GB1096498A - Improvements relating to the treatment of metal surfaces - Google Patents

Improvements relating to the treatment of metal surfaces

Info

Publication number
GB1096498A
GB1096498A GB5348165A GB5348165A GB1096498A GB 1096498 A GB1096498 A GB 1096498A GB 5348165 A GB5348165 A GB 5348165A GB 5348165 A GB5348165 A GB 5348165A GB 1096498 A GB1096498 A GB 1096498A
Authority
GB
United Kingdom
Prior art keywords
solution
sodium
nitrate
treatment
replenished
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
GB5348165A
Inventor
Peter Burden
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.)
Pyrene Co Ltd
Original Assignee
Pyrene Co 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 Pyrene Co Ltd filed Critical Pyrene Co Ltd
Priority to GB5348165A priority Critical patent/GB1096498A/en
Priority to FR87520A priority patent/FR1510207A/en
Priority to SE1722566A priority patent/SE307049B/xx
Priority to DE19661621620 priority patent/DE1621620A1/en
Priority to BE691281A priority patent/BE691281A/xx
Publication of GB1096498A publication Critical patent/GB1096498A/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
    • C23F1/00—Etching metallic material by chemical means
    • C23F1/10—Etching compositions
    • C23F1/14—Aqueous compositions
    • C23F1/32—Alkaline compositions
    • C23F1/36—Alkaline compositions for etching aluminium or alloys thereof
    • 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
    • C23F1/00—Etching metallic material by chemical means
    • C23F1/46—Regeneration of etching compositions

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)
  • ing And Chemical Polishing (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

In a process for etching aluminium in a sodium hydroxide, sodium nitrate, and sodium aluminate solution, the solution is replenished by adding nitric acid or a nitric acid-sodium nitrate mixture. Until the solution contains an equilibrium concentration of sodium aluminate and hydrated alumina is precipitated out, the solution may be replenished with sodium hydroxide and nitrate. The solution may also contain a foam producing surface active agent e.g. anionic sulphates or sulphonates and non-ionic ethylene oxide condensates.
GB5348165A 1965-12-16 1965-12-16 Improvements relating to the treatment of metal surfaces Expired GB1096498A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB5348165A GB1096498A (en) 1965-12-16 1965-12-16 Improvements relating to the treatment of metal surfaces
FR87520A FR1510207A (en) 1965-12-16 1966-12-15 Metal surface treatment process
SE1722566A SE307049B (en) 1965-12-16 1966-12-15
DE19661621620 DE1621620A1 (en) 1965-12-16 1966-12-15 Process for pickling aluminum
BE691281A BE691281A (en) 1965-12-16 1966-12-15

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5348165A GB1096498A (en) 1965-12-16 1965-12-16 Improvements relating to the treatment of metal surfaces

Publications (1)

Publication Number Publication Date
GB1096498A true GB1096498A (en) 1967-12-29

Family

ID=10467979

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5348165A Expired GB1096498A (en) 1965-12-16 1965-12-16 Improvements relating to the treatment of metal surfaces

Country Status (5)

Country Link
BE (1) BE691281A (en)
DE (1) DE1621620A1 (en)
FR (1) FR1510207A (en)
GB (1) GB1096498A (en)
SE (1) SE307049B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6019910A (en) * 1997-12-22 2000-02-01 Ford Motor Company Etching tri-metal layers to form electronic circuits using aqueous alkaline solutions including nitrates

Also Published As

Publication number Publication date
FR1510207A (en) 1968-01-19
BE691281A (en) 1967-05-16
SE307049B (en) 1968-12-16
DE1621620A1 (en) 1971-05-13

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