EP0056881A1 - Procédé pour la phosphatation de métaux - Google Patents

Procédé pour la phosphatation de métaux Download PDF

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Publication number
EP0056881A1
EP0056881A1 EP81201244A EP81201244A EP0056881A1 EP 0056881 A1 EP0056881 A1 EP 0056881A1 EP 81201244 A EP81201244 A EP 81201244A EP 81201244 A EP81201244 A EP 81201244A EP 0056881 A1 EP0056881 A1 EP 0056881A1
Authority
EP
European Patent Office
Prior art keywords
solutions
metal surfaces
contact
brought
contain
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
Application number
EP81201244A
Other languages
German (de)
English (en)
Other versions
EP0056881B1 (fr
Inventor
Dieter Hauffe
Gerhard Müller
Werner Dr. Dipl.-Chem. Rausch
Josef Rothkegel
Gudrun Volling
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.)
GEA Group AG
Continentale Parker Ste
Continentale Parker SA
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
Priority to AT81201244T priority Critical patent/ATE17955T1/de
Publication of EP0056881A1 publication Critical patent/EP0056881A1/fr
Application granted granted Critical
Publication of EP0056881B1 publication Critical patent/EP0056881B1/fr
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C22/00Chemical 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
    • C23C22/05Chemical 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
    • C23C22/06Chemical 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
    • C23C22/07Chemical 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
    • C23C22/08Orthophosphates
    • C23C22/18Orthophosphates containing manganese cations
    • C23C22/182Orthophosphates containing manganese cations containing also zinc cations
    • C23C22/184Orthophosphates containing manganese cations containing also zinc cations containing also nickel cations
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C22/00Chemical 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
    • C23C22/05Chemical 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
    • C23C22/06Chemical 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
    • C23C22/07Chemical 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
    • C23C22/08Orthophosphates
    • C23C22/12Orthophosphates containing zinc cations
    • C23C22/14Orthophosphates containing zinc cations containing also chlorate anions
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C22/00Chemical 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
    • C23C22/05Chemical 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
    • C23C22/06Chemical 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
    • C23C22/34Chemical 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
    • C23C22/36Chemical 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
    • C23C22/362Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also phosphates containing also zinc cations

