GB440215A - An improved treatment for producing a modified surface on ferrous articles - Google Patents

An improved treatment for producing a modified surface on ferrous articles

Info

Publication number
GB440215A
GB440215A GB1891134A GB1891134A GB440215A GB 440215 A GB440215 A GB 440215A GB 1891134 A GB1891134 A GB 1891134A GB 1891134 A GB1891134 A GB 1891134A GB 440215 A GB440215 A GB 440215A
Authority
GB
United Kingdom
Prior art keywords
zinc
calcium
added
sulphate
producing
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
GB1891134A
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
Priority to GB1891134A priority Critical patent/GB440215A/en
Publication of GB440215A publication Critical patent/GB440215A/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
    • C23C22/22—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)

Abstract

A bath for producing a phosphate coating on ferrous articles is formed by dissolving in water one or more of the acid phosphates of calcium, strontium, and barium. One or more of the sulphates of zinc, manganese, cadmium, and iron may be added, and the amount added may be such that the bath contains a mixture of acid phosphates of calcium &c. and acid phosphates of zinc &c. Alternatively, sufficient sulphate may be added to effect a complete precipitation of the calcium &c., the bath consisting of the acid phosphate of zinc &c. with or without an excess of sulphate. An oxidizing agent such as a nitrate, nitrite, bromate, chlorate, or iodate may be added to oxidize the hydrogen evolved. Baths formed and replenished by dissolving varying amounts of calcium dihydrogen phosphate, zinc sulphate, and sodium nitrate are described. The treated articles may subsequently be painted, oiled, or lacquered.
GB1891134A 1934-06-27 1934-06-27 An improved treatment for producing a modified surface on ferrous articles Expired GB440215A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1891134A GB440215A (en) 1934-06-27 1934-06-27 An improved treatment for producing a modified surface on ferrous articles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1891134A GB440215A (en) 1934-06-27 1934-06-27 An improved treatment for producing a modified surface on ferrous articles

Publications (1)

Publication Number Publication Date
GB440215A true GB440215A (en) 1935-12-23

Family

ID=10120538

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1891134A Expired GB440215A (en) 1934-06-27 1934-06-27 An improved treatment for producing a modified surface on ferrous articles

Country Status (1)

Country Link
GB (1) GB440215A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2975082A (en) * 1957-01-22 1961-03-14 John A Henricks Method of providing ferrous articles with phosphate coatings and compositions therefor
US3090709A (en) * 1953-08-10 1963-05-21 Lubrizol Corp Phosphate coating of metals
US3141797A (en) * 1961-09-07 1964-07-21 Lubrizol Corp Phosphating process
US3161549A (en) * 1955-04-08 1964-12-15 Lubrizol Corp Solution for forming zinc phosphate coatings on metallic surfaces
US3218200A (en) * 1953-08-10 1965-11-16 Lubrizol Corp Phosphate coating of metals

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3090709A (en) * 1953-08-10 1963-05-21 Lubrizol Corp Phosphate coating of metals
US3218200A (en) * 1953-08-10 1965-11-16 Lubrizol Corp Phosphate coating of metals
US3161549A (en) * 1955-04-08 1964-12-15 Lubrizol Corp Solution for forming zinc phosphate coatings on metallic surfaces
US2975082A (en) * 1957-01-22 1961-03-14 John A Henricks Method of providing ferrous articles with phosphate coatings and compositions therefor
US3141797A (en) * 1961-09-07 1964-07-21 Lubrizol Corp Phosphating process

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