EP4013908B1 - Procédé de revêtement d'une pièce de turbomachine - Google Patents

Procédé de revêtement d'une pièce de turbomachine Download PDF

Info

Publication number
EP4013908B1
EP4013908B1 EP20754794.4A EP20754794A EP4013908B1 EP 4013908 B1 EP4013908 B1 EP 4013908B1 EP 20754794 A EP20754794 A EP 20754794A EP 4013908 B1 EP4013908 B1 EP 4013908B1
Authority
EP
European Patent Office
Prior art keywords
potential difference
voltage
paint
equal
phase
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
EP20754794.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP4013908A1 (fr
Inventor
Stéphane KNITTEL
Léa Rébecca GANI
Florence Ansart
Romain NOIVILLE
Pierre-Louis Taberna
Julien WAGNER
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.)
Safran Aircraft Engines SAS
Centre National de la Recherche Scientifique CNRS
Universite Toulouse III Paul Sabatier
Original Assignee
Safran Aircraft Engines SAS
Centre National de la Recherche Scientifique CNRS
Universite Toulouse III Paul Sabatier
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 Safran Aircraft Engines SAS, Centre National de la Recherche Scientifique CNRS, Universite Toulouse III Paul Sabatier filed Critical Safran Aircraft Engines SAS
Publication of EP4013908A1 publication Critical patent/EP4013908A1/fr
Application granted granted Critical
Publication of EP4013908B1 publication Critical patent/EP4013908B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • C25D13/18—Electrophoretic coating characterised by the process using modulated, pulsed, or reversing current
    • 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
    • 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
    • C25D13/12—Electrophoretic coating characterised by the process characterised by the article coated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
    • F01D5/288—Protective coatings for blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/30—Manufacture with deposition of material
    • F05D2230/31—Layer deposition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/90—Coating; Surface treatment

