GB1439933A - Sulphuric acid anodising processes - Google Patents

Sulphuric acid anodising processes

Info

Publication number
GB1439933A
GB1439933A GB2409472A GB2409472A GB1439933A GB 1439933 A GB1439933 A GB 1439933A GB 2409472 A GB2409472 A GB 2409472A GB 2409472 A GB2409472 A GB 2409472A GB 1439933 A GB1439933 A GB 1439933A
Authority
GB
United Kingdom
Prior art keywords
anodizing
litre
saturation
ion
sulphuric acid
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
GB2409472A
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.)
Kape J M
Original Assignee
Kape J M
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 Kape J M filed Critical Kape J M
Priority to GB2409472A priority Critical patent/GB1439933A/en
Publication of GB1439933A publication Critical patent/GB1439933A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
    • C25D11/08—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing inorganic acids
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/14—Producing integrally coloured layers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Glass Compositions (AREA)

Abstract

1439933 Anodizing aluminium alloys J M KAPE 15 Aug 1973 [23 May 1972] 24094/72 Heading C7B Aluminium alloys are anodized using A.C. current at a temperature of -5‹C to 30‹C using as electrolyte an aqueous solution comprising 4-40 wt per cent of sulphuric acid and a substance which will react with sulphur formed during anodizing; the substance being ferric salt to provide 0.1 gm ion/litre to saturation; nickel, cobalt, vanadium, chromium, manganese or cerium sulphate to provide the metal in a proportion of 0.1 gm ion/litre to saturation; or a chromate, vanadate, molybdate or permanganate to provide those ions in a range 0.1 gm ion/litre to saturation. Various examples of suitable sulphur combining substances are given. The anodizing may be carried out as a batch or continuous process. The alloys may be etched in NaOH before anodizing; and the coatings may be sealed in Ni acetate or itaconate or in boiling water.
GB2409472A 1972-05-23 1972-05-23 Sulphuric acid anodising processes Expired GB1439933A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2409472A GB1439933A (en) 1972-05-23 1972-05-23 Sulphuric acid anodising processes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2409472A GB1439933A (en) 1972-05-23 1972-05-23 Sulphuric acid anodising processes

Publications (1)

Publication Number Publication Date
GB1439933A true GB1439933A (en) 1976-06-16

Family

ID=10206291

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2409472A Expired GB1439933A (en) 1972-05-23 1972-05-23 Sulphuric acid anodising processes

Country Status (1)

Country Link
GB (1) GB1439933A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4601796A (en) * 1984-09-19 1986-07-22 Aluminum Company Of America High reflectance semi-specular anodized aluminum alloy product and method of forming same
WO2002029134A2 (en) * 2000-10-04 2002-04-11 The Johns Hopkins University Method for inhibiting corrosion of alloys employing electrochemistry
EP2955250A1 (en) * 2014-06-13 2015-12-16 Innovent e.V. Method for coating a substrate
EP2966196A3 (en) * 2014-06-13 2016-03-09 Innovent e.V. Method for coating a substrate

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4601796A (en) * 1984-09-19 1986-07-22 Aluminum Company Of America High reflectance semi-specular anodized aluminum alloy product and method of forming same
WO2002029134A2 (en) * 2000-10-04 2002-04-11 The Johns Hopkins University Method for inhibiting corrosion of alloys employing electrochemistry
WO2002029134A3 (en) * 2000-10-04 2003-11-06 Univ Johns Hopkins Method for inhibiting corrosion of alloys employing electrochemistry
EP2955250A1 (en) * 2014-06-13 2015-12-16 Innovent e.V. Method for coating a substrate
EP2966196A3 (en) * 2014-06-13 2016-03-09 Innovent e.V. Method for coating a substrate

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee