WO2001059180A1 - Procede pour l'enduction de surfaces metalliques, concentre aqueux utilise a cet effet et utilisation des pieces metalliques enduites - Google Patents

Procede pour l'enduction de surfaces metalliques, concentre aqueux utilise a cet effet et utilisation des pieces metalliques enduites Download PDF

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Publication number
WO2001059180A1
WO2001059180A1 PCT/EP2001/000627 EP0100627W WO0159180A1 WO 2001059180 A1 WO2001059180 A1 WO 2001059180A1 EP 0100627 W EP0100627 W EP 0100627W WO 0159180 A1 WO0159180 A1 WO 0159180A1
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Prior art keywords
ions
deposition
aqueous solution
range
pretreatment layer
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PCT/EP2001/000627
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German (de)
English (en)
Inventor
Detlev Seifert
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Chemetall Gmbh
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Priority to AU2001228477A priority Critical patent/AU2001228477A1/en
Publication of WO2001059180A1 publication Critical patent/WO2001059180A1/fr

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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
    • C23C22/07—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
    • 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
    • C23C22/10—Orthophosphates containing oxidants
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/40—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates
    • C23C22/42—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates containing also 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
    • C23C22/40—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates
    • C23C22/44—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates containing also fluorides or complex fluorides
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D13/00—Electrophoretic coating characterised by the process
    • C25D13/20—Pretreatment

