ATE9823T1 - PROCESS FOR THE PRODUCTION OF PHOSPHATE COATINGS ON IRON AND STEEL SURFACES AND THEIR APPLICATION. - Google Patents

PROCESS FOR THE PRODUCTION OF PHOSPHATE COATINGS ON IRON AND STEEL SURFACES AND THEIR APPLICATION.

Info

Publication number
ATE9823T1
ATE9823T1 AT81200830T AT81200830T ATE9823T1 AT E9823 T1 ATE9823 T1 AT E9823T1 AT 81200830 T AT81200830 T AT 81200830T AT 81200830 T AT81200830 T AT 81200830T AT E9823 T1 ATE9823 T1 AT E9823T1
Authority
AT
Austria
Prior art keywords
solution
phosphate
chlorate
oxidising
ferrous
Prior art date
Application number
AT81200830T
Other languages
German (de)
Inventor
Kevin Brown
Jon Darby
Original Assignee
Metallgesellschaft Ag
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10515046&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ATE9823(T1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Metallgesellschaft Ag filed Critical Metallgesellschaft Ag
Application granted granted Critical
Publication of ATE9823T1 publication Critical patent/ATE9823T1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
    • C23C22/36—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also phosphates
    • C23C22/362—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also phosphates containing also zinc cations
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/07—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
    • C23C22/12—Orthophosphates containing zinc cations
    • C23C22/14—Orthophosphates containing zinc cations containing also chlorate anions
    • 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
    • C23C22/22—Orthophosphates containing alkaline earth metal cations

Landscapes

  • 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)
  • Materials For Medical Uses (AREA)
  • Glass Compositions (AREA)
  • Paints Or Removers (AREA)
  • Treatment Of Sludge (AREA)

Abstract

Phosphate coatings are formed on ferrous surfaces by dipping or flooding the surfaces with an acidic zinc phosphate solution containing a high zinc content, nitrate or other oxidising agent incapable of oxidising ferrous to ferric and a low controlled amount of chlorate or other oxidising agent capable of oxidising ferrous to ferric such that the solution contains 0.05 to 1% dissolved iron. This process can be achieved but using novel replenishment and make up solutions. The initial make up solution may be free of chlorate but the replenishment solution will contain a low amount of chlorate or other suitable oxidising agent. The phosphating solution preferably has a zinc/phosphate ratio in the range 0.8-4, a Zn/Ca ratio of 1-4 and a total acid/free acid ratio of 5-9. Use of the solution gives rise to reduced sludge production. The solution may contain conventional additives such as Cu, Co, Ni, fluorides, urea. The surfaces to be treated may first be pickled, degreased then preactivated with either hot water or a titanium ortho- phosphate dispersion.
AT81200830T 1980-07-25 1981-07-21 PROCESS FOR THE PRODUCTION OF PHOSPHATE COATINGS ON IRON AND STEEL SURFACES AND THEIR APPLICATION. ATE9823T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8024465 1980-07-25
EP81200830A EP0045110B1 (en) 1980-07-25 1981-07-21 Method for the production of phosphate coatings on iron and steel surfaces, and its use

Publications (1)

Publication Number Publication Date
ATE9823T1 true ATE9823T1 (en) 1984-10-15

Family

ID=10515046

Family Applications (1)

Application Number Title Priority Date Filing Date
AT81200830T ATE9823T1 (en) 1980-07-25 1981-07-21 PROCESS FOR THE PRODUCTION OF PHOSPHATE COATINGS ON IRON AND STEEL SURFACES AND THEIR APPLICATION.

Country Status (8)

