBNPPUQV-UHFFFAOYSA-N 0.000 description 1
- 125000003253 isopropoxy group Chemical group [H]C([H])([H])C([H])(O*)C([H])([H])[H] 0.000 description 1
- 239000011565 manganese chloride Substances 0.000 description 1
- 235000002867 manganese chloride Nutrition 0.000 description 1
- 229940099607 manganese chloride Drugs 0.000 description 1
- MIVBAHRSNUNMPP-UHFFFAOYSA-N manganese(2+);dinitrate Chemical compound [Mn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MIVBAHRSNUNMPP-UHFFFAOYSA-N 0.000 description 1
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 1
- 229910000484 niobium oxide Inorganic materials 0.000 description 1
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 229910021647 smectite Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 235000018553 tannin Nutrition 0.000 description 1
- 229920001864 tannin Polymers 0.000 description 1
- 239000001648 tannin Substances 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 231100000397 ulcer Toxicity 0.000 description 1
- 229910001456 vanadium ion Inorganic materials 0.000 description 1
- 239000011787 zinc oxide Substances 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
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/18—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions
- C23C10/20—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions only one element being diffused
- C23C10/24—Salt bath containing the element to be diffused
-
- 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
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/18—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions
- C23C10/26—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions more than one element being diffused
-
- 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
- C23C12/00—Solid state diffusion of at least one non-metal element other than silicon and at least one metal element or silicon into metallic material 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
- 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
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Description
本發明涉及於具有鋅或鋅合金表面的金屬構件表面,使用不含3價及6價鉻之水溶液亦即無鉻水溶液形成黑色化(blacken)皮膜之化成處理用水溶液,與使用該化成處理用水溶液之黑色化防鏽皮膜形成方法。
至今,將鍍鋅構件之表面黑色化的表面處理向來係採用所謂黑色鉻酸鹽處理。但已知人類皮膚長期接觸經含6價鉻之鉻酸鹽水溶液處理的金屬構件,則鉻為人體所吸收而蓄積,有發生鉻潰瘍、鉻過敏症狀等之危險性。
對此,歐洲已藉RoHS法規限制6價鉻之使用。取代6價鉻改用3價鉻之表面處理已漸盛行(專利文獻10)。但3價鉻因平衡反應其部分轉化為6價鉻,故仍有影響人類、環境之疑慮。
鍍鋅構件之無鉻黑色化化成處理液者已知有用以處理鍍鋅合金鋼板之磷酸/硝酸鹽水溶液(專利文獻1),鹽酸、硫酸、有機酸的1種或2種以上與雙氧水之混合液(專利文獻2),含有亞硫酸離子供給源與氧化性物質供給源之pH 6以下的酸性水溶液(專利文獻3)等。
並有浸泡鋅或鋅合金於含有釩離子、鋁離子、銨離子(及必要時之鈷離子)的黑色化處理用水溶液後,更以單寧(tannin)系水溶液處理後,形成有機樹脂皮膜之處理方法的提議(專利文獻4)。此時,無有機樹脂皮膜則僅具鹽水噴霧試驗至8小時左右即生白鏽之防鏽性能,難以藉較薄皮膜獲得高防鏽性能。
又有,藉由含重亞硫酸鹽與硫酸鋁或明膠之水溶液的鍍鋅或鋅合金表面之化成處理方法的提議(專利文獻5),但防鏽性能差,鹽水噴霧試驗中於48小時產生白鏽,防鏽性能難以滿足實用。又,鍍鋅或鋅合金表面之無鉻防鏽皮膜處理方法者,雖有形成2層構造以上之皮膜的方法之提議(專利文獻6),但並無呈黑色色調之表面處理方法的揭示。又已知有由含有鈰(Ce)陽離子與過氧化氫之酸性水溶液,於鋁、鋅形成耐蝕性之含鈰的表面被覆之方法(專利文獻7、8,非專利文獻1)。
本申請人先前已將部分水解四烷氧基矽烷且使聚縮合之重量平均分子量1,000~10,000的烷氧基矽烷低聚物之醇溶液,其醇溶液中烷氧基矽烷低聚物之濃度以矽石成分換算係8~25重量%之鍍鋅製品用非鉻表面處理劑的發明申請專利(專利文獻9)。
此非鉻表面處理劑之特徵係經塗布於鍍鋅金屬製品於表面形成厚度1μm左右之矽石質皮膜,化成皮膜之耐蝕性指標:白鏽(氧化鋅)的產生當然能予防止,鍍鋅層之耐蝕性指標:紅鏽(氧化鐵)之產生亦可予長久防止。
專利文獻1:日本專利特公平2-17633號公報
專利文獻2:日本專利特公平4-68392號公報
專利文獻3:日本專利特開2003-213446號公報
專利文獻4:日本專利特開2005-232504號公報
專利文獻5:日本專利特開2006-322048號公報
專利文獻6:日本專利特開2008-121101號公報
專利文獻7:日本專利特表平02-502655號公報(WO88/06639A1)