Definitions

  • the invention relates to a method for coating metal surfaces with a pretreatment layer prior to the deposition of a thin electrocoat layer, an aqueous concentrate for preparing the aqueous solution for the deposition of the pretreatment layer and the use of the products produced by the method according to the invention.
  • iron phosphate coatings are produced as pretreatment layers before painting by contact with an acidic aqueous mono- or / and orthophosphate-containing phosphating solution and then by electrocoating the entire metal surface and often also by subsequent powder painting of the surface parts that are easily accessible from the outside.
  • These processes are being pushed to the max today. The aim is to make these processes more reliable and cost-effective.
  • the comparatively thick electrocoat layer which is common today in the case of undercuts or / and with a complicated structure, is a major cost component concealed metal parts such as.
  • some radiator elements is still at least 12 ⁇ m, often more than 15 ⁇ m, as the average over the entire surface. Because of the undercuts or hidden cavities, it is often necessary to use approx.
  • the addition of ions of copper and chemically related metals to the phosphating solution allows a pretreatment layer to be formed on which the deposition of the electrodeposition paint is accelerated and made more uniform.
  • the varnish deposition in the method according to the invention is significantly better compared to the easily accessible parts than in the method according to the prior art.
  • the object of the invention is to propose an iron phosphating process in which it is possible to apply the subsequently applied electrocoat layer as a whole thinner than according to the prior art, without thereby impairing the corrosion protection.
  • the object is achieved by a method for coating metal surfaces with a pretreatment layer prior to the deposition of a thin electrocoat layer, in which a pretreatment layer based on iron phosphate / iron oxide / iron hydroxide containing copper, silver, gold, platinum, iridium, osmium, palladium, Rhodium or / and ruthenium is deposited. Claims 2 to 18 further develop the method. Furthermore, the object is achieved by an aqueous concentrate according to claim 19.
  • an aqueous solution (phosphating solution) is preferably used for the deposition of the pretreatment layer, which contains ions of copper, silver, gold, platinum, iridium, osmium, palladium, rhodium and / or ruthenium in the range of 0.2 has up to 40 mg per liter, in particular from 0.5 to 20 mg per liter, preferably from 1 to 15 mg per liter, particularly preferably from 2 to 10 mg per liter. Copper ions are preferred, as are mixtures of copper ions with ions of one of the other noble metals mentioned.
  • the phosphate solution in the phosphate solution can be in the range from 1 to 10 g per liter, preferably from 2 to 8 g per liter, particularly preferably from 3.5 to 5.5 g per liter.
  • the phosphate, in particular to a concentrate, is preferably added by adding orthophosphoric acid.
  • the phosphating solution preferably has an ion content of at least one alkali metal and / or alkaline earth metal, in particular sodium, in the range from 0.3 to 3.5 g per liter, preferably from 0.6 to 3 g per liter, particularly preferably from 1 to 2.5 g per liter.
  • the addition of sodium ions helps to adjust the pH and is preferably bound to the phosphoric acid.
  • the sodium ions can be introduced, for example, by adding sodium hydroxide.
  • the phosphating solution preferably has an ammonium ion content in the range from 2 to 50 mg per liter, preferably from 5 to 30 mg per liter, particularly preferably from 8 to 20 mg per liter.
  • the ammonium ions in combination with molybdate / molybdenum ions can cause the oxidation of Fe ° or Fe 2+ to Fe 3+ or corresponding other metals or metal ions. They therefore have an accelerating effect.
  • the phosphating solution preferably has a free fluoride ion content in the range from 0 to 400 mg per liter, preferably from 1 to 350 mg per liter, particularly preferably from 50 to 300 mg per liter. Fluoride is preferably added by adding hydrofluoric acid.
  • the phosphating solution preferably has a content of molybdenum ions and / or molybdate ions in the range from 0 to 500 mg per liter, in particular at least 5 mg per liter, preferably from 15 to 250 mg per liter, particularly preferably from 30 to 200 mg per liter as MoO 3 .
  • the phosphating solution preferably has a nitrate ion content in the range from 0 to 5 g per liter, preferably from 0.001 to 2 g per liter, particularly preferably from 0.002 to 1 g per liter.
  • the content of nitrate ions enables the pickling attack to be increased, the phosphate layer formation to be evened out and has an accelerating effect.
  • the phosphating solution preferably has a content of at least one nonionic and / or anionogenic surfactant in the range from 50 to 5000 mg per liter, preferably from 100 to 4000 mg per liter, particularly preferably from 200 to 3000 mg per liter. These surfactants ensure better wetting of the metal surface and thus more uniform removal of organic contaminants on the metal surface, more uniform pickling attack on the metal surface and more uniform formation of phosphate layers on the metal surface.
  • the phosphating solution preferably has a content of at least one organic solubilizer in the range from 0 to 200 mg per liter, preferably from 10 to 100 mg per liter, particularly preferably from 20 to 80 mg per liter. The solubilizers serve to ensure that the surfactants remain in one component in the aqueous solution.
  • the phosphating solution preferably has a content of at least one accelerator, in particular an accelerator selected from the group of nitroguanidine, chlorate ions and NBS ions, in the range from 0 to 3 g per liter, preferably from 0.2 to 2.5 g per liter, particularly preferably from 0.3 to 2 g per liter.
  • This accelerator works in a wider pH range, so that you can work in a wider pH range.
  • the phosphating solution advantageously has no or only a low content of nitrite ions, chromium ions, nickel ions, cobalt ions, manganese ions, cadmium ions and zinc ions. Significant levels of these ions usually only occur when such ions are released from the metallic surface. If the bath had a higher content of at least one of these substances, the processed solution might have to elaborate disposal can be arranged.
  • the phosphating solution preferably also contains no chloride and sulfate ions for reasons of corrosion protection of the metal parts to be coated.
  • Certain levels of aluminum in the phosphating solution may possibly for the precipitation of cryolite, such as calcium lead to the precipitation of calcium fluoride. It is therefore advantageous to keep the contents of such ions within limits in which precipitation can be avoided or kept to a minimum.
  • the phosphating solution preferably has a temperature in the range from 30 to 70 ° C., preferably from 40 to 65 ° C., particularly preferably from 50 to 60 ° C.
  • the phosphating solution preferably has a pH in the range from 3.5 to 6.5, preferably from 4 to 5.5, particularly preferably from 4.5 to 4.8.
  • the pH should be set comparatively precisely.
  • the phosphating solution preferably has a total acid number in the range from 2 to 20, preferably from 6 to 14, very particularly preferably from 8 to 12.
  • the total acid score is the number of ml that results when 10 ml of phosphating solution, which has been diluted to 50 ml with deionized water, is titrated with 0.1 normal sodium hydroxide solution to a pH of 8.7.
  • the phosphating solution preferably has a free acid content of up to 2 points, preferably from 0 to 1.5 points, particularly preferably from 0.01 to 1 point.
  • the free acid score is the number of ml that results when 10 ml of phosphating solution, which has been diluted to 50 ml with deionized water, is titrated with 0.1-normal sodium hydroxide solution to a pH of 4.2. whereby KCI is added to the sample to be titrated to saturation if the sample contains complex-bound fluoride in order to largely prevent its dissociation.
  • water quality for the phosphating solution, as well as for the aqueous concentrate, which can be used both for making up and for supplementing the phosphating solution are city water, which is preferably decarbonized at higher degrees of hardness, but also purer water qualities, e.g. demineralized water well suited.