Definitions

  • the present invention relates to a process for coating a turbomachine part with a paint, for example with an anti-corrosion paint, by implementing an electrophoresis deposition step.
  • High mechanical strength steels such as Maraging 250 or ML340 can be used to form turbomachine parts. These steels can, however, be susceptible to corrosion in operation.
  • first voltage stabilization phase and “second voltage stabilization phase” will be respectively designated in the following by “first phase” and “second phase”.
  • ratio R ratio of the first phase] / [duration of the first phase + duration of the second phase]
  • the invention makes it possible to obtain a homogeneous and dense coating, conferring for example satisfactory protection against corrosion.
  • the invention makes it possible, in particular, to avoid the phenomenon of “bubbling” of the electrolyte associated with the electrolysis of water which can be encountered when a direct voltage is imposed during electrophoresis. This “bubbling” phenomenon leads to a much less homogeneous coating and therefore significantly less efficient.
  • the invention is based on the implementation of an electrophoresis technique with specific electrical parameters, which makes it possible to obtain the desired coating in a simple manner.
  • the electrophoresis technique used in the invention also makes it possible to better control the thickness of the coating deposited compared to projection using a paint gun. It is therefore of particular interest for coating parts with complex geometry.
  • the absolute value of the first potential difference is less than or equal to 15V.
  • the absolute value of the first potential difference can be less than or equal to 10V, for example less than or equal to 7V.
  • the absolute value of the first potential difference can be between 2V and 15V, for example example between 2V and 10V, for example between 5V and 10V, for example between 5V and 7V or between 2V and 7V.
  • the absolute value of the second potential difference is less than or equal to 5V.
  • the ratio R is between 1/10 and 1/3.
  • the ratio R can be between 1/10 and 1/4.
  • the ratio R can still be between 1/6 and 1/3 or between 1/6 and 1/4.
  • the pulsed voltage cycles are repeated with a frequency less than or equal to 1 kHz during electrophoretic deposition.
  • Limiting the repetition frequency of the pulsed voltage cycles is advantageous in order to increase the relaxation time of the system between two successive first phases, which makes it possible to further improve the homogeneity of the coating obtained.
  • said frequency may be less than or equal to 100 Hz, or even less than or equal to 10 Hz.
  • the paint is inorganic.
  • the paint is an anti-corrosion paint.
  • the part is an aircraft turbomachine part.
  • the part 1 to be coated is immersed in a bath of a paint 10 which is for example an anti-corrosion paint.
  • a paint 10 which is for example an anti-corrosion paint.
  • the surface of the part 1 intended to be coated with the paint may have been prepared beforehand in a conventional manner by a chemical and/or mechanical stripping step.
  • Part 1 may be made of metallic material, for example aluminum or aluminum alloy, steel or superalloy based on nickel or cobalt.
  • Part 1 may be an aircraft turbomachine part.
  • Part 1 may be a turbomachine blade, such as a turbine blade or a compressor blade, a turbine shaft or part of a turbine shaft, a compressor shaft or part of a compressor shaft.
  • Part 1 constitutes an electrode which is connected to a first terminal of a voltage generator G.
  • a counter-electrode 20 is present facing the surface of the part 1 to be coated and is also immersed in the paint bath 10.
  • the counter-electrode 20 is connected to a second terminal of the voltage generator G, different from the first thick headed.
  • the generator G imposes specific pulsed voltage cycles between the part 1 and the counter electrode 20 which will be illustrated in more detail below in connection with the figures 3 and 4 .
  • a stirring means (not shown) may be present in the paint bath 10 in order to ensure mixing of this bath during deposition.
  • a commercial paint known per se, can be used.
  • the paint 10 is typically in the form of a suspension comprising solid particles 11 dispersed in a liquid medium.
  • the paint 10 can be free of chromium at the oxidation state +VI in order to be compatible with the “Registration, evaluation and authorization of chemicals” (“REACH”) regulation.
  • Paint 10 may contain chromium at oxidation state +III.
  • SERMETEL W® the paint marketed under the reference SERMETEL W® by the company PRAXAIR.
  • the particles 11 of the paint 10 may comprise one or more pigments, for example one or more anti-corrosion pigments in the case of an anti-corrosion paint.
  • These pigments are typically chosen from: metal phosphates, for example zinc phosphate, metal chromates, such as magnesium chromate, or halozirconates, or from mixtures of such compounds.
  • Electrically conductive particles, such as aluminum particles, can be added to the pigment(s). The addition of these conductive particles makes it possible to give layer 6 an electrically conductive character, which makes it possible to avoid a self-limiting effect of deposition by electrophoresis and to be able, if desired, to deposit a layer 6 relatively thick.
  • the treated surface can become more and more insulating as layer 6 is deposited, slowing down or even naturally stopping its formation.
  • the thickness e of the deposited layer 6 may be greater than or equal to 35 ⁇ m, for example between 35 ⁇ m and 70 ⁇ m.
  • the average size D50 of the particles 11 of the paint 10, possibly agglomerated, may be less than or equal to 10 ⁇ m, for example between 0.1 ⁇ m and 10 ⁇ m.
  • the liquid medium of the paint can typically include a binder and a solvent.
