EP2330233A1 - Procédé de fabrication d'un revêtement protecteur sur un substrat métallique - Google Patents

Procédé de fabrication d'un revêtement protecteur sur un substrat métallique Download PDF

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Publication number
EP2330233A1
EP2330233A1 EP09425494A EP09425494A EP2330233A1 EP 2330233 A1 EP2330233 A1 EP 2330233A1 EP 09425494 A EP09425494 A EP 09425494A EP 09425494 A EP09425494 A EP 09425494A EP 2330233 A1 EP2330233 A1 EP 2330233A1
Authority
EP
European Patent Office
Prior art keywords
substrate
nickel
aluminum layer
protective coating
metal 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.)
Withdrawn
Application number
EP09425494A
Other languages
German (de)
English (en)
Inventor
Ugo Bardi
John Nicholls
Alessandro Lavacchi
Stefano Caporali
Mark Graig
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.)
CONSORZIO INTERUNIVERSITARIO NAZIONALE PER LA SCIE
Cranfield University
Original Assignee
Consorzio Interuniversitario Nazionale per la Scienza Tecnologia dei Materiali
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 Consorzio Interuniversitario Nazionale per la Scienza Tecnologia dei Materiali filed Critical Consorzio Interuniversitario Nazionale per la Scienza Tecnologia dei Materiali
Priority to EP09425494A priority Critical patent/EP2330233A1/fr
Publication of EP2330233A1 publication Critical patent/EP2330233A1/fr
Withdrawn legal-status Critical Current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
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/66—Electroplating: Baths therefor from melts
    • C25D3/665—Electroplating: Baths therefor from melts from ionic liquids
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/48—After-treatment of electroplated surfaces
    • 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
    • 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
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/10—Metals, alloys or intermetallic compounds
    • F05D2300/12—Light metals
    • F05D2300/121—Aluminium

Definitions

  • the present invention relates to a method for making a protective coating on a metal substrate including nickel atoms.
  • This metal substrate is particularly a turbine blade for use in the aeronautic field or in gas plants for producing electric power. At the high operating temperatures of the turbines of this kind, said coating acts as a barrier against substrate oxidation, as well as a "bond coat" for any possible subsequent coating of one or more further protective layers.
  • Said protective layer is known to be obtained by means of rather complicated and expensive methods, particularly the "chemical vapor deposition” (CVD).
  • CVD chemical vapor deposition
  • the object of the present invention is to provide a method as stated in the preamble of the present description, which results in reduced energy consumption and is environment-friendly.
  • this object is achieved by means of a method comprising the steps of
  • the inventive method has the advantages of not requiring high temperatures or the use of dangerous gases and expensive plants, for being implemented.
  • the turbines coated by means of the inventive method has an improved energy performance.
  • This improvement - though poor in absolute terms - is nevertheless very significant in view of the long operating life of a gas turbine.
  • an increase as low as 1 % in the performance of a 50 MW turbine may result in about 1000 tons of gas saved per year, which corresponds to about 200.000 Euro saved per year at present prices.
  • the decrease of fuel consumption further results in the additional advantage of reducing the emission of undesired substances, such as nitrogen and carbon dioxide.
  • the metal substrate being used preferably contains at least 10% by weight of nickel and can be particularly a nickel-based super-alloy, for example one of those that are commercially known as Hastelloy, Inconel, Waspaloy, Rene (e.g. Rene 41, Rene 80, Rene 95, Rene 104), Haynes, Incoloy, MP98T, TMS and the like.
  • nickel-based super-alloy for example one of those that are commercially known as Hastelloy, Inconel, Waspaloy, Rene (e.g. Rene 41, Rene 80, Rene 95, Rene 104), Haynes, Incoloy, MP98T, TMS and the like.
  • the ionic liquid is for example a chloroaluminate of imidazole, pyridinium or ammonium.
  • the electrochemical deposition step is carried out at a temperature ranging between 20 and 50 °C using a current density ranging between 0,5 and 2,5 A/dm 2
  • the vacuum heating step is carried out at a temperature ranging between 900 and 1150 °C and at a pressure ranging between 1 * 10-5 and 133 * 10-5 Pa.
  • the aluminum layer deposited on the substrate can have a thickness ranging between 10 and 100 ⁇ m.
  • a substrate consisting of a nickel alloy made of Ni 72.0%, Cr 15.5%, Fe 8.0%, Si 0.5%, Mn 1.0%, C 0.15%, Cu 0.5%, S ⁇ 0.02% is dipped in a bath of 1-butyl,3-methyl-imidazole hepta-chloroaluminate, made of AIC1 3 and 1-butyl,3-methyl-imidazole chloride at 1:2 molar ratio.
  • an electric current is passed with a density of 1 A/dm 2 .
  • This electrochemical treatment is carried out for 2 hours at ambient temperature thereby causing the formation of a 25 ⁇ m-thick aluminum coating layer on the substrate.
  • the coated substrate is removed from the bath and kept for 2 hours at a temperature of 1120 °C and a pressure of ⁇ 133*10 -5 Pa. Thereby, a coating layer made of the A1 3 Ni and A1Ni compounds is formed by interdiffusion.
EP09425494A 2009-12-01 2009-12-01 Procédé de fabrication d'un revêtement protecteur sur un substrat métallique Withdrawn EP2330233A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09425494A EP2330233A1 (fr) 2009-12-01 2009-12-01 Procédé de fabrication d'un revêtement protecteur sur un substrat métallique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09425494A EP2330233A1 (fr) 2009-12-01 2009-12-01 Procédé de fabrication d'un revêtement protecteur sur un substrat métallique

