GB535199A - Improvements in or relating to the production of transparent oxide coatings on aluminium or aluminium alloys - Google Patents

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

Info

Publication number
GB535199A
GB535199A GB3693/40A GB369340A GB535199A GB 535199 A GB535199 A GB 535199A GB 3693/40 A GB3693/40 A GB 3693/40A GB 369340 A GB369340 A GB 369340A GB 535199 A GB535199 A GB 535199A
Authority
GB
United Kingdom
Prior art keywords
aluminium
relating
production
transparent oxide
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
GB3693/40A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB535199A publication Critical patent/GB535199A/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
    • C23C22/82—After-treatment
    • C23C22/83—Chemical after-treatment

Landscapes

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

Abstract

535,199. Coating metals. BOSCH GES., R. Feb. 28, 1940, No. 3693. Convention date, March 18, 1939. [Class 82 (ii)] Aluminium and its alloys are given a non- metallic corrosion-preventing coating by dipping in a heated alkaline chromate solution, and. after washing, the surface is brightened by treatment with a 5 per cent. solution of chromic acid heated to 60‹C. The period of the latter treatment is one-half to one minute. The resulting matt surface may be glazed by oiling or greasing. and will retain its glaze when rubbed dry.
GB3693/40A 1939-03-18 1940-02-28 Improvements in or relating to the production of transparent oxide coatings on aluminium or aluminium alloys Expired GB535199A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE535199X 1939-03-18

Publications (1)

Publication Number Publication Date
GB535199A true GB535199A (en) 1941-04-01

Family

ID=6556783

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3693/40A Expired GB535199A (en) 1939-03-18 1940-02-28 Improvements in or relating to the production of transparent oxide coatings on aluminium or aluminium alloys

Country Status (1)

Country Link
GB (1) GB535199A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2550328A (en) * 1949-11-14 1951-04-24 Samuel L Cohn Method of coating aluminum or its alloys
US5637404A (en) * 1992-01-31 1997-06-10 Aluminum Company Of America Reflective aluminum strip

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2550328A (en) * 1949-11-14 1951-04-24 Samuel L Cohn Method of coating aluminum or its alloys
US5637404A (en) * 1992-01-31 1997-06-10 Aluminum Company Of America Reflective aluminum strip

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