GB1416417A - Colouring of aluminium black - Google Patents

Colouring of aluminium black

Info

Publication number
GB1416417A
GB1416417A GB2083874A GB2083874A GB1416417A GB 1416417 A GB1416417 A GB 1416417A GB 2083874 A GB2083874 A GB 2083874A GB 2083874 A GB2083874 A GB 2083874A GB 1416417 A GB1416417 A GB 1416417A
Authority
GB
United Kingdom
Prior art keywords
aluminium
solution
blackening
exposed
treatment
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
GB2083874A
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.)
Alcan Holdings Switzerland AG
Original Assignee
Alusuisse Holdings AG
Schweizerische Aluminium AG
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 Alusuisse Holdings AG, Schweizerische Aluminium AG filed Critical Alusuisse Holdings AG
Publication of GB1416417A publication Critical patent/GB1416417A/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
    • 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
    • C23C22/05—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 using aqueous solutions
    • C23C22/06—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 using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/40—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 using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates

Landscapes

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

Abstract

1416417 Blackening aluminium SWISS ALUMINIUM Ltd 10 May 1974 [17 May 1973] 20838/74 Heading C7U [Also in Division G2] The surface of an Al or Al alloy article is blackened by etching the surface in an iron chloride solution, followed by treatment with an aqueous acidic solution of ammonium molybdate and aluminium chloride, and after-treatment with an aqueous alkaline solution. The blackening solution preferably contains ammonium hepta-molybdate and AlCl 3 at a pH of 2-5 and a temperature of 80-92‹C. The alkaline solution, also preferably at 80-92‹C, may contain sodium chromate and sodium carbonate, or may contain ammonia or an ammonia derivative, e.g. hydrazine or hydroxyl amine. In an example, an anodized Al sheet was coated with a photo-sensitive lacquer, covered with a negative and exposed to light. The unexposed areas were etched away and the sheet subjected to the blackening process, wherein only the areas not exposed to light were coloured black.
GB2083874A 1973-05-17 1974-05-10 Colouring of aluminium black Expired GB1416417A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH703573A CH584762A5 (en) 1973-05-17 1973-05-17

Publications (1)

Publication Number Publication Date
GB1416417A true GB1416417A (en) 1975-12-03

Family

ID=4318919

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2083874A Expired GB1416417A (en) 1973-05-17 1974-05-10 Colouring of aluminium black

Country Status (14)

Country Link
US (1) US3920488A (en)
AT (1) AT328246B (en)
BE (1) BE815058A (en)
BR (1) BR7403995D0 (en)
CA (1) CA1030409A (en)
CH (1) CH584762A5 (en)
DE (1) DE2419819C2 (en)
ES (1) ES426179A1 (en)
FR (1) FR2229786B1 (en)
GB (1) GB1416417A (en)
IT (1) IT1012497B (en)
NL (1) NL7406676A (en)
NO (1) NO135032C (en)
SE (1) SE397968B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104532227A (en) * 2003-06-05 2015-04-22 金属涂层国际公司 Compositions and methods for darkening and imparting corrosion-resistant properties to zinc or other active metals

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2959683B2 (en) * 1991-04-30 1999-10-06 三井鉱山株式会社 Method for producing high-purity alumina fiber molded body
JP3325334B2 (en) * 1993-04-28 2002-09-17 日本パーカライジング株式会社 Bright blue treatment method for hot-dip zinc-aluminum alloy plated steel sheet
DE102011080750A1 (en) * 2011-08-10 2013-02-14 Aktiebolaget Skf Method for increasing the resistance of a burnishing layer and component with a burnishing layer
DE102012204409B3 (en) 2012-03-20 2013-09-19 Aktiebolaget Skf Method for producing a rolling bearing and rolling bearing
DE102013201321A1 (en) 2013-01-28 2014-07-31 Aktiebolaget Skf Method for producing a rolling bearing and rolling bearing
CN106383048B (en) * 2016-09-07 2018-09-11 济南大学 A kind of preparation for petrographic detector identification aluminophosphates mineral etchant

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE480995C (en) * 1926-04-16 1929-08-13 Aladar Pacz Dr Process for coating and coloring metals
DE712877C (en) * 1939-03-11 1941-10-27 Bosch Gmbh Robert Process for the production of black-colored, corrosion-resistant protective layers on the surface of objects made of aluminum or aluminum alloys
US2285468A (en) * 1941-07-08 1942-06-09 Aluminum Co Of America Surface treatment for aluminum
DE762459C (en) * 1942-07-17 1953-01-26 Bosch Gmbh Robert Process for coloring aluminum and its alloys black
US2554256A (en) * 1948-05-15 1951-05-22 Westinghouse Electric Corp Process for treating aluminum to provide selective coloration of portions thereof
DE1277646B (en) * 1963-06-27 1968-09-12 Metallgesellschaft Ag Process for increasing the corrosion resistance of surfaces made of aluminum and aluminum alloys
US3326728A (en) * 1963-08-06 1967-06-20 Olin Mathieson Colored aluminum and process therefor
US3833374A (en) * 1970-07-14 1974-09-03 Metalphoto Corp Coloring of anodized aluminum
US3799815A (en) * 1971-12-15 1974-03-26 C Subramaniam Coloring of aluminum and its alloys

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104532227A (en) * 2003-06-05 2015-04-22 金属涂层国际公司 Compositions and methods for darkening and imparting corrosion-resistant properties to zinc or other active metals

Also Published As

Publication number Publication date
BR7403995D0 (en) 1974-12-03
ES426179A1 (en) 1976-07-01
IT1012497B (en) 1977-03-10
DE2419819A1 (en) 1974-12-05
FR2229786A1 (en) 1974-12-13
US3920488A (en) 1975-11-18
CA1030409A (en) 1978-05-02
CH584762A5 (en) 1977-02-15
NO135032C (en) 1977-01-26
DE2419819C2 (en) 1984-05-24
AT328246B (en) 1976-03-10
NL7406676A (en) 1974-11-19
SE397968B (en) 1977-11-28
NO135032B (en) 1976-10-18
ATA406074A (en) 1975-05-15
BE815058A (en) 1974-09-02
FR2229786B1 (en) 1979-05-11

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee