EP0180523A1 - Verfahren zur Beschichtung mit Zinkphosphaten, Aktivierungs- und Schichtverfeinerungsbad für dieses Verfahren und Konzentrat dafür - Google Patents

Verfahren zur Beschichtung mit Zinkphosphaten, Aktivierungs- und Schichtverfeinerungsbad für dieses Verfahren und Konzentrat dafür Download PDF

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Publication number
EP0180523A1
EP0180523A1 EP85402096A EP85402096A EP0180523A1 EP 0180523 A1 EP0180523 A1 EP 0180523A1 EP 85402096 A EP85402096 A EP 85402096A EP 85402096 A EP85402096 A EP 85402096A EP 0180523 A1 EP0180523 A1 EP 0180523A1
Authority
EP
European Patent Office
Prior art keywords
acid
bath
activation
ppm
refining
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
EP85402096A
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English (en)
French (fr)
Other versions
EP0180523B1 (de
Inventor
Joseph Schapira
Victor Ken
Denis Thery
Stéphane Jelodin
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.)
CFPI S.A.
Original Assignee
Compagnie Francaise de Produits Industriels SA
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Publication date
Application filed by Compagnie Francaise de Produits Industriels SA filed Critical Compagnie Francaise de Produits Industriels SA
Priority to AT85402096T priority Critical patent/ATE44051T1/de
Publication of EP0180523A1 publication Critical patent/EP0180523A1/de
Application granted granted Critical
Publication of EP0180523B1 publication Critical patent/EP0180523B1/de
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
    • C23C22/78Pretreatment of the material to be coated
    • C23C22/80Pretreatment of the material to be coated with solutions containing titanium or zirconium compounds

Definitions

  • step (3) can be omitted, the activating constituents then being introduced directly into the bath used for the step of alkaline degreasing.
  • step (3) becomes essential in order to obtain a sufficiently fine and dense phosphating.
  • the baths intended for carrying out the zinc phosphating step can comprise, in addition to the zinc cation, other metals such as nickel, manganese, calcium or possibly iron, as widely described in the scientific literature.
  • the refining agents used at the time of the activation and refining step or which can be used at the time of the alkaline degreasing step in the case of processes carried out entirely by jet are constituted by compounds of titanium, in particular colloidal titanium salts known under the name of Jernstedt salts; these salts are described in particular in US Patent 2,456,947.
  • Such a Jernstedt salt can be obtained by mixing 95 parts of disodium phosphate with 5 parts of potassium fluotitanate in an amount of water sufficient to dissolve the ingredients. The water is then removed from the mixture by evaporation at a temperature of 80 to 100 ° C.
  • titanium can be used for the production of Jernstedt salt, such as for example titanium sulfate or titanium oxide.
  • polyphosphates containing Jernstedt salts in particular in a proportion of 1 to 300 parts by weight of P207.
  • Jernstedt salts are commonly found on the market and are in particular marketed by the Applicant Company under the trademark "FIXODINE 5".
  • the object of the invention is, above all, to remedy these drawbacks and to ensure that, in the phosphating methods of the genus in question, the activation and refining step can be carried out with industrial water without overflow and supply of refining salts proportional to the quantities of water added while providing a refining and stability effect comparable to that obtained with demineralized water.
  • R representing an alkyl radical or an aryl radical optionally substituted with at least one of the substituents of the group comprising the hydroxyl radical, other phosphonic groups and the amino groups of formula in which R 2 and R 3 which may be identical or different from each other, each represent a hydrogen atom or have the meaning of R 1 .
  • the salts of these acids which can be used are those obtained by partial or total neutralization with alkaline ions such as Na and K or with the NH 4 ion.
  • a bath which comprises, in addition to the conventional constituents including in particular at least one Jernstedt salt in a proportion corresponding to approximately 1 to 100 ppm of titanium, a proportion of 10 to 700 ppm, preferably of 50 to 200 ppm, of at least one alkane-phosphonic acid of formula (I) or one of its salts, the pH of the bath being from 7 to 9.5, preferably from 7.5 to 9.
  • This bath is also targeted as a new industrial product.
  • constituents of the refining bath used in accordance with the invention may be pyrophosphates or alkali citrates.
  • the activation and refining step according to the invention is carried out at a temperature of 20 to 50 ° C.
  • the stability of the bath used is sufficient for it to be able to operate under normal conditions without regeneration, that is to say without the addition of additional amounts of concentrate other than the normal amounts to be provided by consumption of the product, for approximately 5 15 days.
  • the aim is to study the influence of different activation baths on the morphology of the zinc phosphate crystals deposited in the phosphating step.
  • This morphology is examined using an electronic scanning micro-scape at a magnification of 1500.
  • Two examinations are carried out, the first of which is carried out after treatment in a new bath, 10 minutes after its assembly, and the second of which is carried out after treatment in the same bath, 6 days after the assembly thereof.
  • the activation bath comprises 2 g / l of Jermstedt salt (FIXODINE 5) in demineralized water corresponding to 20 ppm of titanium.
  • FIXODINE 5 Jermstedt salt
  • the other ingredients are sodium phosphates.
  • the pH is 7.
  • Example 2 Same composition and same pH as in Example 1, but the water consists of tap water.
  • the pH 7.9.
  • the bath is identical to that of Example 3, except that the phosphonic acid is present at the rate of 100 ppm.
  • the bath is identical to that of Example 4, but the pH is brought to 9 with trisodium phosphate.
  • the bath is identical to that of Example 6 except that the sodium salt of phosphonic acid is present at the rate of 200 ppm.
  • the bath is identical to that of Example 7, except that the phosphonic acid is present at the rate of 100 ppm and the pH is then 7.
  • test pieces thus treated are examined under the electron microscope, as indicated above.

