GB1265268A - - Google Patents

Info

Publication number
GB1265268A
GB1265268A GB1265268DA GB1265268A GB 1265268 A GB1265268 A GB 1265268A GB 1265268D A GB1265268D A GB 1265268DA GB 1265268 A GB1265268 A GB 1265268A
Authority
GB
United Kingdom
Prior art keywords
vol
haehmite
kgms
march
layer
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
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 filed Critical
Publication of GB1265268A publication Critical patent/GB1265268A/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
    • C23C22/60—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 alkaline aqueous solutions with pH greater than 8
    • C23C22/66—Treatment of aluminium or alloys based thereon

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)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

1,265,268. Forming haehmite layer on Al. SHOWA ALUMINIUM K.K. March 6, 1970 [March 8, 1969], No.10913/70. Heading C7U. Acid insoluble layer of γ s Al 2 O 3 H 2 O haehmite is formed on Al and Al alloys by immersing in a boiling aqueous amine solution at 2-10 Kgms/cm<SP>2</SP> pressure and pH of 9-14. The amine may be mono, di or trietha@olamine monoethylamine or diethylamine container to attain the required pressure. The Al is first cleaned in a solution containing 6% vol. H 2 S@O@ 4 , 6% vol. HNO 3 , 3% vol. CrO 3 . The oxide coate @Al @ @ be treated with steam at 2-10 Kgms/cm<SP>2</SP> @ corrosion resistance.
GB1265268D 1969-03-08 1970-03-06 Expired GB1265268A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1769969 1969-03-08

Publications (1)

Publication Number Publication Date
GB1265268A true GB1265268A (en) 1972-03-01

Family

ID=11951029

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1265268D Expired GB1265268A (en) 1969-03-08 1970-03-06

Country Status (3)

Country Link
DE (1) DE2010367A1 (en)
FR (1) FR2039575A5 (en)
GB (1) GB1265268A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3314809C2 (en) * 1983-04-23 1985-09-12 Theodor Groz & Söhne & Ernst Beckert Nadelfabrik KG, 7470 Albstadt Punched knitting tool for knitting or warp knitting machines
DE8913293U1 (en) * 1989-11-10 1989-12-28 Theodor Groz & Söhne & Ernst Beckert Nadelfabrik KG, 7470 Albstadt Punched knitting tool for textile machines
FR2930023A1 (en) * 2008-04-09 2009-10-16 Valeo Systemes Thermiques Surface treatment method for motor vehicle's charge air cooler, involves carrying out hydrothermal treatment on components and brazing points to cover components and points with boehmite film and protect components and points from corrosion

Also Published As

Publication number Publication date
FR2039575A5 (en) 1971-01-15
DE2010367A1 (en) 1970-09-24

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Legal Events

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