GB631686A - Improvements in or relating to the protection of magnesium and magnesium base alloysagainst corrosion - Google Patents

Improvements in or relating to the protection of magnesium and magnesium base alloysagainst corrosion

Info

Publication number
GB631686A
GB631686A GB9101/47A GB910147A GB631686A GB 631686 A GB631686 A GB 631686A GB 9101/47 A GB9101/47 A GB 9101/47A GB 910147 A GB910147 A GB 910147A GB 631686 A GB631686 A GB 631686A
Authority
GB
United Kingdom
Prior art keywords
magnesium
corrosion
litre
alloysagainst
relating
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
GB9101/47A
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
Priority to GB9101/47A priority Critical patent/GB631686A/en
Priority to US18716A priority patent/US2509273A/en
Priority to FR964050D priority patent/FR964050A/en
Publication of GB631686A publication Critical patent/GB631686A/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

Abstract

Magnesium and its alloys, particularly those containing zirconium as described in Specification 511,137, are given a corrosion-resistant surface by treatment in an aqueous solution containing chromic acid ions, magnesium sulphate and manganous sulphate and having a pH of from 3 to 6. The chromic acid ions are preferably provided by potassium and/or sodium bichromate, preferred solutions containing 50-150 gm./litre of bicromate, 30-70 gm./litre of Mg. So4. 7H2O and 30-70 gm./litre of Mn. So4. 4H2O. The solutions may be used at room temperature or at any temperature up to and including boiling point. Specifications 510,353 and 558,983, also are referred to.
GB9101/47A 1947-04-03 1947-04-03 Improvements in or relating to the protection of magnesium and magnesium base alloysagainst corrosion Expired GB631686A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB9101/47A GB631686A (en) 1947-04-03 1947-04-03 Improvements in or relating to the protection of magnesium and magnesium base alloysagainst corrosion
US18716A US2509273A (en) 1947-04-03 1948-04-02 Protection of magnesium and magnesium base alloys against corrosion
FR964050D FR964050A (en) 1947-04-03 1948-04-03 SURFACE TREATMENT PROCESS OF MAGNESIUM AND MAGNESIUM ALLOYS AGAINST CORROSION

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9101/47A GB631686A (en) 1947-04-03 1947-04-03 Improvements in or relating to the protection of magnesium and magnesium base alloysagainst corrosion
GB2509273X 1947-04-03

Publications (1)

Publication Number Publication Date
GB631686A true GB631686A (en) 1949-11-08

Family

ID=61187886

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9101/47A Expired GB631686A (en) 1947-04-03 1947-04-03 Improvements in or relating to the protection of magnesium and magnesium base alloysagainst corrosion

Country Status (3)

Country Link
US (1) US2509273A (en)
FR (1) FR964050A (en)
GB (1) GB631686A (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1747776A (en) * 1929-04-19 1930-02-18 Firm Dr Otto Sprenger Patentve Production of dark oxidic coatings on magnesium and magnesium alloys
US2224528A (en) * 1937-12-23 1940-12-10 Sutton Hubert Protection of magnesium and magnesium alloys
US2288552A (en) * 1939-02-23 1942-06-30 Siebel Gustav Method of surface treating objects of cast magnesium base alloys
GB557910A (en) * 1942-04-02 1943-12-10 Magnesium Elektron Ltd Improvements in or relating to processes for the production of magnesium and magnesium base alloys against corrosion

Also Published As

Publication number Publication date
US2509273A (en) 1950-05-30
FR964050A (en) 1950-08-01

Similar Documents

Publication Publication Date Title
GB736145A (en) Method of improving corrosion resistance of zinc
GB850576A (en) Improvements in or relating to the electrolytic treatment of aluminium
GB602879A (en) Processes and compositions for the electrodeposition of indium alone or with other metals
GB972362A (en) Methods for preparing a rutile titanium-dioxide pigment
GB662800A (en) Improvements in or relating to the preparation of salts of cyclohexylsulphamic acid
GB631686A (en) Improvements in or relating to the protection of magnesium and magnesium base alloysagainst corrosion
GB614671A (en) Improvements in or relating to the formation of oxide coatings on aluminium surfaces
JPS53144559A (en) Color protection of beta-naphthol
GB858517A (en) Improvements in or relating to the welding of tubular members
SE329236B (en)
GB643877A (en) Improved surface treatment of magnesium alloys
GB633653A (en) Improvements in or relating to the protection of magnesium and magnesium base alloys against corrosion
JPS5618933A (en) Dihydroxy aluminum salt of substituted acetic acid and its preparation
GB601736A (en) Improvements in and relating to the production of protective coatings on aluminium-alloy surfaces
GB870397A (en) Improvements relating to methods of preparing solutions, particularly for waterproofing
GB638374A (en) Improvements in or relating to the treatment of aluminium oxide coatings
GB584097A (en) Improvements in or relating to processes for the protection of magnesium and magnesium base alloys against corrosion
GB383112A (en) Process for the production of aluminium derivatives of acetyl-salicy lic acid
GB414110A (en) Improvements in or relating to the manufacture of barium fluosilicate and its application
GB595738A (en) Process for the preparation of 2-amino-4-methyl-pyrimidine
GB548033A (en) Process for the after-treatment of oxidised aluminium and alloys thereof
GB645750A (en) Improvements in and relating to the purification of polymyxin
GB1001704A (en) Process for the production of water soluble derivatives of ªÐ-amino-salicylic acid
GB654435A (en) Improvements relating to the electrolytic treatment of metallic surfaces
GB610150A (en) Algaecide composition