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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)
  • Detergent Compositions (AREA)
  • Manufacture And Refinement Of Metals (AREA)
EP85402096A 1984-10-31 1985-10-30 Verfahren zur Beschichtung mit Zinkphosphaten, Aktivierungs- und Schichtverfeinerungsbad für dieses Verfahren und Konzentrat dafür Expired EP0180523B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85402096T ATE44051T1 (de) 1984-10-31 1985-10-30 Verfahren zur beschichtung mit zinkphosphaten, aktivierungs- und schichtverfeinerungsbad fuer dieses verfahren und konzentrat dafuer.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8416725 1984-10-31
FR8416725A FR2572422B1 (fr) 1984-10-31 1984-10-31 Bain d'activation et d'affinage perfectionne pour procede de phosphatation au zinc et concentre correspondant

Publications (2)

Publication Number Publication Date
EP0180523A1 true EP0180523A1 (de) 1986-05-07
EP0180523B1 EP0180523B1 (de) 1989-06-14

Family

ID=9309205

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85402096A Expired EP0180523B1 (de) 1984-10-31 1985-10-30 Verfahren zur Beschichtung mit Zinkphosphaten, Aktivierungs- und Schichtverfeinerungsbad für dieses Verfahren und Konzentrat dafür

Country Status (7)

Country Link
US (1) US4678519A (de)
EP (1) EP0180523B1 (de)
JP (1) JPS61124582A (de)
AT (1) ATE44051T1 (de)
CA (1) CA1260809A (de)
DE (1) DE3571050D1 (de)
FR (1) FR2572422B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0340530A1 (de) * 1988-04-28 1989-11-08 Henkel Kommanditgesellschaft auf Aktien Titanfreie Aktivierungsmittel, Verfahren zu ihrer Herstellung und ihre Verwendung zur Aktivierung von Metalloberflächen vor einer Zinkphosphatierung
EP0339452A3 (de) * 1988-04-28 1991-06-12 Henkel Kommanditgesellschaft auf Aktien Polymere Titanphosphate, Verfahren zu ihrer Herstellung und ihre Verwendung zur Aktivierung von Metalloberflächen vor einer Zinkphosphatierung
FR2686622A1 (fr) * 1992-01-29 1993-07-30 Francais Prod Ind Cfpi Concentre pour bain d'activation et d'affinage et bain obtenu a partir de ce concentre.
EP0707664A4 (de) * 1993-06-15 1996-02-09 Henkel Corp Auflösungs- und konservierungsstabile aktivierungszusammensetzung mit titanphosphat
WO1996008588A1 (en) * 1994-09-12 1996-03-21 Ppg Industries, Inc. Liquid rinse conditioner for phosphate conversion coatings

