GB530006A - Improvements in or relating to improving the resistance of metals to corrosion - Google Patents

Improvements in or relating to improving the resistance of metals to corrosion

Info

Publication number
GB530006A
GB530006A GB16492/39A GB1649239A GB530006A GB 530006 A GB530006 A GB 530006A GB 16492/39 A GB16492/39 A GB 16492/39A GB 1649239 A GB1649239 A GB 1649239A GB 530006 A GB530006 A GB 530006A
Authority
GB
United Kingdom
Prior art keywords
metal
radical
phosphate
hexavalent chromium
acid
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
GB16492/39A
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.)
Pyrene Co Ltd
Original Assignee
Pyrene Co Ltd
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 Pyrene Co Ltd filed Critical Pyrene Co Ltd
Publication of GB530006A publication Critical patent/GB530006A/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
    • C23C22/24—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 hexavalent chromium compounds
    • C23C22/33—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 hexavalent chromium compounds containing also 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)

Abstract

530,006. Coating surfaces. PYRENE CO., Ltd. June 5, 1939, No. 16492. Convention date, June 8, 1938. [Class 82 (ii)] A process for improving the resistance of a metal surface to corrosion and rendering it more suitable for the application of paints, lacquers and similar finishes, comprises forming on the metal surface, which may already have thereon a phosphate, oxalate, oxide or similar coating, a film of an aqueous acidic solution, containing a phosphate radical, an acid radical containing hexavalent chromium and a radical of a metal which has a valency of two or more and which does not reduce the hexavalent chromium in the solution, and drying the film on the metal surface. The phosphate employed is preferably an orthophosphate, though meta-, pyro-, or hypophosphates may be used. The hexavalent chromium compound may be chromic acid or a chromate or dichromate. The metal radical may be zinc, manganese, chromium, aluminium, magnesium, cadmium, calcium or nickel, and may be introduced as chromate or dichromate together with orthophosphoric acid or as a di-hydrogen phosphate together with chromic acid and with orthophosphoric in addition if desired. A wetting agent may also be added to the solution such as sulphonation products of the higher alcohols or alkyl sulphates such as the substance known as Duponol W.A. Paste. The surface treated may be of any metal, including iron, steel, zinc, cadmium, magnesium, tin, lead, nickel, aluminium, copper, and alloys of these metals.
GB16492/39A 1938-06-08 1939-06-05 Improvements in or relating to improving the resistance of metals to corrosion Expired GB530006A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US218087XA 1938-06-08 1938-06-08

Publications (1)

Publication Number Publication Date
GB530006A true GB530006A (en) 1940-12-03

Family

ID=21806270

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16492/39A Expired GB530006A (en) 1938-06-08 1939-06-05 Improvements in or relating to improving the resistance of metals to corrosion

Country Status (6)

Country Link
BE (1) BE434749A (en)
CH (1) CH218087A (en)
DE (1) DE718157C (en)
FR (1) FR855924A (en)
GB (1) GB530006A (en)
NL (1) NL54075C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE971056C (en) * 1949-10-18 1958-12-04 Boleslaw Kaspras Process for converting layers of rust on steel into protective layers
DE974713C (en) * 1941-04-25 1961-04-06 Metallgesellschaft Ag Process for the production of coatings on metals
US3192075A (en) * 1962-09-10 1965-06-29 Marsh Steel & Aluminum Co Phosphate treatment composition for iron and steel products
CN116640563A (en) * 2023-05-24 2023-08-25 西南石油大学 High-temperature corrosion-inhibition phosphate completion fluid

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE974196C (en) * 1942-12-11 1960-10-13 Metallgesellschaft Ag Process for the production of smooth phosphate coatings on metallic objects
US2445155A (en) * 1944-10-03 1948-07-13 American Chem Paint Co Protection of cupriferous surfaces
US2548419A (en) * 1945-08-23 1951-04-10 Poor & Co Method for production of lustrous zinc
DE975313C (en) * 1947-09-08 1961-11-02 Metallgesellschaft Ag Process for the production of smooth phosphate coatings on metallic objects
DE972000C (en) * 1953-01-24 1959-05-06 Vacuumschmelze Ag Process for producing an electrically insulating and heat-resistant layer on metals and metal alloys
CA581081A (en) * 1953-07-30 1959-08-11 K. Schuster Ludwig Corrosion resistant coated steel members and method of making
FR1133904A (en) * 1954-06-04 1957-04-03 Walterisation Company Ltd Improvements in the surface treatment of metals
US2859147A (en) * 1954-08-27 1958-11-04 Poor & Co Process of and compositions for producing coated aluminum and aluminum alloys

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE974713C (en) * 1941-04-25 1961-04-06 Metallgesellschaft Ag Process for the production of coatings on metals
DE971056C (en) * 1949-10-18 1958-12-04 Boleslaw Kaspras Process for converting layers of rust on steel into protective layers
US3192075A (en) * 1962-09-10 1965-06-29 Marsh Steel & Aluminum Co Phosphate treatment composition for iron and steel products
CN116640563A (en) * 2023-05-24 2023-08-25 西南石油大学 High-temperature corrosion-inhibition phosphate completion fluid

Also Published As

Publication number Publication date
BE434749A (en)
CH218087A (en) 1941-11-30
FR855924A (en) 1940-05-23
DE718157C (en) 1942-03-04
NL54075C (en)

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