EP0537063B1 - Procédé de dépôt électrophorétique de poudre métallique pour rechargememt de pièces par brasage-diffusion et bain utilisé - Google Patents

Procédé de dépôt électrophorétique de poudre métallique pour rechargememt de pièces par brasage-diffusion et bain utilisé Download PDF

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Publication number
EP0537063B1
EP0537063B1 EP92402728A EP92402728A EP0537063B1 EP 0537063 B1 EP0537063 B1 EP 0537063B1 EP 92402728 A EP92402728 A EP 92402728A EP 92402728 A EP92402728 A EP 92402728A EP 0537063 B1 EP0537063 B1 EP 0537063B1
Authority
EP
European Patent Office
Prior art keywords
coating
deposition
metal powder
agar
workpieces
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 - Lifetime
Application number
EP92402728A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0537063A1 (fr
Inventor
Marie-Josephe Aliette Bodin
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.)
Sochata
Original Assignee
Sochata
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 Sochata filed Critical Sochata
Publication of EP0537063A1 publication Critical patent/EP0537063A1/fr
Application granted granted Critical
Publication of EP0537063B1 publication Critical patent/EP0537063B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • C25D13/00—Electrophoretic coating characterised by the process
    • C25D13/02—Electrophoretic coating characterised by the process with inorganic material

Definitions

  • the invention relates to a method of electrophoretic deposition of metal powders. Said method is specially adapted for producing thick deposits used for reloading of parts, in particular made of nickel-based superalloy and in particular intended for aeronautical or turbomachine applications, said reloading being obtained using brazing-diffusion techniques.
  • the invention also relates to a product composition to be deposited in the form of a deposit mixture dispersed in an aqueous solution.
  • the object of the invention is to propose an alternative solution for setting up the supply before carrying out the heat treatment of brazing-diffusion which is carried out according to the techniques previously used and known per se, with a view to obtaining the reload sought.
  • GB-A-1 466 204 also discloses a process for producing an anti-corrosion coating on superalloy parts comprising an electrophoretic deposition of a mixture of aluminum powder and of a chromium alloy powder. aluminum obtained from a suspension of these powders in an organic dielectric based on isopropyl alcohol, nitromethane and zein and a diffusion heat treatment.
  • FR-A-2 308 704 describes a process for coating a metal surface by electrophoresis from an aqueous dispersion of aluminum powder and a thermosetting acrylic resin.
  • composition of the deposit mixture is Composition of the deposit mixture.
  • Anodic type deposition is carried out by placing the substrate in the anode position.
  • a stainless alloy cathode having the profile of a grid is used.
  • the inter-electrode distance is 10 to 80 mm.
  • the continuous electric field applied is between 5 and 30 V / cm.
  • the current density is 0.2 to 2 A / dm2
  • the deposition is carried out at ambient temperature, ie approximately 20 ° C.
  • Deposition thicknesses between 0.1 and 2 mm are thus obtained depending on the deposition time and the parameter values applied.
  • the deposits obtained are perfectly uniform and adherent.
  • the composition of the deposit is that of the electrophoretic bath.
  • the gross electrophoresis deposit is hydrated in a proportion of 20 to 40%.
  • An air drying treatment removes the water either after 24 hours at room temperature or 2 hours at 120 ° C.
  • the mechanical resistance of the deposits is sufficient to allow manipulation and the carrying out of a brazing-diffusion heat treatment which makes it possible to obtain the consolidation of the deposit and a reloading having the desired mechanical and metallurgical characteristics.
  • the operating conditions and the parameter values are known per se and determined for each application as a function of the particular material of the part to be recharged or substrate and of the filler material retained.
  • the process of electrophoresis deposition of metal powders for reloading of parts by heat treatment of brazing-diffusion can be used to effect reloading in repairing parts and / or in manufacturing new parts.
  • the part In the case where the part must be coated on two faces, when the electrophoretic deposition is carried out, the part is arranged between two shaped electrodes located at an equal distance, according to the criteria defined above.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Paints Or Removers (AREA)
EP92402728A 1991-10-09 1992-10-07 Procédé de dépôt électrophorétique de poudre métallique pour rechargememt de pièces par brasage-diffusion et bain utilisé Expired - Lifetime EP0537063B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9112409A FR2682401B1 (fr) 1991-10-09 1991-10-09 Procede de depot electrophoretique de poudre metallique pour rechargement de pieces par brasage-diffusion et bain utilise.
FR9112409 1991-10-09

