GB965837A - Treatment of aluminum oxide coatings - Google Patents

Treatment of aluminum oxide coatings

Info

Publication number
GB965837A
GB965837A GB2364462A GB2364462A GB965837A GB 965837 A GB965837 A GB 965837A GB 2364462 A GB2364462 A GB 2364462A GB 2364462 A GB2364462 A GB 2364462A GB 965837 A GB965837 A GB 965837A
Authority
GB
United Kingdom
Prior art keywords
treatment
bath
sio2
effected
stages
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
GB2364462A
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.)
SAMUEL LENARD COHN
Original Assignee
SAMUEL LENARD COHN
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 SAMUEL LENARD COHN filed Critical SAMUEL LENARD COHN
Priority to GB2364462A priority Critical patent/GB965837A/en
Publication of GB965837A publication Critical patent/GB965837A/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
    • C25D11/18—After-treatment, e.g. pore-sealing
    • C25D11/24—Chemical after-treatment
    • C25D11/246—Chemical after-treatment for sealing layers
    • 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

Landscapes

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

Abstract

The porous oxide surface formed on aluminium or aluminium alloys by anodizing, is sealed in two stages, (1) treating with an aqueous bath under such conditions that only partial sealing of the pores is effected, (2) completing the sealing with sodium silicate solution at 150 DEG F. or above for 5-30 minutes. The first solution may also be sodium silicate in which SiO2:Na2O is above 2:1, and treatment is effected at 120 DEG F. for 0.5-5 minutes. The second silicate bath preferably has a SiO2:Na2O ratio of up to 4:1 and is used at 190 DEG F. The same silicate solution may be applied in both stages, reducing the immersion in stage (1) to 1 minute, to avoid etching, raising the surface in the air to cool before immersion in the second bath. Other aqueous baths used in stage (1) include sodium dichromate, molybdate, disodium phosphate, or hot water at 150 DEG C. to boiling point. A wide range of anodizing solutions forming porous coatings is referred to.
GB2364462A 1962-06-19 1962-06-19 Treatment of aluminum oxide coatings Expired GB965837A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2364462A GB965837A (en) 1962-06-19 1962-06-19 Treatment of aluminum oxide coatings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2364462A GB965837A (en) 1962-06-19 1962-06-19 Treatment of aluminum oxide coatings

Publications (1)

Publication Number Publication Date
GB965837A true GB965837A (en) 1964-08-06

Family

ID=10198964

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2364462A Expired GB965837A (en) 1962-06-19 1962-06-19 Treatment of aluminum oxide coatings

Country Status (1)

Country Link
GB (1) GB965837A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2385819A1 (en) * 1977-03-30 1978-10-27 Yoshida Kogyo Kk METHOD FOR THE MANUFACTURE OF A COATING FILM ON AN ANODIZED AND CORROSION-RESISTANT SURFACE FILM OF ALUMINUM ARTICLES
EP0105170A2 (en) * 1982-09-01 1984-04-11 Hoechst Aktiengesellschaft Process for the after treatment of aluminium oxide layers with aqueous solutions containing alkali silicate, and its application during the manufacture of supports for offset printing plates
US4659439A (en) * 1982-09-24 1987-04-21 Pilot Man-Nen-Hitsu Kabushiki Kaisha Surface treatment of aluminum or aluminum alloys
EP1236815A2 (en) * 2001-03-02 2002-09-04 Honda Giken Kogyo Kabushiki Kaisha Process for improving an anodizing film, an anodizing film structure and an aluminum-alloy-made outboard engine
EP1486588A2 (en) * 2002-10-10 2004-12-15 Süddeutsche Aluminium Manufaktur GmbH Process for hydrating metal oxide layers on metal parts, as well as the hydrated parts
US7235142B2 (en) 2002-01-04 2007-06-26 University Of Dayton Non-toxic corrosion-protection rinses and seals based on cobalt
WO2009072546A1 (en) * 2007-12-06 2009-06-11 Ulvac, Inc. Method for forming protective film
EP3191302A4 (en) * 2014-09-08 2018-05-02 MCT Research and Development Silicate coatings
WO2021110964A1 (en) * 2019-12-05 2021-06-10 Coated Metallic Technologies Limited Protective coatings for metals

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2385819A1 (en) * 1977-03-30 1978-10-27 Yoshida Kogyo Kk METHOD FOR THE MANUFACTURE OF A COATING FILM ON AN ANODIZED AND CORROSION-RESISTANT SURFACE FILM OF ALUMINUM ARTICLES
EP0105170A2 (en) * 1982-09-01 1984-04-11 Hoechst Aktiengesellschaft Process for the after treatment of aluminium oxide layers with aqueous solutions containing alkali silicate, and its application during the manufacture of supports for offset printing plates
EP0105170A3 (en) * 1982-09-01 1986-08-06 Hoechst Aktiengesellschaft Process for the after treatment of aluminium oxide layers with aqueous solutions containing alkali silicate, and its application during the manufacture of supports for offset printing plates
US4659439A (en) * 1982-09-24 1987-04-21 Pilot Man-Nen-Hitsu Kabushiki Kaisha Surface treatment of aluminum or aluminum alloys
EP1236815A2 (en) * 2001-03-02 2002-09-04 Honda Giken Kogyo Kabushiki Kaisha Process for improving an anodizing film, an anodizing film structure and an aluminum-alloy-made outboard engine
EP1236815A3 (en) * 2001-03-02 2004-02-04 Honda Giken Kogyo Kabushiki Kaisha Process for improving an anodizing film, an anodizing film structure and an aluminum-alloy-made outboard engine
CN100392156C (en) * 2001-03-02 2008-06-04 本田技研工业株式会社 Method for improving anodic oxidation film, anodic oxidation film structure and outboard motor made of Al-alloy
US7235142B2 (en) 2002-01-04 2007-06-26 University Of Dayton Non-toxic corrosion-protection rinses and seals based on cobalt
EP1486588A3 (en) * 2002-10-10 2006-09-06 Süddeutsche Aluminium Manufaktur GmbH Process for hydrating metal oxide layers on metal parts, as well as the hydrated parts
EP1486588A2 (en) * 2002-10-10 2004-12-15 Süddeutsche Aluminium Manufaktur GmbH Process for hydrating metal oxide layers on metal parts, as well as the hydrated parts
WO2009072546A1 (en) * 2007-12-06 2009-06-11 Ulvac, Inc. Method for forming protective film
KR101222921B1 (en) * 2007-12-06 2013-01-17 울박, 인크 Method for forming protective film
EP3191302A4 (en) * 2014-09-08 2018-05-02 MCT Research and Development Silicate coatings
EP4249236A3 (en) * 2014-09-08 2023-11-15 MCT Holdings LTD Silicate coatings
WO2021110964A1 (en) * 2019-12-05 2021-06-10 Coated Metallic Technologies Limited Protective coatings for metals
CN115151613A (en) * 2019-12-05 2022-10-04 Mct控股有限公司 Metal protective coating
CN115151613B (en) * 2019-12-05 2024-05-24 Mct控股有限公司 Metal protective coating

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