EP2695964B1 - Couche de protection adaptée au composant - Google Patents

Couche de protection adaptée au composant Download PDF

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Publication number
EP2695964B1
EP2695964B1 EP12179980.3A EP12179980A EP2695964B1 EP 2695964 B1 EP2695964 B1 EP 2695964B1 EP 12179980 A EP12179980 A EP 12179980A EP 2695964 B1 EP2695964 B1 EP 2695964B1
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European Patent Office
Prior art keywords
chromium
layer
carried out
component
different
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.)
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EP12179980.3A
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German (de)
English (en)
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EP2695964A1 (fr
Inventor
Horst Pillhöfer
Erwin Bayer
Thomas Dautl
Stefan Müller
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.)
MTU Aero Engines AG
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MTU Aero Engines AG
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Priority to EP12179980.3A priority Critical patent/EP2695964B1/fr
Priority to US13/962,360 priority patent/US20140044938A1/en
Publication of EP2695964A1 publication Critical patent/EP2695964A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/02—Pretreatment of the material to be coated
    • 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
    • C23C10/30—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes using a layer of powder or paste on the surface
    • C23C10/32—Chromising
    • 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
    • C23C10/34—Embedding in a powder mixture, i.e. pack cementation
    • C23C10/36—Embedding in a powder mixture, i.e. pack cementation only one element being diffused
    • C23C10/38—Chromising
    • 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
    • C23C10/34—Embedding in a powder mixture, i.e. pack cementation
    • C23C10/36—Embedding in a powder mixture, i.e. pack cementation only one element being diffused
    • C23C10/38—Chromising
    • C23C10/40—Chromising of ferrous surfaces
    • 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
    • C23C10/34—Embedding in a powder mixture, i.e. pack cementation
    • C23C10/36—Embedding in a powder mixture, i.e. pack cementation only one element being diffused
    • C23C10/48—Aluminising
    • 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
    • C23C10/34—Embedding in a powder mixture, i.e. pack cementation
    • C23C10/36—Embedding in a powder mixture, i.e. pack cementation only one element being diffused
    • C23C10/48—Aluminising
    • C23C10/50—Aluminising of ferrous surfaces
    • 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
    • C23C10/34—Embedding in a powder mixture, i.e. pack cementation
    • C23C10/52—Embedding in a powder mixture, i.e. pack cementation more than one element being diffused in one step
    • 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
    • C23C10/34—Embedding in a powder mixture, i.e. pack cementation
    • C23C10/52—Embedding in a powder mixture, i.e. pack cementation more than one element being diffused in one step
    • C23C10/54—Diffusion of at least chromium
    • 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
    • C23C10/34—Embedding in a powder mixture, i.e. pack cementation
    • C23C10/52—Embedding in a powder mixture, i.e. pack cementation more than one element being diffused in one step
    • C23C10/54—Diffusion of at least chromium
    • C23C10/56—Diffusion of at least chromium and at least 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/60—After-treatment
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24917—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including metal layer

Definitions

  • the inch chromation can be carried out with a high chromium activity, the chemical activity being ⁇ 0.4 or 40 percent. This can be achieved, for example, by powder packing processes or gas phase chromium plating.
  • the slip can be applied using physical methods such as brushing or spraying.
  • the chromating in the first sub-step can be carried out at a temperature of 1000 ° C. to 1180 ° C., in particular 1050 ° C. to 1130 ° C. for a period of 1 to 20 hours, in particular 10 to 15 hours.
  • the base material treated in this way for example a component of a gas turbine or an aircraft engine
  • the component is packed, for example, in a powder pack with high aluminum activity (chemical activity) in the range greater than or equal to 0.15 or 15% and is thermally or thermochemically treated at temperatures of more than 1050 ° C. for a period of 2 to 14 hours.
  • Gas phase alitation can also be used. Areas without alitation can remain in particular if these areas are covered accordingly.
  • the aluminum activity can preferably be in the range from 0.15 to 0.35.
  • the alitation and / or chrome plating described here is also suitable for the internal coating of hollow blades.
  • the above method can be applied to gas turbine or aircraft engine components.
  • the component can be formed from an alloy that is metallic Main component, which has the largest proportion of the alloy, with a protective layer for protection against high temperatures and aggressive media, the protective layer comprising chromium and aluminum and in particular has been produced by a method according to one of the preceding claims, and wherein the protective layer is different Has areas that differ in their composition with regard to the chromium and / or aluminum content.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Claims (14)