Definitions

  • the invention relates to a process for the phosphating of metals, in particular iron and steel, with aqueous acidic chlorate-containing zinc phosphate solutions at temperatures from 30 to 60 ° C. and its use for preparing the metal surfaces for electrocoating.
  • the reduced zinc content compared to the usual phosphating baths leads to improved thin and uniform phosphate coatings, which are very adhesive and durable and are particularly suitable as a basis for the subsequent electrocoating. In this process, it has proven to be very advantageous to additionally use nitrite in order to achieve the desired results.
  • DE-OS 30 04 927 discloses a process for phosphating metals which are subsequently electroplated, in which acidic aqueous zinc phosphate solutions are also used.
  • the solutions contain nitrite ions and / or aromatic nitro compounds as accelerators.
  • the phosphating is carried out in a special immersion / spray process.
  • a disadvantage of the known methods is that the nitrite which is preferably used to form nitrous gases which are known to be toxic and noxious. Suction measures are therefore essential to ensure occupational safety.
  • the object of the invention is to provide a method which does not have the disadvantages of the known methods, requires little heating energy because of the low application temperatures and is simple to carry out.
  • 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 the metal surfaces are brought into contact with solutions which contain, to which no nitrite is added and in which the weight ratio of Zn to Ni to a value between 1: (0.5 to 1.5), Z n to P 2 O 5 to a value between 1: (8 to 85) and Free P 2 O 5 to total P 2 O 5 is set to a value between (0.005 (at approx. 30 ° C) to 0.06 (at approx. 60 ° C)): 1.
  • the method according to the invention is intended in particular for the treatment of iron and steel. However, it is also suitable for the phosphating of zinc and aluminum materials as well as for steel with coatings made of zinc, zinc alloys, aluminum and aluminum alloys produced according to a wide variety of processes.
  • the treatment of the metal surfaces can be carried out in the spraying process, in the flooding process and also in the immersion process Spray-dive-spray, flood-dive and the like are applicable.
  • the contact times for the phosphating solution with the metal surface are in the usual range and can e.g. for spraying 45 seconds to 3 minutes, for diving 2 to 5 minutes and for spray diving 20 seconds spraying, 3 minutes diving.
  • the bath temperatures are 30 to 60 ° C. The lower the bath temperature, the longer i.a. the contact time.
  • nickel to the bathroom has a generally beneficial effect on the phosphating, the layer formation on heavy phosphatizable steel surfaces to which P hosphatierung of zinc surfaces and to anti-corrosive properties.
  • the ratio of free P 2 O 5 to total P205 in the bath must be kept between (0.005 to 0.06): 1 in order to produce uniformly covering phosphate layers.
  • the phosphating rate becomes slower, at the same time the quality of the phosphate layers decreases. Falling below the specified values leads to excessive precipitation of zinc phosphate sludge and is undesirable for this reason alone.
  • the low values of the ratio of free P 2 O 5 to total P 2 O 5 (acid ratio) in the range according to the invention apply to the lower bath temperatures (low ratio Zn / P 2 O 3 and low overall concentration; higher acid ratios refer to higher bath temperatures (higher Zn / P 2 O 5 ratios and higher overall concentrations). Based on these general statements about the dependence of the acid ratio, this can be determined for one. tes bath of the invention optimal acid ratio easily estimated or determined by experiment.
  • One embodiment of the invention consists in bringing the metal surfaces into contact with solution which contain 0.8 to 1.2 g / 1 Zn.
  • phosphating solutions which contain up to 0.7 g / l, in particular 0.2 to 0.5 g / 1 Mn.
  • the use of manganese has proven to be particularly beneficial in phosphating in the low temperature range.
  • Further advantageous embodiments of the invention consist in bringing the metal surfaces into contact with solutions in which the chlorate content is 1 to 3 g / l, the further accelerator up to 4 g / 1 nitrate or the additive up to 2 g / 1, preferably contain at least 0.1 g / 1, nitro compounds.
  • Na-m-nitrobenzenesulfonate has proven particularly useful as the organic aromatic nitro compound to be used.
  • Nitroresorcinol or nitrobenzoic acid can be used.
  • the layer formation can be improved by adding simple and / or complex fluorides.
  • solutions for reducing the weight of the phosphate layer for this purpose can be known compounds such as. Hydroxycarboxylic acids (e.g. tartaric acid, citric acid), polyphosphates (e.g. triplyphosphate, hexametaphosphate).
  • Hydroxycarboxylic acids e.g. tartaric acid, citric acid
  • polyphosphates e.g. triplyphosphate, hexametaphosphate.
  • the necessary acid ratio is essentially set, nar with alkali metal ions.
  • Other cations e.g. calcium, Solies, on the other hand, only exist in minor quantities.
  • the weight per unit area of the phosphate layers produced by the process according to the invention is generally in the range between 0 , 8 and 4 g / m 2 .
  • activating agents for example based on titanium phosphate, in the pre-rinse bath or in the last cleaning stage is recommended.
  • the phosphate layers produced by the method according to the invention are suitable in principle for all types of use of the phosphate layers known to date.
  • the layers bring about an unusually strong improvement in the resistance of the coating film against the infiltration of the coating in the event of corrosive stress and a significant increase in the adhesion of the coating to the metallic substrate.
  • the sheets were rinsed with water, rinsed with a rinse solution containing chromic acid and then coated with anodic and cathodic electrocoat.
  • the application tests such as salt spray test, condensation test, rockfall text and outdoor exposure, led to very good results.

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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)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Paints Or Removers (AREA)
  • Manufacture And Refinement Of Metals (AREA)
EP81201244A 1981-01-22 1981-11-03 Procédé pour la phosphatation de métaux Expired EP0056881B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81201244T ATE17955T1 (de) 1981-01-22 1981-11-03 Verfahren zur phosphatierung von metallen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813101866 DE3101866A1 (de) 1981-01-22 1981-01-22 Verfahren zur phosphatierung von metallen
DE3101866 1981-01-22

Publications (2)

Publication Number Publication Date
EP0056881A1 true EP0056881A1 (fr) 1982-08-04
EP0056881B1 EP0056881B1 (fr) 1986-02-12

Family

ID=6123050

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81201244A Expired EP0056881B1 (fr) 1981-01-22 1981-11-03 Procédé pour la phosphatation de métaux

Country Status (9)