專利文獻8:日本專利特表2003-528218號公報(US6,773,516B2)
專利文獻9:日本專利特開2005-264170號公報(日本專利第4128969號)
專利文獻10:美國專利第5,415,702號說明書非專利文獻
非專利文獻1:小林靖之等;鍍鋅皮膜上的含鈰化成處理皮膜之製作與耐蝕性評估,表面技術,第55卷,第276頁(2004)
以含有3價鉻化合物之酸性處理液用作不使用6價鉻之化成處理液的黑色處理已受採用,但形成於鋅或鋅合金表面之皮膜的黑色度不勻,防鏽性能差,並須微調處理液,有處理液快速劣化,必須頻繁更新處理液等問題,鍍層業者、其他使用者期待著兼具防鏽性能與高級感之色調深黑的皮膜形成表面處理液及皮膜形成方法之實用化。
如上,可形成完全無鉻而全體黑色度均勻且防鏽性能優良之薄皮膜於鋅或鋅合金表面的化成處理劑、表面處理方法非已知。又,無鉻之習知鉻酸鹽替代技術係於鋼製加工零件等複雜形狀之物品,例如汽車用、家電製品用螺栓、螺帽等之螺絲部位、邊緣部位的耐白鏽性能不充分。
本發明之目的在提供皮膜中不含影響環境、人體之有害鉻化合物,具有與6價鉻酸鹽處理同等以上之優良防鏽性能,防鏽皮膜受損傷亦可藉自行修復性(亦即皮膜成分自行溶出而修復皮膜破損部之特性)保持防鏽性能的無鉻黑色化防鏽皮膜形成方法,與適於該皮膜形成方法之黑色化化成處理用水溶液。
本發明人等鑑於前敘問題,精心研究結果得知,可獲得於具有鋅或鋅合金表面之金屬構件具有無鉻之至少3層皮膜,且呈良好之黑色度而防鏽性能優良的金屬構件,終於完成本發明。
這3層皮膜係經(A)浸泡具有鋅或鋅合金表面之金屬構件於含鐵離子與錳離子,不含3價及6價鉻離子之無鉻黑色化化成處理用水溶液中,形成包含四氧化三鐵(Fe3
O4
)皮膜之黑色的第一化成皮膜,其次,(B)浸泡該金屬構件於含有3價Ce(鈰)離子之化成處理用水溶液中,於第一
化成皮膜上形成第二化成皮膜(其係包含鈰氧化物之皮膜),其次,(C)於第二化成皮膜上形成第三皮膜(其係矽石質皮膜)形成於具有鋅或鋅合金表面之金屬構件表面。
而本說明書中「包含」(comprise)意指含追加之其它成分亦可。四氧化三鐵(Fe3
O4
)皮膜、鈰氧化物皮膜、矽石質皮膜亦可係僅該物質(consist of),係以該等物質為實質成分,本質上不影響該等皮膜之機能、性質時亦可使含有其它附加成分(consist essentially of)。又,容許含有無法避免的介在物、雜質。「矽石質」意指SiO2
成分之含量達65重量%以上,亦包含100重量%之SiO2
。SiO2
成分含量未達65重量%則難以充分獲得3層相乘效果所致之預期防鏽性能。
第1之本發明係用以浸泡具有鋅或鋅合金表面的金屬構件而於其表面形成黑色化成皮膜之水溶液,該水溶液係其特徵為不含3價及6價之鉻離子,1升之該水溶液中含磷酸離子5~20g、2價鐵離子0.1~3g、2價錳離子1~10g、硝酸離子1~3g而pH為1~3之黑色化化成處理用水溶液。
又,第2之本發明係黑色化成皮膜之形成方法,其特徵為浸泡具有鋅或鋅合金表面的金屬構件於第1之發明的化成處理用水溶液中而化成處理以於該表面形成黑色皮膜,其係包含四氧化三鐵(Fe3
O4
)之皮膜。
又,第3之本發明係具有鋅或鋅合金表面之金屬構件
的無鉻黑色化防鏽皮膜形成方法,其特徵為(A)以第2之發明的方法於具有鋅或鋅合金表面的金屬構件表面形成黑色之第一化成皮膜後水洗,其次,(B)浸泡該金屬構件於調製成1升中含3價鈰離子0.3~6.5g而pH為1~4之水溶液中而化成處理以於該表面形成第二化成皮膜(其係包含鈰氧化物之皮膜)後水洗,其次,(C)塗布含有矽石成分供給源物質之表面處理劑於第二化成皮膜上,形成第三皮膜(其係矽石質皮膜)。
第3之發明係以混合膠體矽石水溶液於前述(B)步驟的含鈰離子之水溶液中,以使第二化成皮膜中含矽石成分1~30重量%為較佳。
