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EP0459549B1 - Obtention de couches de conversion sur des surfaces en zinc ou en alliage de zinc - Google Patents

Obtention de couches de conversion sur des surfaces en zinc ou en alliage de zinc Download PDF

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Publication number
EP0459549B1
EP0459549B1 EP91201020A EP91201020A EP0459549B1 EP 0459549 B1 EP0459549 B1 EP 0459549B1 EP 91201020 A EP91201020 A EP 91201020A EP 91201020 A EP91201020 A EP 91201020A EP 0459549 B1 EP0459549 B1 EP 0459549B1
Authority
EP
European Patent Office
Prior art keywords
rinsing
solution
post
effected
zinc
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.)
Expired - Lifetime
Application number
EP91201020A
Other languages
German (de)
English (en)
Other versions
EP0459549A1 (fr
Inventor
Thomas Kolberg
Werner Dr. Rausch
Peter Dr. Schubach
Thomas Wendel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chemetall GmbH
Original Assignee
Metallgesellschaft AG
Continentale Parker Ste
Continentale Parker SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Metallgesellschaft AG, Continentale Parker Ste, Continentale Parker SA filed Critical Metallgesellschaft AG
Publication of EP0459549A1 publication Critical patent/EP0459549A1/fr
Application granted granted Critical
Publication of EP0459549B1 publication Critical patent/EP0459549B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • C23C22/60—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 alkaline aqueous solutions with pH greater than 8
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • 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
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/73—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/82—After-treatment
    • C23C22/83—Chemical after-treatment

