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EP2955250B1 - Procédé destiné au revêtement d'un substrat - Google Patents

Procédé destiné au revêtement d'un substrat Download PDF

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Publication number
EP2955250B1
EP2955250B1 EP15169420.5A EP15169420A EP2955250B1 EP 2955250 B1 EP2955250 B1 EP 2955250B1 EP 15169420 A EP15169420 A EP 15169420A EP 2955250 B1 EP2955250 B1 EP 2955250B1
Authority
EP
European Patent Office
Prior art keywords
content
electrolyte
aqueous electrolyte
plasma
substrate
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.)
Active
Application number
EP15169420.5A
Other languages
German (de)
English (en)
Other versions
EP2955250A1 (fr
Inventor
Jürgen Schmidt
Angelika Henning
Ines Hirsch
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.)
Innovent eV Technologieentwicklung
Original Assignee
Innovent eV Technologieentwicklung
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 Innovent eV Technologieentwicklung filed Critical Innovent eV Technologieentwicklung
Publication of EP2955250A1 publication Critical patent/EP2955250A1/fr
Application granted granted Critical
Publication of EP2955250B1 publication Critical patent/EP2955250B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • C25D11/026—Anodisation with spark discharge
    • 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
    • C25D11/16—Pretreatment, e.g. desmutting
    • 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
    • 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
    • C25D11/36—Phosphatising
    • 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
    • C25D11/024—Anodisation under pulsed or modulated current or potential
    • 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

Definitions

  • From the DE 101 27 770 A1 is a method for producing corrosion protection layers on surfaces of magnesium or magnesium alloys known, in which the components to be provided with the protective layer as an electrode, preferably as an anode, are switched and oxidized in an electrolyte bath.
  • the electrolyte bath also contains at least one compound of vanadium and / or molybdenum and / or manganese.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Claims (10)

  1. Procédé de revêtement d'un substrat comprenant un métal léger, c'est-à-dire un métal ou un alliage ayant une densité inférieure à 5 g/cm3, et/ou du molybdène et/ou du tantale, la couche étant formée par oxydation anodique de chimie au plasma dans un électrolyte aqueux, l'électrolyte aqueux comprenant :
    - de l'heptamolybdate d'ammonium ou de l'hexahydrate d'heptamolybdate d'ammonium,
    - du citrate de fer ou du citrate d'ammonium-fer (III),
    - un autre complexant.
  2. Procédé selon la revendication 1, dans lequel au moins un des composés éthylène-diamine, acide citrique, tétraacétate d'éthylène-diamine, acide diéthylène-triamine-pentaacétique et triéthanolamine est utilisé en tant que complexant supplémentaire.
  3. Procédé selon l'une quelconque des revendications 1 ou 2, dans lequel l'électrolyte aqueux comprend en outre au moins un phosphate, carbonate, borate ou silicate.
  4. Procédé selon la revendication 3, dans lequel du dihydrogénophosphate de potassium est utilisé en tant que phosphate ou du carbonate de sodium en tant que carbonate.
  5. Procédé selon l'une quelconque des revendications précédentes, dans lequel l'électrolyte aqueux comprend en outre de l'eau ammoniaquée.
  6. Procédé selon l'une quelconque des revendications précédentes, dans lequel l'électrolyte aqueux contient en outre du tungstate de sodium.
  7. Procédé selon les revendications précédentes, dans lequel, dans l'électrolyte aqueux :
    - une proportion de 25 g/l à 30 g/l de dihydrogénophosphate de potassium,
    - une proportion de 15 g/l à 20 g/l de carbonate de sodium,
    - une proportion de 17,5 ml/l à 37,5 ml/l d'eau ammoniaquée,
    - une proportion de 5 g/l à 15 g/l d'hexahydrate d'heptamolybdate d'ammonium,
    - une proportion de 2 g/l à 10 g/l de tungstate de sodium,
    - une proportion de 25 m/l à 50 ml/l d'éthylène-diamine et
    - une proportion de 10 g/l à 25 g/l de citrate d'ammonium-fer (III) sont utilisées.
  8. Procédé selon l'une quelconque des revendications précédentes, dans lequel l'oxydation anodique de chimie au plasma est réalisée avec les paramètres suivantes :
    - un courant continu ou un courant alternatif ayant une densité de courant de 0,05 A/dm2 à 15 A/dm2,
    - des tensions de 200 V à 500 V,
    - une température d'électrolyte de 15 °C à 45 °C,
    - un pH de l'électrolyte de 9,0 à 11,0, notamment de 10,2,
    - une conductivité de l'électrolyte de 20 mS/cm à 40 mS/cm, notamment de 33,7 mS/cm.
  9. Procédé selon la revendication 8, dans lequel le courant continu ou le courant alternatif est pulsé avec une fréquence de 10 Hz à 2 000 Hz.
  10. Procédé selon l'une quelconque des revendications précédentes, dans lequel, après l'oxydation anodique de chimie au plasma, une couche transparente nanométrique est déposée sur le substrat par dépôt chimique en phase vapeur.
EP15169420.5A 2014-06-13 2015-05-27 Procédé destiné au revêtement d'un substrat Active EP2955250B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014211385.7A DE102014211385B3 (de) 2014-06-13 2014-06-13 Verfahren zur Beschichtung eines Substrats