又,第3之本發明中,前述(C)步驟的含有矽石成分供給源物質之表面處理劑係以包含經與鈦之螯合物反應的重量平均分子量為1,000~10,000之烷氧基矽烷低聚物的醇溶液為較佳。
又,第3之本發明係以黑色的第一化成皮膜之厚度達0.1~1.0μm,第二化成皮膜之厚度達0.1~1.0μm,第三皮膜之厚度達0.4~2.0μm為較佳。而本發明中,皮膜之厚度係拍攝經表面處理之金屬構件切面的顯微鏡相片,以顯微鏡相片之圖像測定而求出的值。
而第4之本發明係其特徵為於具有鋅或鋅合金表面之金屬構件表面,具有包含黑色之第一化成皮膜其係包含四氧化三鐵(Fe3
O4
)之皮膜、第一化成皮膜上之第二化成皮
膜(其係包含鈰氧化物之皮膜)及第二化成皮膜上之第三皮膜(其係矽石質皮膜)之至少3層的呈黑色色調之防鏽皮膜的金屬構件。
可取代習知黑色鉻酸鹽處理,於具有鋅或鋅合金表面之金屬構件以單一層賦予優良的黑色度與防鏽性能之皮膜的形成很困難。本發明提供於該金屬構件表面形成黑色度良好之被膜的黑色化化成處理用水溶液,以及本發明之黑色化防鏽皮膜形成方法係以於黑色之第一化成皮膜(其係包含Fe3
O4
之皮膜)上形成第二化成皮膜(其係包含鈰氧化物之皮膜),於第二化成皮膜之上層組合第三皮膜(其係矽石質皮膜)之表面處理,成功獲得黑色度,同時,與習知使用6價鉻之鉻酸鹽處理相比達同等以上的防鏽性能。
以本發明之黑色化防鏽皮膜形成方法處理之對象,具有鋅或鋅合金表面之金屬構件,係螺栓、螺帽、壓製製品、板材等電鍍鋅鋼製品,熔鍍鋅鋼製品,蒸鍍鋅鋼製品,鋅模鑄品等之表面包含鋅或鋅合金之金屬構件。表面包含鋅合金之金屬構件係例如電鍍鋅合金之鍍鎳鋅合金品、鍍鋅鐵合金品,熔鍍鋅則有含Al、Mg之鍍Zn合金品。另有含少量Al、Cu、Mg之模鑄鋅合金品。
適於本發明之黑色化防鏽皮膜形成方法的黑色化化成處理用水溶液不含3價及6價鉻離子,1升之水溶液中含磷酸離子5~20g、2價鐵離子(Fe2+
)0.1~3g、2價錳(Mn2+
)離子1~10g、硝酸離子1~3g。更佳之水溶液係於1升之水溶液中含磷酸離子10~15g、2價鐵離子0.3~1.0g、2價錳離子3~5g、硝酸離子1.5~2.5g。又,水溶液之pH以1~3為佳,1.5~2.5更佳。
本發明之化成處理用水溶液含磷酸離子、2價鐵離子、2價錳離子及硝酸離子,鋅或鋅合金之表面被該水溶液中之磷酸蝕刻而活化,於其表面形成黑色的化成皮膜。黑色化成皮膜之成分由EPMA分析結果推測係實質上為四氧化三鐵(Fe3
O4
),鐵的一部分被錳取代。有助於皮膜之黑色化的成分應係以鐵離子為主。
磷酸離子具有蝕刻而活化鋅或鋅合金表面的作用,水溶液中磷酸離子未達5g/L時蝕刻不充分,而超過20g/L則過度去除鋅或鋅合金表面故不佳。水溶液中的2價鐵離子未達0.1g/L時獲得之黑色度不充分,超過3g/L則易於水溶液中產生污泥而不佳。水溶液中之2價錳離子未達1g/L時防鏽性能不充分,而超過10g/L則防鏽性能亦不提升,2價錳離子變過剩故不佳。又,硝酸離子未達1g/L時不得充分之黑色外觀,而超過3g/L則表面之鋅成分溶解而防鏽性能劣化,且黑色外觀變差故不佳。
磷酸離子供給源係使用磷酸、磷酸錳、磷酸鐵等。2價鐵離子供給源係使用硫酸亞鐵、硝酸亞鐵、氯化亞鐵、磷酸鐵等。2價錳離子供給源係使用磷酸錳(MnHPO4
)、硝酸錳(Mn(NO3
)2
)、氯化錳(MnCl2
)、硫酸錳(MnSO4
)等。
又,黑色化化成處理用水溶液之pH以1~3為佳,pH未達1則鋅或鋅合金表面有過度溶解之傾向,pH超過3則黑色化化成處理用水溶液中之2價Fe離子不安定,有作為沈澱物析出之傾向故不佳。為調整黑色化化成處理用水溶液之pH可使用磷酸、鹽酸、硫酸,使用磷酸更佳。黑色化化成處理用水溶液之pH係以調整成不超出較佳pH範圍之1.5~2.5為更佳。
又,亦可使該水溶液中含有鈷離子0.5~2g/L。使該水溶液中含有鈷離子則鈷可共析於四氧化三鐵中而提高黑色化化成處理皮膜之硬度。
