EP0478648A1 - Verfahren zur herstellung von mangan- und magnesiumhaltigen zinkphosphatüberzügen. - Google Patents
Verfahren zur herstellung von mangan- und magnesiumhaltigen zinkphosphatüberzügen.Info
- Publication number
- EP0478648A1 EP0478648A1 EP90909688A EP90909688A EP0478648A1 EP 0478648 A1 EP0478648 A1 EP 0478648A1 EP 90909688 A EP90909688 A EP 90909688A EP 90909688 A EP90909688 A EP 90909688A EP 0478648 A1 EP0478648 A1 EP 0478648A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ions
- zinc
- magnesium
- steel
- nickel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000000576 coating method Methods 0.000 title claims abstract description 25
- 230000008569 process Effects 0.000 title claims abstract description 19
- 239000011777 magnesium Substances 0.000 title claims abstract description 18
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 229910052749 magnesium Inorganic materials 0.000 title claims abstract description 16
- 239000011572 manganese Substances 0.000 title claims abstract description 12
- 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 title claims abstract description 11
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 title claims abstract description 10
- 229910052748 manganese Inorganic materials 0.000 title claims abstract description 10
- 229910000165 zinc phosphate Inorganic materials 0.000 title claims abstract description 10
- 239000011701 zinc Substances 0.000 claims abstract description 27
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 23
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 19
- 239000010959 steel Substances 0.000 claims abstract description 19
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000007864 aqueous solution Substances 0.000 claims abstract description 12
- 238000005507 spraying Methods 0.000 claims abstract description 12
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 11
- 239000000956 alloy Substances 0.000 claims abstract description 11
- 238000007654 immersion Methods 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 45
- -1 zinc (II) ions Chemical class 0.000 claims description 30
- 229910052759 nickel Inorganic materials 0.000 claims description 21
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 14
- 239000002253 acid Substances 0.000 claims description 11
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 10
- 239000008397 galvanized steel Substances 0.000 claims description 10
- 239000007800 oxidant agent Substances 0.000 claims description 7
- 229910002651 NO3 Inorganic materials 0.000 claims description 6
- ONMOULMPIIOVTQ-UHFFFAOYSA-N 98-47-5 Chemical compound OS(=O)(=O)C1=CC=CC([N+]([O-])=O)=C1 ONMOULMPIIOVTQ-UHFFFAOYSA-N 0.000 claims description 4
- XTEGARKTQYYJKE-UHFFFAOYSA-M chlorate Inorganic materials [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 claims description 4
- 150000002500 ions Chemical class 0.000 claims description 3
- 238000004070 electrodeposition Methods 0.000 claims description 2
- 238000010422 painting Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 229910001415 sodium ion Inorganic materials 0.000 claims description 2
- 159000000000 sodium salts Chemical class 0.000 claims description 2
- 238000007598 dipping method Methods 0.000 abstract description 12
- 239000010410 layer Substances 0.000 description 12
- 229910019142 PO4 Inorganic materials 0.000 description 11
- 239000000243 solution Substances 0.000 description 11
- 239000011248 coating agent Substances 0.000 description 10
- 239000010452 phosphate Substances 0.000 description 10
- 230000007797 corrosion Effects 0.000 description 9
- 238000005260 corrosion Methods 0.000 description 9
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- 239000007921 spray Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 150000001768 cations Chemical class 0.000 description 4
- 230000009189 diving Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 230000003213 activating effect Effects 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 230000008595 infiltration Effects 0.000 description 3
- 238000001764 infiltration Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 238000001479 atomic absorption spectroscopy Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000010960 cold rolled steel Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010348 incorporation Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000002161 passivation Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 150000003608 titanium Chemical class 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 241001076195 Lampsilis ovata Species 0.000 description 1
- VEQPNABPJHWNSG-UHFFFAOYSA-N Nickel(2+) Chemical compound [Ni+2] VEQPNABPJHWNSG-UHFFFAOYSA-N 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- 241001499740 Plantago alpina Species 0.000 description 1
- 229920000388 Polyphosphate Polymers 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000006887 Ullmann reaction Methods 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 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
- 229910001429 cobalt ion Inorganic materials 0.000 description 1
- XLJKHNWPARRRJB-UHFFFAOYSA-N cobalt(2+) Chemical compound [Co+2] XLJKHNWPARRRJB-UHFFFAOYSA-N 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 229910001437 manganese ion Inorganic materials 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 229910001960 metal nitrate Inorganic materials 0.000 description 1
- 229910001453 nickel ion Inorganic materials 0.000 description 1
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 1
- 150000002828 nitro derivatives Chemical class 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000001205 polyphosphate Substances 0.000 description 1
- 235000011176 polyphosphates Nutrition 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- LKCUKVWRIAZXDU-UHFFFAOYSA-L zinc;hydron;phosphate Chemical compound [Zn+2].OP([O-])([O-])=O LKCUKVWRIAZXDU-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
- C23C22/36—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also phosphates
- C23C22/368—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 magnesium cations
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/34—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
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/07—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
- C23C22/08—Orthophosphates
- C23C22/18—Orthophosphates containing manganese cations
- C23C22/188—Orthophosphates containing manganese cations containing also magnesium cations
Definitions
- the present invention relates to a method for phosphating metal surfaces, in particular a method for producing zinc phosphate coatings containing angan and magnesium on steel, zinc, aluminum and / or their alloys. These zinc phosphate layers containing manganese and magnesium are applied by spraying, splash-dipping and dipping with aqueous solutions.
