GB1117994A - Aqueous alkali aluminum etchants - Google Patents

Aqueous alkali aluminum etchants

Info

Publication number
GB1117994A
GB1117994A GB15946/66A GB1594666A GB1117994A GB 1117994 A GB1117994 A GB 1117994A GB 15946/66 A GB15946/66 A GB 15946/66A GB 1594666 A GB1594666 A GB 1594666A GB 1117994 A GB1117994 A GB 1117994A
Authority
GB
United Kingdom
Prior art keywords
acid
sodium
hydroxide
aluminium
fluoride
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
GB15946/66A
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.)
Pennwalt Corp
Original Assignee
Pennwalt Corp
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 Pennwalt Corp filed Critical Pennwalt Corp
Publication of GB1117994A publication Critical patent/GB1117994A/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
    • 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

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 By Liquid Or Steam (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

1,117,994. Modifying aluminium surfaces. PENNSALT CHEMICAL CORP. April 12, 1966 [April 9, 1965], No. 15946/66. Heading C7U. Aluminium is etched to give it a matte surface by contacting with a solution comprising 13 to 90 g. 11. of an alkali metal hydroxide, e. g. sodium hydroxide, a water soluble hexavalent chromium compound giving a Cr ion concentration of 0À02% to 4À5% of the hydroxide, a water soluble fluoride giving an F ion concentration of 0À04% to 2À0% of the hydroxide concentration, and a chelating agent which is one or more of mannitol, ascorbic acid, sorbose, sorbitol, citric acid, tannic acid, e.d.t. a, sodium, chrom, glucosate, diglycolic acid, picolinic acid, aspartic acid. dithio-oxamide, d-gluconolactone, 1-rhamnose. The fluoride may be sodium-, sodium acid-, potassium-, potassium acid-, sodium aluminium-, sodium phosphorous-, ammonium-, ammonium acid-, chromic- or magnesium fluoride. The composition of a granular mixture for making up the solution are described.
GB15946/66A 1965-04-09 1966-04-12 Aqueous alkali aluminum etchants Expired GB1117994A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US447073A US3314890A (en) 1965-04-09 1965-04-09 Alkali etching solution for aluminum

Publications (1)

Publication Number Publication Date
GB1117994A true GB1117994A (en) 1968-06-26

Family

ID=23774903

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15946/66A Expired GB1117994A (en) 1965-04-09 1966-04-12 Aqueous alkali aluminum etchants

Country Status (5)

Country Link
US (1) US3314890A (en)
CH (1) CH454568A (en)
DE (1) DE1621632B2 (en)
GB (1) GB1117994A (en)
SE (1) SE330304B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2133044A (en) * 1983-01-10 1984-07-18 Pennwalt Corp Cleaning and etching process for aluminum containers

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3653095A (en) * 1969-06-18 1972-04-04 Rohm & Haas Synergistic combination for inhibiting the attack of alkaline solutions on alkali sensitive substrates
DE4117625C2 (en) * 1991-05-29 1997-09-04 Siemens Ag Cleaning process
DE4231879C2 (en) * 1992-09-23 1998-07-02 Alcon Aluminium Consult Gmbh Process for pickling aluminum surfaces to obtain sodium aluminate solution
CA2716144A1 (en) 2009-10-02 2011-04-02 University Of Windsor Method of surface treatment of aluminum foil and its alloy and method of producing immobilized nanocatalyst of transition metal oxides and their alloys
CN114318316B (en) * 2021-10-28 2024-01-12 中国航发西安动力控制科技有限公司 Colorless chemical oxidation treatment solution and process for aluminum alloy
CN114032556B (en) * 2021-12-20 2023-07-14 厦门华弘昌科技有限公司 Aluminum alloy alkaline washing liquid and preparation method thereof

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2687346A (en) * 1953-04-24 1954-08-24 Kelite Products Inc Process and composition for brightening the skin of aircraft
US2817612A (en) * 1953-09-23 1957-12-24 Joseph C Brennan Process and quenching bath for hardening steel articles
US2828193A (en) * 1954-08-09 1958-03-25 Turco Products Inc Method for rejuvenation of aluminum treating solutions
US2931778A (en) * 1954-09-28 1960-04-05 Diamond Alkali Co Alkaline composition
US2882134A (en) * 1954-12-08 1959-04-14 Pennsalt Chemicals Corp Process for aluminum etching
US2939772A (en) * 1955-07-18 1960-06-07 Turco Products Inc Process for etching aluminum and aluminum alloy surfaces

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2133044A (en) * 1983-01-10 1984-07-18 Pennwalt Corp Cleaning and etching process for aluminum containers
US4477290A (en) * 1983-01-10 1984-10-16 Pennwalt Corporation Cleaning and etching process for aluminum containers

Also Published As

Publication number Publication date
US3314890A (en) 1967-04-18
CH454568A (en) 1968-04-15
DE1621632B2 (en) 1971-10-07
DE1621632A1 (en) 1970-03-26
SE330304B (en) 1970-11-09

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