使用於本發明之黑色化防鏽皮膜形成方法之黑色化化成處理用水溶液係調製例如於純水0.8升溶有磷酸離子5~20g、2價鐵離子0.1~3g及2價錳離子1~10g並加入硝酸離子2g之水溶液,追加純水至總量達1升之水溶液。然後以例如加磷酸而調整水溶液之pH。
浸泡金屬構件於黑色化化成處理用水溶液中之際該水溶液之溫度以接近室溫,亦即5~40℃即可。又,該金屬構件於該水溶液中之浸泡時間以10~60秒左右之短時間即可,小於10秒則化成皮膜之生成不充分,超過60秒則該金屬構件為鍍鋅或鋅合金之構件時,有鍍層遭磷酸侵蝕而防鏽性能低落之傾向。而,浸泡30秒左右之該金屬構件表面形成有厚度1μm左右之黑色化成皮膜。浸泡該金屬構件於該水溶液中之後,自該水溶液取出該金屬構件而水洗。自該水溶液取出之該金屬構件亦可不進行乾燥。
藉本發明之上述黑色化化成處理用水溶液施行黑色化化成處理之該金屬構件表面,以反射電子組成像調查知形成有厚度0.1~1.0μm之以Fe3
O4
為實質成分之黑色化成皮膜。此黑色化成皮膜之黑色度相當於N1~1.5(Munsell value),非常黑。
並浸泡該金屬構件於含3價鈰離子之水溶液,於此黑色之第一化成皮膜上形成4價狀態之第二層的包含鈰化合物之化成皮膜作為中間膜。
此第二化成皮膜之厚度以切面之反射電子組成像調查結果可知有0.1~1.0μm的以鈰氧化物或水合鈰氧化物為實質成分之化成處理皮膜存在。於鋅或鋅合金表面、鋁或鋁合金表面形成鈰氧化物之皮膜的方法本身如於[先前技術]所述屬於已知,本發明中並不於金屬表面直接形成鈰氧化物之化成皮膜,而於第一層之黑色化成皮膜上形成包含鈰氧化物之化成皮膜作為中間膜,更於其上層形成第三層之矽石質皮膜。第一層與第三層之間不形成此中間化成皮膜則無法於金屬構件賦予良好之耐白鏽防鏽性能。
藉含3價鈰離子之水溶液的化成處理,係於由上述黑色化成皮膜將表面黑色化之該金屬構件的水洗後進行。亦即,金屬構件以化成處理黑色化後水洗,於調製成1升之溶液中含3價鈰離子約0.3~6.5g而pH為1~4之接近室溫,亦即5~40℃的化成處理用水溶液中浸泡5~180秒,其次水洗而進行。
該水溶液之3價鈰離子的供給源係用硝酸鈰、氯化鈰等。該水溶液之pH接近4則該水溶液劣化而難以形成良好之鈰氧化物皮膜,故配合以還原性有機酸,較佳者為檸檬酸抑制該水溶液之pH上升則較佳。
於含3價鈰離子之該水溶液1L中添加1g~4g/L之雙氧水(H2
O2
濃度30重量%)則較佳。經添加雙氧水,該金屬構件表面之化成處理反應受到促進,可於短時間完成化成處理。添加過多雙氧水則該水溶液之劣化加快。
而已知於鈰氧化物皮膜中添加適量之矽石微粒可提升具有鋅或鋅合金表面之金屬構件的耐白鏽防鏽性能。本發明中膠體矽石水溶液(以下稱作膠體矽石)係以添加於含3價鈰離子之水溶液以使第二化成皮膜中矽石成分所佔之比率可達1~30重量%為佳。膠體矽石可使用安定於偏酸側之膠體矽石,例如市售之SNOWTEX-O(註冊商標;日產化學工業股份有限公司製)。
更於該金屬構件表面形成藉切面之反射電子組成像觀察之厚度為0.4~2μm之矽石質皮膜作為第三層之上層皮膜。矽石質皮膜之形成有種種方法,以使用前敘於[先前技術]之「使四烷氧基矽烷部分水解且聚縮合之重量平均分子量1000~10000的烷氧基矽烷低聚物之醇溶液,其特徵為醇溶液中烷氧基矽烷低聚物之濃度換算成矽石成分達8~25重量%之鍍鋅製品用非鉻表面處理劑」(日本專利第4128969號)為佳。
而烷氧基矽烷低聚物之重量平均分子量係使用東曹(股)製之凝膠滲透層析儀HLC-8120GPC,以四氫呋喃為溶劑,以聚苯乙烯之標準製作校正曲線而求出之值。
嗣後此表面處理劑更經改良,使鈦之螯合物與烷氧基矽烷低聚物化合之製品已由放電精密加工硏究所股份有限公司以商品名ZECCOAT(註冊商標)ZEC-888銷售,亦可予採用。