- Zinc phosphating baths can contain, for example, monozinc phosphate, free phosphoric acid, zinc nitrate and oxidizing agents as main components.
- the pH of such solutions is usually in the range between 2.8 and 3.4.
- the process consists essentially of two reactions: the pickling reaction and the formation of a zinc phosphate layer on the surface to be phosphated.
- EP-A-0 261 704 discloses a method for producing phosphate coatings on surfaces which are formed from aluminum or its alloys and at least one of the materials steel or galvanized steel, by spraying or splash-dipping for the purpose of formation uniform phosphate layers with a high degree of coverage, a phosphating solution is used which, in addition to zinc, phosphate and fluoride, can also contain other cations from the group consisting of nickel, manganese, magnesium and calcium.
- a high nickel zinc phosphating process is known from WO 85/03089.
- extraordinarily high nickel concentrations are used for phosphating.
- part of the nickel can in principle be replaced by a series of monovalent or divalent cations. These are selected, for example, from cobalt, manganese and magnesium.
- the nickel content of the solution to be used must be at least 1.0 g / l.
- the ratio to be used between low zinc and high nickel content is an essential component of technical teaching.
- the object of the present invention was to provide a phosphating process which is nickel-free or has a lower nickel content compared to the prior art, since nickel is an extremely expensive bath component and is also ecologically unsafe. Since the discharge of nickel-containing wastewater is subject to a charge, the task continued to be to achieve the layer-refining effect of nickel by means of ions that are less harmful to the environment.
- An advantage of the present invention is that extraordinarily low area-related masses of the phosphate layers could be obtained without any loss in the corrosion protection behavior. This applies in particular to steel surfaces.
- fluoride ions are not absolutely necessary when phosphating steel or zinc surfaces.
- the use of fluoride ions leads to a uniform one Degree of coverage of the phosphate layers on the aluminum.
- Pure aluminum, AlMg and AlMgSi kneading materials may be mentioned as examples of aluminum surfaces and their alloys. A detailed description of the aluminum materials can be found, for example, in the aluminum pocket book, 14th edition, Aluminum-Verlag, Düsseldorf, 1988.
- the term steel is understood to mean unalloyed to low-alloy steel, as it e.g. in the form of sheets for body construction.
- galvanized steel includes e.g. Zinc plating on electrolytic and on the melt-dip path and relates to zinc and zinc alloys, e.g. Z, ZE, ZNE, ZF, ZA, AZ.
- the phosphating in the sense of the present invention takes place in spraying, splash immersion and immersion.
- the metal surfaces to be phosphated must be free from disruptive deposits of oils, lubricants, oxides and the like.
- the surfaces are cleaned in a suitable manner and, if necessary, with activating agents known per se, e.g. activated aqueous suspensions containing titanium salt.
- the activating agent can usually be introduced in the cleaning bath or as a separate process stage.
- the substances generally used in phosphating technology can be used as accelerators.
- aqueous phosphating solution which contains chlorate, nitrate, nitrite, peroxide and / or organic oxidizing agents, in particular organic nitro compounds, as accelerators.
- phosphating solutions known in phosphating technology can be used to modify the procedure and of the layer properties included.