Definitions

  • the invention relates to a method for producing conversion coatings on surfaces of zinc or zinc alloys, in which in a first step the surfaces are brought into contact with a solution which contains at least two different polyvalent metal ions and complexing agents in such an amount that the polyvalent metal ions are kept in solution, and has a pH ⁇ 11, and in which rinsing is carried out in a subsequent step with a rinsing solution, and its use as a pretreatment for subsequent painting, film coating or adhesive coating.
  • Such a method for producing a conversion layer is known in particular as a pretreatment before painting and film coating from DE-C-1 521 854.
  • aqueous alkaline solutions which act as so-called non-alkali metal ions of one or more of the metals silver, magnesium, cadmium, aluminum, tin, titanium, antimony, molybdenum, chromium, cerium, tungsten, manganese, cobalt , Iron and nickel included.
  • Particularly suitable solutions are those which contain ions of iron or cobalt with another of the metals mentioned as non-alkali metal ions.
  • the solutions contain sufficient organic complexing agents to keep the non-alkali metal ions in solution.
  • the conversion coatings produced by means of these ions increase the corrosion resistance and improve the adhesion of subsequently applied organic coatings.
  • Corrosion resistance and adhesion are further improved if the surfaces are rinsed with an acidic, hexavalent chromium and possibly additionally trivalent chromium solution after the conversion layer has been produced. (DE-C-1 521 854)
  • metal surfaces in particular made of steel, aluminum or zinc, and alloys thereof, which may have a conversion coating
  • an aqueous solution which contains reactive organosilane and additional titanium and / or zirconium compound EP-A-153 973
  • Concrete coatings are zinc or iron phosphate layers or chromate layers, in the illustration of the prior art u. a. also called metal oxide coatings.
  • metal surfaces made of iron or steel are to be treated with solutions containing aluminum ions, up to 200 ppm fluoride ions and preferably additionally up to 1000 ppm in order to avoid rust spots during drying and until they are finally protected by painting or another type of surface treatment
  • Ions contain at least one of the metals titanium, zirconium and hafnium.
  • the object of the invention is to provide a method for producing conversion coatings on surfaces made of zinc or zinc alloys, which avoids the disadvantages of the method mentioned and in particular does not or only to a very small extent burden the environment and is at least the same in terms of corrosion protection and paint adhesion behaves well.
  • the object is achieved by designing the method of the type mentioned at the outset in accordance with the invention in such a way that rinsing is carried out with a rinsing solution which contains aluminum, zirconium and fluoride with a molar ratio of Al: Zr: F of (0.15 to 2.0): 1: (5 to 16) and whose pH is set to 2 to 5.
  • Rinse solutions containing aluminum fluorozirconate with a molar ratio of Al: Zr: F of (0.15 to 0.67): 1: (5 to 7) and a total concentration of Al + Zr + F of 0.1 to 2 g are admittedly included / l have, described in EP-A1-410 497. However, they are used for the passivative rinsing of phosphate layers applied to metal surfaces.
  • the method according to the invention is suitable for all surfaces which contain zinc or zinc alloys, such as, for example, materials made of solid zinc or solid zinc alloys, but also for those whose surface is electrolytically galvanized or alloy-galvanized by deposition from the gas phase or in the hot-dip process has been.
  • zinc or zinc alloys such as, for example, materials made of solid zinc or solid zinc alloys, but also for those whose surface is electrolytically galvanized or alloy-galvanized by deposition from the gas phase or in the hot-dip process has been.
  • Aluminum, silicon, lead, iron, nickel, cobalt and manganese are particularly suitable alloying partners for zinc.
  • both one-sided and two-sided galvanizing or alloy galvanizing can be used.
  • the surfaces should be bare and as free of grease as possible. If necessary, they are cleaned alkaline, neutral or acidic before the conversion treatment and then expediently rinsed with water.
  • the surface may not need to be cleaned and degreased beforehand. Instead, in these cases, by adding surfactants to the treatment in the first stage, cleaning and degreasing are carried out using the same treatment solution that is used to produce the conversion coating.
  • the main advantage of this embodiment is that the entire pretreatment of the surface can be carried out in fewer steps, since the separate cleaning and the associated water rinsing are eliminated.
  • the application of the alkaline solution used in the first stage can e.g. in spraying, dipping or flooding.
  • alkaline solutions have been found to be those containing iron (III) ions and additionally cobalt and / or nickel and / or chromium (III) and / or aluminum ions, the total content of which was between 0.3 and 3 g / l, preferably between 0.4 and 1.2 g / l.
  • the polyvalent metal ions can be used as salts of inorganic acids, for example nitric acid, or as salts of organic acids, for example formic acid, in particular also Acetic acid can be used. Salts of organic acids, which can simultaneously serve as complexing agents, are also suitable.
  • Amphoteric metals, such as aluminum, can also be dissolved in the form of the hydroxyl complex without an additional anion or complexing agent.
  • organic chelating agents of various types can be used as complexing agents: for example dicarboxylic acids (malonic acid, fumaric acid etc.); Amino acids (eg glycine); Hydroxycarboxylic acids (e.g. citric acid, gluconic acid, lactic acid); 1,3-diketones (e.g. acetylacetone); aliphatic polyalcohols (e.g. sorbitol, 1,2-ethanediol); aromatic carboxylic acids (eg salicylic acid, phthalic acid); Aminocarboxylic acid (e.g. ethylenediaminetetraacetic acid).
  • Other complexing agents such as methanephosphonic acid diethanolamide, can also be used.
