EP0096753B1 - Procédé pour la production sans courant de couches anticorrosives sur des éléments de construction d'aluminium - Google Patents

Procédé pour la production sans courant de couches anticorrosives sur des éléments de construction d'aluminium Download PDF

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Publication number
EP0096753B1
EP0096753B1 EP83104742A EP83104742A EP0096753B1 EP 0096753 B1 EP0096753 B1 EP 0096753B1 EP 83104742 A EP83104742 A EP 83104742A EP 83104742 A EP83104742 A EP 83104742A EP 0096753 B1 EP0096753 B1 EP 0096753B1
Authority
EP
European Patent Office
Prior art keywords
aluminium
corrosion
grams per
per liter
zno
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
EP83104742A
Other languages
German (de)
English (en)
Other versions
EP0096753A1 (fr
Inventor
Wolfgang Prof. Dr.-Ing. Dipl.-Ing. Gruhl
Helmut Dr. Dipl.-Chem. Dölling
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.)
Vereinigte Aluminium Werke AG
Original Assignee
Vereinigte Aluminium Werke 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 Vereinigte Aluminium Werke AG filed Critical Vereinigte Aluminium Werke AG
Priority to AT83104742T priority Critical patent/ATE22934T1/de
Publication of EP0096753A1 publication Critical patent/EP0096753A1/fr
Application granted granted Critical
Publication of EP0096753B1 publication Critical patent/EP0096753B1/fr
Expired legal-status Critical Current

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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
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/31—Coating with metals

Definitions

  • the invention relates to a method for the currentless production of corrosion-protective layers on aluminum components, in particular on hollow body components with a honeycomb structure, and corrosion-protected aluminum components.
  • protective layers of zinc or zinc-containing alloys to aluminum. This can be done, for example, by metal spraying, by galvanizing or by roll cladding. Although the methods lead to good adhesion and mechanical resistance of the protective layer, they are relatively complex.
  • Chromating and phosphating processes are also known, by means of which top layers can be applied to aluminum.
  • solutions made from monozinc phosphate, phosphoric acid and fluoride are used.
  • the resulting layers are about 1-5 / um thick and soluble in acids and alkalis. They are therefore mainly used as a primer for paints and plastic coatings.
  • the layers are protected with a thin, clear methacrylate or cellulose acetate coating, since otherwise a corrosion attack is to be feared (see Wernicke, Pinner, Zurbrügg and Weiner, "The surface treatment of aluminum", p. 193).
  • Chromating layers are relatively easy to carry out, but do not offer reliable corrosion protection in a highly corrosive environment.
  • chemically produced oxide layers are only suitable as a base for organic coatings.
  • GB-A-1 439 183 discloses a process for the production of aluminum articles by soldering, the aluminum oxide being removed before the soldering treatment by a pickling bath and a coating of zinc or a zinc alloy being applied to the parts to be soldered. During the subsequent soldering, part of the zinc coating is melted and thus contributes to the soldered connection.
  • the object of the present invention is to develop a method for producing corrosion-protected components in which the coatings are relatively easy to manufacture, have high wear resistance and corrosion resistance.

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)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Coating With Molten Metal (AREA)
  • Building Environments (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)

Claims (4)

1. Procédé pour appliquer sans courant des couches de protection contre la corrosion sur des pièces d'aluminium qui contiennent, au moins aux soudures, 6 à 13% de Si et 0,01 à 2% de Bi ou 6 à 13% de Si et 0,001 à 1% de Be, ce procédé consistant en les stades opératoires suivants:
- on plonge les pièces d'aluminium dans une solution aqueuse de 100 à 300 g/I de NaOH et 10 à 30 g/I de ZnO pendant 1 à 5 minutes;
- on rinse et on sèche.
2. Procédé selon la revendication 1, caractérisé en ce que les pièces de construction en aluminium sont plongées dans une solution aqueuse de 100 à 200 g/I de NaOH et 15 à 20 g/I de ZnO.
3. Procédé selon la revendication 1 ou 2, caractérisé en ce que les pièces de construction en aluminium sont des pièces de construction du type corps creux à structure en nid d'abeilles.
4. Pièces de construction en aluminium protégées contre la corrosion, fabriquées selon l'une des revendications 1 à 3.
EP83104742A 1982-06-11 1983-05-13 Procédé pour la production sans courant de couches anticorrosives sur des éléments de construction d'aluminium Expired EP0096753B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83104742T ATE22934T1 (de) 1982-06-11 1983-05-13 Verfahren zur stromlosen erzeugung von korrosionsschuetzenden schichten auf aluminiumbauteilen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3222140 1982-06-11
DE3222140A DE3222140C2 (de) 1982-06-11 1982-06-11 Anwendung des Tauch-Verzinkungsverfahrens auf die Herstellung korrosionsgeschützter Aluminiumbauteile und korrosionsgeschütztes Aluminiumbauteil

Publications (2)

Publication Number Publication Date
EP0096753A1 EP0096753A1 (fr) 1983-12-28
EP0096753B1 true EP0096753B1 (fr) 1986-10-15

Family

ID=6165918

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83104742A Expired EP0096753B1 (fr) 1982-06-11 1983-05-13 Procédé pour la production sans courant de couches anticorrosives sur des éléments de construction d'aluminium

Country Status (5)

Country Link
EP (1) EP0096753B1 (fr)
JP (1) JPS596383A (fr)
AT (1) ATE22934T1 (fr)
DE (1) DE3222140C2 (fr)
NO (1) NO159025C (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62220837A (ja) * 1986-03-20 1987-09-29 Hitachi Electronics Eng Co Ltd 表面検査システム
EP1718785A2 (fr) * 2004-02-17 2006-11-08 Tyco Printed Circuit Group LP Procede de depot electrolytique sur aluminium

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2650886A (en) * 1951-01-19 1953-09-01 Aluminum Co Of America Procedure and bath for plating on aluminum
DE2143965C3 (de) * 1971-09-02 1981-11-26 Vereinigte Aluminium-Werke Ag, 5300 Bonn Verwendung eines Lotes zum flußmittelfreien Hartlöten von Aluminiumwerkstoffen in Schutzgas, Inertgas oder Vakuum
FR2201350B2 (fr) * 1972-09-26 1977-08-26 Chausson Usines Sa
US3982055A (en) * 1974-07-25 1976-09-21 Eltra Corporation Method for zincating aluminum articles

Also Published As

Publication number Publication date
DE3222140C2 (de) 1984-05-30
JPS596383A (ja) 1984-01-13
NO832077L (no) 1983-12-12
JPH032952B2 (fr) 1991-01-17
NO159025B (no) 1988-08-15
ATE22934T1 (de) 1986-11-15
EP0096753A1 (fr) 1983-12-28
DE3222140A1 (de) 1983-12-15
NO159025C (no) 1988-11-23

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