- examples include: surfactants, polyhydroxycarboxylic acids, polyphosphates, ammonium, alkali, copper, cobalt ions and indifferent anions such as chloride and / or sulfate.
- the above-mentioned object is achieved by a process for the production of zinc phosphate coatings containing manganese and magnesium on steel, zinc, aluminum and / or their alloys by spraying, splash-dipping and / or dipping with an aqueous solution
- the aqueous solution containing of free acid from 0.6 to 1.8 points and a total acid content of 15 to 30 points and Na + is present in the amount necessary to adjust the free acid.
- nitrate ions are due to the use of metal nitrates, for example Zn (N ⁇ 3) 2, for the production of the underlying concentrates and therefore the result of the selected (inexpensive) raw materials.
- metal nitrates for example Zn (N ⁇ 3) 2
- a low-zinc process in which nickel is replaced by magnesium is thus described in a first embodiment.
- the present invention is therefore a zinc phosphating process, which in particular Low zinc range can be used.
- phosphate layers are produced which, in addition to zinc and magnesium, also contain manganese as cations.
- the addition of Ni ions can be advantageous.
- improved phosphating results are obtained by the presence of nickel, while a positive effect was not observed in the case of steel surfaces.
- the process for producing zinc phosphate coatings on steel, zinc, aluminum and / or their alloys is modified by dipping, spray-dipping and / or dipping with an aqueous solution in such a way that an aqueous solution is obtained
- the solutions to be used can contain small amounts of nickel (II) ions. In this sense, preference is therefore given to solutions which contain 0.2 to 0.8 g / 1, in particular 0.25 to 0.5 g / 1, of nickel (II) ions.
- 3-nitrobenzenesulfonic acid is used as the organic oxidizing agent.
- the sodium salt of 3-nitrobenzenesulfonic acid is used as the preferred organic oxidizing agent.
- the phosphating is carried out at a temperature in the range from 40 to 70 ° C.
- the surfaces of steel are preferably phosphated in a layer-forming manner in the course of 1 to 5 minutes.
- the surface layers produced with the aid of the method according to the invention can be used well in all fields in which phosphate coatings are used.
- a particularly advantageous application is the preparation of the metal surfaces for painting, in particular electrocoating.
- the surface treatment was carried out on cold-rolled steel St.1405, electrolytically galvanized steel (coating on both sides 7.5 ⁇ m Zn) and hot-dip galvanized steel (coating on both sides 10 ⁇ m Zn).
- Time s 150 150 30 S / 180 T
- Typical layer analysis determination quantitatively by atomic absorption spectroscopy, AAS) of the method for:
- blistering that occurs in paints is defined by specifying the degree of blistering.
- the degree of blistering according to this standard is a measure of a blistering that has occurred on a coating according to the frequency of the blisters per unit area and size of the blisters.
- the degree of bubbles is indicated by a code letter and a code number for the frequency of the bubbles per unit area, as well as a code letter and a code number for the size of the bubbles.
- the identification letter and the identification number mO mean no bubbles, while m5 defines a certain frequency of bubbles per unit area according to the degree of bubbles according to DIN 53 209.
- the size of the bubbles is given the code letter g and the code number in the range from 0 to 5.
- Code letter and code number GO has the meaning - no bubbles - while g5 is shown in accordance with the size of the bubbles in accordance with the degree of bubbles in DIN 53209.
- the degree of blistering is determined, the image of which is most similar to the appearance of the coating.
- the salt spray test according to this standard serves to determine the behavior of paints, coatings and similar coatings when exposed to sprayed sodium chloride solution. If the coating has weak points, pores or injuries, the coating is preferably infiltrated from there. This leads to a reduction in adhesion or to loss of adhesion and corrosion of the metallic substrate.
- the salt spray test is used so that such errors can be recognized and the infiltration can be determined.
- the VW standard P 1210 is an alternating test that consists of a combination of different standardized test methods. So in Over the course of 60 days in the present case, a test cycle was maintained, which consists of a 4-hour salt spray test in accordance with DIN 50021, a 4-hour rest period at room temperature and a 16-hour condensation water constant in accordance with DIN 50017.
- the test bone is bombarded with a defined amount of steel shot with a certain grain size distribution.
- a key figure is assigned to the degree of corrosion.
- the key figure 1 denotes invisible corrosion, while with a key figure 10 the entire surface is practically corroded.
