ES425741A2 - Phosphating of metals - Google Patents

Phosphating of metals

Info

Publication number
ES425741A2
ES425741A2 ES425741A ES425741A ES425741A2 ES 425741 A2 ES425741 A2 ES 425741A2 ES 425741 A ES425741 A ES 425741A ES 425741 A ES425741 A ES 425741A ES 425741 A2 ES425741 A2 ES 425741A2
Authority
ES
Spain
Prior art keywords
phosphate
chlorate
regeneration
nitrate
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
Application number
ES425741A
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 ES425741A2 publication Critical patent/ES425741A2/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
    • C23C22/14—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
    • C23C22/34—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

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

Improvements introduced in the object of the main patent No. 406,822, filed on September 19, 1972, by: Procedure to develop phosphate solutions of partially depleted metal surfaces, characterized in that the proportions of zinc, chlorate and nitrate with respect to to phosphate, they are as follows: P2O5 = 1; Zn = 0.2 to 0.7; ClO3 = 0.2 to 0.7 and NO3 = 0.1 to 0.4; the ratio of the total acid points to the free acid points being between 5 and 25, and the concentration of phosphate (calculated in P2O5) being between 3 and 25 g/liter, and why the treatment solution It is regenerated during the operation by adding a regeneration mixture containing at least part of the chlorate and the neutralizing agent and an aqueous acidic regeneration solution containing the other ingredients necessary for the latter, the acidic solution containing zinc, phosphate and nitrate in the following proportions: P2O5 = 1; Zn = 0.2 to 0.7 and NO3 is more than 0.08 to 0.3, the total regeneration in chlorate being from 0.01 to 0.25 (P2O5 = 1). (Machine-translation by Google Translate, not legally binding)
ES425741A 1973-04-27 1974-04-27 Phosphating of metals Expired ES425741A2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2020573A GB1376310A (en) 1973-04-27 1973-04-27 Phosphating of metals

Publications (1)

Publication Number Publication Date
ES425741A2 true ES425741A2 (en) 1977-07-01

Family

ID=10142177

Family Applications (1)

Application Number Title Priority Date Filing Date
ES425741A Expired ES425741A2 (en) 1973-04-27 1974-04-27 Phosphating of metals

Country Status (4)

Country Link
BE (1) BE811895R (en)
ES (1) ES425741A2 (en)
FR (1) FR2227349B2 (en)
GB (1) GB1376310A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU507110B2 (en) * 1975-04-23 1980-02-07 Ici Ltd. Phosphating process
DE3245411A1 (en) * 1982-12-08 1984-07-05 Gerhard Collardin GmbH, 5000 Köln METHOD FOR PHOSPHATING ELECTROLYTICALLY GALVANIZED METAL GOODS

Also Published As

Publication number Publication date
GB1376310A (en) 1974-12-04
FR2227349B2 (en) 1976-09-24
BE811895R (en) 1974-07-01
FR2227349A2 (en) 1974-11-22

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