Publications (1)

Publication Number Publication Date
EP2330233A1 true EP2330233A1 (fr) 2011-06-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP09425494A Withdrawn EP2330233A1 (fr) 2009-12-01 2009-12-01 Procédé de fabrication d'un revêtement protecteur sur un substrat métallique

Country Status (1)

Country Link
EP (1) EP2330233A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8778164B2 (en) 2010-12-16 2014-07-15 Honeywell International Inc. Methods for producing a high temperature oxidation resistant coating on superalloy substrates and the coated superalloy substrates thereby produced
WO2014130452A1 (fr) * 2013-02-19 2014-08-28 Alumiplate, Inc. Films d'aluminium durs formés par galvanoplastie à densité de courant élevée
EP2450477A3 (fr) * 2010-11-05 2015-08-12 United Technologies Corporation Procédé de revêtement pour métal réactif
EP2966190A4 (fr) * 2013-03-07 2017-01-25 Hitachi, Ltd. Procédé pour la formation de film de revêtement d'aluminure sur une base
US9771661B2 (en) 2012-02-06 2017-09-26 Honeywell International Inc. Methods for producing a high temperature oxidation resistant MCrAlX coating on superalloy substrates
US10087540B2 (en) 2015-02-17 2018-10-02 Honeywell International Inc. Surface modifiers for ionic liquid aluminum electroplating solutions, processes for electroplating aluminum therefrom, and methods for producing an aluminum coating using the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1995344A1 (fr) * 2007-05-25 2008-11-26 InnCoa GmbH Revêtement doté d'une gestion ultérieure par diffusion

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1995344A1 (fr) * 2007-05-25 2008-11-26 InnCoa GmbH Revêtement doté d'une gestion ultérieure par diffusion

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
ANDREW P. ABBOTT AND KATY J. MCKENZIE: "Application of ionic liquids to the electrodeposition of metals", PHYS. CHEM. CHEM. PHYS, no. 8, 28 July 2006 (2006-07-28), pages 4265 - 4279, XP002577503, DOI: 10.1039/b607329h *
I.USOV, P.ARENDT, L.STAN, R.DE PAULA, H.WANG, S.FOLTYN AND P.DOWDEN: "Characteristics of alumina diffusion barrier films on Hastelloy", J.MATER. RES., vol. 19, no. 4, April 2004 (2004-04-01), pages 1175 - 1180, XP002577502 *
T.TSUDA, C.L.HUSSEY AND G.R.STAFFORD: "Progress in Surface Finishing with Lewis Acidic Room-Temperature Chloroaluminate Ionic liquids", MEET.ABSTR. ELECTROCHEM. SOC., no. 602, 2037, 2006, XP002577504, ISSN: 1091-8213 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2450477A3 (fr) * 2010-11-05 2015-08-12 United Technologies Corporation Procédé de revêtement pour métal réactif
US8778164B2 (en) 2010-12-16 2014-07-15 Honeywell International Inc. Methods for producing a high temperature oxidation resistant coating on superalloy substrates and the coated superalloy substrates thereby produced
US9771661B2 (en) 2012-02-06 2017-09-26 Honeywell International Inc. Methods for producing a high temperature oxidation resistant MCrAlX coating on superalloy substrates
WO2014130452A1 (fr) * 2013-02-19 2014-08-28 Alumiplate, Inc. Films d'aluminium durs formés par galvanoplastie à densité de courant élevée
US10000859B2 (en) 2013-02-19 2018-06-19 Alumiplate, Inc. Hard aluminum films formed using high current density plating
EP2966190A4 (fr) * 2013-03-07 2017-01-25 Hitachi, Ltd. Procédé pour la formation de film de revêtement d'aluminure sur une base
US10087540B2 (en) 2015-02-17 2018-10-02 Honeywell International Inc. Surface modifiers for ionic liquid aluminum electroplating solutions, processes for electroplating aluminum therefrom, and methods for producing an aluminum coating using the same

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