  • the treatment course can include the following steps: a) Cleaning and phosphating with the phosphating solution according to the invention
  • the metal parts can also be immersed in a bath for a period of 1 to 10 minutes, particularly 1.5 to 6 minutes.
  • the times mentioned refer to the sum of the pretreatment times for pre-cleaning / phosphating and cleaning / phosphating.
  • cleaning and phosphating can also be carried out in two successive baths: It is advisable to set a higher total acid number in the first bath than in the second bath and to ensure that the free acid content in both baths is as low as possible is.
  • the rinsing is preferably carried out over a period of 20 to 80 seconds with a spray pressure of 0.3 to 2.5 bar.
  • An unheated bath with fresh water supply of city water quality is sufficient.
  • City water quality is preferred in order to have a larger buffer effect.
  • the rinsing can be carried out for 20 to 80 seconds with a spray pressure of 0.3 to 2.5 bar.
  • Deionized water is preferably used here.
  • the salt load should be reduced as much as possible by suitable measures such as downstream spray ring with deionized water.
  • the drained water should not exceed an electrical conductivity value of 50 ⁇ S / cm due to the subsequent electrodeposition.
  • the metal parts pretreated in this way are usually moved directly into the electrocoating system. Drying can then be omitted.
  • the method according to the invention is preferably used for metal parts - in particular for those of complex geometry - particularly preferably for metal parts made of iron or steel materials, aluminum or aluminum alloys, magnesium alloys or galvanized metal parts.
  • the method according to the invention can be used in particular for simple structural steels such as e.g. Use St 370 well.
  • the pretreatment layer can be referred to as a conversion layer, even though ions which have been removed from the metal surface are involved in the layer structure. It is ideal as temporary storage protection and as a primer for paintwork.
  • the pretreatment layer preferably has a thickness of 0.05 to 0.6 ⁇ m, in particular 0.15 to 0.4 ⁇ m, and a weight per unit area of 0.1 to 1.2 g / m 2 , preferably 0.2 to 0 , 8 g / m 2 . It is advantageously amorphous.
  • the pretreatment layer has contents of iron phosphate, iron oxide and / or iron hydroxide. It is the result of a so-called iron phosphating.
  • Lacquer layers with a layer thickness of 0.5 to 100 ⁇ m can be applied to the pretreatment layer, in particular by cathodic or anodic dip coating and, if appropriate, by at least one subsequent coating.
  • the first dip coating layer applied to the pretreatment layer has a layer weight in the range from 18 to 22.5 g / m 2 , which, assuming a density of the baked coating layer of 1.5 g / cm 3, has an average layer thickness in the range from 12 to 15 ⁇ m, or even higher Layer weights, while in the method according to the invention on similar metal parts with hidden areas, a layer weight approximately in the range of 12 to 17.5 g / m 2 , which assuming a density of the baked lacquer layer of 1.5 g / cm 3 of an average layer thickness in Range of 8 to 11.7 microns corresponds.
  • a lacquer layer or a different organic coating or / and an adhesive layer in particular with lacquered metal parts such as e.g. be applied in the form of plates.
  • the additional lacquer layer usually has decorative functions and slightly improves corrosion protection; it is often applied by powder painting.
  • metal or plastic parts can be glued on, which are advantageously also pretreated and / or painted. These glued parts have e.g. in the case of flat radiators, often the shape of plates.
  • an aqueous concentrate which has the following contents is used to prepare the phosphating solution:
  • Ions of copper, silver, gold, platinum, iridium, osmium, palladium, rhodium and / or ruthenium in each case from 0.005 to 0.4% by weight, preferably from 0.01 to 0.2% by weight, particularly preferably from 0.02 to 0.15% by weight, in particular copper ions,
  • Phosphate ions of 5 to 30% by weight of P 2 O 5 , at least one accelerator of 0.2 to 5% by weight in each case,
  • Molybdenum ions and / or molybdenum ions from a total of 0.1 to 1% by weight, calculated as MoO 3 , and free fluoride ions from 0.1 to 2% by weight.
  • the aqueous concentrate preferably also has a content of: at least one nonionic and / or anionogenic surfactant of 0.05 to 15% by weight or / and of at least one organic solubilizer each of 0.05 to 0.5% by weight or / and ions of at least one alkali metal or / and alkaline earth metal of 2 to 10% by weight, in particular of sodium ions.
  • the metal parts coated by the process according to the invention can be used as radiator elements, radiators, frames, plates, claddings, angles, components in the interior of vehicles or aircraft, components in apparatus and mechanical engineering.
  • the process according to the invention has the advantage over the previously described and practiced pretreatment processes by iron phosphating that the thickness of the first lacquer layer can be significantly reduced without the corrosion protection being impaired.
  • Zone 2 - cleaning and phosphating Treatment time: 45 sec. Temperature: 50 ° C injection pressure: 1, 2 bar total acid: 3 points free acid: 0 points pH: 5.3.
  • composition of the phosphating bath can have, for example, the following contents in g / L:
  • CO 2 may contain coal
  • the pH was adjusted by adding NaOH.
  • Treatment time 30 sec.
  • Treatment time 30 sec.Temperature: unheated, i.e. Room temperature spray pressure. 1, 2 bar
  • Water quality Contaminated, fully demineralized water, in which demineralized water has taken up contaminated water from the rinsing and from the rinsing with the spray ring.
  • the water quality is far better than city water.
  • the pretreated metal parts were passed into a blowing zone with 4000 m 3 of cold air per hour and then into the cathodic electrodeposition coating, where the pretreated metal parts were coated at 22 ° C. for 90 seconds.
  • the substrates to be coated were made of normal St 370 structural steel and had various geometric shapes, as are customary for the design of radiators.
  • a radiator that was particularly problematic for coating was selected: Type 22 radiators 600 mm high and 1000 mm wide.
  • the type 22 has two external water channels made of structured plates and two internal convector sheets. This means that it has a large number of shielded areas.
  • the task was to coat the surfaces of the convectors.
  • the convectors since they are on the inside, represent Faraday cages.
  • the task was to keep the paint weight, ie also the paint layer averaged over the entire surface, as low as possible.
  • the radiators were weighed in the dry state before and after the cathodic dip coating. In the current series, the dip coat thickness was also measured. However, since these measurements had to be limited to the elements of the water channels, that is to say the outer elements, and could only be carried out selectively, the measurement results can only be evaluated approximately.
  • radiators were pretreated in a first production line and in a parallel production line without being subsequently painted in the line. After drying, the pretreated metal parts were weighed and then all four radiators in the first production line were dip-coated under identical conditions in order to avoid different settings of different paint baths.
  • Example 2 (according to the invention or comparative example):
  • butyl glycol was also added to all paint baths to improve the paint flow, which is usually led to increased layer weights.
  • the coating layer weights of the radiators pretreated with the copper-containing phosphating solution were reduced to 120 g in the example according to the invention, while the reference heating elements of the parallel production line (comparative example) had coating layer weights of 162 g and 165 g.
  • the addition of butyl glycol had an effect on the reference radiators with increasing layer weights, but not on the radiators pretreated according to the invention. Rather, in the radiators pretreated according to the invention, despite the addition of butyl glycol, there was a significant reduction in the layer weight.