- a round (7 days) test cycle of the VDA change limit test consists of
Landscapes
- Chemical & Material Sciences (AREA)
- Metallurgy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
- Glass Compositions (AREA)
- Dental Preparations (AREA)
- Materials For Medical Uses (AREA)
- Coating By Spraying Or Casting (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3920296A DE3920296A1 (de) | 1989-06-21 | 1989-06-21 | Verfahren zur herstellung von mangan- und magnesiumhaltigen zinkphosphatueberzuegen |
DE3920296 | 1989-06-21 | ||
PCT/EP1990/000919 WO1990015889A1 (de) | 1989-06-21 | 1990-06-12 | Verfahren zur herstellung von mangan- und magnesiumhaltigen zinkphosphatüberzügen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0478648A1 true EP0478648A1 (de) | 1992-04-08 |
EP0478648B1 EP0478648B1 (de) | 1995-01-18 |
Family
ID=6383236
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90909688A Expired - Lifetime EP0478648B1 (de) | 1989-06-21 | 1990-06-12 | Verfahren zur herstellung von mangan- und magnesiumhaltigen zinkphosphatüberzügen |
Country Status (12)
Country | Link |
---|---|
US (1) | US5207840A (de) |
EP (1) | EP0478648B1 (de) |
JP (1) | JPH04506233A (de) |
KR (1) | KR0171219B1 (de) |
AT (1) | ATE117381T1 (de) |
BR (1) | BR9007437A (de) |
CA (1) | CA2062952A1 (de) |
DE (2) | DE3920296A1 (de) |
ES (1) | ES2067031T3 (de) |
PT (1) | PT94426B (de) |
WO (1) | WO1990015889A1 (de) |
ZA (1) | ZA904795B (de) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4210513A1 (de) | 1992-03-31 | 1993-10-07 | Henkel Kgaa | Nickel-freie Phosphatierverfahren |
ES2111949T3 (es) * | 1993-09-06 | 1998-03-16 | Henkel Kgaa | Procedimiento de fosfato exento de niquel. |
DE4440300A1 (de) * | 1994-11-11 | 1996-05-15 | Metallgesellschaft Ag | Verfahren zum Aufbringen von Phosphatüberzügen |
DE19500927A1 (de) * | 1995-01-16 | 1996-07-18 | Henkel Kgaa | Lithiumhaltige Zinkphosphatierlösung |
DE19511573A1 (de) * | 1995-03-29 | 1996-10-02 | Henkel Kgaa | Verfahren zur Phosphatierung mit metallhaltiger Nachspülung |
US5900073A (en) * | 1996-12-04 | 1999-05-04 | Henkel Corporation | Sludge reducing zinc phosphating process and composition |
DE19740953A1 (de) * | 1997-09-17 | 1999-03-18 | Henkel Kgaa | Verfahren zur Phosphatierung von Stahlband |
JP3828675B2 (ja) * | 1998-04-23 | 2006-10-04 | 新日本製鐵株式会社 | 耐食性、加工性に優れた表面処理鋼板およびその製造方法 |
DE19834796A1 (de) | 1998-08-01 | 2000-02-03 | Henkel Kgaa | Verfahren zur Phosphatierung, Nachspülung und kathodischer Elektrotauchlackierung |
US6607844B1 (en) * | 1999-03-15 | 2003-08-19 | Kobe Steel, Ltd. | Zn-Mg electroplated metal sheet and fabrication process therefor |
TW475002B (en) | 1999-07-08 | 2002-02-01 | Kawasaki Steel Co | Perforative corrosion resistant galvanized steel sheet |
EP1146145B1 (de) * | 1999-09-17 | 2008-01-02 | JFE Steel Corporation | Oberflächenbehandeltes stahlblech und verfahren zu dessen herstellung |
DE10109480A1 (de) * | 2001-02-28 | 2002-09-05 | Volkswagen Ag | Verfahren zur Beschichtung einer Aluminiumoberfläche |
JP4233565B2 (ja) * | 2002-07-10 | 2009-03-04 | ヒェメタル ゲゼルシャフト ミット ベシュレンクテル ハフツング | 金属表面を被覆する方法 |
DE10320313B4 (de) * | 2003-05-06 | 2005-08-11 | Chemetall Gmbh | Verfahren zum Beschichten von metallischen Körpern mit einer Phosphatierungslösung, Phosphatierungslösung und die Verwendung des beschichteten Gegenstandes |
