GB371213A - Improvements in or relating to the production of corrosionresisting coatings on aluminium or aluminium alloys - Google Patents

Improvements in or relating to the production of corrosionresisting coatings on aluminium or aluminium alloys

Info

Publication number
GB371213A
GB371213A GB18313/31A GB1831331A GB371213A GB 371213 A GB371213 A GB 371213A GB 18313/31 A GB18313/31 A GB 18313/31A GB 1831331 A GB1831331 A GB 1831331A GB 371213 A GB371213 A GB 371213A
Authority
GB
United Kingdom
Prior art keywords
per cent
aluminium
coatings
alloys
treatment
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
GB18313/31A
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.)
Siemens Elektro Osmose GmbH
Original Assignee
Siemens Elektro Osmose GmbH
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 Siemens Elektro Osmose GmbH filed Critical Siemens Elektro Osmose GmbH
Publication of GB371213A publication Critical patent/GB371213A/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
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
    • C25D11/08—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing inorganic acids
    • 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
    • C25D11/024—Anodisation under pulsed or modulated current or potential
    • 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
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • 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
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/14—Producing integrally coloured layers
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

371,213. Electrolytic treatment of aluminium and its alloys. SIEMENSELEKTRO-OSMOSE GES., Rohrdamm, Siemensstadt, Berlin. June 24, 1931, No. 18313. Convention date, June 1, 1930. [Class 41.] In a process for forming corrosion-resisting protective coatings on articles of aluminium and its alloys by alternating current treatment in an acid bath, uniformly coloured coatings are produced by the use of a counter-electrode consisting of a similar metal which has already been exposed to a similar treatment. The counter-electrode preferably has a coating of light colour produced by alternating current treatment in a dilute chromic acid solution, e.g. of 0À05 per cent strength. The electrolyte employed in coating the articles themselves may be chromic acid of strength from 1 to 50 per cent; the voltage may be gradually raised to 40-50 and maintained at this value for up to an hour. Detailed examples for the production of pearl grey, brownish yellow and deep black coatings are given. An aluminium alloy containing 3-4 per cent copper, 0À5-1 per cent manganese and 0À5 per cent magnesium and an alloy containing 4 per cent copper, 2 per cent silicon and 0À3 per cent iron may be treated.
GB18313/31A 1929-09-16 1931-06-24 Improvements in or relating to the production of corrosionresisting coatings on aluminium or aluminium alloys Expired GB371213A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DES93945D DE600046C (en) 1929-09-16 1929-09-16 Process for the production of corrosion-resistant protective coatings on aluminum or aluminum alloys
DE562615T 1930-07-02
DE390110X 1931-12-10

Publications (1)

Publication Number Publication Date
GB371213A true GB371213A (en) 1932-04-21

Family

ID=34577269

Family Applications (2)

Application Number Title Priority Date Filing Date
GB18313/31A Expired GB371213A (en) 1929-09-16 1931-06-24 Improvements in or relating to the production of corrosionresisting coatings on aluminium or aluminium alloys
GB35223/32A Expired GB390110A (en) 1929-09-16 1932-12-12 Improvements in or relating to the production of corrosion-resisting coatings on aluminium or aluminium alloys

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB35223/32A Expired GB390110A (en) 1929-09-16 1932-12-12 Improvements in or relating to the production of corrosion-resisting coatings on aluminium or aluminium alloys

Country Status (6)

Country Link
US (2) US1923539A (en)
AT (1) AT133115B (en)
BE (1) BE373447A (en)
DE (2) DE600046C (en)
FR (2) FR702266A (en)
GB (2) GB371213A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL56499C (en) * 1938-09-22
BE437650A (en) * 1939-01-31
US2578400A (en) * 1947-03-29 1951-12-11 Charles C Cohn Method for providing oxide coating on aluminum and its alloys
US2574225A (en) * 1948-07-28 1951-11-06 Benzol Products Company Process for rendering metal surfaces antiseptic and products therefrom
US2700212A (en) * 1948-10-15 1955-01-25 Gen Electric Electrical conductor
US2607825A (en) * 1948-10-20 1952-08-19 Eisler Paul Electric capacitor and method of making it
US2666023A (en) * 1948-12-30 1954-01-12 Siegfried Junghans Anodic coating of aluminum
US2930951A (en) * 1957-07-08 1960-03-29 Gen Electric Electrical capacitor
US3091676A (en) * 1959-12-18 1963-05-28 Arthur H Koster Fluid level control system
US3382160A (en) * 1960-03-31 1968-05-07 Asada Tahei Process for inorganically coloring aluminum
US4104136A (en) * 1974-09-22 1978-08-01 Reynolds Metals Company Process for applying thin molybdenum containing coatings on aluminum for solar energy absorption

Also Published As

Publication number Publication date
FR702266A (en) 1931-04-03
US1923539A (en) 1933-08-22
DE600046C (en) 1934-07-13
BE373447A (en)
DE562615C (en) 1932-10-27
AT133115B (en) 1933-05-10
US1936058A (en) 1933-11-21
FR42676E (en) 1933-09-01
GB390110A (en) 1933-03-30

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