Abstract

L'invention concerne un procédé pour l'enduction de surfaces métalliques à l'aide d'une couche de préparation avant le dépôt d'une mince couche de peinture électrophorétique. Le procédé selon l'invention est caractérisé en ce qu'on dépose une couche de préparation à base de phosphate de fer, d'oxyde de fer ou d'hydroxyde de fer ayant une teneur en cuivre, argent, or, platine, iridium, osmium, palladium, rhodium ou ruthénium. L'invention concerne également un concentré aqueux servant à préparer une solution aqueuse pour le dépôt d'une couche de préparation. Ce concentré aqueux contient : des ions cuivre, argent, or, platine, iridium, osmium, palladium, rhodium ou ruthénium en une teneur de 0,005 à 0,4 % en poids respectivement, des ions phosphate en une teneur de 5 à 30 % en poids de P2O5, au moins un accélérateur en une teneur de 0,2 à 5 % en poids, des ions molybdène ou molybdate en une teneur de 0,1 à 1 % en poids au total, calculé en tant que MoO3, ainsi que des ions fluorure libres en une teneur de 0,1 à 2 % en poids.
PCT/EP2001/000627 2000-02-12 2001-01-20 Procede pour l'enduction de surfaces metalliques, concentre aqueux utilise a cet effet et utilisation des pieces metalliques enduites WO2001059180A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001228477A AU2001228477A1 (en) 2000-02-12 2001-01-20 Method for coating metal surfaces, aqueous concentrate used therefor and use of coated metal parts

