FR2992979A1 - PROCESSING PROCESS WITH ANODIZATION OF ALUMINUM ALLOYS CONTAINING COPPER - Google Patents

PROCESSING PROCESS WITH ANODIZATION OF ALUMINUM ALLOYS CONTAINING COPPER Download PDF

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Publication number
FR2992979A1
FR2992979A1 FR1256393A FR1256393A FR2992979A1 FR 2992979 A1 FR2992979 A1 FR 2992979A1 FR 1256393 A FR1256393 A FR 1256393A FR 1256393 A FR1256393 A FR 1256393A FR 2992979 A1 FR2992979 A1 FR 2992979A1
Authority
FR
France
Prior art keywords
anode
bath
containing copper
anodization
oxidizing compound
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.)
Granted
Application number
FR1256393A
Other languages
French (fr)
Other versions
FR2992979B1 (en
Inventor
Emmanuel Rocca
Joffrey Tardelli
Myriam Augros
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.)
Universite de Lorraine
Safran Landing Systems SAS
Original Assignee
Messier Bugatti Dowty SA
Universite de Lorraine
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 Messier Bugatti Dowty SA, Universite de Lorraine filed Critical Messier Bugatti Dowty SA
Priority to FR1256393A priority Critical patent/FR2992979B1/en
Priority to US13/933,988 priority patent/US20140008236A1/en
Priority to EP13174807.1A priority patent/EP2682502B1/en
Publication of FR2992979A1 publication Critical patent/FR2992979A1/en
Application granted granted Critical
Publication of FR2992979B1 publication Critical patent/FR2992979B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • C25D11/16—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
    • C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
    • C25D11/08—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing inorganic acids

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • ing And Chemical Polishing (AREA)

Abstract

L'invention concerne un procédé de traitement d'une pièce (50) en alliage d'aluminium contenant du cuivre en proportion massique de 0,1% à 10%. Le procédé comprend les étapes suivantes : (a) On fournit la pièce (50), (b) On effectue un prétraitement électrochimique de la pièce (50) dans un premier bain (10) d'électrolyte contenant de l'acide sulfurique et un premier composé oxydant, une première différence de potentiel DeltaV1 étant établie entre une première cathode (11) et une première anode trempées dans le premier bain (10), la pièce (50) étant la première anode, la concentration en ce premier composé oxydant étant telle que le potentiel de corrosion de cet alliage d'aluminium est supérieur à +100 mV par rapport à l'Electrode Normale à Hydrogène, (c) Après l'étape (b), on effectue une anodisation de la pièce (50) dans un second bain (20) d'électrolyte contenant de l'acide sulfurique et un second composé oxydant, une seconde différence de potentiel DeltaV2 étant établie entre une seconde cathode (21) et une seconde anode trempées dans le second bain, la pièce (50) étant la seconde anode.The invention relates to a method for treating an aluminum alloy part (50) containing copper in a mass proportion of 0.1% to 10%. The process comprises the following steps: (a) The workpiece (50) is provided; (b) Electrochemical pretreatment of the workpiece (50) is performed in a first electrolyte bath (10) containing sulfuric acid and a first oxidizing compound, a first DeltaV1 potential difference being established between a first cathode (11) and a first anode immersed in the first bath (10), the piece (50) being the first anode, the concentration of this first oxidizing compound being such that the corrosion potential of this aluminum alloy is greater than +100 mV with respect to the Normal Hydrogen Electrode, (c) After step (b), the piece (50) is anodized in a second electrolyte bath (20) containing sulfuric acid and a second oxidizing compound, a second DeltaV2 potential difference being established between a second cathode (21) and a second anode dipped in the second bath; ) being the second anode.

FR1256393A 2012-07-04 2012-07-04 PROCESSING PROCESS WITH ANODIZATION OF ALUMINUM ALLOYS CONTAINING COPPER Active FR2992979B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR1256393A FR2992979B1 (en) 2012-07-04 2012-07-04 PROCESSING PROCESS WITH ANODIZATION OF ALUMINUM ALLOYS CONTAINING COPPER
US13/933,988 US20140008236A1 (en) 2012-07-04 2013-07-02 Anodization treatment method for aluminum alloys containing cooper
EP13174807.1A EP2682502B1 (en) 2012-07-04 2013-07-02 Treatment process comprising the anodizing of copper-containing aluminium alloys