用於前述表面處理劑之改良的鈦之螯合物活性高,添加其溶液於前述之烷氧基矽烷低聚物的醇溶液則與烷氧基矽烷低聚物分子(線狀分子)快速反應而結合,結合部分之烷氧基矽烷低聚物分子的分子量提高。鈦之螯合物的配合量係以相對於前述矽石成分中之矽與鈦之螯合物中的鈦之合計量達2.5~15原子%為佳。鈦之螯合物係用烷氧基矽烷低聚物分子不起交聯而使烷氧基矽烷之大約一半烷氧基由乙醯丙酮、辛二醇等螯合劑取代的鈦之螯合物。
用以形成此第三層皮膜之非鉻表面處理劑於該金屬構件表面的塗布,在鍍鋅螺栓、螺帽等小物件係以藉浸漬與旋鍍(dipping and spinning)法進行為佳。無法採用浸漬與旋鍍法時可採浸漬與排除(dipping and draining)法、噴霧法、輥塗法等種種方法。藉浸漬與旋鍍法進行之塗布可經一塗層一烘烤(one coating and one baking)賦予充分之防鏽性能。
低分子量之醇因易於蒸發,塗布表面處理劑溶液於該金屬構件後,放置於室內可形成乾燥矽石質皮膜。可是因伴隨醇之氣化會結露,為其避免以混合高沸點之醇而抑制醇之蒸發為佳。較佳者係於該金屬構件塗布表面處理劑後,以90~150℃加熱煅燒15分鐘左右。煅燒溫度低則該金屬構件之防鏽性能低落,過高則表面處理劑之矽石質皮膜發生皸裂(crazing)而易於剝離(peeling)。
形成於該金屬構件之表面的上層矽石質皮膜之平均厚度為0.4~2μm。薄於0.4μm則防鏽性能低落,厚於2μm則無防鏽性能之提升可期,皮膜厚則有易於剝離之傾向。較佳的皮膜平均厚度係0.5~1.5μm。形成於該金屬構件表面之矽石質皮膜的厚度可依具有鋅或鋅合金表面之金屬構件的要求防鏽性能等級而選擇。
以下舉實施例具體說明本發明,但本發明不限於以下實施例。
SWCH(冷軋用碳鋼線材)製之六角螺栓(M8×45半螺紋)使用鍍鋅浴(Canning Japan(股)製CFZ20)施以厚度8~10μm鍍鋅,用作試樣。於純水中依記載順序溶解表1上段之質量(g)的化合物,調製實施例(1)、(2)及(3)之黑色化化成處理用水溶液1升。表1下段以g/L呈示各離子之含量。所有化合物已溶解時,水溶液之pH為2。浸泡鍍鋅螺栓試樣3個於25℃之黑色化化成處理用水溶液30秒後取出。
各試樣之表面於水洗後具有漆黑(jet black)表面。該試樣之表面以切面之反射電子組成像調查則有厚度約0.2μm之化成皮膜,化成皮膜之成分以EPMA調查之結果係以Fe3
O4
為實質成分,推測鐵成分之一部分已由錳取代。
浸泡經施以黑色化化成處理之3個試樣於包含表2之組成的以3價鈰離子與膠體矽石(商品名SNOWTEX-O;日產化學工業(股)製)為主要成分之25℃化成處理用水溶液1分鐘而取出,水洗後乾燥。
試樣之表面係以鈰氧化物為實質成分,由試樣切面之反射電子組成像可知係含矽石成分約12重量%之厚度約0.3μm的第二化成皮膜。而形成於試樣表面之漆黑的第一化成皮膜其黑色度不下降而直接留存,鈰化成皮膜則形成於第一化成皮膜上。
其次,形成有鈰化成處理皮膜之3個試樣經水洗、乾燥後,前述包含烷氧基矽烷低聚物之醇溶液之鍍鋅製品用非鉻防鏽表面處理劑(ZECCOAT(註冊商標)ZEC-888)以浸漬與旋鍍法塗布於試樣,放入已升溫至80℃之爐中,升溫至100℃並保持於此溫度30分鐘,煅燒矽石質皮膜。此矽石質皮膜透明,其平均厚度以切面之反射電子組成像相片測定,係約0.5μm。
前述非鉻表面處理劑係放電精密加工研究所股份有限公司之市售品(參考PCT/JP2007/058137=WO2007/119812A1),其係如下調製。於含四乙氧矽烷與少量乙烯基三甲氧矽烷之異丙醇溶液,加水與鹽酸而部分水解,使聚縮合。藉此獲得矽石成分含量約20重量%之烷氧基矽烷低聚物(重量平均分子量約2000)之醇溶液。
相對此醇溶液52.8重量份,以少量之鈦螯合物(使用日本曹達股份有限公司製之TOG)、異丙醇、丙二醇單甲醚、其它合計47.2重量份混合而調製。該鈦螯合物係以四異丙氧化鈦的約一半之異丙氧基由辛二醇(螯合劑)所阻隔(取代)的鈦-異丙氧辛二醇化物。
