GB528748A - Improvements in or relating to the treatment of aluminium and aluminium base alloy surfaces - Google Patents

Improvements in or relating to the treatment of aluminium and aluminium base alloy surfaces

Info

Publication number
GB528748A
GB528748A GB13096/39A GB1309639A GB528748A GB 528748 A GB528748 A GB 528748A GB 13096/39 A GB13096/39 A GB 13096/39A GB 1309639 A GB1309639 A GB 1309639A GB 528748 A GB528748 A GB 528748A
Authority
GB
United Kingdom
Prior art keywords
aluminium
acid solution
solution
per cent
coating
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
GB13096/39A
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.)
ALUMINUM COLORS Inc
Original Assignee
ALUMINUM COLORS Inc
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 ALUMINUM COLORS Inc filed Critical ALUMINUM COLORS Inc
Publication of GB528748A publication Critical patent/GB528748A/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
    • C23F4/00—Processes for removing metallic material from surfaces, not provided for in group C23F1/00 or C23F3/00
    • 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
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/34—Pretreatment of metallic surfaces to be electroplated
    • C25D5/42—Pretreatment of metallic surfaces to be electroplated of light metals
    • C25D5/44—Aluminium

Landscapes

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

Abstract

528,748. Etching. ALUMINUM COLORS, Inc. May 2, 1939, No. 13096. Convention date, May 3, 1938. [Class 100 (ii)] [Also in Groups II, III and XXXVI] Relates to the treatment of aluminium or aluminium base alloy surfaces to secure the firm adherence thereto of a subsequently applied coating of paint, or electrochemically deposited metallic or non-metallic material, or coatings applied mechanically, such as rolled or sprayed coatings. The surface is treated in an aqueous alkali-metal carbonate-chromate solution, preferably at or near boiling temperature, to produce an oxide coating on the surface, and the oxide coating is thereafter removed with an aqueous solution of chromic and/or nitric acids the surface being left uniformly etched. The carbonate-chromate solution preferably contains alkali metal carbonates and dichromates in the ratio of about 3 : 1, the chromic acid solution preferably contains 5 per cent by weight of chromic acid, and the nitric acid solution contains 5-70 per cent., preferably 35 per cent., by weight of nitric acid. When a metallic coating is to be applied, as by electroplating, to the surface, the oxide coating is preferably removed by the nitric acid solution, which is employed at room temperature. The chromic acid solution is preferably employed at a temperature of approximately 180‹F. Specifications 393,996 and 396,204, [both in Group II], are referred to.
GB13096/39A 1938-05-03 1939-05-02 Improvements in or relating to the treatment of aluminium and aluminium base alloy surfaces Expired GB528748A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US205756A US2171546A (en) 1938-05-03 1938-05-03 Surface preparation

Publications (1)

Publication Number Publication Date
GB528748A true GB528748A (en) 1940-11-06

Family

ID=22763519

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13096/39A Expired GB528748A (en) 1938-05-03 1939-05-02 Improvements in or relating to the treatment of aluminium and aluminium base alloy surfaces

Country Status (2)

Country Link
US (1) US2171546A (en)
GB (1) GB528748A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0004824A2 (en) * 1978-03-31 1979-10-17 Societe De Vente De L'aluminium Pechiney Means providing detachable contact beteween two conductors and method of coating a piece of aluminium with a layer of nickel

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2502621A (en) * 1945-10-08 1950-04-04 Menasco Mfg Company Method of determining oxygen concentration in steel
US2671717A (en) * 1950-08-29 1954-03-09 Gen Electric Chemical brightening of aluminum
US2829091A (en) * 1956-06-04 1958-04-01 Menasco Mfg Company Method for electroplating titanium
NL104465C (en) * 1957-02-12
US2942955A (en) * 1957-05-20 1960-06-28 Wyandotte Chemicals Corp Aluminum etching composition and method
US3073765A (en) * 1960-04-18 1963-01-15 Adams Ronald Alfred Charles Process for electrolytically graining aluminum lithographic plates
US3287179A (en) * 1963-01-04 1966-11-22 Frank Theodore Process for preparing aluminum surfaces prior to plating
US5322812A (en) * 1991-03-20 1994-06-21 Crosspoint Solutions, Inc. Improved method of fabricating antifuses in an integrated circuit device and resulting structure
US5840629A (en) * 1995-12-14 1998-11-24 Sematech, Inc. Copper chemical mechanical polishing slurry utilizing a chromate oxidant
US5866031A (en) * 1996-06-19 1999-02-02 Sematech, Inc. Slurry formulation for chemical mechanical polishing of metals
US5846398A (en) * 1996-08-23 1998-12-08 Sematech, Inc. CMP slurry measurement and control technique
CN112730487A (en) * 2020-12-17 2021-04-30 河钢股份有限公司 Preparation method and measurement method of aluminum-silicon coated steel residual stress measurement sample

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0004824A2 (en) * 1978-03-31 1979-10-17 Societe De Vente De L'aluminium Pechiney Means providing detachable contact beteween two conductors and method of coating a piece of aluminium with a layer of nickel
FR2421452A1 (en) * 1978-03-31 1979-10-26 Pechiney Aluminium NEW METHOD FOR MAKING ELECTRICAL CONTACTS ON ALUMINUM PARTS
EP0004824A3 (en) * 1978-03-31 1979-10-31 Societe De Vente De L'aluminium Pechiney Method for realising electrical contacts on pieces of aluminium, devices for ensuring an electrical connection by making a contact, and process for realising such devices

Also Published As

Publication number Publication date
US2171546A (en) 1939-09-05

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