GB524290A - Process of producing protective coatings on magnesium and magnesium-base alloys - Google Patents

Process of producing protective coatings on magnesium and magnesium-base alloys

Info

Publication number
GB524290A
GB524290A GB2659/39A GB265939A GB524290A GB 524290 A GB524290 A GB 524290A GB 2659/39 A GB2659/39 A GB 2659/39A GB 265939 A GB265939 A GB 265939A GB 524290 A GB524290 A GB 524290A
Authority
GB
United Kingdom
Prior art keywords
magnesium
bath
contain
work piece
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
GB2659/39A
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.)
Magnesium Elektron Ltd
Original Assignee
Magnesium Elektron 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 Magnesium Elektron Ltd filed Critical Magnesium Elektron Ltd
Publication of GB524290A publication Critical patent/GB524290A/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
    • 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
    • C23C22/48—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 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
    • C23C22/57—Treatment of magnesium or alloys based thereon

Abstract

524,290. Protecting magnesium and alloys. MAGNESIUM ELEKTRON, Ltd. Jan. 25, 1939. No. 2659. Convention date, Feb. 2, 1938. [Class 93] [Also in Groups II and XXXVI] In the production of dark protective layers on magnesium and magnesium-base alloys by dipping in aqueous solutions of alkali metal salts (including ammonium salts) of those metallic oxy-acids which contain in the acid radicle metals of the group comprising vanadium, molybdenum, tungsten, niobium, tantalum and uranium, such solutions have a pH value lying between about 4 and about 7 and contain no intentional additions of dihydrogen phosphate. The temperature of the solution may be between 20‹C. and boiling point, preferably between 40 and 60‹C. and the layers may be compacted, as by impregnation with linseed oil, and subjected to after-treatment with organic solutions capable of precipitating metals such as tannic acid, 8- oxyquinoline, anthranilic acid or cupferron. Deposition may be promoted by applying a voltage, the work piece forming the cathode and graphite &c. the anode, or the work piece may be short-circuited externally of the bath with a coacting electrode of nobler material disposed in the bath.
GB2659/39A 1938-02-02 1939-01-25 Process of producing protective coatings on magnesium and magnesium-base alloys Expired GB524290A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE524290X 1938-02-02

Publications (1)

Publication Number Publication Date
GB524290A true GB524290A (en) 1940-08-02

Family

ID=6552233

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2659/39A Expired GB524290A (en) 1938-02-02 1939-01-25 Process of producing protective coatings on magnesium and magnesium-base alloys

Country Status (1)

Country Link
GB (1) GB524290A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1483429A1 (en) * 2002-02-14 2004-12-08 MacDermid, Incorporated Magnesium conversion coating composition and method of using same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1483429A1 (en) * 2002-02-14 2004-12-08 MacDermid, Incorporated Magnesium conversion coating composition and method of using same
EP1483429A4 (en) * 2002-02-14 2005-04-20 Macdermid Inc Magnesium conversion coating composition and method of using same

Similar Documents

Publication Publication Date Title
GB524290A (en) Process of producing protective coatings on magnesium and magnesium-base alloys
GB239977A (en) Improvements relating to the electro deposition of metals
ES345431A1 (en) Method of manufacturing aluminum electrode foil for electrolytic capacitors
ES469421A1 (en) Metal extraction
GB522177A (en) Improvements relating to removing scale from metal
US2322205A (en) Method of treating magnesium and its alloys
DE716974C (en) Secondary emitting layer for impact electrodes and process for their production
US1535339A (en) Process for electrolytically depositing elemental chromium upon metals
GB591225A (en) Improvements in or relating to the production of magnesium base alloys
GB1396455A (en) Method of forming a carbide layer
DE635261C (en) Process for the production of a corrosion-resistant coating on objects made of zinc alloys
DE709458C (en) Process for the production of resistant and corrosion-preventing surface layers on iron
GB508723A (en) Process for the production of protective layers on aluminium or aluminium alloys and magnesium or magnesium alloys
DE516745C (en) Acid-resistant coating for rotating bodies on centrifuges
DE707722C (en) Process for the production of dark colored protective coatings on magnesium and magnesium alloys
DE896229C (en) Heavy-duty anode for electrical discharge vessels, especially those without artificial cooling
DE471209C (en) Production of copper with high density and conductivity
DE466462C (en) Process for the production of glow cathodes
GB397453A (en) Electrolytic process for protecting metals
DE827566C (en) Process for the production of multilayer bearings
GB580710A (en) Improvements in or relating to the production of powdered metals
GB489106A (en) Improvements in and relating to spinning bobbins and spinning cans for use in the production of artificial silk
DE671314C (en) Process for the production of fluorine-containing layers on light metals and their alloys
GB759222A (en) An electrolytic process for smoothing and polishing surfaces of gold alloys
DE837904C (en) Process for making photoelectric electrodes