Publications (2)

Publication Number Publication Date
EP2955250A1 EP2955250A1 (fr) 2015-12-16
EP2955250B1 true EP2955250B1 (fr) 2017-11-01

Family

ID=53267262

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15169420.5A Active EP2955250B1 (fr) 2014-06-13 2015-05-27 Procédé destiné au revêtement d'un substrat

Country Status (2)

Country Link
EP (1) EP2955250B1 (fr)
DE (1) DE102014211385B3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110284172A (zh) * 2018-03-08 2019-09-27 华孚精密科技(马鞍山)有限公司 铝合金微弧氧化电解液、方法及其产品
DE102023109420A1 (de) 2023-04-14 2024-10-17 Verein zur Förderung von Innovationen durch Forschung, Entwicklung und Technologietransfer e.V. (Verein INNOVENT e.V.) Verfahren zum Beschichten eines Substrats, Bauteil und dessen Verwendung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1439933A (en) * 1972-05-23 1976-06-16 Kape J M Sulphuric acid anodising processes
GB1379798A (en) * 1972-07-31 1975-01-08 Honny Chemicals Co Ltd Colouring of aluminium and aluminium alloys by electrolysis
DE4116910A1 (de) 1991-05-21 1992-11-26 Jenoptik Jena Gmbh Verfahren zur erzeugung oxidkeramischer oberflaechenschichten auf leichtmetall-gusslegierungen
DE10127770A1 (de) * 2001-06-07 2002-12-12 Volkswagen Ag Verfahren zur Erzeugung von Korrosionsschutzschichten auf Oberflächen aus Magnesium oder Magnesiumlegierungen
JP4125765B2 (ja) * 2006-09-28 2008-07-30 日本パーカライジング株式会社 金属のセラミックス皮膜コーティング方法およびそれに用いる電解液ならびにセラミックス皮膜および金属材料
DE102011055644B4 (de) 2011-11-23 2013-05-29 Verein zur Förderung von Innovationen durch Forschung, Entwicklung und Technologietransfer e.V. (Verein INNOVENT e.V.) Verfahren zur Erzeugung einer schwarzen oxidkeramischen Oberflächenschicht auf einem Bauteil aus einer Leichtmetalllegierung
DE102012210807A1 (de) * 2012-06-26 2014-01-02 Innovent E.V. Verfahren zur Erzeugung einer bakteriziden Schicht

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2955250A1 (fr) 2015-12-16
DE102014211385B3 (de) 2015-08-06

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