GB737659A - Improvements in methods of treating aluminium or aluminium alloy surfaces - Google Patents

Improvements in methods of treating aluminium or aluminium alloy surfaces

Info

Publication number
GB737659A
GB737659A GB9956/52A GB995652A GB737659A GB 737659 A GB737659 A GB 737659A GB 9956/52 A GB9956/52 A GB 9956/52A GB 995652 A GB995652 A GB 995652A GB 737659 A GB737659 A GB 737659A
Authority
GB
United Kingdom
Prior art keywords
solution
aluminium
brightening agent
alloy surfaces
methods
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
GB9956/52A
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.)
Motors Liquidation Co
Original Assignee
Motors Liquidation Co
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 Motors Liquidation Co filed Critical Motors Liquidation Co
Publication of GB737659A publication Critical patent/GB737659A/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
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F3/00—Brightening metals by chemical means
    • C23F3/02—Light metals
    • C23F3/03—Light metals with acidic solutions

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

Aluminium and aluminium alloy surfaces are brightened by treatment with an aqueous solution containing nitric acid, an ammonium fluoride and an alcohol brightening agent, the effectiveness of the solution being maintained during the treatment by the addition of further quantities of nitric acid, an ammonium fluoride and an alcohol brightening agent and by removing from the solution a small amount of solution and adding a quantity of new solution equal to that removed. The fluoride is preferably ammonium bifluoride, the brightening agent ethylene glycol, glycerine or sugar and the solution may also contain chromic acid. Specification 726,660 is referred to.
GB9956/52A 1951-05-03 1952-04-21 Improvements in methods of treating aluminium or aluminium alloy surfaces Expired GB737659A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US737659XA 1951-05-03 1951-05-03

Publications (1)

Publication Number Publication Date
GB737659A true GB737659A (en) 1955-09-28

Family

ID=22115675

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9956/52A Expired GB737659A (en) 1951-05-03 1952-04-21 Improvements in methods of treating aluminium or aluminium alloy surfaces

Country Status (1)

Country Link
GB (1) GB737659A (en)

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