Country Link
US (1) US4389260A (fr)
EP (1) EP0056881B1 (fr)
AT (1) ATE17955T1 (fr)
CA (1) CA1183430A (fr)
DE (2) DE3101866A1 (fr)
ES (1) ES508885A0 (fr)
GB (1) GB2093075B (fr)
IT (1) IT1190666B (fr)
PT (1) PT74310B (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2512840A1 (fr) * 1981-09-17 1983-03-18 Amchem Prod Solutions aqueuses acides pour revetements de phosphate de zinc et leurs concentres, procedes de revetement les mettant en oeuvre et solutions d'activation du metal utilisables dans ces procedes
EP0106459A1 (fr) * 1982-08-24 1984-04-25 HENKEL CORPORATION (a Delaware Corp.) Phosphatation de surfaces métalliques
EP0135622A1 (fr) * 1983-08-22 1985-04-03 Nippon Paint Co., Ltd. Phosphatation de surfaces métalliques
EP0141341A1 (fr) * 1983-10-26 1985-05-15 Metallgesellschaft Ag Procédé pour la formation de revêtements de phosphate
WO1986004931A1 (fr) * 1985-02-22 1986-08-28 Henkel Kommanditgesellschaft Auf Aktien Procede de phosphatation de surfaces metalliques
EP0219779A2 (fr) * 1985-10-18 1987-04-29 Gerhard Collardin GmbH Procédé de phosphatation de pièces métalliques zinguées électrolytiquement
EP0258922A1 (fr) * 1986-09-05 1988-03-09 Metallgesellschaft Ag Procédé pour produire des revêtements de phosphate et leur utilisation
EP0264811A1 (fr) * 1986-10-16 1988-04-27 Nihon Parkerizing Co., Ltd. Procédé d'obtention de revêtements de phosphate
WO1990012901A1 (fr) * 1989-04-21 1990-11-01 Henkel Kommanditgesellschaft Auf Aktien Procede sans chlorate ni nitrite pour produire des couches de phosphate de zinc contenant du nickel et du manganese
WO1996017977A1 (fr) * 1994-12-09 1996-06-13 Metallgesellschaft Aktiengesellschaft Procede d'application de revetements de phosphate sur des surfaces metalliques

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4673444A (en) * 1981-03-16 1987-06-16 Koichi Saito Process for phosphating metal surfaces
DE3239088A1 (de) * 1982-10-22 1984-04-26 Chemische Werke Kluthe GmbH & Co, 6900 Heidelberg Verfahren zur phosphatierung von metalloberflaechen
DE3244715A1 (de) * 1982-12-03 1984-06-07 Gerhard Collardin GmbH, 5000 Köln Verfahren zur phosphatierung von metalloberflaechen sowie hierfuer geeignete badloesungen
DE3245411A1 (de) * 1982-12-08 1984-07-05 Gerhard Collardin GmbH, 5000 Köln Verfahren zur phosphatierung elektrolytisch verzinkter metallwaren
GB8329250D0 (en) * 1983-11-02 1983-12-07 Pyrene Chemical Services Ltd Phosphating processes
US4793867A (en) * 1986-09-26 1988-12-27 Chemfil Corporation Phosphate coating composition and method of applying a zinc-nickel phosphate coating
EP0327153B1 (fr) * 1988-02-03 1993-08-04 Metallgesellschaft Ag Procédé pour former des couches de phosphates sur des métaux
DE3828888A1 (de) * 1988-08-25 1990-03-08 Ford Werke Ag Fuer die aussenseite von kraftfahrzeugkarosserieteilen bestimmtes mehrfach beschichtetes stahlblech
US5261973A (en) * 1991-07-29 1993-11-16 Henkel Corporation Zinc phosphate conversion coating and process
US5653790A (en) * 1994-11-23 1997-08-05 Ppg Industries, Inc. Zinc phosphate tungsten-containing coating compositions using accelerators
US5588989A (en) * 1994-11-23 1996-12-31 Ppg Industries, Inc. Zinc phosphate coating compositions containing oxime accelerators
WO2001076811A1 (fr) * 2000-04-07 2001-10-18 Whyco Technologies, Inc. Procede de masquage de revetements et objet resultant
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

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH567106A5 (fr) * 1971-07-06 1975-09-30 Parker Ste Continentale
DE3004927A1 (de) * 1979-02-13 1980-08-21 Nippon Paint Co Ltd Verfahren zur phosphatierung von metallen
EP0015021A1 (fr) * 1979-02-23 1980-09-03 Metallgesellschaft Ag Procédé de préparation de surfaces métalliques avant dépôt de primaire par immersion électrophorétique
EP0018841A1 (fr) * 1979-05-02 1980-11-12 Amchem Products, Inc. a Corporation organised under the Laws of the State of Delaware United States of America Composition et procédé pour revêtir de phosphate de zinc la surface d'un métal, surface revêtue d'un métal et procédé pour le vernissage de la surface enduite
EP0019430A1 (fr) * 1979-05-11 1980-11-26 Amchem Products, Inc. a Corporation organised under the Laws of the State of Delaware United States of America Composition et procédé pour revêtir la surface d'un métal de phosphate de zinc et procédé pour le vernissage de la surface revêtue

