GB571307A - Improvements relating to protective treatment for metal surfaces - Google Patents

Improvements relating to protective treatment for metal surfaces

Info

Publication number
GB571307A
GB571307A GB1850443A GB1850443A GB571307A GB 571307 A GB571307 A GB 571307A GB 1850443 A GB1850443 A GB 1850443A GB 1850443 A GB1850443 A GB 1850443A GB 571307 A GB571307 A GB 571307A
Authority
GB
United Kingdom
Prior art keywords
coating
bichromate
metal surfaces
solution
hydroxide
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
GB1850443A
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.)
BUTTONS Ltd
GERTRUDE MEALINGS
Original Assignee
BUTTONS Ltd
GERTRUDE MEALINGS
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 BUTTONS Ltd, GERTRUDE MEALINGS filed Critical BUTTONS Ltd
Priority to GB1850443A priority Critical patent/GB571307A/en
Publication of GB571307A publication Critical patent/GB571307A/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
    • C23C22/60—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 alkaline aqueous solutions with pH greater than 8

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

571,307. Coating metals. BUTTONS, Ltd., CHECKLEY, A., and MEALINGS, G. Nov. 8, 1943, No. 18504. [Class 82 (ii)] Metal surfaces are given a protective coating by immersing them in a solution of potassium bichromate and a hydroxide, preferably sodium hydroxide, at a temperature of 180‹-380‹ F. Usually 1 lb. of bichromate is added to 2 pints of water and then 1 lb. of sodium hydroxide, and the solution brought to the boil before use. Alternatively, up to 4 parts of hydroxide to 1 part of bichromate may be used. To produce a darker shade in the coating, 4-8 ounces of potassium carbonate per gallon of solution may be added to the bath. The coated articles may be given a further coating of oil, wax or lacquer.
GB1850443A 1943-11-08 1943-11-08 Improvements relating to protective treatment for metal surfaces Expired GB571307A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1850443A GB571307A (en) 1943-11-08 1943-11-08 Improvements relating to protective treatment for metal surfaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1850443A GB571307A (en) 1943-11-08 1943-11-08 Improvements relating to protective treatment for metal surfaces

Publications (1)

Publication Number Publication Date
GB571307A true GB571307A (en) 1945-08-20

Family

ID=10113561

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1850443A Expired GB571307A (en) 1943-11-08 1943-11-08 Improvements relating to protective treatment for metal surfaces

Country Status (1)

Country Link
GB (1) GB571307A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1091402B (en) * 1956-05-18 1960-10-20 Philips Patentverwaltung Process for the chemical production of dielectric oxide layers on electrodes made of aluminum

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1091402B (en) * 1956-05-18 1960-10-20 Philips Patentverwaltung Process for the chemical production of dielectric oxide layers on electrodes made of aluminum

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