Country Link
EP (1) EP0045110B1 (en)
JP (1) JPS5751266A (en)
AT (1) ATE9823T1 (en)
DE (1) DE3166602D1 (en)
ES (1) ES8300874A1 (en)
GB (1) GB2080835B (en)
IT (1) IT1167480B (en)
PT (1) PT73426B (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3244715A1 (en) * 1982-12-03 1984-06-07 Gerhard Collardin GmbH, 5000 Köln METHOD FOR PHOSPHATING METAL SURFACES, AND BATH SOLUTIONS SUITABLE FOR THIS
JPS6081850A (en) * 1983-10-11 1985-05-09 Nec Kansai Ltd Manufacture of semiconductor device
DE3407513A1 (en) * 1984-03-01 1985-09-05 Gerhard Collardin GmbH, 5000 Köln METHOD FOR ZINC-CALCIUM PHOSPHATION OF METAL SURFACES AT LOW TREATMENT TEMPERATURE
DE3636390A1 (en) * 1986-10-25 1988-04-28 Metallgesellschaft Ag METHOD FOR PRODUCING PHOSPHATE COATINGS ON METALS
JPS63270478A (en) * 1986-12-09 1988-11-08 Nippon Denso Co Ltd Phosphating method
US5236565A (en) * 1987-04-11 1993-08-17 Metallgesellschaft Aktiengesellschaft Process of phosphating before electroimmersion painting
DE3712339A1 (en) * 1987-04-11 1988-10-20 Metallgesellschaft Ag METHOD FOR PHOSPHATIZING BEFORE ELECTROPLATING
JPH01108754A (en) * 1987-10-21 1989-04-26 Toshiba Corp Lead frame for semiconductor device
DE3742634A1 (en) * 1987-12-16 1989-06-29 Collardin Gmbh Gerhard METHOD FOR THE COLLIGHTING OF PHOSPHATING BAEDERS AND DEVICE FOR THIS METHOD
DE3800835A1 (en) * 1988-01-14 1989-07-27 Henkel Kgaa METHOD FOR PHOSPHATING METAL SURFACES
ES2058464T3 (en) * 1988-02-03 1994-11-01 Metallgesellschaft Ag PROCEDURE FOR THE GENERATION OF PHOSPHATE COATING ON METALS.
JPH02101174A (en) * 1988-10-06 1990-04-12 Nippon Paint Co Ltd Treatment with zinc phosphate for cold working
DE3840668A1 (en) * 1988-12-02 1990-06-07 Metallgesellschaft Ag METHOD FOR PHOSPHATING METAL SURFACES
JPH0375379A (en) * 1989-05-15 1991-03-29 Nippon Paint Co Ltd Coated product, production thereof, concentrated phosphating agent and concentrated treating agent for replenishment
DE4306446A1 (en) * 1993-03-02 1994-09-08 Metallgesellschaft Ag Procedures to facilitate cold forming
DE19634685A1 (en) * 1996-08-28 1998-03-05 Metallgesellschaft Ag Aqueous solution and process for phosphating metallic surfaces
US5954892A (en) * 1998-03-02 1999-09-21 Bulk Chemicals, Inc. Method and composition for producing zinc phosphate coatings on metal surfaces
ES2309349T3 (en) 2002-07-10 2008-12-16 Chemetall Gmbh PROCEDURE TO COVER METAL SURFACES.
DE10320313B4 (en) * 2003-05-06 2005-08-11 Chemetall Gmbh A method of coating metallic bodies with a phosphating solution, phosphating solution and the use of the coated article
CN101665936B (en) * 2009-09-27 2012-11-28 大连三达奥克化学股份有限公司 Normal-temperature phosphating agent for pre-processing before spray-coating of steel plate workpiece and preparation method thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5241735B2 (en) * 1972-04-27 1977-10-20
DE2540684A1 (en) * 1975-09-12 1977-03-17 Metallgesellschaft Ag PROCESS FOR PRODUCING PHOSPHATE COATINGS ON METAL SURFACES
DE2540685C2 (en) * 1975-09-12 1985-06-27 Metallgesellschaft Ag, 6000 Frankfurt Process for the production of phosphate coatings

Also Published As

Publication number Publication date
IT1167480B (en) 1987-05-13
DE3166602D1 (en) 1984-11-15
ES504609A0 (en) 1982-11-16
ES8300874A1 (en) 1982-11-16
JPS5751266A (en) 1982-03-26
GB2080835B (en) 1984-08-30
EP0045110A1 (en) 1982-02-03
GB2080835A (en) 1982-02-10
IT8123121A0 (en) 1981-07-24
PT73426B (en) 1982-08-09
PT73426A (en) 1981-08-01
EP0045110B1 (en) 1984-10-10

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Legal Events

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REN Ceased due to non-payment of the annual fee