  1. Procédé de fabrication d'une couche de protection pour la protection d'un composant contre des températures élevées et des milieux agressifs, dans lequel une couche de surface comprenant de l'aluminium et du chrome est formée sur la surface du composant à pourvoir de la couche de protection, et dans lequel un traitement au chrome est effectué dans une première étape partielle et un traitement à l'alite est effectué dans une seconde étape partielle, caractérisé en ce que le traitement au chrome et/ou le traitement à l'alite sont effectués simultanément dans différentes zones locales de la surface du composant à protéger, mais le sont différemment de telle façon que la couche de protection soit une couche contenant de l'aluminium et du chrome, laquelle se forme différemment dans différentes zones de la couche de protection et présente des teneurs en chrome différentes.
  2. Procédé selon la revendication 1, caractérisé en ce que, dans la première étape partielle, du chrome est déposé au moyen de procédés thermochimiques ou de procédés thermophysiques ou de procédés électrochimiques.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que, dans la première étape partielle de diffusion de chrome dans la surface de composant pour former une couche riche en chrome, un traitement thermique est effectué après l'application sur la surface de composant à protéger.
  4. Procédé selon l'une des revendications précédentes, caractérisé en ce que, dans la première étape partielle, différentes teneurs en chrome sont déposées dans les différentes zones, la teneur en chrome dans la couche formée variant entre 15 et 100 % en poids.
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce que, dans la première étape partielle, des couches enrichies en chrome de différentes épaisseurs sont déposées dans les différentes zones, les épaisseurs de couche variant entre 5 et 150 µm.
  6. Procédé selon l'une des revendications précédentes, caractérisé en ce que, dans la première étape partielle de formation d'une première couche de surface, le traitement au chrome présentant une activité chimique du chrome supérieure ou égale à 0,4 est effectué.
  7. Procédé selon la revendication 6, caractérisé en ce que le traitement au chrome est effectué à l'aide d'une barbotine riche en Cr contenant des phases liquides, laquelle barbotine est appliquée par moulage par injection.
  8. Procédé selon l'une des revendications 6 à 7, caractérisé en ce que le traitement au chrome est effectué de telle façon qu'il se forme une couche riche en chrome comportant une couche partielle de chrome α extérieure et une couche de cristal mixte intérieure constituée essentiellement de chrome et d'un composant principal qui présente la plus grande proportion de l'alliage du composant revêtu, la teneur en chrome de la couche riche en chrome étant en particulier supérieure ou égale à 40 % en poids.
  9. Procédé selon l'une des revendications précédentes, caractérisé en ce que le traitement au chrome est effectué dans la première étape partielle à une température de 1 000 à 1 200 °C, en particulier de 1 050 à 1 130 °C, pendant une durée de 1 à 20 heures, en particulier de 10 à 15 heures.
  10. Procédé selon l'une des revendications précédentes, caractérisé en ce que le traitement à l'alite est effectué dans la seconde étape partielle à une température de 1 000 à 1 150 °C, en particulier de 1 050 à 1 150 °C, de préférence de 1 080 à 1 100 °C, pendant une durée de 2 à 20 heures, en particulier de 9 à 15 heures.
  11. Procédé selon l'une des revendications précédentes, caractérisé en ce que l'activité chimique de l'aluminium lors du traitement à l'alite est supérieure ou égale à 0,15, en particulier est comprise entre de 0,15 et 0,35.
  12. Procédé selon l'une des revendications précédentes, caractérisé en ce que, après une première étape de traitement à l'alite, un second traitement à l'alite présentant une activité chimique de l'aluminium plus faible est effectué, ledit second traitement à l'alite présentant une activité chimique de l'aluminium de 0,05 à 0,3 à une température supérieure ou égale à 1 050 °C pendant une durée de 3 à 20 heures.
  13. Procédé selon l'une des revendications précédentes, caractérisé en ce que, après le traitement au chrome et le traitement à l'alite, un recuit de diffusion est effectué à une température supérieure ou égale à 1 050 °C pendant une durée de 2 à 8 heures.
  14. Procédé selon l'une des revendications précédentes, caractérisé en ce que, avant, pendant ou après le traitement au chrome et/ou le traitement à l'alite, un traitement de surface est effectué par PVD, CVD, laquage, électrodéposition et/ou par application directe d'une substance dans laquelle un ou plusieurs éléments choisis dans le groupe constitué par le platine, le palladium, le hafnium, le zirconium, l'yttrium et le silicium sont appliqués.
EP12179980.3A 2012-08-10 2012-08-10 Couche de protection adaptée au composant Active EP2695964B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP12179980.3A EP2695964B1 (fr) 2012-08-10 2012-08-10 Couche de protection adaptée au composant
US13/962,360 US20140044938A1 (en) 2012-08-10 2013-08-08 Process for producing a COMPONENT-MATCHED PROTECTIVE LAYER and component having such a protective layer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12179980.3A EP2695964B1 (fr) 2012-08-10 2012-08-10 Couche de protection adaptée au composant