  • the solution must contain at least such an amount of complexing agent that the multivalent metal ions present can be bound in a completely complex manner.
  • the complexing agent content must also be increased. Since increasing amounts of certain complexing agents, which are acidic in nature, can reduce the alkalinity of the solution, complexing agents are preferably used in Form of neutral salts, especially the alkali metal salts used. It has been found that excess amounts of complexing agents are of no benefit.
  • salts of gluconic acid but especially hexahydroxyheptanoic acid
  • the content of complexing agent in the solution should be between 0.05 and 10 g / l, in most applications between 1.5 and 5.5 g / l (based on the sodium salt of hexahydroxyheptanoic acid).
  • the aqueous solution must have a pH ⁇ 11.
  • the best results are achieved in the pH range from 12.2 to 13.3.
  • the adjustment of the pH value can e.g. by triethanolamine, alkali metal hydroxides, alkali metal carbonates, alkali metal phosphates, alkali metal polyphosphates, alkali metal pyrophosphates, alkali metal borates, alkali metal silicates or mixtures thereof.
  • the most advantageous are alkali metal hydroxides, especially sodium hydroxide.
  • the temperature of the solution of the first stage can in principle be between 20 ° C and 90 ° C.
  • the preferred temperature range is 45 to 65 ° C.
  • the treatment time is usually 2 to 60 seconds, preferably 5 to 30 seconds. It depends, among other things, on the application technology. For example, the duration of treatment in spraying is shorter than in diving under otherwise the same circumstances.
  • solutions with a lower metal ion concentration require higher temperatures and longer treatment times than those with a higher metal ion concentration.
  • excess treatment solution should be removed as far as possible from the zinc or zinc alloy surface. This can e.g. by draining, squeezing, blowing off or rinsing with water or with an aqueous solution which has been acidified, for example with an inorganic or organic acid (hydrofluoric acid, boric acid, nitric acid, formic acid, acetic acid etc.).
  • an inorganic or organic acid hydrofluoric acid, boric acid, nitric acid, formic acid, acetic acid etc.
  • the application of the rinse solution can e.g. by dipping, flooding, spraying or rolling.
  • a preferred embodiment of the invention consists in rinsing with a solution which contains aluminum, zirconium and fluoride in a total concentration Al + Zr + F between 0.1 and 8 g / l, preferably between 0.2 and 5 g / l.
  • the molar ratios Al: Zr: F should advantageously be set to (0.15 to 0.67): 1: (5 to 7).
  • the rinsing solutions used in the process according to the invention contain, inter alia, acidic aluminum fluorozirconates and, in the case of an excess of aluminum, other salts of aluminum (for example fluorides Tetrafluoroborates, nitrates). They can be produced, for example, by first dissolving metallic zirconium or zirconium carbonate in aqueous hydrofluoric acid, forming complex fluorozirconic acid. Then metallic aluminum or aluminum hydroxide or an aluminum salt, for example nitrate, fluoride, tetrafluoroborate, formate, acetate, preferably in dissolved form, is added and, if necessary, dissolved. A possible slight clouding of the solution does not impair the effectiveness. Although the described manufacturing route is preferred, the solutions can also be prepared in other ways.
  • the pH of the solution is preferably adjusted with cations of volatile bases. These include in particular ammonium, ethanolammonium and di- and tri-ethanolammonium.
  • volatile bases include in particular ammonium, ethanolammonium and di- and tri-ethanolammonium.
  • rinsing is carried out with an aqueous solution which additionally contains at least one of the anions benzoate, caprylate, ethylhexoate, salicylate in a total concentration of preferably 0.05 to 0.5 g / l.
  • the anions can be introduced via the corresponding acids or their salts.
  • the duration of the application of the rinse solution is generally between about 1 and 120 seconds, according to a further expedient embodiment of the invention between 1 and 30 seconds.
  • the application temperature can be between 20 ° C and about 80 ° C. Temperatures between 20 and 50 ° C are preferred.
  • Demineralized or low-salt water is preferably used to prepare the rinse bath. Water with a high salt content is less suitable for bath preparation.
  • the surface can e.g. air-dried or oven-dried, if necessary rinsed with deionized water beforehand.
  • An advantageous embodiment of the invention provides that the surface is accelerated after the passivative rinsing, e.g. dry with hot air or infrared radiation.
  • the method according to the invention primarily serves as preparation of the zinc or zinc alloy surfaces before painting, film coating or the application of adhesives. It increases the adhesion of the organic films to the metallic substrate, improves their resistance to blistering when exposed to corrosion and inhibits the corrosion penetration from damage points in the film.
  • the sheets were then rinsed with water and rinsed passively. For this purpose, the sheets were immersed in the rinse solution for 5 seconds and then excess solution was removed by squeezing. After a drying time of 0.5 min in a forced air oven at 75 ° C, the pretreated sheets were coated with an epoxy primer and an acrylate top coat. The layer thickness of the total varnish was approx. 25 ⁇ m.
  • the percentage of the chipped paint surface of the total curved surface is given as the tested size in%.
  • the rinsing solutions used were diluted 1.6 g / l (rinsing solution A) or 20 g / l (rinsing solution B) of an aqueous concentrate with 0.855% by weight Al and 8.62% by weight Zr and 10 , 7 wt .-% F using deionized water.
  • the pH in both solutions had been adjusted to approximately 3.6 with ammonia.
  • composition of the rinse solutions was:
  • a comparison of the table values shows that the method according to the invention in any case provided at least as good or better values as the comparison method also tested with a rinsing solution based on Cr (VI) / Cr (III).