第1圖係形成在鍍鋅表面之由3層構成之皮膜切面的反射電子組成像相片。由第1圖知,鍍鋅層1之表面被蝕刻,而有黑色之第一化成皮膜2形成,其上形成有第2層之以鈰氧化物為實質成分的第二化成皮膜3與第3層之矽石質皮膜4。
表3呈示形成有3層皮膜之試樣依JIS Z-2371的鹽水噴霧試驗作評估時之防鏽性能與外觀。實施例1~3之所有試樣外觀漆黑(表3中以◎表示)。鹽水噴霧試驗之白鏽、紅鏽的產生時間(以3個經相同處理之試樣供作鹽水噴霧試驗,第2個試樣表面可見白鏽或紅鏽的時間)如表3。
至於白鏽之產生至少需120小時以上,紅鏽之產生至少需500小時以上,呈示良好之防鏽性能,並且黑色外觀亦優良。由表3可知,使用多含錳離子之黑色化化成處理用水溶液處理的實施例3之試樣,其防鏽性能比實施例1、2之試樣良好。
於3個六角螺栓(M8×45半螺紋)施以厚度8~10μm之鍍Zn-Ni合金(Ni之共析率約15重量%)以外,如同實施例3於鍍Zn-Ni合金之螺栓試樣施以表面處理,於Zn-Ni合金鍍層表面形成3層之皮膜。
於3個六角螺栓(M8×45半螺紋)施以厚度8~10μm之鍍Zn-Fe合金(Fe之共析率約0.3重量%)以外,如同實施例3於鍍Zn-Fe合金之螺栓試樣施以表面處理,於Zn-Fe合金鍍層表面形成3層之皮膜。
如同實施例1~3評估實施例4及實施例5之防鏽性能及外觀,結果彙整於表4。外觀之◎記號係如同表3之評估為漆黑,外觀之○記號表示黑色度略差,但評估為實用等級。
使用如同實施例1~3之六角螺栓(M8×45半螺紋)的鍍鋅試樣,使用實施例1~3之黑色化化成處理用水溶液各作化成處理。至於經化成處理之3個試樣,比較例1係不形成鈰化成皮膜與矽石質皮膜二者。比較例2、3則不施以任一表面處理。
表5彙整呈示這些試樣的防鏽性能與黑色外觀。各試樣皆呈示與實施例1~3同等之良好黑色外觀。可是,鹽水噴霧試驗防鏽性能評估結果為,各試樣與實施例3之防鏽性能相比,白鏽產生時間縮短至1/3~1/7左右,紅鏽產生時間縮短至1/12~1/3左右,防鏽性能明顯不如實施例3。
使用表6所示之黑色化化成處理用水溶液,化成處理各鍍鋅螺栓試樣。其次,如同實施例1~3形成第二層與第三層皮膜。
表7彙整呈示比較例4~6之試樣外觀。比較例4、5之化成處理液不含硝酸離子,比較例6之化成處理液不含鐵離子。任一比較例皆因不滿足本發明之黑色化化成處理用水溶液的條件,試樣表面未變成黑色。
具有鋅或鋅合金表面之金屬構件表面以本發明的黑色化化成處理用水溶液處理,則皮膜之黑色度相當於N1~1.5(Munsell value),呈非常良好之黑色。
藉本發明施以3層皮膜之具有鋅或鋅合金表面的金屬構件,係經可取代習知黑色鉻酸鹽處理、3價鉻黑色化成處理之無鉻黑色化防鏽皮膜形成處理而得,兼具優良之防鏽性能與良好之黑色。黑色化防鏽皮膜形成處理之耗費成本亦比習知的使用3價鉻之黑色化處理方法具競爭力,產業上之有用性高。
又,依本發明施以無鉻黑色化防鏽表面處理之具有鋅或鋅合金表面的金屬構件,不使用有害之鉻成分而呈示與經使用6價鉻之鉻酸鹽處理的皮膜同等以上之優良防蝕性能。又因具有不遜於鉻酸鹽處理皮膜之自行修復性,尤適用作如螺栓、螺帽之化成皮膜易受損傷的金屬構件用黑色防鏽皮膜之形成方法。
1...鍍鋅層
2...第一化成皮膜
3...第二化成皮膜
4...矽石質皮膜
第1圖形成在鍍鋅層表面之由3層構成之皮膜的切面之反射電子組成像的代用相片。
1...鍍鋅層
2...第一化成皮膜
3...第二化成皮膜
4...矽石質皮膜
Claims (7)
- 一種黑色化化成處理用水溶液,其係用以浸泡具有鋅或鋅合金表面的金屬構件而於其表面 形成黑色化成皮膜之水溶液,其特徵為:該水溶液不含3價及6價之鉻離子,1升之該水溶液中含磷酸離子5~20g、2價鐵離子0.1~3g、2價錳離子3~5g、及硝酸 離子1~3g,且pH為1~3。