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3203835A (en) * 1962-10-25 1965-08-31 Pennsalt Chemicals Corp Chlorate accelerated zinc phosphating baths with added arsenate
US3533859A (en) * 1966-06-18 1970-10-13 Hooker Chemical Corp Coating process for ferrous metal surfaces
US3676224A (en) * 1970-10-16 1972-07-11 Lubrizol Corp Phosphating solution with scale suppressing characteristics
DE2100021A1 (de) * 1971-01-02 1972-09-07 Collardin Gmbh Gerhard Verfahren zum Aufbringen von Phos phatschichten auf Stahl, Eisen und Zinkoberflachen
SE406940B (sv) * 1974-04-13 1979-03-05 Collardin Gmbh Gerhard Forfarande for framstellning av fosfatbeleggningar med sprutningsmetoden pa jern och stal
JPS5339945A (en) * 1976-09-25 1978-04-12 Nippon Packaging Kk Surface treatment of zinc or zinc alloy

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH567106A5 (fr) * 1971-07-06 1975-09-30 Parker Ste Continentale
DE3004927A1 (de) * 1979-02-13 1980-08-21 Nippon Paint Co Ltd Verfahren zur phosphatierung von metallen
EP0015021A1 (fr) * 1979-02-23 1980-09-03 Metallgesellschaft Ag Procédé de préparation de surfaces métalliques avant dépôt de primaire par immersion électrophorétique
EP0018841A1 (fr) * 1979-05-02 1980-11-12 Amchem Products, Inc. a Corporation organised under the Laws of the State of Delaware United States of America Composition et procédé pour revêtir de phosphate de zinc la surface d'un métal, surface revêtue d'un métal et procédé pour le vernissage de la surface enduite
EP0019430A1 (fr) * 1979-05-11 1980-11-26 Amchem Products, Inc. a Corporation organised under the Laws of the State of Delaware United States of America Composition et procédé pour revêtir la surface d'un métal de phosphate de zinc et procédé pour le vernissage de la surface revêtue

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2512840A1 (fr) * 1981-09-17 1983-03-18 Amchem Prod Solutions aqueuses acides pour revetements de phosphate de zinc et leurs concentres, procedes de revetement les mettant en oeuvre et solutions d'activation du metal utilisables dans ces procedes
EP0106459A1 (fr) * 1982-08-24 1984-04-25 HENKEL CORPORATION (a Delaware Corp.) Phosphatation de surfaces métalliques
EP0135622A1 (fr) * 1983-08-22 1985-04-03 Nippon Paint Co., Ltd. Phosphatation de surfaces métalliques
EP0141341A1 (fr) * 1983-10-26 1985-05-15 Metallgesellschaft Ag Procédé pour la formation de revêtements de phosphate
US4708744A (en) * 1985-02-22 1987-11-24 Henkel Kommanditgesellschaft Auf Aktien Process for phosphating metal surfaces and especially iron surfaces
WO1986004931A1 (fr) * 1985-02-22 1986-08-28 Henkel Kommanditgesellschaft Auf Aktien Procede de phosphatation de surfaces metalliques
EP0219779A2 (fr) * 1985-10-18 1987-04-29 Gerhard Collardin GmbH Procédé de phosphatation de pièces métalliques zinguées électrolytiquement
EP0219779A3 (en) * 1985-10-18 1988-12-21 Gerhard Collardin Gmbh Phosphatizing process for electrolytically galvanized metal objects
EP0258922A1 (fr) * 1986-09-05 1988-03-09 Metallgesellschaft Ag Procédé pour produire des revêtements de phosphate et leur utilisation
EP0264811A1 (fr) * 1986-10-16 1988-04-27 Nihon Parkerizing Co., Ltd. Procédé d'obtention de revêtements de phosphate
WO1990012901A1 (fr) * 1989-04-21 1990-11-01 Henkel Kommanditgesellschaft Auf Aktien Procede sans chlorate ni nitrite pour produire des couches de phosphate de zinc contenant du nickel et du manganese
WO1996017977A1 (fr) * 1994-12-09 1996-06-13 Metallgesellschaft Aktiengesellschaft Procede d'application de revetements de phosphate sur des surfaces metalliques
US5904786A (en) * 1994-12-09 1999-05-18 Metallgesellschaft Aktiengesellschaft Method of applying phosphate coatings to metal surfaces

Also Published As

Publication number Publication date
CA1183430A (fr) 1985-03-05
US4389260A (en) 1983-06-21
GB2093075A (en) 1982-08-25
IT8219228A0 (it) 1982-01-21
PT74310A (fr) 1982-02-01
PT74310B (fr) 1983-08-08
DE3173781D1 (en) 1986-03-27
ATE17955T1 (de) 1986-02-15
GB2093075B (en) 1985-05-22
ES8305050A1 (es) 1983-04-01
ES508885A0 (es) 1983-04-01
EP0056881B1 (fr) 1986-02-12
DE3101866A1 (de) 1982-08-26
IT1190666B (it) 1988-02-24

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