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  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Claims (12)

  1. Procédé de production de couches de conversion sur des surfaces en zinc ou en alliages de zinc, dans lequel, dans une première étape, les surfaces sont mises en contact avec une solution contenant au moins deux ions métalliques polyvalents différents, ainsi que des agents de complexation en quantités telles que les ions métalliques polyvalents sont maintenus en solution, solution dont le pH est supérieur ou égal à 11, et dans lequel, ensuite, on rince les surfaces avec une solution de rinçage, caractérisé en ce que l'on rince avec une solution de rinçage contenant de l'aluminium, du zirconium et du fluorure selon un rapport molaire Al:Zr:F de (0,15 à 2,0):1: (5 à 16), et dont le pH est ajusté à une valeur comprise entre 2 et 5.
  2. Procédé selon la revendication 1, caractérisé en ce que l'on rince avec une solution de rinçage dont la concentration totale en Al+Zr+F est comprise entre 0,1 et 8,0 g/l.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'on rince avec une solution de rinçage dont la concentration totale en Al+Zr+F est comprise entre 0,2 et 5,0 g/l.
  4. Procédé selon la revendication 1, 2 ou 3, caractérisé en ce que l'on rince avec une solution de rinçage dans laquelle les rapports molaires Al:Zr:F sont ajustés pour valoir (de 0,15 à 0,67):1:(de 5 à 7).
  5. Procédé selon l'une ou plusieurs des revendications 1 à 4, caractérisé en ce que l'on rince avec une solution de rinçage dont le pH est ajusté à l'aide de cations de bases volatiles.
  6. Procédé selon la revendication 5, caractérisé en ce que l'on rince avec une solution de rinçage dont le pH est ajusté à l'aide de composés d'ammonium, d'éthanolammonium, de di- ou de tri-éthanolammonium.
  7. Procédé selon l'une ou plusieurs des revendications 1 à 6, caractérisé en ce que l'on rince avec une solution de rinçage qui contient, en plus, au moins l'un des anions benzoate, caprylate, éthylhexoate, salicylate, en une concentration totale comprise entre 0,05 et 0,5 g/l.
  8. Procédé selon l'une ou plusieurs des revendications 1 à 7, caractérisé en ce que l'on rince avec une solution de rinçage pour une durée comprise entre 1 et 30 secondes.
  9. Procédé selon l'une ou plusieurs des revendications 1 à 8, caractérisé en ce que l'on rince avec une solution de rinçage dont la température est comprise entre 20 et 80 °C.
  10. Procédé selon l'une ou plusieurs des revendications 1 à 9, caractérisé en ce que l'on rince avec une solution de rinçage dont la température est comprise entre 20 et 50 °C.
  11. Procédé selon l'une ou plusieurs des revendications 1 à 10, caractérisé en ce que l'on sèche la surface après le rinçage.
  12. Utilisation du procédé selon l'une ou plusieurs des revendications 1 à 11, comme préparation à un traitement ultérieur de revêtement par une peinture, de revêtement par un film ou de revêtement par un adhésif.
EP91201020A 1990-05-29 1991-04-29 Obtention de couches de conversion sur des surfaces en zinc ou en alliage de zinc Expired - Lifetime EP0459549B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4017186A DE4017186A1 (de) 1990-05-29 1990-05-29 Erzeugung von konversionsueberzuegen auf zink- oder zinklegierungsoberflaechen
DE4017186 1990-05-29