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2000106338 DE10006338C2 (de) 2000-02-12 2000-02-12 Verfahren zur Beschichtung von Metalloberflächen, wässeriges Konzentrat hierzu und Verwendung der beschichteten Metallteile
DE10006338.1 2000-02-12

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WO2001059180A1 true WO2001059180A1 (fr) 2001-08-16

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DE (1) DE10006338C2 (fr)
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Cited By (2)

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Publication number Priority date Publication date Assignee Title
WO2010071753A1 (fr) * 2008-12-18 2010-06-24 Ppg Industries Ohio, Inc. Procédés de passivation de substrats métalliques, et substrats métalliques avec revêtement dérivés
US10113070B2 (en) 2015-11-04 2018-10-30 Ppg Industries Ohio, Inc. Pretreatment compositions and methods of treating a substrate

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DE10261014B4 (de) * 2002-12-24 2005-09-08 Chemetall Gmbh Verfahren zur Beschichtung von Metalloberflächen mit einer Alkaliphosphatierungslösung, wässeriges Konzentrat und Verwendung der derart beschichteten Metalloberflächen
DE102006024614A1 (de) * 2006-05-26 2007-11-29 Schaeffler Kg Verfahren zum Behandeln einer Wälzlagerkomponente und Wälzlagerkomponente

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DE4210513A1 (de) * 1992-03-31 1993-10-07 Henkel Kgaa Nickel-freie Phosphatierverfahren
DE19733978A1 (de) * 1997-08-06 1999-02-11 Henkel Kgaa Mit N-Oxiden beschleunigtes Phosphatierverfahren

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DE4013483A1 (de) * 1990-04-27 1991-10-31 Metallgesellschaft Ag Verfahren zur phosphatierung von metalloberflaechen
DE19540085A1 (de) * 1995-10-27 1997-04-30 Henkel Kgaa Nitratarme, manganfreie Zinkphosphatierung
DE19544614A1 (de) * 1995-11-30 1997-06-05 Metallgesellschaft Ag Verfahren zur Phospatierung von Metalloberflächen
DE19634732A1 (de) * 1996-08-28 1998-03-05 Henkel Kgaa Rutheniumhaltige Zinkphosphatierung

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DE2359940A1 (de) * 1973-12-01 1975-06-12 Gewerk Victor Chem Werke Verfahren zum phosphatieren von metallen
DE4210513A1 (de) * 1992-03-31 1993-10-07 Henkel Kgaa Nickel-freie Phosphatierverfahren
DE19733978A1 (de) * 1997-08-06 1999-02-11 Henkel Kgaa Mit N-Oxiden beschleunigtes Phosphatierverfahren

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010071753A1 (fr) * 2008-12-18 2010-06-24 Ppg Industries Ohio, Inc. Procédés de passivation de substrats métalliques, et substrats métalliques avec revêtement dérivés
CN102282292A (zh) * 2008-12-18 2011-12-14 Ppg工业俄亥俄公司 使金属基材钝化的方法和相关的涂覆的金属基材
US8282801B2 (en) 2008-12-18 2012-10-09 Ppg Industries Ohio, Inc. Methods for passivating a metal substrate and related coated metal substrates
RU2486286C2 (ru) * 2008-12-18 2013-06-27 Ппг Индастриз Огайо, Инк. Способ пассивирования металлических подложек и соответствующие металлические подложки с покрытием
US10113070B2 (en) 2015-11-04 2018-10-30 Ppg Industries Ohio, Inc. Pretreatment compositions and methods of treating a substrate

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