GB1128369A - Improvements in or relating to protective coatings - Google Patents

Improvements in or relating to protective coatings

Info

Publication number
GB1128369A
GB1128369A GB54319/65A GB5431965A GB1128369A GB 1128369 A GB1128369 A GB 1128369A GB 54319/65 A GB54319/65 A GB 54319/65A GB 5431965 A GB5431965 A GB 5431965A GB 1128369 A GB1128369 A GB 1128369A
Authority
GB
United Kingdom
Prior art keywords
acid
soluble
solution
phosphate
tungstate
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
GB54319/65A
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.)
Allied Res Products Inc
Original Assignee
Allied Res Products Inc
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 Allied Res Products Inc filed Critical Allied Res Products Inc
Publication of GB1128369A publication Critical patent/GB1128369A/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
    • C23C22/40—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 molybdates, tungstates or vanadates
    • C23C22/44—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 molybdates, tungstates or vanadates containing also fluorides or complex fluorides

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

1,128,369. Conversion coatings on aluminium. ALLIED RESEARCH PRODUCTS Inc. Dec.22, 1965 [Dec.29, 1964], No.54319/65. Heading C7U. Aluminium and its alloys are coated by treatment with an aqueous solution containing hexanalent chromium, a fluo compound, a soluble tungstate or a phosphate and said phosphate calculated as P 2 O 5 is present in a weight ratio of from 1:10 to 1:150 to said tungstate calculated as WO 3 . The solution may also contain ferricyanic acid, ferrocyanic acid and their soluble salts and the pH is adjusted by the addition of nitric acid to 0.5 to 3.0. The solution may be formed from chromic acid or a soluble salt thereof, hydrofluoric acid, fluoboric acid, fluosilicic acid or their soluble salts, phosphoric acid or a soluble phosphate, arsenic pentoxide or a soluble salt of arsenic acid and sodium or potassium tungstate. The concentration of the ingredients in solution is 0‹5 - 50 g/l CrO 3 , 0À05 - 5 g/l hydrofluoric acid or 0.075 - 8 g/l fluosilicic acid or 3À3 - 33 g/l fluoboric acid, 0.35 - 7 g/l WO 3 . The temperature of the solution is 60‹ - 120‹ F. and the treatment time 5 seconds to 15 minutes.
GB54319/65A 1964-12-29 1965-12-22 Improvements in or relating to protective coatings Expired GB1128369A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US422041A US3410707A (en) 1964-12-29 1964-12-29 Protective coatings for aluminum and aluminum alloys

Publications (1)

Publication Number Publication Date
GB1128369A true GB1128369A (en) 1968-09-25

Family

ID=23673143

Family Applications (1)

Application Number Title Priority Date Filing Date
GB54319/65A Expired GB1128369A (en) 1964-12-29 1965-12-22 Improvements in or relating to protective coatings

Country Status (4)

Country Link
US (1) US3410707A (en)
DE (1) DE1521672A1 (en)
GB (1) GB1128369A (en)
NL (2) NL6516677A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995021278A1 (en) * 1994-02-03 1995-08-10 Henkel Kommanditgesellschaft Auf Aktien Chromating process or phosphate-chromating process and materials suitable for identifying the treatment process

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3477882A (en) * 1965-12-13 1969-11-11 Lubrizol Corp Method of and composition for preventing "white rust" formation
US3494839A (en) * 1967-01-23 1970-02-10 Amchem Prod Method of sealing chromic acid anodized aluminum surfaces
US4676842A (en) * 1986-04-04 1987-06-30 Robert Haydu Protective coating for metals
GB8828559D0 (en) * 1988-12-07 1989-01-11 Novamax Tech Corp Composition & method for coating metal surfaces
US5219617A (en) * 1989-09-19 1993-06-15 Michigan Chrome And Chemical Company Corrosion resistant coated articles and process for making same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA513376A (en) * 1955-05-31 American Chemical Paint Company Method of and composition for coating aluminum
US2796371A (en) * 1955-03-16 1957-06-18 Allied Res Products Inc Corrosion resistant protective coating on aluminum and aluminum alloys
US2868679A (en) * 1955-12-05 1959-01-13 Turco Products Inc Process and compositions for producing aluminum surface conversion coatings
US2936254A (en) * 1959-01-02 1960-05-10 Amchem Prod Coating baths for aluminum and method of and materials for preparing and replenishing same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995021278A1 (en) * 1994-02-03 1995-08-10 Henkel Kommanditgesellschaft Auf Aktien Chromating process or phosphate-chromating process and materials suitable for identifying the treatment process

Also Published As

Publication number Publication date
NL6516677A (en) 1966-06-30
NL128122C (en)
DE1521672A1 (en) 1970-02-05
US3410707A (en) 1968-11-12

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