DE10323305B4 (de) * | 2003-05-23 | 2006-03-30 | Chemetall Gmbh | Verfahren zur Beschichtung von metallischen Oberflächen mit einer Wasserstoffperoxid enthaltenden Phosphatierungslösung, Phosphatierlösung und Verwendung der behandelten Gegenstände |
US7815751B2 (en) * | 2005-09-28 | 2010-10-19 | Coral Chemical Company | Zirconium-vanadium conversion coating compositions for ferrous metals and a method for providing conversion coatings |
DE102008004728A1 (de) | 2008-01-16 | 2009-07-23 | Henkel Ag & Co. Kgaa | Phosphatiertes Stahlblech sowie Verfahren zur Herstellung eines solchen Blechs |
US10442480B2 (en) * | 2017-06-30 | 2019-10-15 | Caterpillar Inc. | Coating for seal assembly |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3676224A (en) * | 1970-10-16 | 1972-07-11 | Lubrizol Corp | Phosphating solution with scale suppressing characteristics |
US3726720A (en) * | 1971-05-24 | 1973-04-10 | Lubrizol Corp | Metal conditioning compositions |
US4681641A (en) * | 1982-07-12 | 1987-07-21 | Ford Motor Company | Alkaline resistant phosphate conversion coatings |
DE3631759A1 (de) * | 1986-09-18 | 1988-03-31 | Metallgesellschaft Ag | Verfahren zum erzeugen von phosphatueberzuegen auf metalloberflaechen |
US4717431A (en) * | 1987-02-25 | 1988-01-05 | Amchem Products, Inc. | Nickel-free metal phosphating composition and method for use |
DE3711931A1 (de) * | 1987-04-09 | 1988-10-20 | Metallgesellschaft Ag | Verfahren zur bestimmung von zink in phosphatierbaedern |
DE3712339A1 (de) * | 1987-04-11 | 1988-10-20 | Metallgesellschaft Ag | Verfahren zur phosphatierung vor der elektrotauchlackierung |
-
1989
- 1989-06-21 DE DE3920296A patent/DE3920296A1/de not_active Withdrawn
-
1990
- 1990-06-12 EP EP90909688A patent/EP0478648B1/de not_active Expired - Lifetime
- 1990-06-12 ES ES90909688T patent/ES2067031T3/es not_active Expired - Lifetime
- 1990-06-12 BR BR909007437A patent/BR9007437A/pt not_active Application Discontinuation
- 1990-06-12 DE DE59008322T patent/DE59008322D1/de not_active Expired - Fee Related
- 1990-06-12 KR KR1019910701931A patent/KR0171219B1/ko not_active IP Right Cessation
- 1990-06-12 CA CA002062952A patent/CA2062952A1/en not_active Abandoned
- 1990-06-12 JP JP2509708A patent/JPH04506233A/ja active Pending
- 1990-06-12 US US07/776,319 patent/US5207840A/en not_active Expired - Fee Related
- 1990-06-12 WO PCT/EP1990/000919 patent/WO1990015889A1/de active IP Right Grant
- 1990-06-12 AT AT90909688T patent/ATE117381T1/de not_active IP Right Cessation
- 1990-06-19 PT PT94426A patent/PT94426B/pt not_active IP Right Cessation
- 1990-06-20 ZA ZA904795A patent/ZA904795B/xx unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9015889A1 * |
Also Published As
Publication number | Publication date |
---|---|
ES2067031T3 (es) | 1995-03-16 |
WO1990015889A1 (de) | 1990-12-27 |
KR0171219B1 (ko) | 1999-02-18 |
JPH04506233A (ja) | 1992-10-29 |
PT94426A (pt) | 1991-02-08 |
US5207840A (en) | 1993-05-04 |
KR920702731A (ko) | 1992-10-06 |
CA2062952A1 (en) | 1990-12-22 |
DE3920296A1 (de) | 1991-01-10 |
ZA904795B (en) | 1991-02-27 |
BR9007437A (pt) | 1992-04-14 |
PT94426B (pt) | 1997-02-28 |
EP0478648B1 (de) | 1995-01-18 |
DE59008322D1 (de) | 1995-03-02 |
ATE117381T1 (de) | 1995-02-15 |
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