  • the paint 10 may optionally also comprise one or more additives making it possible to adjust its properties, such as its viscosity or the stability of the suspension.
  • the generator G imposes a variable potential difference between the part 1 and the counter-electrode 20. Due to the application of an electric field between the part 1 and the counter-electrode 20, the particles 11 of electrically charged paint moves and is deposited on part 1 in order to obtain layer 6.
  • the example illustrated in figures 1 and 2 concerns the case where part 1 is negatively charged during the first phases of the tension cycles, particles 11 being positively charged. The particles 11 are thus deposited on the part 1 during the first phases of the tension cycles. However, we do not depart from the scope of the invention if the part 1 is positively charged during the first phases of the tension cycles and the particles negatively charged.
  • the particles 11 when they are positively charged, they can have a zeta potential greater than or equal to 1 mV, for example greater than or equal at 10 mV.
  • the zeta potential of the particles 11 can typically be between 1 mV and 100 mV, for example between 10 mV and 30 mV.
  • each voltage cycle C1 comprises a first positive voltage stabilization phase P1 during which a first constant potential difference DDP1 is imposed between the part 1 and the counter electrode 20.
  • the potential differences correspond to the difference following: [(electric potential of part 1) - (electric potential of counter electrode 20)].
  • the first potential difference DDP1 is between 0.1V and 30V, for example between 5V and 7V.
  • Each voltage cycle C1 further comprises a second voltage stabilization phase P2 during which a second constant potential difference DDP2 is imposed between the part 1 and the counter electrode 20.
  • Each voltage cycle C1 comprises a single first phase P1 and a single second phase P2.
  • the absolute value of the second potential difference DDP2 is less than the first potential difference DDP1.
  • the absolute value of the second potential difference DDP2 may be less than or equal to half of the first potential difference DDP1.
  • the absolute value of the second potential difference DDP2 can be less than or equal to 5V.
  • a second negative potential difference DDP2 This case corresponds to the application of an alternating voltage between part 1 and counter electrode 20 during electrophoresis deposition. Alternatively, we could have a zero or positive DDP2 potential difference.
  • the relative durations of the first phases P1 and the second phases P2 are controlled within the framework of the invention.
  • the ratio R which corresponds to the ratio T1 / [T1 + T2], is fixed at a predetermined value between 1/10 and 1/2, where T1 designates the duration of the first phase P1 and T2 the duration of the second phase P2.
  • the ratio R is, for example, between 1/6 and 1/4.
  • the C1 cycles of pulsed voltage can be repeated periodically during electrophoretic deposition as illustrated.
  • the repetition frequency of the pulsed voltage cycles may be less than or equal to 1 kHz, for example less than or equal to 100 Hz, for example less than or equal to 5 Hz.
  • This frequency can be between 0.1 Hz and 1kHz, for example between 0.1 Hz and 100 Hz, for example between 1 Hz and 100 Hz, for example between 1 Hz and 10 Hz, or even between 1 Hz and 5 Hz.
  • C1 pulsed voltage cycles can be applied for a duration greater than or equal to 1 minute. This duration may be less than or equal to 30 minutes, for example less than or equal to 10 minutes. This duration can be between 1 minute and 30 minutes, for example between 1 minute and 10 minutes.
  • each voltage cycle C10 comprises a first negative voltage stabilization phase P10 during which a first constant potential difference DDP10 is imposed between part 1 and counter-electrode 20.
  • the absolute value of the potential difference DDP10 checks the values indicated above.
  • Each voltage cycle C10 further comprises a second voltage stabilization phase P20 during which a second constant potential difference DDP20 is imposed between the part 1 and the counter electrode 20.
  • This second potential difference DDP20 verifies the conditions mentioned above.
  • the durations T10 and T20 of the stabilization phases P10 and P20 verify, for their part, the same relative ratio condition as T1 and T2.
  • the R ratio can vary between 1/10 and 1/3. It will be noted that for relatively high values of the R ratio, close to 1/2 and outside the invention, it may be preferable to implement first potential differences limited in absolute value in order to improve the homogeneity of the layer formed.
  • the method of the invention can be implemented for the coating of a blade 21 of a turbomachine, comprising for example a foot 22, a blade 24 and a head 26, like that illustrated very schematically on the figure 5 .
  • the invention obviously applies to other types of turbomachine parts, such as those listed above for example.
  • An anti-corrosion paint was deposited using a two-electrode electrophoretic system comprising a platinum electrode and a 15CDV6 steel electrode.
  • the anti-corrosion paint deposited was the paint marketed under the reference SERMETEL W ® by the company PRAXAIR.
  • a first test according to the invention was carried out by imposing a succession of pulsed voltage cycles, each pulsed voltage cycle had a first positive voltage stabilization phase at 10V and a second voltage stabilization phase at 0V.
  • the part to be coated was positively charged during the first phases.
  • Each pulsed voltage cycle had an R ratio of 1/3.
  • the voltage cycles were repeated at a frequency of 1 Hz and electrophoretic deposition was carried out for a period of 5 minutes.
  • Figure 6 is a photograph showing the appearance of the coating obtained.

