GB963540A - Process of improving the resistance of metals and metal objects to corrosion, and phophating solution suited for carrying out such process - Google Patents

Process of improving the resistance of metals and metal objects to corrosion, and phophating solution suited for carrying out such process

Info

Publication number
GB963540A
GB963540A GB25566/60A GB2556660A GB963540A GB 963540 A GB963540 A GB 963540A GB 25566/60 A GB25566/60 A GB 25566/60A GB 2556660 A GB2556660 A GB 2556660A GB 963540 A GB963540 A GB 963540A
Authority
GB
United Kingdom
Prior art keywords
phosphoric acid
acid
zinc
free
treatment
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
GB25566/60A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB963540A publication Critical patent/GB963540A/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
    • C23C22/18—Orthophosphates containing manganese 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
    • C23C22/13—Orthophosphates containing zinc cations containing also nitrate or nitrite 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
    • C23C22/86—Regeneration of coating baths

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

Ferrous objects are descaled and phosphated by treatment at 50-100 DEG C. with a solution containing, with the limitation that more free than combined phosphoric acid is present, 2-7% by weight total phosphoric acid, 0.5-2% by weight zinc or manganese phosphate and 0.2-2% accelerator, followed by drying the objects immediately after this treatment or after a further treatment in a phosphating solution containing from an equal amount, to up to 50% more, free phosphoric acid than combined phosphoric acid, at a temperature below 200 DEG C., without prior rinsing. The second solution may contain, by weight, 0.4-3% free phosphoric acid, 0.4-3% zinc or manganese phosphate, and 0.1-2% accelerator. Preferred accelerators are nitric acid, zinc and manganese nitrate, zinc chlorate, para-formaldehyde, hydroxylamine, nitromethane, chloroacetic acid, and the methyl and ethyl esters of chloroacetic acid. If other accelerators are used (e.g. alkali metal nitrites, chromates, bichromates, or chromic acid) the coating should be rinsed after drying and then dried a second time: rinsing may be effected with water optionally containing chromic acid with or without phosphoric acid. The solutions may contain complex-formers, e.g. ammonium or alkali metal metaphosphates and pyrophosphates, polyphosphates and oxalates. They may be regenerated by adding oxidizing agents to reduce their iron content. Oscillations may be applied to the baths. Concentrates for making up the solutions are disclosed.
GB25566/60A 1959-07-25 1960-07-22 Process of improving the resistance of metals and metal objects to corrosion, and phophating solution suited for carrying out such process Expired GB963540A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT547459A AT233914B (en) 1959-07-25 1959-07-25 Process for improving the corrosion resistance of iron, steel and iron alloys by applying a phosphate layer

Publications (1)

Publication Number Publication Date
GB963540A true GB963540A (en) 1964-07-08

Family

ID=3576190

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25566/60A Expired GB963540A (en) 1959-07-25 1960-07-22 Process of improving the resistance of metals and metal objects to corrosion, and phophating solution suited for carrying out such process

Country Status (3)

Country Link
AT (1) AT233914B (en)
ES (1) ES259854A1 (en)
GB (1) GB963540A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3009931A1 (en) * 1979-03-16 1980-09-25 Parker Italiana MEANS AND METHOD FOR PROTECTING STEEL SURFACES
EP0186823A2 (en) * 1984-12-20 1986-07-09 HENKEL CORPORATION (a Delaware corp.) Process for facilitating cold-forming
EP0261597A2 (en) * 1986-09-26 1988-03-30 Ppg Industries, Inc. Method of applying a zinc-nickel phosphate coating
EP0315059A1 (en) * 1987-10-30 1989-05-10 HENKEL CORPORATION (a Delaware corp.) Process and composition for zinc phosphate coating
AU624433B2 (en) * 1986-09-26 1992-06-11 Ppg Industries Ohio, Inc. Concentrated coating compositions
US5234509A (en) * 1984-12-20 1993-08-10 Henkel Corporation Cold deformation process employing improved lubrication coating
US5238506A (en) * 1986-09-26 1993-08-24 Chemfil Corporation Phosphate coating composition and method of applying a zinc-nickel-manganese phosphate coating

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3009931A1 (en) * 1979-03-16 1980-09-25 Parker Italiana MEANS AND METHOD FOR PROTECTING STEEL SURFACES
EP0186823A2 (en) * 1984-12-20 1986-07-09 HENKEL CORPORATION (a Delaware corp.) Process for facilitating cold-forming
EP0186823A3 (en) * 1984-12-20 1988-04-27 Parker Chemical Company Process for facilitating cold-forming
US5234509A (en) * 1984-12-20 1993-08-10 Henkel Corporation Cold deformation process employing improved lubrication coating
EP0261597A2 (en) * 1986-09-26 1988-03-30 Ppg Industries, Inc. Method of applying a zinc-nickel phosphate coating
EP0261597A3 (en) * 1986-09-26 1988-07-13 Chemfil Corporation Phosphate coating composition and method of applying a zinc-nickel phosphate coating
AU624433B2 (en) * 1986-09-26 1992-06-11 Ppg Industries Ohio, Inc. Concentrated coating compositions
US5238506A (en) * 1986-09-26 1993-08-24 Chemfil Corporation Phosphate coating composition and method of applying a zinc-nickel-manganese phosphate coating
EP0315059A1 (en) * 1987-10-30 1989-05-10 HENKEL CORPORATION (a Delaware corp.) Process and composition for zinc phosphate coating
US4865653A (en) * 1987-10-30 1989-09-12 Henkel Corporation Zinc phosphate coating process

Also Published As

Publication number Publication date
ES259854A1 (en) 1961-03-01
AT233914B (en) 1964-06-10

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