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1256393A FR2992979B1 (en) 2012-07-04 2012-07-04 PROCESSING PROCESS WITH ANODIZATION OF ALUMINUM ALLOYS CONTAINING COPPER

Publications (2)

Publication Number Publication Date
FR2992979A1 true FR2992979A1 (en) 2014-01-10
FR2992979B1 FR2992979B1 (en) 2014-08-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
FR1256393A Active FR2992979B1 (en) 2012-07-04 2012-07-04 PROCESSING PROCESS WITH ANODIZATION OF ALUMINUM ALLOYS CONTAINING COPPER

Country Status (3)

Country Link
US (1) US20140008236A1 (en)
EP (1) EP2682502B1 (en)
FR (1) FR2992979B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111663163A (en) * 2019-03-08 2020-09-15 核工业理化工程研究院 Anticorrosion treatment method of 2A50 aluminum alloy and application thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR897693A (en) * 1942-12-15 1945-03-28 Improvements to anodic oxidation processes for metal surfaces
US4336113A (en) * 1981-06-26 1982-06-22 American Hoechst Corporation Electrolytic graining of aluminum with hydrogen peroxide and nitric or hydrochloric acid
US5362569A (en) * 1993-03-22 1994-11-08 Bauman Albert J Anodizing and duplex protection of aluminum copper alloys
US5635084A (en) * 1994-05-20 1997-06-03 University Of Southern California Method for creating a corrosion-resistant surface on an aluminum-copper alloy

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB398825A (en) * 1932-01-16 1933-09-18 Philip Ray Coursey Improvements in the electrolytic production of insulating layers on metals
GB1215314A (en) * 1967-11-22 1970-12-09 Acorn Anodising Company Ltd Improvements in or relating to the anodising of aluminium and its alloys
US3666638A (en) * 1970-04-21 1972-05-30 Sidney Levine Process for anodizing aluminum materials
CA1106795A (en) * 1975-06-27 1981-08-11 Toshihiko Sato Coloured pattern on anodized aluminium article with shade differences
US4263113A (en) * 1980-06-02 1981-04-21 Sprague Electric Company Electrochemical removal of surface copper from aluminum foil
US5814682A (en) * 1996-06-14 1998-09-29 Rusin; Richard P. Method of luting a provisional prosthetic device using a glass ionomer cement system and kit therefor
CN1152632A (en) * 1996-10-17 1997-06-25 周国桢 One stage method pretreating liquid for aluminium material oxidation pretreatment
ITTO20010149A1 (en) * 2001-02-20 2002-08-20 Finmeccanica S P A Alenia Aero LOW ECOLOGICAL ANODIZATION PROCEDURE OF A PIECE OF ALUMINUM OR ALUMINUM ALLOYS.
US6475368B2 (en) * 2001-03-07 2002-11-05 Kemet Electronics Corporation Method of aqueous anodizing aluminum substrates of solid capacitors
US20040050709A1 (en) * 2002-09-17 2004-03-18 The Boeing Company Accelerated sulfuric acid and boric sulfuric acid anodize process
US7022202B2 (en) * 2004-01-08 2006-04-04 Mareiners, Llc Method for applying images to surfaces
JP2008112877A (en) * 2006-10-31 2008-05-15 Nichicon Corp Manufacturing method of electrode foil for electrolytic capacitor
IT1398287B1 (en) * 2009-09-18 2013-02-22 Unical A G S P A METHOD OF ANODIZING METAL ALLOYS, PARTICULARLY FOR HEAT EXCHANGERS IN ALUMINUM ALLOYS AND SIMILAR FOR CONDENSING BOILERS.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR897693A (en) * 1942-12-15 1945-03-28 Improvements to anodic oxidation processes for metal surfaces
US4336113A (en) * 1981-06-26 1982-06-22 American Hoechst Corporation Electrolytic graining of aluminum with hydrogen peroxide and nitric or hydrochloric acid
US5362569A (en) * 1993-03-22 1994-11-08 Bauman Albert J Anodizing and duplex protection of aluminum copper alloys
US5635084A (en) * 1994-05-20 1997-06-03 University Of Southern California Method for creating a corrosion-resistant surface on an aluminum-copper alloy

Also Published As

Publication number Publication date
EP2682502A1 (en) 2014-01-08
FR2992979B1 (en) 2014-08-08
US20140008236A1 (en) 2014-01-09
EP2682502B1 (en) 2015-09-16

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