Publications (2)

Publication Number Publication Date
EP0459549A1 EP0459549A1 (fr) 1991-12-04
EP0459549B1 true EP0459549B1 (fr) 1994-08-17

Family

ID=6407363

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91201020A Expired - Lifetime EP0459549B1 (fr) 1990-05-29 1991-04-29 Obtention de couches de conversion sur des surfaces en zinc ou en alliage de zinc

Country Status (8)

Country Link
EP (1) EP0459549B1 (fr)
JP (1) JP3083872B2 (fr)
AU (1) AU633728B2 (fr)
BR (1) BR9102173A (fr)
CA (1) CA2041892C (fr)
DE (2) DE4017186A1 (fr)
ES (1) ES2057734T3 (fr)
ZA (1) ZA914085B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19733972A1 (de) 1997-08-06 1999-02-11 Henkel Kgaa Alkalische Bandpassivierung
DE102010001686A1 (de) 2010-02-09 2011-08-11 Henkel AG & Co. KGaA, 40589 Zusammensetzung für die alkalische Passivierung von Zinkoberflächen
ITMI20102198A1 (it) * 2010-11-26 2012-05-27 Np Coil Dexter Ind Srl Processo di pretrattamento su coil in acciaio zincato preverniciato esente da metalli pesanti
JP6051171B2 (ja) 2011-02-08 2016-12-27 日本パーカライジング株式会社 ジルコニウム酸化物で前処理された亜鉛表面の腐食性能を改善するためのプロセス及び組成物
EP2503025B1 (fr) 2011-03-22 2013-07-03 Henkel AG & Co. KGaA Traitement en plusieurs étapes de protection contre la corrosion des pièces métalliques ayant au moins partiellement une surface en zinc ou en alliages de zinc

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0410497A1 (fr) * 1989-07-28 1991-01-30 METALLGESELLSCHAFT Aktiengesellschaft Procédé pour le rinçage passif de couches de phosphates

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3501352A (en) * 1965-08-02 1970-03-17 Hooker Chemical Corp Composition and method for treating zinc surfaces
US3695942A (en) * 1970-12-02 1972-10-03 Amchem Prod Zirconium rinse for phosphate coated metal surfaces
US3852123A (en) * 1972-11-20 1974-12-03 Pennwalt Corp Sealing rinses for phosphate coatings on metal
JPS6022067B2 (ja) * 1982-09-30 1985-05-30 日本パ−カライジング株式会社 金属表面の皮膜形成方法
US4496404A (en) * 1984-05-18 1985-01-29 Parker Chemical Company Composition and process for treatment of ferrous substrates
US4650526A (en) * 1986-03-18 1987-03-17 Man-Gill Chemical Company Post treatment of phosphated metal surfaces by aluminum zirconium metallo-organic complexes

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0410497A1 (fr) * 1989-07-28 1991-01-30 METALLGESELLSCHAFT Aktiengesellschaft Procédé pour le rinçage passif de couches de phosphates

Also Published As

Publication number Publication date
AU633728B2 (en) 1993-02-04
CA2041892C (fr) 2000-10-03
JPH04231479A (ja) 1992-08-20
EP0459549A1 (fr) 1991-12-04
JP3083872B2 (ja) 2000-09-04
AU7617891A (en) 1991-12-05
ES2057734T3 (es) 1994-10-16
BR9102173A (pt) 1991-12-24
ZA914085B (en) 1993-01-27
CA2041892A1 (fr) 1991-11-30
DE59102544D1 (de) 1994-09-22
DE4017186A1 (de) 1991-12-05

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