Publications (2)

Publication Number Publication Date
EP0537063A1 EP0537063A1 (fr) 1993-04-14
EP0537063B1 true EP0537063B1 (fr) 1995-12-06

Family

ID=9417733

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92402728A Expired - Lifetime EP0537063B1 (fr) 1991-10-09 1992-10-07 Procédé de dépôt électrophorétique de poudre métallique pour rechargememt de pièces par brasage-diffusion et bain utilisé

Country Status (5)

Country Link
US (2) US5336382A (ja)
EP (1) EP0537063B1 (ja)
JP (1) JP2761330B2 (ja)
DE (1) DE69206568T2 (ja)
FR (1) FR2682401B1 (ja)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5976337A (en) * 1997-10-27 1999-11-02 Allison Engine Company Method for electrophoretic deposition of brazing material
FR2827311B1 (fr) * 2001-07-12 2003-09-19 Snecma Moteurs Procede de reparation locale de pieces revetues d'une barriere thermique
DE10335406A1 (de) * 2003-08-01 2005-02-17 Mtu Aero Engines Gmbh Verfahren zum Reparieren von Wärmedämmschichten mit lokalen Beschädigungen
JP6093523B2 (ja) * 2011-09-29 2017-03-08 電化皮膜工業株式会社 着色アルミニウム製品または着色アルミニウム合金製品の製造方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3067120A (en) * 1960-09-02 1962-12-04 Pearlstein Fred Addition agents for improving electrophoretic deposition of aluminum from organic suspensions
US3795601A (en) * 1971-12-27 1974-03-05 Ford Motor Co Electrodiffused protective coating system
FR2381591A1 (fr) * 1977-02-24 1978-09-22 Snecma Procede de liaison par brasage-diffusion de pieces en acier ou superalliage
EP0002109B1 (en) * 1977-11-15 1981-12-02 Imperial Chemical Industries Plc A method for the preparation of thin photoconductive films and of solar cells employing said thin photoconductive films
FR2511908A1 (fr) * 1981-08-26 1983-03-04 Snecma Procede de brasage-diffusion destine aux pieces en superalliages
FR2516526B1 (fr) * 1981-11-16 1987-05-22 Rhone Poulenc Spec Chim Compositions a base de gommes hydrosolubles, leur preparation et leur utilisation
DE3247756A1 (de) * 1982-12-23 1984-06-28 Herberts Gmbh, 5600 Wuppertal Waessriges ueberzugsmittel
AU3742185A (en) * 1983-11-22 1985-03-04 Udviklingsselskabet A F 31 10 1983 ApS Paint
US4869421A (en) * 1988-06-20 1989-09-26 Rohr Industries, Inc. Method of jointing titanium aluminide structures
GB0200819D0 (en) * 2002-01-15 2002-03-06 Cole Polytechnique Federale De Microscopy imaging apparatus and method for generating an image

Also Published As

Publication number Publication date
DE69206568D1 (de) 1996-01-18
DE69206568T2 (de) 1996-05-15
US5336382A (en) 1994-08-09
JPH05247690A (ja) 1993-09-24
FR2682401B1 (fr) 1993-11-26
FR2682401A1 (fr) 1993-04-16
JP2761330B2 (ja) 1998-06-04
EP0537063A1 (fr) 1993-04-14
US5411582A (en) 1995-05-02

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