US2138023A - Method of treating anodic coatings on magnesium and its alloys - Google Patents

Method of treating anodic coatings on magnesium and its alloys Download PDF

Info

Publication number
US2138023A
US2138023A US49758A US4975835A US2138023A US 2138023 A US2138023 A US 2138023A US 49758 A US49758 A US 49758A US 4975835 A US4975835 A US 4975835A US 2138023 A US2138023 A US 2138023A
Authority
US
United States
Prior art keywords
alloys
magnesium
treating
anodic coatings
metal
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 - Lifetime
Application number
US49758A
Inventor
Robert W Buzzard
James H Wilson
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 US49758A priority Critical patent/US2138023A/en
Application granted granted Critical
Publication of US2138023A publication Critical patent/US2138023A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/30—Anodisation of magnesium or alloys based thereon

Definitions

  • the coated article may then-be subjected to 19 one of the various contemplated modes of carrying out the present invention. It may, for example, be heated in an oven or furnace at some temperature above 100 C., the upper limit of temperature being safely below the. fusion point of the metal ll and the duration of the heating dependent upon the temperature used. In general, the lower the temperature the longer should be the period of heating.
  • This invention may be manufactured or used by or for the Government of the United States of America for governmental purposes without the payment of any royalty thereon or therefor.
  • a method of treating an anodically formed film on magnesium and its alloys which comprises heating the coated metal at a temperature above 100 C. and lower than the fusion point of the metal in a hydrocarbon.
  • a process of treating an anodically formed film of magnesium and its alloys which comprises applying paraflln to said film and removing a substantial portion of the paraflin by heating the coated metal to a temperature above 100 C. and 20 lower than the fusion temperature of the metal.
  • a method of treating an anodically formed film on magnesium and its alloys which comprises applying a combustible hydrocarbon to the film on said metal and igniting the hydrocarbon.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)
  • Chemically Coating (AREA)

Description

Patented Nov. 29, 1938- UNITED STATES PATENT OFFICE METHOD OF TREATING ANODIO COATINGS 0N MAGNESIUM AND ITS ALLOYS Robert W. Buzzard, Kensington, Md., and James H. Wilson, Washington, D. G.
No Drawing. Application November 14, 1935, Serial No. 49,758
3 Claims.
The coated article may then-be subjected to 19 one of the various contemplated modes of carrying out the present invention. It may, for example, be heated in an oven or furnace at some temperature above 100 C., the upper limit of temperature being safely below the. fusion point of the metal ll and the duration of the heating dependent upon the temperature used. In general, the lower the temperature the longer should be the period of heating.
Another way of realizing the benefits of our in- 20 ventionis to dip the anodically coated article in melted paraflin or in some other combustible organic substance that will adhere to the article and then heating as above described, or the organic substance may be ignited and allowed to 25 burn 011. 'Still another method is to heat the coated article in an open flame or in the presence of a gaseous hydrocarbon.
All of these methods produce similar results. The treatment makes the .film less soluble and usually lightens the color thereof, the greater color changes being eflected when heat is applied in the presence of a hydrocarbon.
This invention may be manufactured or used by or for the Government of the United States of America for governmental purposes without the payment of any royalty thereon or therefor.
We claim:
1. A method of treating an anodically formed film on magnesium and its alloys, which comprises heating the coated metal at a temperature above 100 C. and lower than the fusion point of the metal in a hydrocarbon.
2. A process of treating an anodically formed film of magnesium and its alloys, which comprises applying paraflln to said film and removing a substantial portion of the paraflin by heating the coated metal to a temperature above 100 C. and 20 lower than the fusion temperature of the metal.
3. A method of treating an anodically formed film on magnesium and its alloys, which comprises applying a combustible hydrocarbon to the film on said metal and igniting the hydrocarbon.
ROBERT W. BUZZARD. JAMES H. WILSON.
US49758A 1935-11-14 1935-11-14 Method of treating anodic coatings on magnesium and its alloys Expired - Lifetime US2138023A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US49758A US2138023A (en) 1935-11-14 1935-11-14 Method of treating anodic coatings on magnesium and its alloys

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US49758A US2138023A (en) 1935-11-14 1935-11-14 Method of treating anodic coatings on magnesium and its alloys

Publications (1)

Publication Number Publication Date
US2138023A true US2138023A (en) 1938-11-29

Family

ID=21961554

Family Applications (1)

Application Number Title Priority Date Filing Date
US49758A Expired - Lifetime US2138023A (en) 1935-11-14 1935-11-14 Method of treating anodic coatings on magnesium and its alloys

Country Status (1)

Country Link
US (1) US2138023A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2463483A (en) * 1939-01-31 1949-03-01 Frasch Jean Protection of metallic objects by galvanic action
US2465443A (en) * 1945-08-03 1949-03-29 Gide Rene Treatment of magnesium and magnesium alloy articles to increase their resistance to corrosion
US3074828A (en) * 1960-02-01 1963-01-22 Mcdonnell Aircraft Corp Exothermic heated metal for heat treating and forming

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2463483A (en) * 1939-01-31 1949-03-01 Frasch Jean Protection of metallic objects by galvanic action
US2465443A (en) * 1945-08-03 1949-03-29 Gide Rene Treatment of magnesium and magnesium alloy articles to increase their resistance to corrosion
US3074828A (en) * 1960-02-01 1963-01-22 Mcdonnell Aircraft Corp Exothermic heated metal for heat treating and forming

Similar Documents

Publication Publication Date Title
US2138023A (en) Method of treating anodic coatings on magnesium and its alloys
US1381085A (en) Coating metals
US2418088A (en) Heat-treatment of electroplated strip metal
NO924815L (en) PROCEDURE FOR SURFACE TREATMENT OF AN OBJECTS
US2680085A (en) Method of maintaining dimensional tolerances in partially enameled metal objects
US1416865A (en) Method or process of removing enamel from enameled metal articles
GB584445A (en) Improvements in or relating to the varnishing of articles such as armatures
US1456274A (en) Process of rendering metal nonoxidizable and the metal
GB428855A (en) Improvements in or relating to protective coatings for preventing the oxidation of heated metal
GB463511A (en) An improved process for coating pure and alloyed light metals with a firmly adhering protection against corrosion
US3677829A (en) Process for the bluing of steel surfaces
US2321917A (en) Method of annealing
US2787692A (en) Method of heating magnesium alloy billets
US1726652A (en) Process of making protected metal
US3074828A (en) Exothermic heated metal for heat treating and forming
US2481424A (en) Method of producing black oxide coated steel sheets
US322290A (en) Process of making enameled goods
GB297161A (en) Process for sulphur-proofing metallic conductors for cables and the like
RU2717426C1 (en) Method of applying decorative enamel coating with stereoscopic effect
SU840198A1 (en) Method of enamel annealing
US1939521A (en) Centrifugal process of lining tubes with a bituminous or like material
US2166173A (en) Method of drawing metals
US1960895A (en) Process for preparing metal articles
US1485151A (en) Furnace
SU56373A2 (en) The method of nitriding products