Landscapes

  • 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)
  • Paints Or Removers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
EP20754794.4A 2019-08-12 2020-07-30 Procédé de revêtement d'une pièce de turbomachine Active EP4013908B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1909158A FR3099935B1 (fr) 2019-08-12 2019-08-12 Procédé de revêtement d’une pièce de turbomachine
PCT/FR2020/051406 WO2021028628A1 (fr) 2019-08-12 2020-07-30 Procédé de revêtement d'une pièce de turbomachine

Publications (2)

Publication Number Publication Date
EP4013908A1 EP4013908A1 (fr) 2022-06-22
EP4013908B1 true EP4013908B1 (fr) 2024-06-12

Family

ID=68807074

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20754794.4A Active EP4013908B1 (fr) 2019-08-12 2020-07-30 Procédé de revêtement d'une pièce de turbomachine

Country Status (5)

Country Link
US (1) US20220290320A1 (zh)
EP (1) EP4013908B1 (zh)
CN (1) CN114302980B (zh)
FR (1) FR3099935B1 (zh)
WO (1) WO2021028628A1 (zh)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT266047B (de) * 1966-04-04 1968-11-11 Peter Stoll Lackfabrik Verfahren zur Elektrobeschichtung von elektrisch leitenden Materialoberflächen
WO2002090029A1 (en) * 2001-05-08 2002-11-14 Koninklijke Philips Electronics N.V. Method for a removal of cathode depositions by means of bipolar pulses
DE10325656C5 (de) * 2003-06-06 2007-12-27 Eisenmann Anlagenbau Gmbh & Co. Kg Elektrophoretische Tauchlackieranlage
WO2005004099A1 (en) * 2003-07-03 2005-01-13 Koninklijke Philips Electronics N.V. An electrophoretic display with reduction of remnant voltages by selection of characteristics of inter-picture potential differences
CN102154675B (zh) * 2011-03-07 2012-07-25 南京工业大学 一种金属陶瓷复合膜的制备方法
CN105765006B (zh) * 2013-11-18 2019-01-25 巴斯夫涂料有限公司 使用含Bi(III)组合物浸涂导电基底的两段法
RU2678347C2 (ru) * 2014-01-29 2019-01-28 Сафран Эркрафт Энджинз Способ локального ремонта поврежденного теплового барьера
FR3073866B1 (fr) * 2017-11-21 2019-11-29 Safran Helicopter Engines Procede de fabrication d'une barriere thermique sur une piece d'une turbomachine

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
HEATHER MCCRABB ET AL: "Pulse Electric Fields for EPD of Thermal Barrier Coatings", KEY ENGINEERING MATERIALS, vol. 507, 1 March 2012 (2012-03-01), pages 21 - 25, XP055678286, DOI: 10.4028/www.scientific.net/KEM.507.21 *
KELL ET AL: "Electrophoretic deposition of thermal barrier coatings by the faradayic process", MATERIALS SCIENCE & TECHNOLOGY 2008 CONFERENCE AND EXHIBITION, MS&T'08 : OCTOBER 5 - 9, 2008; VOL. 4, MATERIALS SCIENCE & TECHNOLOGY, US, vol. 4, 1 January 2008 (2008-01-01), pages 2197 - 2203, XP009519483, ISBN: 978-1-60560-621-7, DOI: 10.1002/9780470456224.CH18 *

Also Published As

Publication number Publication date
US20220290320A1 (en) 2022-09-15
WO2021028628A1 (fr) 2021-02-18
FR3099935B1 (fr) 2021-09-10
CN114302980A (zh) 2022-04-08
CN114302980B (zh) 2024-05-03
EP4013908A1 (fr) 2022-06-22
FR3099935A1 (fr) 2021-02-19

Similar Documents

Publication Publication Date Title
Yang et al. Improvement of corrosion protective performance of organic coating on low carbon steel by PEO pretreatment
US8192801B2 (en) Self-deposited coatings on magnesium alloys
EP4013908B1 (fr) Procédé de revêtement d'une pièce de turbomachine
CN102510884A (zh) 形成漆膜的方法和漆膜
WO2010101390A2 (en) Power supply for anodizing, anodizing method, and anodized film
EP3077127B1 (fr) Primaire d'adherence pour peinture
EP3137656B1 (fr) Dispositif destine a la mise en oeuvre d'un traitement d'anodisation et traitement d'anodisation
FR3011853A1 (zh)
FR3031989A1 (fr) Procede de traitement d'une piece et piece comportant un revetement
CA2933952A1 (fr) Procede de fabrication d'une piece revetue d'un revetement protecteur
WO2023073310A1 (fr) Procede de formation d'un revetement de protection cathodique sur une piece de turbomachine
EP0704558B1 (fr) Cellule d'électrodéposition en continu d'alliages métalliques
US9512539B2 (en) Process for removing a coating from workpieces
CA3014296C (fr) Elaboration d'un traitement anti-corrosion par voie sol-gel
FR3077303A1 (fr) Procede d'anodisation et systeme associe
CN103741126B (zh) 一种镁合金表面自分层复合涂层的制备方法
Van Phuong et al. Deposition and Characterization of Electrophoretic Paint on AZ31 Magnesium Alloy
Cinotti et al. Silver electrodeposition from ionic liquids: coatings morphology and mass transport issues
WO2017085279A1 (fr) Revêtement anti-corrosion à base de nickel et son procédé d'obtention
GB2539965A (en) A surface treatment for enhanced resistance to corrosion and synergistic wear and corrosion (tribocorrosion) degradation
FR3115717A1 (fr) Revêtement à base de pyrrole pour la protection contre la corrosion
Zhurinov et al. Effect of Nickel and Molybdenum on the Condition of Oxide-Zirconium Coatings on Steel Base
FR3110605A1 (fr) Procede et installation de traitement de pieces metalliques par oxydation micro-arc
Vignal et al. MICROSTRUCTURE AND CORROSION BEHAVIOUR OF COBALT-MOLYBDENUM COATINGS ELECTRODEPOSITED ON PURE COBALT.
FR2782097A1 (fr) Films contenant des vesicules lamellaires, materiaux recouverts de ces films et leur procede d'obtention par voie electrochimique

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20220308

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20240319

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP