FR3116066B1 - Deanodizing solution and process using such a solution - Google Patents

Deanodizing solution and process using such a solution Download PDF

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Publication number
FR3116066B1
FR3116066B1 FR2011494A FR2011494A FR3116066B1 FR 3116066 B1 FR3116066 B1 FR 3116066B1 FR 2011494 A FR2011494 A FR 2011494A FR 2011494 A FR2011494 A FR 2011494A FR 3116066 B1 FR3116066 B1 FR 3116066B1
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FR
France
Prior art keywords
solution
deanodizing
aluminum
relates
complexing agent
Prior art date
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Active
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FR2011494A
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French (fr)
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FR3116066A1 (en
Inventor
Jérôme Frayret
Joffrey Tardelli
Rémi Viroulaud
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Institut de Recherche Technologique Materiaux Metallurgie et Procedes IRT M2P
Original Assignee
Institut de Recherche Technologique Materiaux Metallurgie et Procedes IRT M2P
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Priority to FR2011494A priority Critical patent/FR3116066B1/en
Publication of FR3116066A1 publication Critical patent/FR3116066A1/en
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Publication of FR3116066B1 publication Critical patent/FR3116066B1/en
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    • 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
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/12—Light metals
    • C23G1/125—Light metals aluminium
    • 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
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

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

Abstract

L’invention concerner une solution de désanodisation pour la désanodisation d'une pièce en aluminium ou en alliage d'aluminium, ou d'une partie de celle-ci, la solution de désanodisation étant une solution aqueuse comprenant : un agent complexant fluorure apte à former un complexe avec l’aluminium oxydé ; et un agent d'attaque passivant phosphate apte à former un précipité avec l'aluminium métallique. Le rapport molaire entre l'agent d'attaque passivant phosphate et l'agent complexant fluorure est supérieur à 5, de préférence compris entre 5 et 20, de manière encore plus préféré compris entre 5 et 10. L’invention concerne également un procédé de désanodisation employant cette solution.The invention relates to a deanodizing solution for deanodizing an aluminum or aluminum alloy part, or a part thereof, the deanodizing solution being an aqueous solution comprising: a fluoride complexing agent capable of form a complex with the oxidized aluminum; and a phosphate passivating etchant capable of forming a precipitate with metallic aluminum. The molar ratio between the phosphate passivating attack agent and the fluoride complexing agent is greater than 5, preferably between 5 and 20, even more preferably between 5 and 10. The invention also relates to a process for deanodization using this solution.

FR2011494A 2020-11-09 2020-11-09 Deanodizing solution and process using such a solution Active FR3116066B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR2011494A FR3116066B1 (en) 2020-11-09 2020-11-09 Deanodizing solution and process using such a solution

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2011494 2020-11-09
FR2011494A FR3116066B1 (en) 2020-11-09 2020-11-09 Deanodizing solution and process using such a solution

Publications (2)

Publication Number Publication Date
FR3116066A1 FR3116066A1 (en) 2022-05-13
FR3116066B1 true FR3116066B1 (en) 2023-06-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
FR2011494A Active FR3116066B1 (en) 2020-11-09 2020-11-09 Deanodizing solution and process using such a solution

Country Status (1)

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FR (1) FR3116066B1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1480356A (en) * 1966-03-31 1967-05-12 Diversey France New deoxidizing-neutralizing composition for the treatment of aluminum alloys
FR2208994A1 (en) * 1972-12-05 1974-06-28 Paroy Ets Surface treatment of aluminium prior to anodising - using bath contg. phosphoric acid, fluorides and wetting agent
US4244792A (en) 1980-02-26 1981-01-13 Hixson Metal Finishing Method for stripping anodized aluminum and aluminum alloys
FR2560893B1 (en) * 1984-03-09 1986-09-12 Snecma CHEMICAL STRIPPING BATH FOR HOT-RESISTANT ALLOY PARTS
US5417819A (en) * 1994-01-21 1995-05-23 Aluminum Company Of America Method for desmutting aluminum alloys having a highly reflective surface
US5669980A (en) * 1995-03-24 1997-09-23 Atotech Usa, Inc. Aluminum desmut composition and process

Also Published As

Publication number Publication date
FR3116066A1 (en) 2022-05-13

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