GB905853A - Improvements in or relating to solutions and processes for the production of phosphate coatings on metal surfaces - Google Patents

Improvements in or relating to solutions and processes for the production of phosphate coatings on metal surfaces

Info

Publication number
GB905853A
GB905853A GB691060A GB691060A GB905853A GB 905853 A GB905853 A GB 905853A GB 691060 A GB691060 A GB 691060A GB 691060 A GB691060 A GB 691060A GB 905853 A GB905853 A GB 905853A
Authority
GB
United Kingdom
Prior art keywords
solution
phosphates
peroxide
phosphate
coating metal
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
GB691060A
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.)
Gerhard Collardin GmbH
Original Assignee
Gerhard Collardin GmbH
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 Gerhard Collardin GmbH filed Critical Gerhard Collardin GmbH
Publication of GB905853A publication Critical patent/GB905853A/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
    • C23C22/23—Condensed phosphates

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)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

An aqueous solution for producing phosphate coatings on metal surfaces (particularly iron and steel) contains one or more coating metal phosphates, one or more "dehydrated" phosphates and a peroxide accelerator. "Dehydrated" phosphates are defined as those salts of phosphorus-containing acids which have a lower water content than those derived from H3PO4 and in which there is no direct P-P linkage. The solution preferably contains 1-15 g./l. coating metal (e.g. zinc), at least 0.01 g./l. dehydrated phosphate (e.g. alkali metal or ammonium pyro-, hexameta-, tripoly- and tetrapoly-phosphates), and peroxide (calculated as H2O2) in a concentration of 1/30 th- 1/8 th of the concentration of coating metal. The peroxide may be introduced into the solution as hydrogen peroxide, or hydrogen peroxide may be generated in the solution by introducing percompounds (such as perphosphates, perborates and ammonium persulphate) together with an amount of acid to maintain constancy of pH value. The solution is preferably supersaturated in respect of coating metal phosphate and possesses a pH value (stabilized by buffers such as sodium and/or zinc acetate) which exceeds that of equilibrium. The phosphate coatings may be treated in chromic acid solution.
GB691060A 1959-02-27 1960-02-26 Improvements in or relating to solutions and processes for the production of phosphate coatings on metal surfaces Expired GB905853A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC18497A DE1095081B (en) 1959-02-27 1959-02-27 Solutions and processes for phosphating metals

Publications (1)

Publication Number Publication Date
GB905853A true GB905853A (en) 1962-09-12

Family

ID=7016448

Family Applications (1)

Application Number Title Priority Date Filing Date
GB691060A Expired GB905853A (en) 1959-02-27 1960-02-26 Improvements in or relating to solutions and processes for the production of phosphate coatings on metal surfaces

Country Status (3)

Country Link
DE (1) DE1095081B (en)
FR (1) FR1249138A (en)
GB (1) GB905853A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997020964A1 (en) * 1995-12-06 1997-06-12 Henkel Corporation Composition and process for zinc phosphate conversion coating
US6231688B1 (en) * 1995-12-06 2001-05-15 Henkel Corporation Composition and process for zinc phosphate conversion coating

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2342558C3 (en) * 1973-08-23 1982-11-11 Metallgesellschaft Ag, 6000 Frankfurt Process for phosphating metals
DE2327304C3 (en) * 1973-05-29 1982-01-21 Metallgesellschaft Ag, 6000 Frankfurt Process for applying phosphate coatings to metals

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997020964A1 (en) * 1995-12-06 1997-06-12 Henkel Corporation Composition and process for zinc phosphate conversion coating
US6231688B1 (en) * 1995-12-06 2001-05-15 Henkel Corporation Composition and process for zinc phosphate conversion coating

Also Published As

Publication number Publication date
FR1249138A (en) 1960-12-23
DE1095081B (en) 1960-12-15

Similar Documents

Publication Publication Date Title
GB1135552A (en) Process for the preparation of white iron phosphate
ES358443A1 (en) Metal treating process
GB905853A (en) Improvements in or relating to solutions and processes for the production of phosphate coatings on metal surfaces
ES443032A1 (en) Process of stabilization of anhydrous dibasic calcium phosphate against fluorine ions with azacycloalkane-2,2-diphosphonic acids
GB1063007A (en) A process for etching printed circuits
GB891390A (en) Phosphate coating of metal surfaces
EP0056675A3 (en) Pretreatment composition for phosphatising ferrous metals, and method of preparing the same
GB905008A (en) Improvements in or relating to solutions and processes for the production of phosphate coatings on metal surfaces
US2493579A (en) Solution for anodic polishing of steel and iron articles
GB1164203A (en) Treatment of Acetic Acid Solutions
GB903151A (en) Improvements in or relating to solutions and processes for the production of phosphate coatings on metal surfaces
GB1248037A (en) Calcium sulphate
GB1421073A (en) Stabilising methionine
NO161320C (en) Aqueous SOLUTION OF AN AMINOMethylene Phosphonic Acid AND PROCEDURE FOR STABILIZING Aqueous SOLUTIONS OF SUCH PHOSPHONIC ACIDS.
ES8506243A1 (en) Process and plant for producing ammonium nitrate.
GB599784A (en) Improvements in or relating to processes for the production of protective coatings on metal surfaces
GB935509A (en) Method of preparing nucleotides
GB799429A (en) Manufacture of alkali metal phosphates
GB811733A (en) Improvements in or relating to the manufacture of hydrogen peroxide
GB1188069A (en) A process for the production of Stable Polyoxymethylene Copolymers
GB823369A (en) Improvements in or relating to the surface treatment of metals
GB812095A (en) Improvements relating to the formation of phosphate coatings
GB946054A (en) Process for applying oxylate coatings to round wires of iron or low-alloy steel
GB1125230A (en) Improvements in or relating to the production of chemical conversion coatings upon aluminium surfaces
GB870572A (en) Improvements in or relating to solutions and processes for the production of corrosion resistant coatings on metals