- 一種黑色化成皮膜之形成方法,其特徵為藉由將具有鋅或鋅合金表面的金屬構件浸泡於如申請專利範 圍第1項之化成處理用水溶液中,而於該表面形成包含四氧化三鐵(Fe3 O4 )之皮膜的黑色皮膜。
- 一種具有鋅或鋅合金表面之金屬構件的無鉻黑色化防鏽皮膜形成方法,其特徵為:(A)以如申請專利範 圍第2項之方法於具有鋅或鋅合金表面的金屬構件表面形成黑色之第一化成皮膜後水洗,其次,(B)藉由將該金屬構件浸泡於調製成1升中含0.3~6.5g之3價鈰離子 、且pH為1~4之水溶液中予以化成處理而於該表面形成包含鈰氧化物之皮膜的第二化成皮膜後水洗,其次, (C)將含有矽石成分供給源物質之表面處理劑塗布於第二化成皮膜上而形成為矽石質皮膜的第三皮膜。
- 如申請專利範圍第3項之方法,其係將膠體矽石水溶液混合於該(B)步驟之含鈰離子的水溶液中,以使 第二化成皮膜中含矽石成分1~30重量%。
- 如申請專利範圍第3項之方法,其中該(C)步驟之含有矽石成分供給源物質的表面處理劑,係包含經與 鈦之螯合物反應的重量平均分子量1,000~10,000之烷氧基矽烷低聚物的醇溶液。
- 如申請專利範圍第3項之方法,其中黑色的第一化成皮膜之厚度為0.1~1.0μm,第二化成皮膜之厚度 為0.1~1.0μm,第三皮膜之厚度為0.4~2.0μm。
- 一種金屬構件,其特徵為:於具有鋅或鋅合金表面之金屬構件的表面,具有包含黑色的第一化成皮膜 、第一化成皮膜上之第二化成皮膜、以及第二化成皮膜上之第三皮膜之至少3層的呈黑色色調之防鏽皮膜,第一化成皮膜係由如申請專利範圍第2項之方法所形成 ;其中第一化成皮膜係包含四氧化三鐵(Fe3 O4 )之皮膜,第二化成皮膜係包含鈰氧化物之皮膜,第三皮膜係為矽石質皮膜。
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FR2986806B1 (fr) * | 2012-02-10 | 2015-03-20 | Mecaprotec Ind | Procede de traitement de surface de pieces en alliage d'aluminium ou de magnesium |
WO2013160568A1 (fr) * | 2012-04-25 | 2013-10-31 | Arcelormittal Investigacion Y Desarrollo, S.L. | Procédé de réalisation d'une tôle à revêtements ZnAlMg comprenant l'application d'une solution acide et tôle correspondante. |
JP6220145B2 (ja) * | 2013-04-11 | 2017-10-25 | 日本ニュークローム株式会社 | 銅系金属表面の青色着色処理方法 |
JP6283857B2 (ja) * | 2013-08-28 | 2018-02-28 | ディップソール株式会社 | 耐食性及び黒色外観に優れた車両用黒色締結部材 |
JP6747907B2 (ja) * | 2016-08-03 | 2020-08-26 | 三菱重工業株式会社 | 防食塗膜構造 |
WO2018193696A1 (ja) | 2017-04-18 | 2018-10-25 | 奥野製薬工業株式会社 | 金属材料の防錆処理方法 |
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US20110165426A1 (en) | 2011-07-07 |
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