GB515648A - Improvements in or relating to a method of producing coatings on magnesium or its alloys - Google Patents

Improvements in or relating to a method of producing coatings on magnesium or its alloys

Info

Publication number
GB515648A
GB515648A GB18652/38A GB1865238A GB515648A GB 515648 A GB515648 A GB 515648A GB 18652/38 A GB18652/38 A GB 18652/38A GB 1865238 A GB1865238 A GB 1865238A GB 515648 A GB515648 A GB 515648A
Authority
GB
United Kingdom
Prior art keywords
magnesium
treatment
solution
coatings
alloys
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
GB18652/38A
Inventor
Dr-Ing Walter Mannchen
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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
Priority to DEI59181A priority Critical patent/DE671978C/en
Application filed by IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to GB18652/38A priority patent/GB515648A/en
Priority to FR841524D priority patent/FR841524A/en
Priority to DEI62211A priority patent/DE679798C/en
Priority to BE430129A priority patent/BE430129A/en
Priority to CH209863D priority patent/CH209863A/en
Publication of GB515648A publication Critical patent/GB515648A/en
Expired 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
    • C25D11/38—Chromatising

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)

Abstract

515,648. Electrolyte surface, treatment of magnesium. MAGNESIUM ELEKTRON, Ltd. (I. G. FARBENINDUSTRIE AKT.- GES.). June 23, 1938, No. 18652. [Class 41] Magnesium and magnesium base alloys are provided with a protective coating by treatment as the negative electrode of a galvanic cell the positive electrode of which, preferably of steel is directly connected to it by a conductor. The electrolyte preferably consists of a solution of a chromate, dichromate or chromic acid together with a smaller proportion of a phosphate permanganate, borate, cyanate, sulphate, sulphite, selenate, selenite, tungstate, vanadate or molybdate, the latter salts preferably being of an alkali metal, magnesium or manganese. The pH value should be 3.7-7, preferable values being 4.5-6 for hard dense coatings and 3.8-3.9 for soft, porous coatings. The coated articles may be afterwards immersed in a 5 per cent. solution of water-glass at 70-80‹ C.
GB18652/38A 1937-10-01 1938-06-23 Improvements in or relating to a method of producing coatings on magnesium or its alloys Expired GB515648A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DEI59181A DE671978C (en) 1937-10-01 1937-10-01 Process for the electrolytic production of protective coatings on workpieces made of magnesium and its alloys
GB18652/38A GB515648A (en) 1937-10-01 1938-06-23 Improvements in or relating to a method of producing coatings on magnesium or its alloys
FR841524D FR841524A (en) 1937-10-01 1938-08-01 Process for obtaining by electrolytic deposition of protective layers on magnesium and its alloys
DEI62211A DE679798C (en) 1937-10-01 1938-08-13 Process for the electrolytic production of protective layers on workpieces
BE430129A BE430129A (en) 1937-10-01 1938-09-12 Process for obtaining by electrolytic deposition of protective layers on magnesium and its alloys
CH209863D CH209863A (en) 1937-10-01 1938-09-20 Process for the electrolytic production of protective coatings on workpieces made of magnesium and its alloys.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEI59181A DE671978C (en) 1937-10-01 1937-10-01 Process for the electrolytic production of protective coatings on workpieces made of magnesium and its alloys
GB18652/38A GB515648A (en) 1937-10-01 1938-06-23 Improvements in or relating to a method of producing coatings on magnesium or its alloys

Publications (1)

Publication Number Publication Date
GB515648A true GB515648A (en) 1939-12-11

Family

ID=25760474

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18652/38A Expired GB515648A (en) 1937-10-01 1938-06-23 Improvements in or relating to a method of producing coatings on magnesium or its alloys

Country Status (5)

Country Link
BE (1) BE430129A (en)
CH (1) CH209863A (en)
DE (2) DE671978C (en)
FR (1) FR841524A (en)
GB (1) GB515648A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2553449A (en) * 1939-01-31 1951-05-15 Freud Herbert Manfred Process for obtaining by galvanic means a coating for protecting magnesium from corrosion
US2965551A (en) * 1956-08-08 1960-12-20 Pechiney Prod Chimiques Sa Metal plating process
CN114686868A (en) * 2022-03-31 2022-07-01 东莞理工学院 Chromium-free and phosphorus-free conversion solution and preparation method and application thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2553449A (en) * 1939-01-31 1951-05-15 Freud Herbert Manfred Process for obtaining by galvanic means a coating for protecting magnesium from corrosion
US2965551A (en) * 1956-08-08 1960-12-20 Pechiney Prod Chimiques Sa Metal plating process
CN114686868A (en) * 2022-03-31 2022-07-01 东莞理工学院 Chromium-free and phosphorus-free conversion solution and preparation method and application thereof
CN114686868B (en) * 2022-03-31 2024-05-24 东莞理工学院 Chromium-free and phosphorus-free conversion liquid and preparation method and application thereof

Also Published As

Publication number Publication date
DE671978C (en) 1939-02-17
CH209863A (en) 1940-05-15
BE430129A (en) 1938-10-31
DE679798C (en) 1939-08-15
FR841524A (en) 1939-05-22

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