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5238506A (en) * 1986-09-26 1993-08-24 Chemfil Corporation Phosphate coating composition and method of applying a zinc-nickel-manganese phosphate coating
US4793867A (en) * 1986-09-26 1988-12-27 Chemfil Corporation Phosphate coating composition and method of applying a zinc-nickel phosphate coating
DE3823716C2 (de) * 1987-07-14 2001-09-27 Astaris Llc St Louis Verfahren zur Herstellung von Zusammensetzungen zur Behandlung von Metallen
US5003986A (en) * 1988-11-17 1991-04-02 Kenneth D. Pool, Jr. Hierarchial analysis for processing brain stem signals to define a prominent wave
US4917737A (en) * 1989-03-13 1990-04-17 Betz Laboratories, Inc. Sealing composition and method for iron and zinc phosphating process
DE4131950A1 (de) * 1991-09-25 1993-04-01 Boehme Chem Fab Kg Produkte als flussmittel und umschmelzfluessigkeiten bei der herstellung von leiterplatten
US5628838A (en) * 1992-01-29 1997-05-13 C.F.P.I Societe Anonyme Concentrate for activating and defining bath and bath obtained from this concentrate
US20050268991A1 (en) * 2004-06-03 2005-12-08 Enthone Inc. Corrosion resistance enhancement of tin surfaces
CN111534815A (zh) * 2020-05-22 2020-08-14 山东大学 可在金属表面形成可水洗本色转化膜的前处理液及其制备方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3864139A (en) * 1970-12-04 1975-02-04 Amchem Prod Pretreatment compositions and use thereof in treating metal surfaces
EP0031103A1 (de) * 1979-12-21 1981-07-01 Gerhard Collardin GmbH Verfahren zur Vorbehandlung von Metalloberflächen vor dem Phosphatieren
EP0091627A2 (de) * 1982-04-14 1983-10-19 Gerhard Collardin GmbH Verfahren zum Reinigen und Entfetten sowie Aktivieren von Metalloberflächen
DE3217145A1 (de) * 1982-05-07 1983-11-10 Gerhard Collardin GmbH, 5000 Köln Verfahren zum reinigen, entfetten sowie aktivieren von metalloberflaechen

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4427459A (en) * 1982-01-25 1984-01-24 Pennwalt Corporation Phosphate conversion coatings for metals with reduced coating weights and crystal sizes
US4497667A (en) * 1983-07-11 1985-02-05 Amchem Products, Inc. Pretreatment compositions for metals

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3864139A (en) * 1970-12-04 1975-02-04 Amchem Prod Pretreatment compositions and use thereof in treating metal surfaces
EP0031103A1 (de) * 1979-12-21 1981-07-01 Gerhard Collardin GmbH Verfahren zur Vorbehandlung von Metalloberflächen vor dem Phosphatieren
EP0091627A2 (de) * 1982-04-14 1983-10-19 Gerhard Collardin GmbH Verfahren zum Reinigen und Entfetten sowie Aktivieren von Metalloberflächen
DE3217145A1 (de) * 1982-05-07 1983-11-10 Gerhard Collardin GmbH, 5000 Köln Verfahren zum reinigen, entfetten sowie aktivieren von metalloberflaechen

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0340530A1 (de) * 1988-04-28 1989-11-08 Henkel Kommanditgesellschaft auf Aktien Titanfreie Aktivierungsmittel, Verfahren zu ihrer Herstellung und ihre Verwendung zur Aktivierung von Metalloberflächen vor einer Zinkphosphatierung
EP0339452A3 (de) * 1988-04-28 1991-06-12 Henkel Kommanditgesellschaft auf Aktien Polymere Titanphosphate, Verfahren zu ihrer Herstellung und ihre Verwendung zur Aktivierung von Metalloberflächen vor einer Zinkphosphatierung
FR2686622A1 (fr) * 1992-01-29 1993-07-30 Francais Prod Ind Cfpi Concentre pour bain d'activation et d'affinage et bain obtenu a partir de ce concentre.
EP0554179A1 (de) * 1992-01-29 1993-08-04 C F P I Konzentrat für Aktivierungs- und Verfeinerungsbad und ein Bad hergestellt aus dem Konzentrat
EP0707664A4 (de) * 1993-06-15 1996-02-09 Henkel Corp Auflösungs- und konservierungsstabile aktivierungszusammensetzung mit titanphosphat
WO1996008588A1 (en) * 1994-09-12 1996-03-21 Ppg Industries, Inc. Liquid rinse conditioner for phosphate conversion coatings

Also Published As

Publication number Publication date
DE3571050D1 (en) 1989-07-20
US4678519A (en) 1987-07-07
EP0180523B1 (de) 1989-06-14
ATE44051T1 (de) 1989-06-15
JPS61124582A (ja) 1986-06-12
CA1260809A (en) 1989-09-26
JPH0568552B2 (de) 1993-09-29
FR2572422B1 (fr) 1993-03-05
FR2572422A1 (fr) 1986-05-02

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