GB794294A - Process for the production of oxalate coatings on ferrous metals - Google Patents

Process for the production of oxalate coatings on ferrous metals

Info

Publication number
GB794294A
GB794294A GB10177/56A GB1017756A GB794294A GB 794294 A GB794294 A GB 794294A GB 10177/56 A GB10177/56 A GB 10177/56A GB 1017756 A GB1017756 A GB 1017756A GB 794294 A GB794294 A GB 794294A
Authority
GB
United Kingdom
Prior art keywords
oxalate
production
ferrous
ferrous metals
coatings
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
GB10177/56A
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.)
Montedison SpA
Original Assignee
Montedison SpA
Montecatini Societa Generale per lIndustria Mineraria e Chimica SpA
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 Montedison SpA, Montecatini Societa Generale per lIndustria Mineraria e Chimica SpA filed Critical Montedison SpA
Publication of GB794294A publication Critical patent/GB794294A/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
    • C23C22/46—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 oxalates

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)
  • Chemically Coating (AREA)

Abstract

Oxalate coatings are formed on ferrous surfaces by dipping in, or spraying with, an oxalic acid solution containing 0.2-4.0 g/l. sodium nitrite. The sodium nitrite concentration is maintained within the range by continuous addition of an aqueous solution thereof. An initial addition of ferrous oxalate may be made to the coating solution so as to provide 0.1-1 g/l. of ferrous ions. Specific examples are given of the coating of mild steel sheets.
GB10177/56A 1955-04-08 1956-04-03 Process for the production of oxalate coatings on ferrous metals Expired GB794294A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT794294X 1955-04-08

Publications (1)

Publication Number Publication Date
GB794294A true GB794294A (en) 1958-04-30

Family

ID=11316744

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10177/56A Expired GB794294A (en) 1955-04-08 1956-04-03 Process for the production of oxalate coatings on ferrous metals

Country Status (5)

Country Link
US (1) US2863791A (en)
BE (1) BE546812A (en)
FR (1) FR1145046A (en)
GB (1) GB794294A (en)
LU (1) LU34298A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU39302A1 (en) * 1959-10-19

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2273234A (en) * 1933-03-27 1942-02-17 Parker Rust Proof Co Method of and solution for producing a coated iron article
US2148331A (en) * 1937-02-25 1939-02-21 Alrose Chemical Company Method and composition for coating iron and steel articles

Also Published As

Publication number Publication date
BE546812A (en)
FR1145046A (en) 1957-10-21
LU34298A1 (en)
US2863791A (en) 1958-12-09

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