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ES417921A1 - Phosphate coatings on iron and steel - Google Patents

Phosphate coatings on iron and steel

Info

Publication number
ES417921A1
ES417921A1 ES417921A ES417921A ES417921A1 ES 417921 A1 ES417921 A1 ES 417921A1 ES 417921 A ES417921 A ES 417921A ES 417921 A ES417921 A ES 417921A ES 417921 A1 ES417921 A1 ES 417921A1
Authority
ES
Spain
Prior art keywords
weight
phosphate
total
free
bath
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
Application number
ES417921A
Other languages
Spanish (es)
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.)
Continentale Parker SA
Original Assignee
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 Continentale Parker SA filed Critical Continentale Parker SA
Publication of ES417921A1 publication Critical patent/ES417921A1/en
Expired legal-status Critical Current

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
    • C23C22/07—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
    • C23C22/13—Orthophosphates containing zinc cations containing also nitrate or nitrite anions

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)

Abstract

Procedure for preparing phosphate coatings on iron and steel, with the help of an acidic solution of zinc phosphate accelerated by a nitrate, at a temperature of 80 to 98ºC and by immersion, characterized in that a bath prepared with the help of a acidic aqueous concentrate containing zinc, phosphate and nitrate ions and in which the relative proportions by weight of P2O5/NO3 are 1: (0.5 to 2.0) and the weight ratios of free P2O5/total P2O5 are (0, 40 to 0.75): 1 and is extracted from the bath with the aid of an acidic aqueous concentrate containing zinc, phosphate and nitrate ions and in which the relative proportions by weight of P2O5/NO3 are 1: (0.6 to 1, 5) and the relative proportions by weight of free P2O5/total P2O5 are (0.45 to 0.75): 1 with the additional conditions that, in both the preparation concentrate and the extraction concentrate, the sum of the contents in P2O5, Zn and NO3 is greater than 47% by weight and that, in the bath that has begun to function tion, a total acidity of 20 to 100 points and a weight ratio of free P2O5/total P2O5 of 0.35 to 0.6 are maintained. (Machine-translation by Google Translate, not legally binding)
ES417921A 1972-08-16 1973-08-16 Phosphate coatings on iron and steel Expired ES417921A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722240049 DE2240049B2 (en) 1972-08-16 1972-08-16 PROCESS FOR THE PRODUCTION OF PHOSPHATE COATINGS ON IRON AND STEEL AND CONCENTRATES FOR THE PRODUCTION AND ADDITION OF THE PHOSPHATIZING SOLUTION USED IN THIS SITE

Publications (1)

Publication Number Publication Date
ES417921A1 true ES417921A1 (en) 1976-03-16

Family

ID=5853587

Family Applications (1)

Application Number Title Priority Date Filing Date
ES417921A Expired ES417921A1 (en) 1972-08-16 1973-08-16 Phosphate coatings on iron and steel

Country Status (10)

Country Link
AT (1) AT321054B (en)
BE (1) BE799692A (en)
BR (1) BR7305895D0 (en)
DE (1) DE2240049B2 (en)
ES (1) ES417921A1 (en)
FR (1) FR2196397B1 (en)
GB (1) GB1383285A (en)
IT (1) IT992935B (en)
NL (1) NL171600C (en)
SE (1) SE387666B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3939014A (en) * 1974-11-20 1976-02-17 Amchem Products, Inc. Aqueous zinc phosphating solution and method of rapid coating of steel for deforming
DE2540685C2 (en) * 1975-09-12 1985-06-27 Metallgesellschaft Ag, 6000 Frankfurt Process for the production of phosphate coatings
DE3712339A1 (en) * 1987-04-11 1988-10-20 Metallgesellschaft Ag METHOD FOR PHOSPHATIZING BEFORE ELECTROPLATING

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2048665A1 (en) * 1970-10-03 1972-04-06 Metallgesellschaft Ag Phosphating of steel using a preliminary coat using concentrated solu

Also Published As

Publication number Publication date
FR2196397B1 (en) 1975-12-26
SE387666B (en) 1976-09-13
IT992935B (en) 1975-09-30
DE2240049B2 (en) 1977-05-12
NL171600B (en) 1982-11-16
NL7309853A (en) 1974-02-19
NL171600C (en) 1983-04-18
BR7305895D0 (en) 1974-05-16
DE2240049A1 (en) 1974-02-28
AT321054B (en) 1975-03-10
GB1383285A (en) 1974-02-12
BE799692A (en) 1973-09-17
FR2196397A1 (en) 1974-03-15

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