Publications (2)

Publication Number Publication Date
EP2695964A1 EP2695964A1 (fr) 2014-02-12
EP2695964B1 true EP2695964B1 (fr) 2020-05-06

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EP12179980.3A Active EP2695964B1 (fr) 2012-08-10 2012-08-10 Couche de protection adaptée au composant

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US (1) US20140044938A1 (fr)
EP (1) EP2695964B1 (fr)

Families Citing this family (7)

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Publication number Priority date Publication date Assignee Title
US9909019B2 (en) 2015-06-24 2018-03-06 General Electric Company Diffusion coatings for metal-based substrate and methods of preparation thereof
US10053779B2 (en) 2016-06-22 2018-08-21 General Electric Company Coating process for applying a bifurcated coating
US10077494B2 (en) 2016-09-13 2018-09-18 General Electric Company Process for forming diffusion coating on substrate
DE102017213553A1 (de) 2017-08-04 2019-02-07 MTU Aero Engines AG Schaufel für strömungsmaschine mit verschiedenen diffusionsschutzschichten und verfahren zur herstellung
CN107607577B (zh) * 2017-09-28 2020-04-10 中国煤炭地质总局水文地质局 一种地层换热能力的热物性测试装置
DE102018213395A1 (de) * 2018-08-09 2020-02-13 MTU Aero Engines AG Verfahren zum versehen einer metallischen oberfläche mit einer chrom-diffusionsschutzschicht
FR3102775B1 (fr) * 2019-11-05 2022-04-22 Safran Piece d'aeronef en superalliage comprenant un canal de refroidissement

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US3948689A (en) * 1969-06-30 1976-04-06 Alloy Surfaces Company, Inc. Chromic-phosphoric acid coated aluminized steel
GB1545584A (en) * 1975-03-07 1979-05-10 Onera (Off Nat Aerospatiale) Processes and systems for the formation of surface diffusion alloys on perforate metal workpieces
US4526814A (en) * 1982-11-19 1985-07-02 Turbine Components Corporation Methods of forming a protective diffusion layer on nickel, cobalt, and iron base alloys
US5225246A (en) * 1990-05-14 1993-07-06 United Technologies Corporation Method for depositing a variable thickness aluminide coating on aircraft turbine blades
US5658614A (en) * 1994-10-28 1997-08-19 Howmet Research Corporation Platinum aluminide CVD coating method
US20100151125A1 (en) * 2003-08-04 2010-06-17 General Electric Company Slurry chromizing process
GB0409486D0 (en) * 2004-04-28 2004-06-02 Diffusion Alloys Ltd Coatings for turbine blades
GB2421032A (en) * 2004-12-11 2006-06-14 Siemens Ind Turbomachinery Ltd A method of protecting a component against hot corrosion
CN101460708B (zh) * 2006-06-08 2013-02-27 西门子公司 涂覆的涡轮部件以及涂覆涡轮部件的方法
GB2439313B (en) * 2006-06-24 2011-11-23 Siemens Ag Method of protecting a component against hot corrosion and a component protected by said method

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EP2695964A1 (fr) 2014-02-12
US20140044938A1 (en) 2014-02-13

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